Puget Sound Small Multifamily Market Update: Higher Rates Raise the Bar for Sellers and Buyers

The biggest change this week: financing became more expensive

The average 30-year fixed mortgage rate increased from 7.03% to 7.28% during the week ending October 1, according to Freddie Mac. That was the largest weekly increase in approximately four years and the sixth consecutive weekly increase.

At the same time, the 10-year Treasury yield—an important benchmark for real estate borrowing costs—briefly reached 5.34%, its highest level since 2002, according to Reuters.

The effect is different for two- to four-unit properties than it is for five- to 20-unit apartment buildings.

For duplexes, triplexes and fourplexes, higher residential mortgage rates immediately reduce purchasing power. A 25-basis-point increase adds approximately $169 per month in principal and interest for every $1 million financed on a 30-year loan. That can be enough to affect qualification or force a buyer to lower the price they can pay.

For five- to 20-unit properties, the change shows up through debt-service coverage and cash-on-cash returns. Buyers are likely to require a higher cap rate, more equity, stronger in-place income or favorable financing terms before moving forward.

Tacoma and Puyallup triplexes still deserve attention

Higher rates do not eliminate the opportunity in Tacoma and Puyallup triplexes. In many cases, they strengthen the importance of the property’s owner-occupant story.

A triplex can appeal to both an investor and a buyer who wants to occupy one unit while collecting rent from the other two. When the owner’s unit is attractive, the other rents are properly documented and the building does not require major immediate repairs, this can create a compelling alternative to buying a similarly priced single-family home.

There is also a meaningful regulatory distinction. Washington’s rent-increase limitations generally exempt a duplex, triplex or fourplex when the owner occupied one unit as a principal residence at the beginning of the tenancy and continues to live there, subject to the law’s ownership requirements. The exemption is explained in RCW 59.18.710.

That does not automatically make every triplex a strong owner-occupant listing. The layout, condition, vacancy status, existing leases and lender treatment of rental income all matter. But a property that checks those boxes may have a broader buyer pool than a conventional rental-only investment.

Small-apartment pricing must reflect current debt costs

The latest comprehensive regional sales report covers the second quarter, before the recent jump in Treasury yields. Puget Sound recorded 47 multifamily transactions totaling $543 million during Q2 2026. Transaction volume was nearly 20% below the prior quarter.

The regional average cap rate was 5.7%. Reported averages included 5.7% in Seattle, 6.1% in South King County and 5.1% in Snohomish County.

Those figures are useful historical benchmarks, but they should not be applied mechanically to a property being valued today. When borrowing costs rise after the comparable sales close, buyers commonly respond by lowering their price, increasing their down payment or requiring the seller to provide financing.

For sellers who want to preserve a higher price, the most effective tools may include:

• Seller financing at a rate below conventional commercial debt;
• An assumable existing loan, when available;
• Improving occupancy and documenting collections before marketing;
• Completing high-priority repairs that would otherwise cause buyers to increase reserves; and
• Providing complete leases, utility records, tax statements and operating expenses.

A property marketed primarily on projected rent increases is more difficult to finance than one with clean, verifiable in-place income.

Rents are holding up, but growth varies by submarket

The latest data showed improving occupancy and modest rent growth across much of Puget Sound. Q2 average rents and vacancy were reported as follows:

Pierce County continues to offer relative affordability and potentially stronger going-in yields, although its reported vacancy remained higher than King and Snohomish counties. Kitsap showed the region’s strongest quarterly occupancy improvement.

The takeaway for owners is that rent growth alone should not be expected to offset higher interest rates or underestimated expenses. Valuations should be based on actual trailing utility, insurance, repair, property-tax and management costs—not a generic expense percentage or an aggressive pro forma.

More inventory gives buyers additional leverage

There has not yet been a reliable public weekly report isolating two- to four-unit inventory. However, the broader residential market provides useful context for owner-occupant demand.

As of July, active listings were up 24% year over year in King County and 35% in Snohomish County, while Seattle-area pending sales were down 15.6%, according to a summary of Northwest MLS and Redfin data published by Axios Seattle.

These figures include more than multifamily properties, but they confirm that buyers already had more choices before the latest interest-rate increase. Sellers should expect buyers to compare listings carefully and place a premium on condition, income documentation and pricing.

Regulatory changes belong in the valuation

Washington’s maximum annual rent increase for covered properties will be 10% in 2027, compared with 9.683% in 2026. Current limits, exemptions and notice requirements are available through the Washington State Department of Commerce.

HUD’s fiscal-year 2027 Fair Market Rents also became effective October 1. Owners with voucher tenants should review the applicable payment standard and utility allowance rather than assuming the prior benchmark remains unchanged.

These rules do not affect every property in the same way. The age of the building, owner-occupancy status, ownership structure, location and existing tenancies can materially affect achievable income and therefore value.

What this means for Puget Sound multifamily owners

The market is not frozen, but buyers are underwriting more cautiously. Sellers are most likely to succeed when they identify the correct buyer pool and prepare the property’s financial story before setting the price.

For an owner-occupant-oriented Tacoma or Puyallup triplex, that means demonstrating how the two rental units reduce the buyer’s effective housing cost. For a five- to 20-unit building, it means showing that current NOI supports today’s financing—or offering terms that help bridge the gap.

If you own a duplex, triplex, fourplex or small apartment building in King, Pierce, Snohomish or Kitsap County, I can provide a confidential valuation based on current comparable sales, income, expenses, financing conditions and the buyer pool most likely to purchase your property.

Charles Burnett, CCIM
Sound Property Group 
206.931.6036
charles@soundmultifamily.com
SoundMultifamily.com