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Best Practices for Providing Affordable Housing
Local governments planning under the GMA are required to plan for ensuring the vitality and character of established residential neighborhoods, as well as providing for the existing and projected housing needs of all economic segments of the community. This can be a significant challenge for many jurisdictions. Examples of tools to achieve those goals include planning policies, regulations, and design guidelines.
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A
Accessory Dwelling Units

Allowing the development of accessory units is a technique for providing affordable housing which uses surplus space in existing single-family homes. An accessory dwelling unit is an additional living unit, including separate kitchen, sleeping, and bathroom facilities, attached or detached from the primary dwelling unit, on a single-family lot.

Attached units, contained within a single-family home, know variously as a "mother-in-law apartments,' "accessory apartments," or "second units," are the most commonly encountered type of accessory dwelling unit. Accessory apartments typically involve the renovation of a garage, basement family room, attached shed, or similar space in a single-family home.

Less common are detached "accessory cottages" or "echo homes," which are structurally independent from the primary residence. These units, typically placed in the rear yard area, are usually constructed or installed for the purpose of providing for an elderly parent being cared for the their adult children living in the primary unit. Accessory cottages are less frequently allowed in zoning codes and are generally more expensive to build than accessory apartments. [Accessory Units: An increasing Source of Affordable Housing, p. 5]
Adaptive Reuse

C
Cluster Subdivision

D
Density Bonus



Featured Case Study

Renton Town Center
One of three multifamily rental developments adjacent to a major transit hub: Burnett Station, The Renaissance, and Metropolitan Place. All are mixed use. Metropolitan Place includes a park-and- ride operated by king County Metro...
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