Seattle Office of Housing: Affordable Housing Programs and Policy

The Seattle Office of Housing (OH) is a City of Seattle department responsible for funding, administering, and setting policy for affordable housing programs across the city. Its work spans rental assistance, homeownership support, developer financing, and land-use tools that shape where and how affordable units are built. Understanding OH's structure and programs is essential for residents, developers, and advocates navigating Seattle's housing landscape, where the median home price has exceeded $800,000 (Zillow/King County Assessor data) and housing cost burdens fall disproportionately on low- and moderate-income households.

Definition and scope

The Seattle Office of Housing operates under the authority of the Seattle City Charter and is funded through sources that include the Seattle Housing Levy, the Mandatory Housing Affordability (MHA) program, federal Community Development Block Grant (CDBG) allocations, and HOME Investment Partnerships Program funds administered through the U.S. Department of Housing and Urban Development (HUD).

OH's jurisdiction is limited to programs and policies within Seattle city limits. It does not administer countywide housing programs — those fall under King County government through its own housing authority and human services divisions. State-level housing finance functions, including the issuance of Low Income Housing Tax Credits (LIHTC) for Washington, reside with the Washington State Housing Finance Commission (WSHFC), not with OH. Federal public housing in Seattle is managed by the Seattle Housing Authority (SHA), a separate quasi-governmental entity distinct from the Office of Housing.

This page addresses OH's programs and policies as a City department. It does not cover SHA's public housing portfolio, WSHFC tax credit administration, or King County's regional housing programs.

How it works

OH operates through three primary mechanisms: direct loan and grant financing to affordable housing developers, administration of the Seattle Housing Levy, and oversight of inclusionary zoning requirements under the Mandatory Housing Affordability program.

Seattle Housing Levy
Voters authorize the Seattle Housing Levy, a property tax levy dedicated to affordable housing. The 2023 levy renewal, approved by Seattle voters, raised the authorization to $970 million over seven years (City of Seattle Housing Levy). Levy dollars flow to rental production and preservation, operating and maintenance funding, homebuyer assistance, and homelessness prevention programs.

Mandatory Housing Affordability (MHA)
Under MHA, developers who build in upzoned areas of Seattle must either include affordable units on-site or pay a fee into the OH fund. The in-lieu fee rate varies by zone and building type, with commercial projects in high-intensity zones paying fees calculated per square foot of development (Seattle OH MHA Program). OH collects these contributions and deploys them through competitive funding rounds to nonprofit housing developers.

Loan and Grant Programs
OH issues low-interest loans and grants to nonprofit and mission-driven developers to finance affordable rental housing. Projects must meet income-targeting requirements, typically serving households earning at or below 60% of Area Median Income (AMI), with some programs targeting 30% AMI — the threshold at which households are considered extremely low income under HUD definitions.

The funding pipeline follows a structured sequence:

  1. OH publishes a Notice of Funding Availability (NOFA) specifying eligible uses, income targets, and scoring criteria.
  2. Developers submit applications with project pro formas, site control documentation, and evidence of other financing commitments.
  3. OH staff conduct underwriting reviews; projects are scored on financial feasibility, depth of affordability, location, and developer capacity.
  4. The Seattle City Council approves loan commitments above certain thresholds.
  5. Executed loan agreements include ongoing compliance monitoring requirements, typically spanning 50 years.

Common scenarios

Scenario 1: Nonprofit Developer Seeking Construction Financing
A nonprofit housing organization acquires a site in the Rainier Valley and seeks gap financing to complete a 60-unit building serving households at 30–60% AMI. The developer applies during an OH NOFA cycle, receives a low-interest construction loan that converts to a permanent loan at stabilization, and enters a 50-year regulatory agreement restricting rents. This type of project may also layer WSHFC tax credits with OH funding.

Scenario 2: First-Time Homebuyer Assistance
A household earning 80% of AMI seeks down payment assistance to purchase a home in Seattle. OH's HomeWise and similar programs provide deferred-payment loans that reduce the upfront cash barrier. These loans are typically repaid when the property is sold or refinanced, recycling public dollars back into the program.

Scenario 3: MHA Fee Payment
A private developer constructing a market-rate apartment building in South Lake Union pays a per-square-foot MHA fee to OH rather than including on-site affordable units. OH pools these fees with levy dollars and allocates them through the next competitive funding round to affordable housing projects elsewhere in the city.

Scenario 4: Preservation of Existing Affordable Stock
A private landlord holding a Section 8 contract notifies tenants of intent to opt out of the federal program. OH's preservation tools — including acquisition financing for nonprofit purchasers — can be deployed to help a mission-driven buyer acquire the property and maintain affordability restrictions, preventing displacement of existing residents.

Decision boundaries

Understanding what OH administers versus what other entities control prevents common navigation errors.

Function Administered By
Seattle Housing Levy programs Seattle Office of Housing
MHA fee collection and deployment Seattle Office of Housing
Public housing units in Seattle Seattle Housing Authority (SHA)
Low Income Housing Tax Credits (Washington State) Washington State Housing Finance Commission
Section 8 voucher issuance Seattle Housing Authority / HUD
Countywide housing programs King County
Land use and zoning approvals Seattle Office of Planning and Community Development / SDCI

Zoning decisions that enable affordable housing — such as upzones that trigger MHA requirements — originate with the Seattle Office of Planning and Community Development and are enacted by the Seattle City Council. OH implements the affordability obligations that flow from those zoning decisions but does not set land use policy. Similarly, Seattle housing policy at a strategic level involves multiple departments and the Mayor's office; OH is the primary implementing agency but not the sole policy actor.

Residents seeking emergency rental assistance or homelessness services are typically directed to the Seattle Human Services Department or to Seattle's homelessness response infrastructure, which operates through separate funding streams and administrative structures from OH's capital programs.

Broader background on Seattle's civic structure, including how departmental authority is distributed across city government, is available through the site index.

References

Read Next

King County Government: Structure, Services, and Relationship to Seattle This page examines how King County is structured, which services it delivers directly to residents, how its authority... Seattle Office of Planning and Community Development: Land Use and Zoning This page covers OPCD's role in administering zoning codes and the Comprehensive Plan, the mechanics of land use... Seattle City Council: Structure, Members, and How It Works This page covers the council's legal structure, how members are elected, the mechanics of how legislation moves through the...