Naperville Downtown2030 · PDF fileB with 1st Floor Oƒce Allowance Secondary Downtown ......

NapervilleDowntown2030Planning the Downtown Experience

Downtown Design Standards

Approved by the Naperville City Council on April 6, 2011 (Ord. 11-055)Prepared by the Transportation, Engineering, and Development Business Group

Introduction Page2

TABLE OF CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

STANDARDS FOR DOWNTOWN CORE AND SECONDARY DOWNTOWN . . . . . . . . . . . . . . . . . . . . . . . . . 5A.BuildingPlacement&Orientation................................................................5B.BuildingScale....................................................................................6C.Style&Character................................................................................8D.Entrances&Windows...........................................................................11E.Awnings&Canopies............................................................................13F.Lighting..........................................................................................14G.OutdoorSeatingintheDowntownCore........................................................14H.UtilityConsiderations............................................................................15I.Signs.............................................................................................18J.ParkingFacilities................................................................................20K.SpecialConsiderationforSitesUnderConstruction..............................................21

STANDARDS FOR TRANSITIONAL USE AREAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22A.ArchitecturalStyle,BuildingAesthetics&Materials....................................................22B.Landscaping&Screening...........................................................................22C.Off-StreetParkingFaciliites&ExteriorLighting.....................................................23D.Signs........................................................................................23

STANDARDS FOR BUILDINGS OF HISTORIC INTEREST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

MAPS1.NapervilleDowntown2030FutureLandUse......................................................4

ILLUSTRATIONS1.LineofSightDiagram............................................................................62.TraditionalDowntownStorefront.................................................................83.RooflineDiagram................................................................................104.ParapetDiagram.................................................................................105.Signage.........................................................................................186.HistoricBuildingRenovationintheDowntown...................................................25

All photographs, maps and illustrations areprovidedbyCityofNapervillewiththefollowingexceptions:

HitchcockDesignGroup:Images9,17,34,35,36and43

Cyburbia:Images8,13

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NapervilleDowntown2030:PlanningtheDowntownExperience-Downtown Design Standards Page3

Introduction Downtown Design StandardsisacompaniondocumenttoNaperville Downtown2030thatservesasanimportantguidefordesignofnewconstruction,additionsandmodificationstobuildingsandsitesinthedowntown.Propertyownersanddesignprofessionalsshouldrefertothisdocumentindesigningrehabilitationsandnewimprovements,asitwillbeutilizedinthereviewofsuchproposals.Thestandardsarethesinglecontrollingdesignreferenceforthedowntownareaandwillapplytoprivateandpublicimprovementsexceptasnecessarytoaccommodatepublicsafety.

EnvironmentalsustainabilityisvaluedwithinthedowntownandtheCityofNapervilleasawhole.Flexibleapplicationofthedesignstandardsmaybeprovided,ifdirectlyrelatedtotheuseofdesignelementsthatarenecessarytoachieveacceptedenvironmentallysustainablebuildingprinciplessuchasthosesetforthbytheU.S.GreenBuildingCouncilintheLEED(LeadershipinEnergyandEnvironmentalDesign)ratingsystemsandreferenceguides.AdditionalinformationaboutenvironmentalsustainabilityisprovidedinSectionDoftheBuilding Design Guidelines (2007)andSection 6 Urban EnvironmentofNaperville Downtown2030.

Experienceshows,timeandagain,thatappearanceisimportanttoahealthydowntownbusinessenvironment.Workingtogethertocreateandsustainanattractivedowntownwillbenefitthecommunityasawhole.

Introduction

Thedesignstandardsareorganizedtoaddressfourprimarylanduseareasofthedowntown--DowntownCore,SecondaryDowntown,TransitionalUse and the North Downtown Special Planning Area -- and to provideguidanceforhistoricbuildingrenovationsthroughoutthedowntown.

TheprimarylanduseareasofthedowntownaredefinedinSection 3 Land Use and Development of Naperville Downtown2030 and are summarizedhereasfollows:

Downtown Core:Servesastheactivitycenterofthedowntown,allowingfor the most intense development form and uses. This area of thedowntownincludesretail,commercialserviceandrestaurantusesontheground floor, with office, commercial service, general service, financialinstitutionsandresidentialusesonupperstories.

Secondary Downtown: Comprised of office, service and/or residentialuses,inamannerlessintensethantheDowntownCore.Thisareaallowsfor office, commercial service, general service, financial institutions andresidentialuseswhileprohibitingretailandrestaurantuses. ThisareaisphysicallydistinguishedfromtheDowntownCorebymoderatesetbackrequirementsandon-siteparking.

Transitional Use:Provideslow-intensityoffice,service,andresidentialusesthataredesignedinamannercompatiblewithadjacentneighborhoods.Thisareaisintendedforconversionofexistinghomesorconstructionofnew residentially-styled buildings for office or general service uses, aswellasconstructionofnewtownhomes. Fullon-siteparkingandmoresubstantialsetbackrequirementsarephysicalcharacteristicsofthisarea.

North Downtown Special Planning Area: Is the anticipated long-termnorthernexpansionareaof thedowntown. Theareamay includecultural/destination,retail, residentialorofficeuses. Theusesproposedwilldeterminewhichaspectsofthedesignstandardsshouldbeapplied;however, any development of this area shall respect the specificrecommendationsofNaperville Downtown2030.

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Urban Plaza

Urban Plaza

Centennial Beach

Central Park

Naper School

Washington Junior High

Municipal Center

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Naperville Metra Station

BURLINGTON NORTHERN SANTA FE RAIL LINE

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North Central College

Future Land Use North Downtown Special Planning Area

Downtown Core

A with 1st Floor O�ce by Conditional Use B with 1st Floor O�ce Allowance

Secondary Downtown

Transitional

Single-Family Residential

Multi-Family Residential

Institutional

Parks and Open Space

Outside Study Area

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Map 1: Downtown Future Land Use

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Standards for Downtown Core and Secondary Downtown

A. Building Placement & Orientation

A.1.Streetwalls

1. Constructnewbuildingsatthefrontsetbackortoalignwiththedowntownstreetwall.2. Buildcornerbuildingstotheprimarystreetwallorfrontsetbacklinefortheentirefrontageatall

corners.Thesebuildingsarecriticaltothedowntownastheyestablishapresenceatintersectionsandinvitepedestrianactivityalongthestreet.

3. AvoidphysicalgapsinthestreetwallintheDowntownCore.Wherephysicalgapsarenecessary,minimizeinterruptionsbyprovidingoutdoordiningorgatheringspaces;lowdecorativeorseatingwalls;lowdecorativefencing;orlandscapescreening.

4. Avoiddrivewaysmid-blockintheDowntownCore,asdrivewaysinterruptthepedestriancharacterestablishedbyastreetwall.

Image 1: JacksonAvenuestreetwallA streetwall is established by continuous building fronts at or near the front property line with noor minimal gaps between them. Streetwalls reinforce the pedestrian character of the downtown byestablishingaestheticandfunctionalcontinuity.Thisdevelopmentpatternshouldberetainedwhereexisting,andencouragedforinfillandnewconstructioninthedowntown.

Image 2: CornerstreetwallpresenceatMainStreetandVanBurenAvenue

DowntownCoreandSecondaryDowntownAreas Page6

B. Building Scale

B.1.Height&Bulk

Building height and bulk in the downtown is regulated by the Zoning Ordinance (Section 6) of theNapervilleMunicipalCodeandguidedbySection 3 Land UseofNaperville Downtown2030,aswellasthestandardsthatfollow.

1. Respecttheexistingscaleofthedowntownandavoidextremedifferencesinbuildingheightandbulkforrehabilitationandnewconstruction.

2. Newone-storybuildingsaretoosmalltomaintaintheurbancharacterandstreetwalleffectoftheDowntownCoreandarediscouraged.

3. Buildingsinthetraditional DowntownCorehaveaprevailingheightoftwostories.Newbuildingsthatareconstructedintheseareasshouldpresentaconsistentorcomplementaryheightasviewedfromthepedestrianlevel,withadditionalstoriessteppedbackusingaline-of-sightmethodology. Image 3: JeffersonAvenuereflectstheprevailing

two-storyheightintheDowntownCore

Illustration 1: Line-of-SightDiagramillustratinghowasteppedbackthirdstoryscreensviewfromstreet.

Line-of-sightdescribesthemethodbywhichimprovementscanbedesignedtoeliminateorminimizevisibilityfromthepedestrianlevelthroughplacementofbuildingfeatures.Forexample,athirdstoryadditionmaysituatedsuchthatitisnotvisiblefromthestreetlevelatthefrontofthebuilding.

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B.2.Articulation

1. Usevariationsintheexteriorwallplanetosubdividethefacadesofalargerbuildings,especiallythosethatextendacrossmultiplecitylots,intosmallerverticalsegmentsthatareconsistentwiththescaleandproportionoftraditionaldowntownbuildings.

2. Applytechniquestoreducetheperceivedmassoflargerbuildingssuchasvariationsinmaterialsandcolors,rooflinearticulation,andotherverticalarchitecturalfeatures.

3. Apply compatible but distinct facade designs to multiple storefronts or partitions that are partofthesamebuilding.Themesmaybeestablishedthroughuseofcomplementarycolors,cornicetreatmentsanddecorativematerials.

4. Ensurethatproportionsofopeningsorotherarchitecturalelementsareconsistentwithexistingbuildings in the downtown, particularly those along the same block, to maintain aestheticcohesiveness.

5. Use architectural details to help maintain the traditional character, scale and proportion ofdowntown.These details include the size of windows; the location of doorways; and the designandplacementofcolumns,pilasters,moldingsandotherdecorativefeatures.

6. Avoidblankwallsonallsidesofastructurethatareopentopublicview.Windowsarenotrequiredforbuildingfacesabuttinginteriorsidepropertylines,butbuildingarticulationshouldbeprovided.

Image 4: Variationsintheexteriorwallplanesubdividethefacadeonthissinglebuildingintomultipleverticalstorefrontsegments

Image 5:Facadetreatmentsonsidewallprovidearticulation


C. Style & Character

C.1.BuildingCharacter

1. Designnewbuildingstoofferhigh-qualityandcompatibleinterpretationsofthetraditionalbuildingstylesexistingwithinthedowntownarea,particularlythosealongthesameblock.

2. Incorporatecharacteristicsofcommercialstorefronts(e.g.,displaywindows,recessedentrancesandawnings)inthearchitecturaldesignofnewbuildingsintheDowntownCore.

Image 7:MainStreetPromenadepresentsacontemporaryinterpretationoftraditionaldowntowncommercialbuildings

Illustration 2:TraditionalDowntownStorefront

Image 6: Thisbuildingusestraditionalproportionsandfeaturestocomplementthedowntowncharacter

UPPER FACADE

STOREFRONT

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C.2.Color

1. Selectexteriorcolorsthatcomplementthehuesofnearbybuildings.Typicalbuildingcolorsinthedowntownareaincludethenaturalbrickandstoneshadesofred,buff,white,creamandgray.

2. Choose building and accent colors that are appropriate to the period or architectural style of abuilding.

3. Usedarkerorbrighterhuesonly foraccent or to drawattention todetails suchas architecturalornamentationordoorways.

4. Donotapplypainttomasonrysurfaceswherenonepreviouslyexisted.

C.3.Materials

1. Brickandstonearepreferredprimaryandaccentbuildingmaterialsforallbuildingtypes,includingmultiple-family.

2. Applywoodclapboardsidingorsimilarlystyledfibercementsidingasappropriatetothebuildingarchitecture.Avoidtheuseofroughsawedwood,aluminumsiding,rusticshinglesorplasticpanels.

3. DonotuseStucco,EIFSorDry-vitasaprimary material.Thesematerialsmaybeacceptableasanaccentapplicationabovethestorefrontlevel,basedonthedesignintentofthebuilding.

4. Donotuseglass,metalpanels,andconcreteasprimarybuildingmaterialsonthestreetfacadeinthedowntownarea.

5. Useconsistentbuildingmaterialsanddetailingonallsidesofastructurethatareopentopublicview.

Primary Material: the dominant exterior building material, typically comprising 75% to 90% of eachexteriorbuildingfaceexcludingwindowsanddoors.Accent Material: utilized to provide architectural interest and variety on a building. Accent materialswill typically comprise 10% to 25% of each building face excluding windows and doors, depending onarchitecturalstyleandcontext.

Image 8: DISCOURAGEDuseofcolor(bright,conflictinghues)inadowntownsetting

Image 9:Acomplementarymixofmasonryandwoodmaterials


C.4.Rooflines&Parapets

1. Designnewbuildingstocomplementtheestablishedrooflinesandcornicetreatmentsofnearbybuildingsalongtheblock.

2. Avoidgable,shakeorshingleroofs,exceptasappropriatetothearchitectureorperiodofabuilding.

3. Screen all rooftop mechanical equipment (including supporting pipes,exhaustandventstacks)toitsfullheightbyaparapetwallonallsidesofthebuilding.Individualscreeningsystemsshallnotbeconsideredfornewconstruction.

4. Consider alternate screening methods for existing buildings whereinstallationofaparapetisinfeasible.Screeningmustminimizeorconcealtheappearanceofrooftopmechanicalequipment.

Illustration 3: Newbuildingsshouldbecomplementarytotheestablishedrooflinesofneighboringbuildingsontheblock

Illustration 4:Parapetsmustscreenrooftopunitstotheirfullheight

Image 10: Parapetsareusedtoscreenrooftopunitssothattheyarenotvisiblefromthegroundlevel

PARAPET

MECHANICAL EQUIPMENT

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D. Entrances & Windows

D.1.CommercialStorefrontsintheDowntownCore

1. Incorporatestorefrontfeatures,suchaslargedisplaywindowsanddoors,lowbulkheads,transoms,relativelythinframingelements,andacorniceelementinnewbuildingstoseparatethestorefrontfromupperstories.Thesefeaturesprovidecompatibilitywiththecharacterofthedowntownandenliventhepedestrianshoppingstreet.

2. Considerrecessedentrancesforcommercialstorefronts.3. Keepwindowsrelativelyclearofobstructions.

D.2.Entrances

1. Orientprimarybuildingentrancestoapublicstreet.2. Providedoorsandentrancesthatarehighlyvisible,astheseareinvitingtocustomers.3. Ensurethatthefrontdoorsofnewbuildingsreflectthedoorwayplacementandproportionsof

existingbuildingsalongthesameblock.Provideangledcornerentrancesforbuildingslocatedattheintersectionofroadways.4. Applydetailedtreatmentofwindowsanddoorsonprimaryentrancesthroughsuchfeaturesaslintels,sills,molding,anddecorativedoorstyles.5. Incorporateentrancemodificationsforbuildingrenovationprojectsthatprovideimprovedaccessibility,wherefeasible.PleaserefertoSection

6 Urban EnvironmentofNaperville Downtown2030 foradditionalrecommendations.

Image 11: Contemporarydowntownstructurewithtraditionalstorefrontelements

Image 12:CornerentranceonhistoricstorefrontatnorthwestcornerofMainStreetandJeffersonAvenue

Image 14: DetailedcornerentrytreatmentsatMainStreetPromenade

Image 13: Thiscustomerstorefrontisinvitingandaccessibletocustomers


D.3.RearCustomerEntrancesintheDowntownCore

1. Providerearcustomerentrancestorestaurants,storesandshopsonblockswherepublicparkingorpedestrianwalkwaysarelocatedbehindthebuildings.

2. Design rear customer entrances to be attractive and inviting, incorporating design treatments that arecomparabletofrontentrances.PleaserefertoSection 6 Urban Environment,ofNaperville Downtown2030foradditionalrecommendations.

D.4.Windows

1. Designthesizeandplacementofwindowsonnewbuildingstoreflectthewindowtypes,sizes,proportionsandpatternsofnearbybuildingsalongtheblockface.

2. Provide ground floor display windows on commercial building faces that abut pedestrian areas in theDowntownCore.

3. Avoidfloor-to-ceilingwindowsintheDowntownCore.Provideawoodormasonrybulkheadbeneathallfirstfloorwindows.

4. ProvideclearglasswindowsatthepedestrianlevelintheDowntownCore.Windowglazingmaybelocatedonupperstoriesonlyandshouldbeclearorslightlytinted.Avoidreflectiveordarkcoatings.

Image 15: RearcustomerentranceatnortheastcornerofMainStreetandJeffersonAvenue

Image 16: ConsistentdisplaywindowplacementalongWashingtonStreetinthedowntown

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E. Awnings & Canopies

1. ProvideawningsandcanopiesintheDowntownCoretoaddvisualinteresttothestreet,provideprotectionfromtheelementsanddefinethecharacterofthedowntownarea.

2. Positionawningsandcanopiesatleasteightfeetabovethesidewalk.3. Designawningstofitwithintheframeofthestorefront.Awningsshouldnothideabuilding’sfaçade,distortitsproportions,orcoverarchitectural

features.4. Selectmattecanvasawningmaterialsthataremadeofdurablefabricmaterialthatcanbeeasilycleanedandresistsfading.Donotusevinylor

metalawnings.5. Installawningframessoastominimizedamagetotheunderlyingstorefront.6. Selectawningsthatarecomplementarytothestyleandcolorofadjacentstorefronts,particularlyonasinglebuildingwithmultiplestorefronts.

Solidcolorsorsubtlestripedpatternsarepreferredforallawnings.7. Avoidshingle,mansardorarch-shapedcanopies.8. Avoidawningsthataremountedintoasidewalk.9. DonotuseglassormetalcanopiesintheDowntownCore.InSecondaryDowntownareas,canopiesshouldbecomplementarytothebuilding

architectureandappropriatetothecontextofbuildingsinthenearbyvicinity.

Image 17:DISCOURAGEDapplicationofarch-shapedcanopies.Canopiesandawningsshouldnotextendacrossmultiplestorefrontsorbuildings.

Image 19: Mattecanvasawningsshouldbeappliedwithinstorefrontframesandbecomplementaryalongtheblockface

Image 18: Encouragedapplicationofawningsforasingletenantthatextendsacrossmultiplebuildings.


F. Lighting

1. Provideilluminationonfrontandrearentriestoensurecustomerandemployeesafety.2. Selectdecorativelightfixturesthatarecompatiblewiththebuildingdesign.3. Chooselightbulbsthatemitawarmtoneforexteriorbuildingidentificationandaccentlighting.4. Provideshieldsonrearsecurityorentrancelightingtominimizeimpacttoneighboringuses.5. Consideruseofexteriorspotlightingtoilluminateprominentbuildingsand/orbuildingdetails,6. Alleywaysorpaseosthatareusedforpedestrianmovementinthedowntownshouldbeadequately

litforsafetyandcomfort. RefertoSection 6 Urban Environmentof Naperville Downtown2030 foradditionalrecommendations.

G. Outdoor Seating in the Downtown Core

1. ProvideopportunitiesforoutdoorseatingwithnewdevelopmentintheDowntownCore.Outdoorseatingmaybeprovidedthroughbenches,lowwalls,anddiningareaswhereappropriate.

2. Incorporatelandscaping,decorativefencingorotherphysicalelementstoseparateoutdoordiningareasintheDowntownCorefrompedestrianways.

Image 20:Exteriorspotlightingforpedestrianandserviceentrancesonarearfacade

Image 21: Outdoordiningadjoiningapedestrianwayindowntown

Image 22: Outdoordiningindowntown

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H. Utility Considerations

H.1MaintenanceandServiceAreas

1. Maintaintherearportionsofallpropertiesingoodcondition,clearoftrashanddebris.Rearserviceareasshouldnotbedisruptiveforbuildingswithdualcustomerentrances.

2. Screenandlocatetrashreceptacles,dumpsters,serviceareasandoutdoorstoragefacilitiesinsuchamannerthattheyarenotvisiblefromnearbystreets,sidewalksandcustomerparkingareas.

3. Provideappropriatestorageorpromptlyremoveodorousorliquidwaste,particularlyfoodwaste.4. Repair,repaint,andupgradetherearofexistingcommercialbuildingsasrequired.5. Designattractiverearfacadesfornewbuildingswithinthedowntowncore,includingintegration

ofmaintenance,utilityandserviceareasinthebuildingdesign.

H.2.UtilityEquipmentScreening

1. Mountutilityequipmenttoanexteriorwall,unlessanalternatelocationisauthorizedbytheutilityprovider.

2. Insetexteriorgas, telephone,andutilitymeteringequipment intothebuildingexteriorand/orplaceitonasecondaryfaçadethatdoesnotabutpedestrianwalkways.Screenequipmentthroughtheuseofbuildingdesignfeaturessuchaswingwallsorapprovedlandscaping,minimizingtheneedforopaquefencing.Iffencingisapproved,itmustbecomplementarytothebuildingdesign.

3. Electricalmeteringequipmentmaybeplacedinanexteriorclosetlocatedatgroundlevelsubjectto approval by the Department of Public Utilities-Electric (DPU-E), provided that the closet issufficientlydeeptohousemeteringequipmentandpreventstorageofanymaterials (typicallynot greater than 18”), and that it is accessible to the public utility at all times. Considerationshouldbegiventoadditionalmetersrequiredforfuturetenantdivisions.

4. Donotallowutilitymeteringequipmenttooverhangintothepublicright-of-way.5. Avoidphysicalobstructionstoutilityequipmentareas(e.g.,parking).

Image 23: Refusestorageareasmaybeinsetintoabuildingfacadeandscreenedwithopaquefencing.

Image 24:Electricmetersmaybeplacedwithinanexteriorcloset(typicallynotgreaterthan18”).


DOWNTOWN2030 DESIGN STANDARDS SPOTLIGHT: Spotlight On Electric Meter Screening

Electricmetersarenecessarytoensureproperdistributionandbillingofelectricalservicetoabuilding.Abuildingmayhaveasingleelectricmeterormultiplemeterstoserveeachbuilding tenant. Unrestricted access to electric meters is necessary for the Departmentof Public Utilities - Electric (DPU-E) for the purposes of meter reading and maintenance.Obstructionsthatimpedeaccesstoelectricmeterscanresultinextendedpoweroutagesforbuildingtenants.Electricmetersmustalsoaccommodateadequateworkspacesforthesafetyofutilitypersonnel,whomaybeworkinginrestrictedspaces.

DPU-Erequires thatelectricmetersbemountedtoanexteriorbuilding face.However, itis also important to consider the location and screening of metering equipment as thisequipment can be unsightly on a public building face and inviting to vandals when tooreadily accessible. Developers and architects should work with the Transportation,Engineering and Development Business Group (TED) and DPU-E in the building designphase to consider the location and screening of electric metering equipment to meetsafety,serviceandaestheticobjectives.

Thediagramabovedepictsanacceptablemeterscreeningsystem.Electricmetersareplacedinanexteriorclosetlocatedatthegroundlevel.AccesstotheutilitypersonnelisprovidedthroughalockingmechanismapprovedbytheDepartmentofPublicUtilities-Electric.Thediagramalsodepictsaconceptualinterior arrangement that provides efficient connectivity between the electric meters and interior electrical equipment. DPU-E access in this exampleisrequiredonlyfortheelectricmetercloset. Locationandscreeningofelectricmeters inthedowntownisaddressedonasitespecificbasis,requiringapprovalbyTEDandDPU-E.

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H.3.ElectricUtilityTransformerLocations

1. Locatethetransformerinanareathatisanaccessibleandsafeworklocation.Propertransformerplacementisimportanttoensurethesafetyofcityemployees,thegeneralpublic,andprivateandpublicproperty.

2. Whenpossible,avoidlocatingnewtransformersonprimarypedestrianstreets.3. Donotplacetransformerssoastoposeanobstructiontopedestrianorvehicleroutes.4. Selectdiscreetlocationsfortransformersorscreenasappropriate.5. Wheretransformersareplaced inhighvisibilityareas,consideraesthetic treatments toenhance

visualcompatibilitywiththebuildingandsite.6. Incorporatebuildingdesignfeaturessuchaswingwallsorlandscapingintotransformerscreening,

minimizingtheneedforopaquefencing.Iffencingisapprovedbythecity,itmustconsistofeasilyremovablepanelsandbecomplementarytothebuildingdesign.

DOWNTOWN2030 DESIGN STANDARDS SPOTLIGHT: Electric Utility Transformer Locations

Transformersprovideelectricservicetoexistingandfuturedowntownbusinesses.Sitingutilitytransformersinthedowntownischallenging,aslotsarecompactandbuildingstypicallyextendfrompropertylinetopropertyline.Isimportanttobalanceservice,safety,costeffectiveness,andtheaestheticofthedowntownpedestrianenvironment.Transformerslocatedinsideenclosures,whilethemostattractiveapproach,willresultinlongerpoweroutagesandmorechallengingsafetyissues.Thesetransformerstakemoretimetoaccessandservice,andmaygetblockedbycustomerstorageandsnow.

Transformersshouldbediscretelylocatedorscreenedwhileprovidingsafeaccessibilityforoperation,maintenance,removal,andinstallation.Transformerareas should not be used for exterior storage purposes. Location and screening of transformers in the downtown is addressed on a site specific basis,requiringapprovalbyTEDandDPU-E.

Image 25: Thepreferredlocationforatransformerisonarearfacadewhereadequateserviceaccessisprovided.


I. Signs

I.1.GraphicConsiderations

1. Avoidexcessiveanduncoordinateduseofsigncolors.Colorsshouldbelimitedtonotmorethanthreeonasinglewallorprojectingsign.

2. SignsonadjacentstorefrontsintheDowntownCoreshouldbedistinctyetcomplementaryinsize,styleandcolor,particularlyforsignsonasinglebuildingwithmultiplestorefronts.

3. Avoidcrowdedlettering,poorcontrastortypefacesthataredifficulttoread.4. Simpleandhighlylegibleletteringorlogosarepreferredonawnings.

I.2.SignType&Material

1. Thesize,material,colorandshapeofsignsshouldcomplementthearchitecturalstyleandscaleofthebuilding.2. Woodsigns,ifused,shouldbeofhighqualitywithhand-carvedorengravedletteringandasmooth,painted

orsealedfinish.3. Letter-typesignswithindividuallettersthatareaffixedtothebuildingexteriorarepreferred.4. ConsidertheuseofdecorativeprojectingorbladesignsintheDowntownCore.Projectingorbladesignsshould

becoordinatedwithabuilding’sfaçadedesign.

Image 26: Coordinatedapplicationofsigntypesandcolors

Image 27: Signageisofhighqualityandcomplementarytothebuildingdesign.

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I.3.Placement

1. Designwall-mountedsignsasanintegratedcomponentofthebuildingfaçade.2. Donotallowwallsignstocoverimportantarchitecturaldetails.3. Installsignssoastoavoidorminimizedamagetoabuildingfaçade.

I.4.Illumination

1. Directilluminationofwall-mountedsignagebyexteriormountedlightfixturesispreferredinthedowntown,assuchlightingallowssignstoappearasanintegralpartofthebuilding’sfaçade.

2. Ifwall-mountedsignageusesindividuallyilluminatedletters,“halo”orbacklitilluminationispreferred.Channel,orinternally-lit,lettersarealsoacceptable.

3. DonotinstallIlluminatedsignage(e.g.,boxsignage,barebulbs)alongtheRiverwalk.

Illustration 5: Signsshouldbecomplementaryinsize,styleandplacement.

Image 29: Highqualityengravedwoodsign Image 30: Bladesignsareencouragedinthedowntown

Image 28: Individuallettersareappliedtoapaneltominimizedamagetounderlyingmasonry.Colorsarecomplementarytothebuilding.


J. Parking Facilities

1. Locatesurfaceparkinglotsbehindbuildingswherepossibleandavoidplacingnewparkinglotsatcorners.

2. Locateentrancestoprivateparkingfacilitiesonsecondarystreets(i.e.,streetswithlesspedestrianactivity)oralongtherearofthepropertyinordertoavoidpedestrianconflictsandbreaksinthestreetwall.

3. Installlandscaping,lowseatingwallsordecorativefencingalongtheedgesofsurfaceparkinglotsthatborderpublicwalkways.

4. Provideclearandsafepathwaysforpedestriancirculationatparkingdeckentrances.5. Designparkingdeckstocomplementtheexistingdowntownintermsofscale,materials,bulk,etc.6. Incorporatestores,serviceestablishmentsandotherpedestrian-orientedusesonthegroundfloor

ofallparkingdecksinthedowntown.7. Definevehicularandpedestrianentrancestoparkingfacilitiesthroughsignageandlandscaping.8. Design parking decks such that rooflines and floor level articulations are parallel to the street.

Rampingandinclinesshouldoccurwithinthestructureorontheinterioroftheblock.

Image 31:Useoflowwallsandlandscapescreeningtoseparatesurfaceparkingfrompublicwalkways(RiverwalkLot,MainStreetandJacksonAvenue)

Image 32:PedestrianwaysandvehiclecirculationareclearlydelineatedinthevicinityoftheVanBurenDeck.

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K. Special Consideration for Sites Under Construction

1. Maintainsafeandcomfortablepedestrianwaysonallsidesoftheprojectsiteabuttingapublicright-of-way.

2. Considerprojectphasingtominimizevisualdisruptionsandavoid“pedestrian dead zones”inthedowntownarea.

3. Paint or finished facades that will one day adjoin another building (i.e., aninteriorsidefaçade intheDowntownCore)toprovidecompatibilitywiththeremainderofthedowntownandthedowntownarea.Unfinishedbareconcretewallsthatareexposedshallbeavoided.

4. Whereasiteisexpectedtoremainunfinishedforanextendedperiodoftime,considertemporaryusesthatwillenlivenandbeautifythearea.5. Establish turf grass on sites pending development within 30 days of the structure being razed, unless a building permit has been obtained

orconstructionhascommenced, inordertosoftentheappearanceofvacantland,minimizedust,andreducedistractionstothedowntownambience.

6. Removestandingwater,debris,litter,brokenconcrete,brokenasphaltandotherdebrisfromsitespendingdevelopmentorunderconstruction.7. Ensurethatconstructionsitesareproperlysecuredandsupervisedforsafetypurposes.

Pedestrian Dead Zones: typically lack the appropriate landuses as well as safe and interesting pedestrian walking routesthatconnectthemtotherestofthedowntownandmakethemattractivedestinationsforpedestrians.

TransitionalUseAreas Page22

Standards for Transitional Use Areas

A. Architectural Style, Building Aesthetics & Materials

BuildingheightandbulkinthetransitionaluseareaisregulatedbytheZoningOrdinance(Section6)oftheNapervilleMunicipalCodeandguidedbySection 3 Land UseofNaperville Downtown2030,aswellasthestandardsthatfollow.

1. Allnewbuildingsshallberesidentiallystyledtoblendwiththecharacterofthesurroundingneighborhoods.

2. Residential roof forms(e.g.,gable,hip)arepreferred.Fauxvariationsmaybeappropriatetoaccommodaterooftopmechanicalunitshiddeninrecessedportionsoftheroof.

3. Brick, stone and horizontal siding (wood or fibercement)arethepreferredmaterialsfornewbuildingsorbuildingrehabilitationinthetransitionaluseareas.

4. Architectural asphalt or wood shingles are thepreferredroofingmaterials.

5. Buildingcolorsshouldfollowatraditionalorearthtonepalette.

6. Designaccessorystructures(e.g.,detachedgarages,sheds)tomatchtheprincipalstructureinmaterialandstyle.7. Considersidevents,groundmountedmechanicalunitsorinteriorinstallationasalternativestorooftopmechanicalinstallationasappropriate.All

mechanicalunitsshallbescreenedfromviewincludingrooftopmechanicalunits,whichshallnotbevisiblefromanyfaçade.

B. Landscaping & Screening

1. Selectfencesthatarecompatiblewitharesidentialneighborhood.Lowdecorativemetalorwoodpicketfencingisacceptablealongthefrontandcornerside;board-on-boardwoodispreferredforscreeningpurposes.

2. Design landscaping to complement a residential neighborhood, providing four-season interestthroughinclusionofevergreen,deciduousandperennialspecies.

Image 33:Residentially-styledcontemporarybuildinginthetransitionalusearea

Image 34:Historicresidentialstructuresmayadaptedforofficesinthetransitionalusearea

Image 35:Seasonallandscapingandlowpicketfencesareappropriateintransitionalareas.

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C. Off-Street Parking Facilities & Exterior Lighting

1. Provide cross-access between off-street parking facilities through reservation of cross-accesseasements,agreementsorshareddriveways.

2. Buffer off-street parking facilities with fencing and landscaping.Where transitional use propertiesabutresidentiallots,usefencesandheavylandscapingtopreventlightandsoundtrespassfromday-to-dayoperationsandautomobiles.

3. Donotusepolelightsforanyoff-streetparkingfacilityinthetransitionaluseareas.Ifexteriorlightingisrequiredforoff-streetparkingareas,buildinglightingand/orpedestrianbollardsmaybeprovided.

4. Install shields on exterior lighting sources to minimize glare. Accent lighting may be excluded,providedthatlightwillnotdirectglareontoadjacentproperties.

D. Signs

1. Selectsignagethatiscomplementarytothebuildingarchitectureindesignandmaterials.2. Highqualitywoodsignmaterialsarepreferred.Illuminationshouldbeavoided,unlessprovidedby

directexternalsources.3. Projectingsignsareacceptableinthetransitionalusearea.

Image 36:Landscapehedgescreeningforsurfaceparkinglot.

Image 37.Acceptablesignstyleandmaterialsinthetransitionalusearea.

BuildingsofHistoricInterest Page24

Buildings of Historic Interest*

Theobjectiveofthesestandardsisnottopreventorcontrolchange,butrathertoencouragesensitiveandappropriatealterationsthatenhancethedowntownappearanceandexperience.

1. Retain,restoreorreconstructthedistinguishingfeaturesofdowntown’solderbuildings,particularlydecorativecornices,columns,reliefsandothersignificantfaçadedetailing.

2. Designbuildingimprovementsandadditionstoreinforceandenhancetheoriginalarchitecturalcharacteristicsofabuildingratherthanapplynewordifferentstylistictreatments.

3. Wheneverpossible,maintainandrestoreoriginalbuildingmaterials.4. Where original features have been covered up, buildings should be closely examined and old

photographsreviewed(iftheyareavailable)priortoundertakingsignificantimprovements.5. Inmostcases,retain,restoreorreconstructtheoriginalrooflineandcornicetreatmentofexisting

buildings.6. Donotpaintceramictile,terra-cotta,brick,stoneandglasssurfaces,unlesspaintalreadyexistson

thesesurfaces.7. Maintain window size and configuration on buildings where existing windows are important

architecturalfeaturesinabuilding’sfaçadeandparticularlyonupperstories,.8. Retainorreplacehistoricwoodenbulkheadsoncommercialstorefrontsinkind.9. Ensurethatnewmaterials, includingthecolor,sizeandfinishofbrickandstone,arecompatible

witholderexistingmaterials;newmortarsshouldalsobecompatibleincomposition,color,textureandprofile.

10. Selectnewdoorsthatarecompatiblewiththearchitecturalstyleandcharacterofthefacade.Woodorpaintedmetalwithlargeglasspanelsaretraditionaldoorstyles.

11. Avoid the use of Dry-vit and similar exterior surface materials; in particular, do not use thesematerialstoconcealorcoverupimportantexistingfeaturesofabuilding’sfaçade.

12. Use color to unite the elements of a facade and to highlight important features like historicdetailing,interestingdesignmotifsandspecialcornicetreatment.

*Property owners seeking a tax freeze or other state/private incentive funding should consult the Secretary of Interior Standards

for Rehabilitation.

Image 38: Historicdecorativecornice

Image 39: Rooflinedetailsenhancebuildingcharacterandgivecluestothecommunity’spast

Image 40: Historicwoodenbulkhead

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Before: Amodernmetalfacadewasappliedoverthehistoricbuildingstorefront.

After: Arestaurantrenovationresultedinrestorationoftheoriginalfacade.Originalexteriorbuildingdivisionsanddecorativefeatureswereretained.

Image 43: DISCOURAGEDmodificationofahistoricbuilding(materials,windows,alterationofarchitecturalstyle).

Image 41: Decorativewindowhoodsandcornicebrackets.

Image 42: Ornamentalmasonryfacadedetailing.

Illustration 6: Historicbuildingrenovationinthedowntown

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