Sammamish Down Payment Assistance Guide: ONE+ and Washington State Programs Explained (2026)

Saving for a down payment in 2026 feels like running on a treadmill set slightly too fast. You're moving, but the gap isn't closing. Groceries cost meaningfully more than they did two years ago. Rent went up and never came back down to where it was. Gas stabilized — sort of. The raise happened, maybe even a good one, but the savings account looks about the same every time you check. The problem isn't discipline. It's math. Housing prices in markets like Sammamish have outpaced savings rates for years, and the standard advice — "just save 20%" — has calcified into something closer to folklore than financial planning.

There is a program that changes the structure of the problem. ONE+ by Rocket Mortgage lets the buyer put down 1% of the purchase price while Rocket contributes a 2% grant — up to $7,000 — at closing. Not a loan. Not a deferred second lien that surfaces at the closing table when you sell a decade from now. A grant that is never repaid. A buyer who was $10,000 short is suddenly in a completely different position. ONE+ has no first-time buyer requirement, so repeat buyers qualify as long as their income falls within the King County limit. Washington's WSHFC Home Advantage program — with its notably generous $180,000 income ceiling for King County — fills the gap for buyers whose income or purchase price puts them outside ONE+'s range.

This guide covers both programs honestly. ONE+ has a $350,000 loan ceiling, and in a city where the median sold price for single-family homes runs around $1.65 million, that ceiling matters. For buyers shopping above it, Washington state programs are legitimate and well-funded alternatives. The right answer depends on your purchase price, income, and how you feel about a deferred loan versus a clean grant. Read through both and you'll know which path fits.

ONE+ by Rocket Mortgage: Washington's Only True Grant

Every other down payment assistance program discussed in this guide works as a second mortgage. You borrow money at favorable terms — sometimes 0%, sometimes deferred for 30 years — but it's debt that travels with the property and becomes due when you sell, refinance, or pay off the first mortgage. ONE+ is structurally different. Rocket Mortgage contributes 2% of the purchase price as a grant — money that is never repaid, never accrues interest, and carries no lien. The buyer contributes 1%. The transaction closes with 3% total equity and no back-end obligation on the grant portion. That structural difference is not a minor detail; it changes the long-term cost of the purchase.

The mechanics are straightforward. The buyer brings 1% of the purchase price to closing, Rocket contributes the 2% grant (capped at $7,000), and the loan is a 30-year fixed conventional mortgage. The maximum loan amount is $350,000 — which, at a 3% total down payment, corresponds to a purchase price of approximately $360,825. The income limit for King County is $114,800, regardless of household size for the purposes of this program. The minimum credit score is 620. There is no first-time buyer requirement — a repeat buyer who sold a home two years ago and is looking again qualifies on equal footing with someone buying for the first time. PMI applies until the borrower reaches 20% equity, which is standard for any low-down-payment conventional loan.

	ONE+ by Rocket Mortgage	Standard 3% Conventional
Buyer's down payment	$3,500 (on $350K home)	$10,500 (on $350K home)
Grant from Rocket	$7,000 — never repaid	None
Total down at close	$10,500 (3%)	$10,500 (3%)
Net cash out of pocket	$3,500 + closing costs	$10,500 + closing costs
Upfront savings	$7,000	—
Repayment required	No	N/A

The numbers in the table make the case plainly. Both buyers close with 3% down. One of them spent $7,000 less getting there, with no future obligation attached to the difference. Todd is an Executive Loan Officer at Rocket Mortgage and can pre-approve you for ONE+ the same day. Learn more about ONE+ and see if you qualify →

The ONE+ Ceiling: What It Means for Sammamish Buyers

The $350,000 loan limit is the honest constraint of ONE+, and in Sammamish it deserves direct treatment. The median sold price for single-family homes here runs approximately $1.65 million as of mid-2026. A $350,000 loan ceiling — corresponding to a purchase price of roughly $361,000 — does not reach the standard single-family home in almost any Sammamish neighborhood. That's not a criticism of the program; it's a market reality that shapes how buyers here need to approach it.

What does exist under that ceiling? Potentially some condominiums, if you can find them in Sammamish's limited condo inventory. The ARCH Homeownership Program maintains a small portfolio of covenant-restricted affordable homes in Sammamish at below-market prices, and those occasionally surface as purchase opportunities. Outside of those narrow scenarios, the typical Sammamish buyer shopping for a single-family home in Klahanie, Pine Lake, Beaver Lake, or anywhere else on the plateau will exceed the ONE+ purchase ceiling by a wide margin.

Price Range	What's Typically Available in Sammamish	ONE+ Eligible?
Under $320K	Extremely rare — limited condo inventory only	✅ Yes
$320K–$350K	Rare — possible in affordable covenant resales	✅ Yes
$350K–$500K	Below market for any standard home in the city	❌ No
$500K–$1.5M	Entry-level to mid-range single-family in most neighborhoods	❌ No
$1.5M+	Median and above — most of the market	❌ No

This doesn't mean ONE+ is irrelevant for Sammamish buyers. A buyer purchasing a covenant-restricted resale through the ARCH Homeownership Program could use ONE+ alongside it, and buyers with a dual income under $114,800 combined who are targeting affordable condo inventory should absolutely run the ONE+ pre-approval before closing that door. But the majority of buyers in this market — people targeting standard single-family homes — will be working with Washington state programs as their primary DPA path.

When You Need More: Washington's State DPA Programs

For Sammamish buyers whose purchase price exceeds $350,000 — which describes most of the market — Washington's WSHFC programs are among the strongest state-level offerings in the country. They don't give you a grant, but they give you real leverage: substantial deferred-payment second mortgages that solve the cash-to-close problem without requiring monthly payments or up-front repayment.

Home Advantage — The $180K Income Ceiling Program

The headline fact about Home Advantage is the income limit: $180,000 for King County, applicable to all household sizes. This is not a program designed for low-income buyers. A dual-income household in Sammamish earning $150,000 qualifies. A single professional earning $165,000 qualifies. The DPA comes as 4–5% of the first mortgage amount, structured as a 0% interest second mortgage deferred for 30 years, with no monthly payment on the DPA portion. Home Advantage works with conventional, FHA, VA, and USDA loans, which gives buyers flexibility that ONE+'s conventional-only requirement doesn't offer. There is no first-time buyer requirement. A 5-hour WSHFC-approved homebuyer education seminar is required before closing — online options are available through heretohome.org and are free of charge.

The key structural difference from ONE+ is that this money gets repaid. When you sell the home, refinance, or pay off the first mortgage, the DPA balance becomes due. For a buyer borrowing 5% of a $1.2 million loan, that's $60,000 that will need to be returned at some future closing table. The deferred structure means no drag on monthly cash flow, but buyers who plan to sell within a few years should account for the repayment in their projected proceeds.

House Key Opportunity — For Lower-Income First-Time Buyers

House Key Opportunity is designed for first-time buyers with lower incomes. Income limits for King County are lower than Home Advantage — this is a HUD-targeted program and the income ceilings reflect that. DPA of up to $15,000 is available as a 1% interest second mortgage deferred for 30 years. The first-time buyer requirement applies — defined as not having owned a home in the past three years. One important distinction: House Key is funded through bond financing, which carries the potential for IRS recapture tax if the home is sold within nine years, income has grown significantly, and there is a capital gain. For most buyers, the three conditions rarely all apply simultaneously, but it's worth understanding before choosing this route.

HomeChoice — Disability Households

HomeChoice provides up to $15,000 in down payment assistance for borrowers or households where a member has a disability. It operates as a 1% interest deferred second mortgage and is available statewide, with income limits of $147,400 in King County. If this applies to your household, it can be layered with a Home Advantage first mortgage.

The Covenant Homeownership Program

The Covenant Homeownership Program offers substantial assistance — historically in the range of $16,500 to $82,500, with maximum available support up to $90,000 — structured as a shared-appreciation second mortgage with no traditional interest and no payments for 30 years. Eligibility is tied to specific demographic criteria related to Washington's history of racially restrictive housing covenants. Qualified buyers should request program details directly through WSHFC, as funding allocation and availability vary.

The honest comparison between all of these and ONE+: every WSHFC program defers the cost, not eliminates it. ONE+ eliminates it. Both approaches solve the cash-to-close problem. The WSHFC programs solve it across a far wider price range and income spectrum — which is exactly why they exist.

ONE+ vs. Washington Bond Programs: The Direct Comparison

	ONE+ by Rocket	WSHFC Home Advantage	WSHFC House Key
Assistance type	True grant — no repayment	Deferred second loan	Deferred second loan
Max loan	$350,000	No ceiling	No ceiling
Income limit (King County)	≤$114,800	$180,000	Lower — varies by household size
Cash at closing	✅ $7,000 grant	✅ 4–5% of loan	✅ Up to $15,000
Repayment required	Never	Yes — at sale/refi	Yes — at sale/refi
Recapture tax risk	None	None	Yes (if 3 conditions met)
First-time required	No	No	Yes
Loan types	Conventional only	Conv, FHA, VA, USDA	Conv, FHA, VA, USDA
Who processes	Rocket Mortgage	WSHFC-approved lender	WSHFC-approved lender
Education required	No	Yes — 5-hour seminar	Yes — 5-hour seminar

For the buyer ONE+ fits — income under $114,800, purchase price under approximately $361,000, comfortable with conventional financing — it is the cleaner deal. No seminar, no deferred obligation, no future repayment to budget for at resale. For the buyer purchasing in the $700K–$1.5M range with household income between $115,000 and $180,000, Home Advantage is the realistic path. It doesn't give you a grant, but it gives you 4–5% of the loan in cash at closing with no monthly payment, and that's meaningful leverage in a market where down payment accumulation is the primary barrier.

What ONE+ Looks Like at the Closing Table

Item	Amount
Purchase price	$340,000 (example)
Buyer's 1% down	$3,400
Rocket's 2% grant	$6,800 — never repaid
Total down payment	$10,200 (3%)
Estimated closing costs	$6,500–$8,500 (varies by lender credits, title, county)
Buyer's estimated total cash to close	~$9,900–$11,900

The buyer brought $3,400 toward the down payment instead of $10,200. The $6,800 grant covered the rest — permanently. Closing costs exist regardless of which program you use, and the total cash-to-close in the example above reflects that reality. What ONE+ changes is the down payment portion of that figure, not the closing cost structure.

Does DPA Actually Work in Sammamish's Competitive Market?

Sammamish was firmly a seller's market through 2024, but the picture has shifted. As of late May 2026, roughly 228 homes were listed in Sammamish — representing over five months of supply. Homes are sitting for around 18 days on average, compared to 10 days the prior year. Prices have pulled back 5–13% year-over-year depending on the data source. This is a meaningfully more buyer-friendly environment than it was 24 months ago, and that shift matters for DPA users.

In a hot seller's market, DPA-assisted offers sometimes face resistance from listing agents who perceive them as slower or more conditional. In a market with five-plus months of inventory and sellers watching days-on-market tick up, sellers are far more receptive to offers that bring any qualified buyer to the table. Home Advantage is a well-understood program in King County, and WSHFC-approved lenders close these loans routinely. The friction is lower than many buyers assume.

The practical reality for Sammamish is that ONE+ serves a narrow slice of the market — primarily covenant-restricted resales and the occasional condo. Home Advantage is the workhorse program for buyers in the $700K–$1.5M range who have income up to $180,000. Buyers targeting the $1.5M–$1.7M median range should speak with a lender about whether the 4–5% DPA from Home Advantage materially changes their purchase timeline — at those price levels, the assistance is significant but the income qualification window narrows.

The ARCH East King County Down Payment Assistance Loan is technically available in Sammamish, but its $373,000 purchase price cap makes it inaccessible for standard single-family purchases in this market. It may apply in rare affordable resale scenarios but should not be treated as a mainstream option here.

Local Expert Takeaway: For most Sammamish buyers, WSHFC Home Advantage is the realistic primary path — the $180,000 income ceiling for King County captures a meaningful portion of buyers here, and the 4–5% deferred DPA provides genuine leverage in a market where entry-level single-family homes start well above $700,000. If your household income is under $114,800 and you're targeting a covenant-restricted affordable resale or condo under $361,000, run the ONE+ pre-approval first — it's a cleaner deal with no repayment tail. And whichever program you use, 2026's buyer-friendly inventory conditions mean your DPA-assisted offer is facing far less seller skepticism than it would have two years ago.

Quick Takeaways & FAQs

✅ ONE+ by Rocket Mortgage contributes a $7,000 grant — never repaid — but its $350,000 loan ceiling reaches only a narrow slice of Sammamish inventory, primarily covenant-restricted resales and condos.

⚠️ WSHFC Home Advantage serves most Sammamish buyers better on purchase price flexibility, with a $180,000 King County income ceiling and 4–5% deferred DPA — but it is a loan repaid at sale or refinance, not a grant.

📍 Sammamish's current buyer's market (5+ months of supply, prices off 5–13% year-over-year) means DPA-assisted offers face less resistance from sellers than in recent years — now is a practical time to use these programs.

Is there down payment assistance in Sammamish, Washington?

Yes. Sammamish buyers have access to multiple programs, including WSHFC Home Advantage, House Key Opportunity, HomeChoice, the Covenant Homeownership Program, and ONE+ by Rocket Mortgage. The most practical option for most buyers in this market is Home Advantage, given its $180,000 King County income ceiling and lack of purchase price restrictions. ONE+ is the strongest option structurally — a true grant rather than a deferred loan — but its $350,000 loan ceiling limits it to a narrow segment of Sammamish inventory.

What is the income limit for Washington Home Advantage?

For King County, the WSHFC Home Advantage income limit is $180,000 for all household sizes. This is one of the highest income ceilings of any state DPA program in the country, and it means dual-income households earning well above Washington's median qualify. The DPA comes as a 4–5% deferred second mortgage at 0% interest, with no monthly payments until the home is sold or refinanced.

What is the difference between ONE+ and WSHFC DPA?

The fundamental difference is grant versus loan. ONE+'s 2% contribution from Rocket Mortgage is a grant — it never needs to be repaid, carries no interest, and creates no future obligation. Every WSHFC program, including Home Advantage, provides a deferred second mortgage that must be repaid when you sell, refinance, or pay off the first loan. Both solve the cash-to-close problem. ONE+ eliminates the cost entirely on the grant portion; WSHFC defers it. For buyers ONE+ fits, it's the structurally superior deal. For buyers above the $350,000 loan ceiling, WSHFC programs are the practical path forward.

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