You've probably been priced out of Seattle proper, and someone mentioned SeaTac. Or you work at the airport and want to live close without paying Bellevue prices. Either way, you'll find a number that surprises you in both directions: SeaTac's median home price sits noticeably below Seattle's but still runs well above the national average, and the overall cost of living lands about 22% above the U.S. norm. The city's position — straddling King County's southern corridor, tucked between I-5 and SR-99 with a direct light rail line to downtown Seattle — means you're paying for genuine access without the full Seattle premium.
What drives the cost here isn't square footage — it's proximity. The airport anchors the local rental market, and that steady demand base keeps vacancy low regardless of broader economic conditions. Median household income in SeaTac runs approximately $81,104, which means many working households are stretched — not crushed — by local prices, but the margin isn't wide.
The two things most relocators don't expect: electricity bills that come in meaningfully lower than what you paid in most other states, because Puget Sound Energy draws heavily from Washington's hydropower grid; and a sales tax of 10.4% in 2026 that will make your first major purchase feel genuinely jarring. Washington has no state income tax, which matters enormously if you're moving from California, Oregon, or any other income-tax state. That single structural difference reframes the whole cost comparison for many buyers.
Whether you're weighing a purchase against renting, trying to figure out whether SeaTac makes sense compared to Burien or Des Moines, or just building a realistic monthly budget before you sign anything, the sections below break down SeaTac's housing market, everyday costs, a side-by-side comparison with nearby cities, and the full tax picture.
What It Really Costs to Live in SeaTac
The Zillow Home Value Index places SeaTac's typical home value at $524,875 as of 2026. That figure sits noticeably below Seattle's median but is still well above what you'd pay in most mid-sized American cities — and well above what the median SeaTac household income can comfortably carry without a substantial down payment.
Overall, SeaTac runs about 22% above the national cost-of-living average and roughly 7% above the average Washington city, according to ERI Economic Research Institute data from early 2026. Housing is the single biggest driver, but groceries and transportation also come in above the U.S. baseline. What offsets some of that: electricity rates in King County run about 28% below the national average, and Washington's no-income-tax structure hands back real money to anyone earning wages.
The honest read: SeaTac is not cheap, but it is meaningfully more accessible than the cities directly north of it. If you're relocating from the Midwest or the South, the sticker shock is real. If you're relocating from Seattle, Bellevue, or Redmond, SeaTac will feel like breathing room — especially on rent.
Housing: Rent vs Buy in SeaTac
The Buying Side
At a $524,875 typical home value (Zillow Home Value Index, 2026), SeaTac is an entry point into King County ownership — not a bargain, but genuinely more accessible than Seattle or Burien in many pockets. Entry-level homes, typically older single-family construction or townhomes, start below that figure; the median pulls the number up as you move toward newer builds and larger lots. For neighborhood-by-neighborhood price variation, the Best Neighborhoods guide breaks that down specifically.
The effective property tax rate in SeaTac runs approximately 0.82% — below the national average and notably below what buyers in many other states carry. On a home near the city-wide median, that rate is the number to plug into your annual carrying-cost math. Use the mortgage calculator below for a full monthly estimate; this page won't quote a payment total because the right number depends on your down payment, rate, and loan term.
The Renting Side
The median asking rent in SeaTac was approximately $1,860/month as of August 2025, according to Redfin rental market data. That figure reflects real demand — the airport corridor doesn't empty out during economic slowdowns, and that steady base keeps vacancy low and landlords from needing to discount. For someone earning the city's median household income, that rent-to-income ratio is tight but not impossible if other costs are managed carefully.
Renting makes more sense here than buying if you're planning to stay fewer than three to four years, or if you want time to understand which part of the city fits your actual daily routine before committing. The gap between renting and owning in SeaTac is narrower than in Seattle proper, but it's still a meaningful gap — and the 0.82% property tax rate makes ownership more forgiving on an annual basis than it would be in a higher-tax county.
Everyday Costs Beyond Housing in SeaTac
SeaTac is served by Puget Sound Energy rather than Seattle City Light, and the regional electricity rate of approximately 15¢/kWh — drawn largely from Washington's hydropower infrastructure — is a genuine budget advantage. Most households here spend less on electricity than they did in their previous state. Groceries are a different story: Seattle-metro food costs run roughly 10–11% above the national average, which you'll feel at the checkout line even though Washington exempts most groceries from sales tax.
Transportation costs vary sharply based on how you get around. The 1 Line light rail stops directly at SeaTac/Airport Station, and a one-way adult fare to downtown Seattle (Westlake) runs $3.00 — making a daily round-trip commute by rail cost about $6, or roughly $130/month for a full workweek schedule. That's a meaningful saving over downtown parking alone. Drivers commuting north on I-5 toward Seattle will spend more on gas and face real variability in travel time; for commute-pattern details, see the SeaTac overview page.
| Category | Typical Monthly Cost | Notes |
|---|---|---|
| Housing (2BR Rent) | $1,750–$1,950 | Based on ~$1,860 median asking rent (Redfin, Aug 2025). Owners: use the mortgage calculator above for a purchase estimate. |
| Electricity & Gas | $90–$140 | Puget Sound Energy serves SeaTac; King County electricity runs ~15¢/kWh, well below national average. |
| Water, Sewer & Trash | $80–$120 | Seattle-metro proxies; varies by household size and property type. |
| Groceries | $400–$600 | Seattle metro runs ~10–11% above U.S. average. Most groceries are sales-tax exempt in Washington. |
| Transportation & Gas | $100–$250 | Light rail to Seattle: ~$3.00/trip one-way. Car commuters add gas and potential tolls on SR-99/I-5. |
| Phone & Internet | $80–$160 | Competitive provider market in King County; fiber options available in most of SeaTac. |
| Misc / Discretionary | $200–$400 | Dining along International Blvd and Military Road, the World Table District corridor, or weekend trips toward the Sound. |
These figures are estimates for a typical two-person household and will vary based on lifestyle, commute mode, and housing type. Use them as a planning floor, not a ceiling.
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SeaTac vs Nearby Cities: Cost Comparison
| City | Median Home Price | Typical 2BR Rent | Cost vs SeaTac |
|---|---|---|---|
| SeaTac | $524,875 (Zillow ZHVI, 2026) | ~$1,860/mo (Redfin, Aug 2025) | — baseline — |
| Burien | ~$540,000–$560,000 | ~$1,800–$1,950/mo | About the same; slightly higher on purchase |
| Tukwila | ~$480,000–$510,000 | ~$1,700–$1,850/mo | Noticeably cheaper on both sides |
| Des Moines | ~$530,000–$555,000 | ~$1,750–$1,900/mo | Roughly equivalent; Des Moines slightly higher on rent |
| Kent | ~$530,000–$560,000 | ~$1,650–$1,800/mo | Similar purchase price; rent runs a bit lower |
| Normandy Park | ~$700,000–$800,000 | ~$2,100–$2,400/mo | Significantly more expensive across the board |
* Nearby-city figures are approximate ranges based on current market data; SeaTac figure is Zillow Home Value Index (ZHVI), 2026. ZHVI = Zillow Home Value Index.
Tukwila is the clearest lower-cost alternative if you need to stay near the airport corridor. Normandy Park sits in a noticeably different price bracket despite being a short drive south — the waterfront access and quieter character command a real premium.
Taxes & the Bottom Line for SeaTac
Income Tax: The Structural Advantage
Washington has no state personal income tax. For someone moving from California, Oregon, or any income-tax state, this is not a small detail — it can represent thousands of dollars annually that stay in your household budget. SeaTac residents pay zero state income tax on wages, salaries, or retirement distributions at the state level.
Sales Tax: Where You'll Feel It
The 2026 combined sales tax rate in SeaTac is 10.4% — one of the higher rates in the region, reflecting the base Washington state rate of 6.5% plus King County and local components. Most groceries are exempt under Washington law, which softens the impact for everyday household shopping, but durable goods, electronics, clothing, and restaurant meals all carry the full rate. The first time you buy furniture or a car in SeaTac, the tax line will get your attention.
Property Tax: Below the National Norm
At an effective rate of approximately 0.82%, SeaTac's property tax burden is lower than the U.S. average and well below what buyers in states like New Jersey, Illinois, or Texas carry. That rate applies to the assessed value of your home and helps make the ownership math more manageable on an ongoing basis — especially given where home prices have landed relative to local incomes.
Running the Full Budget
SeaTac works best financially for households with two incomes, residents who can use the 1 Line light rail to Seattle for $3.00 a trip and reduce car dependency, and buyers relocating from a high-income-tax state who are positioned to leverage Washington's structural tax advantage. Renters earning around the city median will find the budget tight but functional if transportation costs stay low.
The city tends to stretch thinner for single-income households targeting homeownership at the current price level, or for anyone expecting a cost structure closer to the national average. The no-income-tax advantage is real, but it doesn't fully offset housing costs that remain well above what the same dollar buys in most of the country. Know the full picture before you make the move.
Local Expert Takeaway: SeaTac's cost of living is genuinely manageable for households who ride the 1 Line light rail to Seattle for $3.00 a trip and skip car payments entirely. The electricity bill will be lower than you expect — Puget Sound Energy's hydropower-heavy grid keeps King County rates about 28% below the national average — but the 10.4% sales tax will sting on every major purchase. The no-income-tax structure is the biggest financial variable for anyone moving from California or Oregon: run that number honestly against the home price before you compare SeaTac to anywhere else.
Quick Takeaways & FAQs
✅ Washington's zero state income tax hands back real money — potentially thousands annually — to anyone relocating from a high-income-tax state like California or Oregon.
⚠️ SeaTac's 10.4% combined sales tax in 2026 is among the higher rates in the region and will noticeably affect large purchases like furniture, electronics, and vehicles.
📍 The 1 Line light rail stops directly at SeaTac/Airport Station with a $3.00 adult fare to downtown Seattle (Westlake), making car-free commuting a genuinely viable daily strategy.
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