Over the past year the Seattle City Mayor and City Council have been working on changes to portions of Seattle's zoning codes that deal with back yard cottages and mother in law units in single family neighborhoods. The changes are hoped to encourage greater density and a wider variety of housing options, including more units for lower income families.

In response to the proposed changes the Queen Anne Community Council (QACC) filed an appeal in an attempt to block the legislation. The appeal is set to be heard on this coming Wed. 8/31/2016 at 9:00am.  

It is hard to guess how the appeal will go and how the timeline for the changes will play out but here are our thoughts...

• The Appeal succeeds -
  • If the QACC's appeal is successful it will most likely have a significant drag on the timeline for the changes. We believe that some change will still likely occur however, it appears that the mayor and city council has the will to push the proposed changes regardless of the outcome of Wednesday's hearing.
• The Appeal Fails -
  • If QACC's appeal fails it will help clear the path and speed up the proposed changes. That said there seems a good chance that the QACC (or someone else) may try another tactic to stall or block the changes if this one fails. Because of this is hard to know how long any changes will be delayed.

Of the proposed changes on the table, if we were placing bets, here's what we expect to pass council vote whenever that may be -

• Highly Likely - 
  • Increased max gross floor area for cottages
  • Increased max height limit for cottages
  • More flexibility for entry locations
  • Reduction of parking requirements
  • Easing of lot size requirements
  • Easing of rear yard coverage requirements
• Possible -
  • Total elimination of parking requirements
  • Garage area does not count toward total max gross floor area
  • A sunset clause for Owner Occupancy (we expect 3or more years on this one)
• Unlikely -
  • ADU + DADU on same lot
  • Complete removal of Owner Occupancy Agreement

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Wow, strong support for all of the changes to the DADU / backyard cottage code!

Last night, CM Mike O'Brien and Nick Walsh from the city planning office had an open house to take the temperature of the community with regards to a series of incremental revisions to the DADU code.  Some of the proposed changes on the table, plus results from the straw poll as of the beginning of the meeting: 

25 for/ 9 against eliminating the owner occupancy requirement

23 for /6 against allowing a DADU and an ADU on the same lot (and possibly change the number of unrelated persons allowed to live on an Single Family lot.  

14 for / 5 against /13 maybes for Increasing the Rear Yard Coverage allowed

28 for/4 against eliminating the parking requirement

I didn't get the tallies for the height limit increase and other development standard improvments but they were also supported by a plurality.  

The reception was generally positive and civil, and more importantly according to the straw vote for the various measured, there was overwhelming support for all of the provisions.  

Next open house is 6 pm, February 3rd at the Wallingford Community Center. 

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In a city where the land use policy discussions are centered around density, the lack of new housing units, affordability even rent control and sustainability, why aren't Backyard Cottages more popular and more prevalent?  

On Thursday, I'll be on a panel discussing the state of Seattle's Backyard Cottages with City Council from 12-1 pm.   The premise of the 'Lunch and Learn' is one, to assess the status of current planning efforts and two, look at some alternative strategies from Portland.  

--Matt

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A triumph for the 'Seattle Way'--years of contentious hearings, studies, tweaks resolve into ultimately a unanimous decision.  There is a certain super-tanker inertia about the city process that eventually prevails but it does it take a quite a while to steer the ship of state toward higher goals. Big thanks to Councilmember Sally Clark, the DPD staff, and CORA supermen:  Brandon Nicholson, Bradley Khouri, and David Neiman.

The new Multifamily Code is scheduled to come up for a vote before Council on Monday.  After years of process, hearings, and work shaping the outcomes, the new code will have some new attributes geared toward more flexibility in heights, parking, setbacks, and density.  It disincentivizes the '6 pack' townhomes everyone dislikes and gives out bonuses for green building, designs that hid parking and give a better streetscape.

For those of us who participated in the sausage-making legislative process over the years, it is great to see that it will finally come up for a vote.  If you want to see the vote, and who wouldn't, it will be at City Hall at 2pm Monday.

The Seattle channel recently interviewed myself and CAST clients Kate Lichtanstein and Ric Cochrane regarding the backyard cottage we are currently working on together. They included our project in a broader story that profiles an owner of a recently completed backyard cottage and gives a basic outline of the new Seattle backyard cottage ordinance.

Seattle Channel Video can be played in Flash Player 9 and up

UPDATED AUG. 8th 2019

Now that the new legislation is in place we’ve updated Quickstart Guide for 2019. Please keep in mind that this information is intended as a high level primer for the code that governs backyard cottages in Seattle… It should only be used as a basic starting point for planning. If you would like to move forward with the design and permitting of a backyard cottage for your home we recommend careful scrutiny of the entire ordinance and the assistance of an architect or design professional.

Download guide as a printable pdf

We've seen an unexpected level of interest in backyard cottages in the 2 months since the new ordinance has been in effect. Perhaps the most interesting thing about the projects is the diversity of needs for each one... We have a young couple with a small house on a large lot that would like an outbuilding with a workshop and guestroom. We have a couple planning to build and occupy a cottage in their backyard in order to open up their home for their children and grandchildren to live in. We have a third couple who have separated but are committed to raising their children together. They currently live in the same house and believe that adding a backyard cottage to the property will maintain the proximity they need to raise their children together while providing them the space they need as individuals.

In a bit of a surprise, we have yet to see anyone looking to build a cottage for the sole purpose of rental income. Although one of the guys here at the office has been running the numbers and is strongly considering building a cottage for rent in his backyard.

We've completed the first round of design on our CAST architecture case study backyard cottage.

Kate and Ric's cottage is intended to serve as an art studio, workshop and guest house. It is also designed so that it may function as a rental home if needed. Our initial round of planning looked at how the spaces might work as a rental thinking that those functional requirements would be more restrictive than the requirements for an art studio and workshop.

Elements common to all three schematic design options:

All three options place the cottage at the SW corner of the site, chosen for it's relationship to the more public areas of the existing home and for an opportunity to create a shared outdoor room for both the cottage and the home. They all have a gable roof which was chosen for the height bonus allowed in the ordnance and to help marry the form of the cottage to the form of the existing home. All three options have the kitchen, living and bath rooms on the first floor and a bedroom loft on the second floor. Another feature common to all the options is the use of salvaged galvanized steel scaffolding components (see image below) which we plan to use as treads for ladder to the loft spaces.

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SCHEMATIC DESIGN OPTION 1

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This design incorporates an existing garage which more or less sits on the South and West property lines. The city land use desk (walk in) indicated that it was probable that we would be able to grandfather the building envelope of the existing garage into a new backyard cottage but they were unwilling to guarantee it. They recommended that we go through formal land use approval early in the process. Regardless of their final call we did know that we would have to stick within the building envelope of the garage for all portions of the backyard cottage that did not conform to the new ordinance. The potential advantage of using the existing garage is that it would allow us to use up less of the yard space for our new structure.

This drawing illustrates the site plan and floor plans. The existing garage is the portion of the structure that bumps out to the south and the west.

This is a view of the cottage from the SE. You can see the envelope of the existing garage on the south side of the structure.

A view from the NE looking through the shared outdoor room.

A view looking from the dining room, past the scaffolding ladder and into the living area.

A view from the living room into a private shade garden inspired by small Japanese courtyard gardens and created in the 5' setback from the lot line. a four foot concrete wall and cedar fence above create a very private and intimate indoor/outdoor space.

A view from the street.

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SCHEMATIC DESIGN OPTION 2

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The major element in this design is the creation of a covered outdoor workspace to the south of the cottage.

The covered patio to the south provides a sheltered outdoor workspace. The loft space is pulled back from the east wall allowing two stories of light to fill the first floor studio.

View from the SE

View from the NE

Loft space

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SCHEMATIC DESIGN OPTION 3

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This scheme ended up being the winner with Kate and Ric. They felt it was the best fit for their needs in terms of layout and size. It features a simple open plan on the first floor and a second floor that is more private than the lofts in the first two options.

Pass through doors and a simple plan define this scheme.

View from the SE.

View from the NE.

Entry from shared outdoor room

Looking toward the kitchen and dining room.

Bath with a private shade garden.

Loft.

The Department of Planning and Development (DPD) has posted a new client assistance memo (CAM) to outline the citywide backyard cottage ordinance. CAMs are guides intended to help people navigate the building permit processes in the city of Seattle.

CAM 116B, Establishing a Backyard Cottage (Detached Accessory Dwelling Unit) "This Client Assistance Memo (CAM) explains the requirements and process for establishing a detached accessory dwelling unit (also called a DADU or mother-in-law unit) on an owner-occupied Single Family zoned lot in southeast Seattle."

If you are considering building a cottage in your backyard it is still worth reviewing the DPD's older, more comprehensive (but now somewhat inaccurate) publication: "A Guide to Building a Backyard Cottage in Southeast Seattle."