Sammamish New Build or Resale? Warranty, HOA and the 2026 Law

New construction on the plateau typically prices at a premium over comparable resale, because builders rarely cut the base price and instead negotiate through design-center credits or rate buydowns. Resale homes, especially ones past 30 days on the NWMLS, open the door to real price talk. At 47 days on market across Area 540, more resale sellers are willing to move on price than most builders are.

In my closings across Sammamish this year, buyers comparing a production-built home in a newer plateau community against a 15-year-old resale three streets over almost always find the builder's “price” is really a bundle: a fixed sales price plus upgrade packages priced separately. A resale seller sitting at 47 days, by contrast, has already watched two open houses pass with no offer. That seller negotiates on price, closing costs, or repairs.

If you are working with a Sammamish buyers agent, ask for the actual price-per-square-foot comparison across both inventory types before you fall for a builder's “incentive” headline. Builder incentives often move value into upgrades you'd choose anyway, not into the purchase price itself.

What to verify: ask your lender to run both scenarios, new-build with builder incentives and resale with a seller credit, side by side on the same rate and term. The numbers rarely match the marketing.

A Sammamish new build still carries the builder's standard structural and workmanship warranty, and buyers in small HOA buildings now have an added warranty option under House Bill 2304, effective June 11, 2026. The exact scope and term of any warranty is a contract detail. Read the builder's purchase agreement and the warranty document itself before you write.

I tell every new-construction buyer on the plateau the same thing: the sales brochure is not the warranty. The warranty document, usually attached as an exhibit to the builder's purchase and sale agreement, spells out what is covered, what is excluded, and how claims get filed. HB 2304 widened the warranty landscape for smaller association buildings specifically, so if you're buying in a townhome-style community with a small HOA, ask the builder directly whether that option applies to your unit.

This is not a place to guess. Confirm the specific warranty terms, exclusions, and claim process with the builder's sales office and, where the contract allows, with your own real estate attorney before removing contingencies. A general contractor's warranty and a builder's structural warranty are not interchangeable, and Sammamish builders vary in what they offer beyond the state minimum.

One honest limitation: warranty language changes by builder and by community, and I am not your attorney. Have your closing attorney or escrow officer read the actual warranty exhibit, not a summary, before your inspection period closes.

Under Senate Bill 5129, effective January 1, 2026, Washington HOAs must provide buyers a resale certificate that includes reserve account information and assessment history before the sale closes. This applies to resale purchases in an existing association, not to a builder selling a brand-new unit with no association history yet.

In practice, this means a Sammamish resale buyer in a community like those off East Lake Sammamish Parkway or near Pine Lake gets a document showing current dues, any special assessments on the books, and how much the association has set aside in reserves. I walk buyers through this certificate line by line, because a healthy-looking dues number next to a thin reserve account is a flag, not a comfort.

New construction doesn't come with this history, because the HOA often doesn't exist yet or has no financial track record. That is itself a tradeoff: you gain a warranty, but you lose the paper trail a resale certificate gives you. Browse active Sammamish plateau homes for sale with this in mind and ask which listings are resale-certificate-ready versus pre-HOA new construction.

What to verify: have your title or escrow company confirm the resale certificate was delivered within the timeframe your purchase agreement requires, and read the reserve study summary yourself rather than relying on a listing agent's paraphrase.

Active new construction on the Sammamish plateau is concentrated in later-phase developments near Sammamish Town Center and in smaller infill communities replacing older single-family lots closer to Issaquah-Fall City Road and East Lake Sammamish Parkway. Inventory shifts fast here, so confirm current builder activity with a local agent before assuming a community is still selling.

What I see every fall on the plateau is infill building outpacing large master-planned communities. Sammamish has limited raw land left, so builders are tearing down single older homes and replacing them with two or three new units on the same lot, particularly closer to the Town Center core. That changes the HOA picture too, since these smaller infill projects are exactly the kind of small-building association HB 2304 addresses.

Larger subdivision-style new construction still exists on the plateau's edges, but availability moves month to month. Checking the Sammamish housing market for active new-construction listings before you tour is faster than relying on a builder's own site, which often lists communities that are already sold out.

If school assignment matters to your household, confirm the specific assignment for any address directly with Issaquah School District before you write an offer. Builder marketing materials are not a reliable source for attendance boundaries.

Resale sellers are negotiating harder than builders are this fall. With Sammamish resale inventory sitting at 47 days on market across Area 540, per the NWMLS King County area report for September 2026, sellers past that mark are motivated on price, repairs, and closing costs. Builders, by contrast, protect their base price and negotiate through incentives instead.

I've written offers on both sides this year, and the difference in posture is consistent. A builder's sales representative has a price list that corporate sets; they can throw in a rate buydown or appliance upgrade, but they rarely cut the base number because it sets a comparable for every future sale in that community. A resale seller at 47 days has no such constraint and often just wants the listing closed.

That doesn't make resale automatically the better buy. A motivated resale seller might concede on price but leave you with deferred maintenance a warranty would have covered. A builder holding firm on price might still be the stronger deal once you account for a structural warranty and, where it applies, the HB 2304 small-building option.

What to verify: ask your agent to pull the actual days-on-market and price-change history for any resale listing you're considering, not just the current list price. That history tells you how much room is realistically on the table.

Before choosing, a Sammamish buyer should ask three things: what the warranty actually covers and excludes, what the HOA's reserve account and assessment history show, and how long the property has sat on market relative to the 47-day plateau average. Those three answers tell you more than the listing price alone.

Ask the builder directly for the warranty exhibit, not a sales summary, and have your attorney or escrow officer review it before your contingency deadlines close. Ask the resale seller's agent for the full resale certificate required under SB 5129, including the reserve study, before you waive your inspection contingency. And ask your own agent to run comparable days-on-market data for the specific neighborhood, not a citywide average, since plateau pockets move at different speeds.

In my practice, the buyers who do best on the plateau treat new construction and resale as two different transactions with two different diligence checklists, not two flavors of the same purchase. A new build lives and dies on the warranty and the builder's track record. A resale lives and dies on the inspection and the HOA paperwork.

Confirm financing contingency timelines with your lender either way, since new-construction closings often run longer than a typical resale escrow and your rate lock needs to match.

Ready to compare an actual new-construction listing against a resale on the plateau this week? Talk to a Sammamish buyers agent at RexMont and get the warranty, HOA, and days-on-market numbers pulled before you write an offer.