Des Moines Is Having Its Moment: The Puget Sound Waterfront Suburb Where Prices Keep Climbing

The median sale price for a single-family home in Des Moines hit $658,000 in June 2026, up 11.4 percent from the same month last year, according to data filed with the Northwest Multiple Listing Service. That pace outstrips both the broader King County median gain of roughly 6 percent and Seattle proper's 7.8 percent year-over-year figure for the same period — and real estate agents working the SR-509 corridor say demand shows no sign of cooling heading into the back half of the year.

The timing matters. Mortgage rates have edged down from their late-2025 peak above 7.5 percent to hover around 6.6 percent this week, freeing up a cohort of buyers who had been sitting on the sidelines since early 2024. At the same time, the completion of Phase 2 of Sound Transit's Link light rail extension — bringing a station to Federal Way by late 2025 — has redrawn commute math for anyone working in downtown Seattle or at the Boeing facilities in Renton. Des Moines, sitting roughly 18 miles south of Seattle along the Puget Sound shoreline, has absorbed much of that renewed interest.

Waterfront Access at a Fraction of the Alki Price

The city's defining asset is the Des Moines Marina, a 700-slip facility on Puget Sound managed by the Port of Des Moines that gives residents direct saltwater access without the premium attached to West Seattle's Alki Beach neighborhood, where comparable square footage routinely lists above $900,000. Marine View Drive, the arterial that hugs the bluff south of the marina, has seen six properties close above asking price in the second quarter of 2026 alone. Three of those were Cape Cod-style homes built in the early 1960s that sold after multiple-offer weekends — a pattern that had largely vanished from King County's outer suburbs during the 2023 slowdown.

The Des Moines Activity Center on 224th Street, a city-run hub that anchors the commercial strip above the waterfront, has become a useful proxy for neighborhood vitality. The surrounding block added four new small businesses between January and June 2026, including a specialty coffee roaster and a wine bar that opened in April — the kind of retail that tends to follow residential price appreciation rather than precede it. King County's 2026 assessor rolls, published in March, placed the median assessed value for residential parcels in Des Moines at $541,200, already a 9 percent jump over the prior year's assessment.

Who Is Buying — and What They're Getting

Agents at Windermere's Burien office describe a buyer pool that is increasingly mixed: first-time purchasers stretching their budgets from Beacon Hill and Columbia City, alongside investors picking up 1970s ramblers on streets like South 216th for renovation and rental. The city's rental vacancy rate stood at approximately 3.1 percent as of May, according to CoStar Group's Pacific Northwest tracking data — tight enough that landlords are commanding $2,100 to $2,400 per month for a three-bedroom, up from $1,850 eighteen months ago.

The wild card is the roughly 40-acre parcels along the waterfront north of the marina that remain zoned for mixed-use development under King County's 2024 Comprehensive Plan update. Two development teams filed preliminary applications with the city in the first quarter of 2026. Neither project has broken ground, but their existence alone has begun to shift conversations among long-term property holders about what the neighborhood looks like in a decade.

For buyers weighing a move now, the calculus is straightforward: inventory in Des Moines sits at about 1.8 months of supply, well below the four-to-six months that signals a balanced market. Homes listed under $600,000 are typically drawing offers within eight days. Buyers who want waterfront adjacency without competing against Mercer Island money or the Eastside's tech-inflated suburbs still have a window — but the June numbers suggest it is narrowing fast.