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//King County Condo Market 2026: Why Weak Pro Formas Break

King County Condo Market 2026: Why Weak Pro Formas Break

Most condo and townhouse pro formas in King County were built for a market that no longer exists.

Seattle just posted the biggest home-price drop in the country, with inventory surging. But the county-wide headline hides what actually matters for builders.

The market changed. The pro formas didn’t.

Here’s what the NWMLS March data actually shows for King County condos:
→ Active listings: up 40% year-over-year
→ Pending sales: down 19%
→ Median price: up just 2.5%

Read those three together. Supply is surging, demand is pulling back, and price isn’t rising enough to cover the gap.

The segment feeling it first? Attached product — condo and townhouse infill.

Detached is holding better. But infill margins live and die on absorption pace — and absorption just slowed.

This is not a crash. It’s stabilization, not collapse.

So what changed?

Supply finally caught up. Builders kept delivering while buyers turned selective. On a 6-unit infill townhouse project, a two-month slip in absorption can quietly erase the margin the pro forma assumed in a hot market.

For anyone underwriting a project in King County right now — developer, GC, investor — one question matters more than the headlines:

WHICH segment, WHICH submarket, WHICH absorption pace.

Not “is Seattle still growing?” It is.

But growth doesn’t mean every project pencils. Feasibility does.

If you’re evaluating a condo or townhouse infill deal in King County and want a second read on the numbers before you commit — I’m happy to take a look.

#SeattleRealEstate #KingCounty #Feasibility #ConstructionManagement #RealEstateDevelopment

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1 thought on “King County Condo Market 2026: Why Weak Pro Formas Break
  • eros

    Source: NWMLS March 2026 Market Snapshot, King County condo segment. The detached numbers tell a calmer story — which is exactly the point. The county-wide median hides what’s happening segment by segment.

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Eros Belotti 01.

Eros belotti

Construction project manager with over 15 years of experience in Europe and the Canary Islands. Specialized in modular housing, container construction, real estate development and international project management. Founder of Reforma Vivienda Tenerife and Donkey Lab.

© Eros Belotti 2026 / All rights reserved.
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