Washington's New Condo Liability Law: What It Means for Mixed-Use Commercial Development in Snohomish County
If you own, develop, or invest in commercial real estate in Washington State — and especially in the fast-growing Snohomish County market — a landmark piece of legislation passed in early 2025 deserves your full attention. House Bill 1403, Washington's new condo liability reform law, may be the single biggest policy shift for mixed-use development that this region has seen in decades.
At Weitz Commercial, we work with investors, developers, landlords, and tenants across Snohomish County and the greater Puget Sound region every day. The question we're already hearing from clients is simple: Does this change anything for me? The answer, in most cases, is yes — and understanding how can give you a meaningful edge in this market.
The Problem: Why Washington Stopped Building Condos
For years, Washington State carried one of the most developer-unfriendly condo liability regimes in the country. Under the old Washington Condominium Act, a developer could be exposed to construction defect lawsuits for up to eight years after the last unit was sold — and the standard for what counted as a "defect" was remarkably low. Plaintiff attorneys became adept at filing suits over technical workmanship violations that had no real impact on a building's function or a homeowner's quality of life.
The result was predictable: developers stopped building condos. Why absorb a decade-long liability tail when you could build apartments, collect rent, and retain ownership? The for-sale multifamily market in Washington's urban cores — including Everett, Marysville, Monroe, and the broader Snohomish County growth corridors — effectively dried up.
This mattered enormously for commercial real estate. Mixed-use development — ground-floor retail or office space below residential units — is the economic engine of walkable, high-density corridors. Without condos as a viable product type, mixed-use projects became harder to finance, less attractive to investors, and less likely to pencil out in secondary markets like Snohomish County.
What HB 1403 Actually Does
Signed into law in 2025, House Bill 1403 makes several targeted but significant changes to Washington's condo liability framework:
- Private Defect Liability Insurance for Smaller Projects. For condo developments of up to 12 units, builders can now offer an express warranty backed by private insurance rather than facing open-ended statutory liability. This changes the risk calculus dramatically for small-format urban infill projects.
- Narrowed Definition of Defects. The bill reforms what qualifies as an actionable construction defect, reducing the ability to pursue claims over minor technical violations that don't materially affect building performance. This directly addresses the litigation abuse that made condo development so risky.
- HOA Board Immunity Protections. Board members who in good faith decline to file a defect suit are now explicitly protected from personal liability. Under the old law, board members felt legally compelled to authorize lawsuits — a pressure tactic that plaintiff attorneys exploited to their advantage.
- Strengthened Pre-Claim Process. The new law gives builders a meaningful right to cure issues before litigation commences, shifting incentives from courtrooms back to construction sites — where they belong.
What This Means for Snohomish County Commercial Real Estate
Snohomish County sits at an inflection point. Population is growing, land is cheaper than King County, and infrastructure investment — from the Lynnwood Link light rail extension to the expansion of the Highway 2 and US-2 corridors — is attracting new business activity. The county has long been viewed as a bedroom community to Seattle and Bellevue, but that narrative is changing.
HB 1403 accelerates that shift in several concrete ways:
1. Mixed-Use Projects Become More Viable
For years, the standard model for mixed-use development in Washington was: build apartments above retail, never condos. That kept the developer on the hook as a long-term landlord and limited the pool of equity partners willing to fund projects. With reduced liability exposure, condo-over-retail mixed-use projects in Everett's downtown core, Marysville's Highway 528 corridor, and Lynnwood's transit-oriented development zone become much more attractive to developers and the investors who back them.
2. Ground-Floor Retail Demand Gets a Boost
More condo development means more rooftops — and more rooftops are the single most important driver of ground-floor retail demand. Restaurant operators, service retailers, medical and dental offices, and fitness concepts all follow residential density. For owners of commercial strip centers, downtown storefronts, or flex spaces in Snohomish County, this legislation is a tailwind.
3. Smaller Infill Developers Now Have a Path Forward
The private insurance provision for projects of up to 12 units is particularly meaningful in Snohomish County, where many of the most promising development opportunities are mid-scale urban infill sites — not the 200-unit high-rises you see in downtown Seattle. Small condo buildings of 6–12 units in Monroe, Edmonds, or Bothell can now move forward with a cleaner risk profile, opening the door to a new class of local developer.
4. Transit-Oriented Development Gains New Momentum
Washington's 2025 Transit-Oriented Development law (HB 1491) requires cities to allow denser development near major transit stops. Paired with HB 1403, this creates a powerful one-two punch: more density is legally required, and the primary residential product type that supports commercial mixed-use is now financially viable to build. Snohomish County transit nodes — including the new Lynnwood City Center Link station — are primed to benefit.
The Investor and Owner's Lens: Questions to Be Asking Now
If you currently own or are considering acquiring commercial property in Snohomish County, here are the strategic questions this legislation should prompt:
- Does your site have mixed-use potential? With the liability overhang on for-sale residential reduced, sites previously dismissed as "only good for apartments" may now support a condo component that meaningfully improves project returns.
- Are you near a transit corridor or TOD zone? HB 1491 mandates higher density near major transit. Combine that with HB 1403, and parcels adjacent to light rail stations or major bus routes are worth a fresh look at current valuations.
- Is your retail asking rent supported by the existing rooftop count? If not, increased residential construction in your submarket could close that gap faster than you might expect.
- Are you positioned to capitalize on increased buyer demand? A healthier condo market means more owner-occupant buyers — including small business owners who prefer to own their space. Depending on your asset type, that represents an expanded buyer pool when it comes time to sell.
What This Law Doesn't Fix — And What to Watch
HB 1403 is a significant step forward, but it isn't a silver bullet. Washington's condo market won't transform overnight. Construction costs remain elevated. Interest rates continue to affect buyer purchasing power and developer financing. And not every jurisdiction in Snohomish County has updated its zoning code to reflect the state's broader housing legislation.
A note on the insurance mechanism: The new warranty-backed insurance product for projects under 12 units is still developing as a market. Developers should work closely with legal counsel and experienced commercial real estate advisors before structuring a deal around assumptions about insurance availability or pricing.
Additionally, keep an eye on Washington's rent stabilization legislation (HB 1217), which passed in 2025 and caps annual rent increases on residential units. While commercial leases are not affected, landlords of mixed-use properties with residential components will need to factor these new rules into their underwriting and long-term hold projections.
The Bottom Line for Snohomish County Commercial Real Estate
Washington's new condo liability law won't make headlines the way a major acquisition or a new corporate campus announcement might. But for anyone paying close attention to the commercial real estate market in Snohomish County, it's the kind of structural change that quietly reshapes opportunity over the next five to ten years.
More mixed-use development. More ground-floor retail demand. More density near transit. More viable paths for small infill developers. These are the downstream effects of a law that, on the surface, looks like a technical fix to an insurance and liability problem.
If you want to understand how these shifts affect the specific properties, corridors, or submarkets you're focused on, that's exactly the kind of conversation we have every day at Weitz Commercial.
Commercial real estate moves fast, and the policy landscape that shapes it moves with it. I've spent my career tracking both — helping clients in Snohomish County and across the Puget Sound region navigate acquisitions, dispositions, leasing, and investment decisions with clarity and confidence.
Whether you're a seasoned investor reassessing your portfolio, a business owner evaluating your next location, or a developer exploring what the new legislative environment makes possible, I'd genuinely enjoy the conversation. The opportunities in this market are real — and so are the complexities. Let's talk through both.
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