The Real Cost of a Vacant Seattle Home — 2026 Breakdown

The Washington real estate excise tax (REET, RCW 82.45) is the largest seller-paid transfer tax of any market we serve: 1.10% on the first $525,000, 1.28% on $525,001–$1,525,000, 2.75% on $1,525,001–$3,025,000. On a $750,000 Seattle home, REET = $8,655 — before commission, repairs, or closing costs. King County property taxes run approximately 0.9% to 1.1% of assessed value (approximately $6,300–$7,700/year on a $700,000 home). Washington’s 7% capital gains excise tax (CGET, RCW 82.87) applies to investment property gains above $250,000/year. Seattle’s earthquake risk creates insurance complexity. Pacific Northwest rain requires active moisture management in vacant homes.

What Makes Seattle Holding Costs Unique

The REET bracket effect — every month of holding moves you up the tax scale. Washington’s REET is graduated by sale price bracket. A Seattle home priced at $510,000 today pays 1.10% REET. If the home appreciates to $540,000, it crosses the $525,000 threshold and pays 1.10% on $525,000 + 1.28% on $15,000 — incrementally more. At Seattle’s historical appreciation rate (3%–7% annually), a home near a REET bracket threshold crosses into a higher rate within months of delayed selling. The financial case for selling sooner rather than later is directly visible in the REET calculation.

King County property taxes: higher than most markets. King County combines state, county, city, and school district levies. For most King County residential properties, the effective rate is approximately 0.90% to 1.10% of assessed value.

• For a $700,000 King County home: $6,300 to $7,700/year ($525 to $642/month)
• For a $1,200,000 Bellevue home: $10,800 to $13,200/year ($900 to $1,100/month)

Seattle’s rapidly rising assessed values (King County reassesses annually) mean tax bills track closely with market appreciation — reducing the effective “inflation hedge” benefit of holding.

Washington CGET — capital gains accumulate every month held. For Seattle rental and investment property, the 7% CGET on gains above $250,000/year means each month of additional appreciation contributes to a higher eventual CGET bill. Selling sooner after acquiring an investment property (before total cumulative gain exceeds $250,000) avoids CGET entirely.

Earthquake risk and insurance complexity. Seattle sits above the Seattle Fault and within range of the Cascadia Subduction Zone (a magnitude 8.0–9.0 megathrust earthquake is a significant long-term risk). Vacant home insurance policies may require earthquake endorsements in the Pacific Northwest. Standard homeowner policies exclude earthquake damage — earthquake insurance in Washington runs $1,500 to $4,000/year for a typical Seattle home. Pre-1940 unreinforced masonry (URM) buildings in Seattle’s older neighborhoods (Pioneer Square, Capitol Hill) face mandatory seismic retrofit legislation, adding $50,000 to $200,000 in potential future costs.

Pacific Northwest moisture. Seattle receives approximately 38 inches of rain annually. A vacant home requires active moisture management:

• Dehumidifiers running continuously in basement/crawlspace: $40–$80/month in electricity
• Gutters must be cleaned monthly in fall (leaf blockage causes overflow and foundation penetration)
• Moss accumulation on roofs in wet climates deteriorates shingles: professional treatment $200–$500/year
• Mold develops in poorly ventilated vacant spaces within 2 to 3 months

Month-by-Month Cost: $750,000 Seattle Home Without a Mortgage

Expense	Annual	Monthly
King County property taxes	$7,500	$625
Vacant home/earthquake insurance	$3,600	$300
Moisture management (dehumidifiers, gutters)	$960	$80
HOA dues (if applicable, Seattle condo)	$3,600–$9,600	$300–$800
Maintenance reserve	$1,800	$150
Total (without HOA)	$13,860	$1,155
Total (with HOA at $400/mo)	$18,660	$1,555

With a mortgage ($500,000 at 7.5% for 30 years): Add approximately $3,496/month. Total monthly carrying cost with HOA and mortgage: approximately $5,051.

The REET Cost at Each Price Point

Sale Price	REET Calculation	REET Amount	Commission (5.5%)	Total Transaction Costs
$600,000	1.10% × $525K + 1.28% × $75K	$6,735	$33,000	$39,735
$750,000	1.10% × $525K + 1.28% × $225K	$8,655	$41,250	$49,905
$1,000,000	1.10% × $525K + 1.28% × $475K	$11,840	$55,000	$66,840
$1,500,000	1.10% × $525K + 1.28% × $975K	$18,225	$82,500	$100,725

Cash sale savings: Eliminating the 5.5% commission ($41,250 on a $750,000 home) while paying only REET ($8,655) and minimal closing costs makes the net-to-seller from a cash sale highly competitive against the traditional listing path — especially for Seattle sellers with deferred maintenance who face $15,000 to $40,000 in repairs before listing.

Seattle “Leaky Condo” Holding Costs

Seattle has thousands of pre-2000 condominiums with water intrusion problems from improperly constructed exterior envelopes. For an inherited or investment condo in a leaky building:

• Special assessments: $20,000 to $100,000+ per unit
• Monthly HOA fees often elevated due to reserve fund rebuilding
• Reduced buyer pool (FHA/VA financing unavailable in buildings with pending litigation or special assessments)
• Unit sells at 20%–40% discount to comparable unaffected buildings

Holding a leaky condo longer does not improve its competitive position — the special assessment clock keeps running. Selling as-is to a cash buyer with experience in leaky condo transactions is often the fastest path to exit.

Find out what your Seattle home is worth in cash →

For the full overview of Seattle fast-sale options, see: Sell My House Fast Seattle WA: Every Real Option in 2026