Concrete Patio costs $8.95 to $20.45 per sq ft in Seattle in 2026. For a 400 sq ft project, expect $3,580 – $8,180 installed, typically near $5,880. That is about 18% above the Washington state average.
Seattle concrete patio calculator
Planning estimate only. State pricing applies a construction wage index to the labor share; materials are held at national prices. Get three written quotes before committing.
Why Seattle costs more than the rest of Washington
Seattle carries roughly a 18% premium over the Washington statewide figure. Three things drive that gap. Metro wages run above the state average, and labor is about 52% of this bill. Permitting and inspection are slower and more expensive inside city limits. And site access is tighter, which means smaller equipment, more hand work, and sometimes street permits for deliveries.
Statewide, Washington averages $7.58 to $17.33 per sq ft, against $8.95 to $20.45 inside Seattle. Suburbs on the metro fringe usually fall between the two.
Concrete Patio cost by project size in Seattle
| Project size | Seattle range | Typical |
|---|---|---|
| 10×10 (100 sq ft) | $895 – $2,046 | $1,471 |
| 12×12 (144 sq ft) | $1,289 – $2,947 | $2,118 |
| 12×16 (192 sq ft) | $1,719 – $3,929 | $2,824 |
| 16×20 (320 sq ft) | $2,864 – $6,548 | $4,706 |
| 20×20 (400 sq ft) | $3,581 – $8,185 | $5,884 |
| 24×24 (576 sq ft) | $5,156 – $11,787 | $8,472 |
| 30×40 (1,200 sq ft) | $10,744 – $24,556 | $17,650 |
Where the money actually goes
For a 400 sq ft project in Seattle at roughly $5,880, a typical bill splits like this:
| Line item | Share | Cost |
|---|---|---|
| Labor | 52% | $3,058 |
| Materials | 36% | $2,117 |
| Site prep & equipment | 7% | $424 |
| Overhead, disposal & finishing | 5% | $282 |
The labor share is why identical projects diverge so sharply between states. It is also why a bid that comes in far below these numbers usually means a thinner specification or a crew cutting preparation, not a genuine bargain.
Seattle compared with other Washington markets
| Area | Cost per sq ft | vs Seattle |
|---|---|---|
| Spokane | $7.81 – $17.85 | −13% |
| Tacoma | $8.26 – $18.89 | −8% |
| Washington average | $7.58 – $17.33 | −15% |
Frost depth and code requirements in Seattle
Permits in Seattle
A residential permit for this work typically runs around $700 in Washington, and metro jurisdictions like Seattle usually sit at the upper end of that range with longer review times. Permit cost is rarely included in a contractor quote, so add it separately. Confirm scope with the Seattle building department before work begins.
Hiring in Seattle
Get three written, itemised quotes from licensed and insured contractors, and make sure each specifies the same scope and the same grade of material. In a metro market, the cheapest bid often reflects a thinner specification or a crew travelling in from outside the area rather than a genuine saving. Ask for local references and check that the licence is current in Washington.
Frequently asked questions
How much does concrete patio cost in Seattle?
In 2026, concrete patio costs $8.95 to $20.45 per sq ft in Seattle. For a 400 sq ft project, the installed total typically lands between $3,580 and $8,180.
Is Seattle more expensive than the rest of Washington?
Yes. Seattle runs about 18% above the Washington statewide average, driven by metro wage levels, permitting, and tighter site access.
Do I need a permit in Seattle?
Most work of this type and value requires a permit. Budget around $700 and allow extra time for review, since metro jurisdictions are typically slower than rural ones.
How do I compare quotes in Seattle?
Insist on three written, itemised quotes covering identical scope, materials, and preparation. A bid far below the others usually signals a reduced specification rather than better value.
Nearby markets
Open the full patio cost calculator →