DEVELOPMENT: Five years in, is Mandatory Housing Affordability doing what it was expected to?

By Anne Higuera
Reporting for West Seattle Blog

Six years into the city’s efforts to have developers help meet the need for affordable housing, things aren’t turning out exactly as expected. Seattle’s Mandatory Housing Affordability (MHA) laws, which the City Council unanimously made citywide in 2019, were supposed to both provide more income-restricted units in market-rate buildings, and fund the construction of additional low-income housing. While some of that has happened, the MHA is also being blamed for making it harder to build multi-family housing units in Seattle, according to a report released recently.

Mayor Bruce Harrell’s office commissioned the report by BERK Consulting and Heartland LLC to evaluate how well the MHA policies, which included select upzoning to increase density, met goals during the first 5 years. After giving latitude to construct taller buildings with more units because of the upzoning, the city asked developers to either commit to providing a limited number of low-income units in their buildings for 75 years or to pay a fee based on the building square footage. It might seem like a simple choice to make, but it’s complicated by market conditions, land costs and in the case of the period from 2019–2024, the turmoil caused by the pandemic. The report paints a picture of declining feasibility not just in Seattle but across 13 “peer” cities they examined, where higher interest rates and increasing construction costs made it difficult for projects to pencil out. “MHA requirements play a relatively small but important role,” notes the report, adding that even with better market conditions, the cost of complying with the MHA could well be the deciding factor for a developer to say, “No go.”

As bleak as that sounds, many thousands of new housing units have been built since MHA passed. Through 2023, developers paid $300 million in fees to the city. The report points to MHA funds supporting 4,702 new low-income units, but those funds were pooled with other financing, so it’s hard to tease out exactly how many units can be attributed solely to MHA funds. The developers themselves only built 404 income-restricted units in projects during that time. The stated goal was for MHA to be directly responsible for 6,000 new units over 10 years, with no specific goals for how much of that would be achieved through developer fees. It turns out that 95% of developers opted to pay fees for their projects, most of which were either low-rise or high-rise. Of the 5% who did not, the vast majority of the income-restricted units were built in mid-rise projects.

While the preference for paying fees has been consistent, the amount collected has varied significantly. Fees from developers made up almost half of the Office of Housing budget in 2021 by bringing in $74 million that year, but that is down to a projection of $22 million for 2025. The Office of Housing does have other revenue streams, including the Housing Levy and Payroll Expense Tax on companies with high earners. That means the opportunity to build many more affordable housing projects remains, but not because multi-family housing is booming generally.

In light of some of the challenges during MHA’s first 5 years, and knowing that the legislation was written based on much different economic situation than the current one, the BERK/Heartland report makes a number of recommendations to take that all into account and still encourage more affordable housing:

* Adjust MHA fees annually based on market conditions, housing type and location, rather than using a formula

* Allow fees to be paid later or over time (currently paid early in the process, which is an added financing cost)

* Raise fees or remove fees entirely as an option to ensure more income-restricted units in projects.

* Remove red tape: Streamline permitting and eliminate design review, adjust other miscellaneous policies

In a letter to the City Council last week, Mayor Harrell indicated he will look into the possibility of fine-tuning the MHA, saying the report, “…serves to confirm that MHA can be a useful tool, but it requires careful design and active management to ensure it does not result in unintended consequences for Seattle’s housing market.” Harrell’s Press Secretary Callie Craighead told WSB that a 5- to 7-person technical review committee will be convened to assess and provide feedback on the report. Craighead said the BERK/Heartland study cost $250,000 and was funded by MHA administrative fees collected by the Office of Housing.

20 Replies to "DEVELOPMENT: Five years in, is Mandatory Housing Affordability doing what it was expected to?"

  • Kyle April 6, 2025 (3:32 pm)

    95% chose to pay the fees that went into some opaque accounting where the Housing office can’t even tell us how many homes they built were attributed to MHA funds. Like the report recommends get rid of the fees and make developers build ACTUAL housing.

  • bolo April 6, 2025 (9:22 pm)

    So who came out ahead on this? The city? Renters? Homebuyers? Developers? Investors? The housing needy? The local community?

    • WS Urbanist April 7, 2025 (9:26 am)

      NIMBYs probably. Consider how Cathy Moore (who has opposed development in her neighborhood of maple leaf) wants to expand MHA to all areas being upzoned in the new comprehensive plan. This suggests to me that she may view MHA as a mechanism to restrict housing development rather than encourage it (all while appearing to be an advocate for affordable housing).

  • lillycat April 6, 2025 (10:40 pm)

    Totally agree Kyle, the city collected a large amount of money to build affordable housing. Where did it go and where is the housing? 

  • JustSomeDude April 7, 2025 (8:57 am)

    People care about the homeless, and it’s unfair and misleading to suggest they don’t just because they aren’t willing to pay more taxes for projects that do nothing to help anybody, or enable bad behavior. If the government isn’t being a good steward of resources, there is no motivation to provide them with more resources.

    Note: Reflecting on current themes,not the content of your post.  

  • Isaac April 7, 2025 (9:18 am)

    Fantastic reporting. Thanks for this.

  • anonyme April 7, 2025 (9:32 am)

    The answer is not fewer regulations and more giveaways to developers.  Fewer carrots, more sticks, and more government accountability.

  • Don Brubeck April 7, 2025 (9:35 am)

    RE: “The report points to MHA funds supporting 4,702 new low-income units, but those funds were pooled with other financing, so it’s hard to tease out exactly how many units can be attributed solely to MHA funds.”  Deep in the report on page 84, it says, “…this study estimates that the program has resulted in 1,233 …affordable housing units as of the end of 2023. This is significantly slower than the pace needed to produce 6,000 new affordable units in ten years.”

  • Johnny Stulic April 7, 2025 (9:39 am)

    Well, who could have known that making it more expensive for builders to build housing would lead to fewer but more expensive units and rents? Someone should have warned the public. Oh wait, every single builder and developer did but, as usual, the Seattle City Council knows best.

  • Jay April 7, 2025 (10:14 am)

    This program works well in South Korea and many other places with a cost-of-living crisis because there’s no way to buy-out of the policy, developers have to builds the units. It defeats the purpose if developers can just pay a fee and then the city… just comes up with a plan to acquire land and build units itself?

    • Kyle April 7, 2025 (12:28 pm)

      This is the way. Clearly the city can not build and acquire land in any efficient way. Force the developers to build the housing.

      • WSzombie April 7, 2025 (2:34 pm)

        How do you plan on “forcing” developers to build the housing? Developers will just leave or close business if they are forced to develop projects that are less profitable than other projects. Imagine if they actually lost money on projects after being forced to build them. That’s some crazy dystopian world we would be living in if the government forced businesses to take a loss. 

        • Kyle April 7, 2025 (6:15 pm)

          Meant eliminating the option to pay a fee instead. So if they do build they can’t build just luxury units, but need to build affordable housing too. That’s a market distortion Seattle needs. Every developer will determine if it “pencils out” same as they do today. 

          • Andrew April 7, 2025 (6:53 pm)

            Problem with eliminating the fee (with the current MHA structure) is that it doesn’t work at smaller scales. I want to build 2 homes in my backyard, but with MHA rules, 1 of the 2 would have to be “affordable”. What makes sense at larger scales breaks down for small projects. I really wish they would make a distinction for single-lot or small projects (maybe 4 homes or fewer?). As is, the MHA fees makes the project not feasible in my case.

  • Also John April 7, 2025 (12:25 pm)

    What a surprise…    MHA isn’t working!?   I paid a $12,000 fee to MHA for the construction of my backyard cottage.   How about giving me back that 12 grand city?

  • B W April 7, 2025 (8:40 pm)

    “… things aren’t turning out exactly as expected.”Pretty much sums up Seattle politicians, doesn’t it?

  • Admiral-2009 April 7, 2025 (10:44 pm)

    Also John – if the back yard cottage is a rental you can recover the added MHA cost by increasing the rental amount, aka making the unit less affordable.  This is what the developer’s do to recover the added MHA costs!

  • WS Guy April 8, 2025 (12:52 am)

    This isn’t working because developers need to be “forced” not “incentivized”.  We should pass a law that every company with a construction license must build at least 20 affordable units per year, or else face steep fines.

    • k April 8, 2025 (7:05 am)

      Developers aren’t themselves the construction company.  That is hired out to the contractors.  Those with contractor’s licenses doing the building are not developers.  If you found a way to single out developers from a license standpoint, this rule would eliminate small businesses, and make it impossible to start a new development company.

  • Erithan April 10, 2025 (12:39 pm)

    MHA is a joke, the thresholds are so high the people who really need the 1-4 units that maybe get built still can’t afford them. Even at the “cheaper” end their like closet sizes too.

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