Accessory Dwelling Units

Introduction for: “Appraising Properties w/ADUs” December 16th, 2011

Presented by: Jordan Palmeri

Green Building Program Oregon Dept of Environmental Quality

palmeri.jordan@deq.state.or.us 503.229.6766

Overview

1. ADU basics

2. Incentives

3. Resources

Photo: City of Santa Cruz

Photo: City of Santa Cruz

What’s an ADU?

An accessory dwelling unit (ADU) is a second dwelling unit

on a single family residential lot. They’re also called granny flats,

mother-in-law suites, in-law suites, etc.

1. Conversion of existing space in a home 2. Addition to a home 3. Conversion or addition to a garage 4. A new separate building on the lot

Source: Oregon DEQ 4

Environmental benefits of smaller housing

Source: Oregon DEQ 5

Small is effective

Source: City of Milwaukie and URBSWORKS 6

Households are getting smaller

Source: City of Milwaukie and URBSWORKS 7

House size has increased

Source: Oregon AARP and US Census Bureau 8

More 65+ seniors

9

Economics of ADUs

City of Portland

10

Economics of ADUs

http://pdxadu.blogspot.com/

Homeowner class on ADUs

Jan 21st, 2012

Cities allowing ADUs (incomplete data)

Portland †

Eugene †

Gresham

Hillsboro †

Beaverton

Bend †

Medford †

Springfield

Corvallis †

Albany †

Tigard

Lake Oswego

McMinnville †

Oregon City †

Redmond

Tualatin

West Linn

Newberg

Milwaukie

Ashland

Wilsonville

Sherwood

Central Point

~ 50% of population

Source: Oregon DEQ

Portland: April 15, 2010 and June 30, 2013 Wilsonville: Permanent

System Development Charge (SDC) waivers

$ 7 – 12K savings

City of Portland permits

Energy Trust of Oregon Incentive

Source: http://pdxadu.blogspot.com/

Requirements for full “new home” incentives:

• ADU must have its own USPS mailing address separate from main residence

• ADU must receive an Energy Performance Score (full incentive available through EPS)

• ADU must receive its own third party verification

• ADU must be detached from the main residence

• ADU must be intended to be used as a residence

• Detached structure must be permitted as an ADU

• Builder or owner builder must be a trade ally with New Homes program

Energy Trust Incentive Requirements

Photo: Jordan Palmeri

Space-efficient housing Workgroup

• Oregon DEQ

• Oregon Dept Land Conservation & Development

• Metro

• City of Portland

• City of Eugene

• University of Oregon

• Orange Splot, LLC

• Cascadia Region Green Building Council

• Numerous space-efficient housing advocates

Drawing: cullygrove.org

Upcoming Events

http://cascadiagbc.org/living-future/12

Space-efficient housing tour

Space-efficient housing summit Late May…..

18

accessorydwellings.org

Thank you

Jordan Palmeri Oregon DEQ

503-229-6766

palmeri.jordan@deq.state.or.us

http://www.deq.state.or.us/lq/sw/wasteprevention/greenbuilding.htm