Concrete Patio Installation & Repair in Seattle
Concrete patios are the highest-leverage backyard investment in Seattle: a properly built patio adds measurable home value, lasts 30–50 years, and handles year-round Pacific Northwest weather better than wood, composite, or loose-set pavers. We install new patios, replace heaved or cracked ones, and level settled slabs across King, Snohomish, Pierce, and Thurston counties. Stamped, exposed-aggregate, broom, and integral-color finishes are all part of the scope; the right one depends on use, sun exposure, and how water moves off the surface.
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Patios for indoor-outdoor living
A well-designed patio extends your usable living space and adds measurable property value. We plan layout to connect naturally with interior floors, doors, and grade, and size the slab so furniture and traffic flow comfortably. Many Seattle homeowners pair a patio with a covered pergola or roof extension - we coordinate the slab edge and anchor bolt placement upfront so structural additions go in without retrofitting.
Patio repair, leveling & resurfacing
A patio that has cracked, sunk, or worn out doesn't always need to be torn out. Seattle patios tend to fail in four ways: cracks from settlement or freeze-thaw, a slab that has sunk or tilted toward the house, spalling and scaling where the sealer has failed, and standing water where the slope has been lost. Each has a different fix, and the fix only lasts if the cause is dealt with too. That usually means a downspout emptying beside the slab, soil washing out from under an edge, or tree roots lifting a corner.
- Crack repair: hairline and stable cracks can be cleaned out and sealed with a flexible filler, typically $5–$15 per linear foot. Cracks where one side sits higher than the other point to movement underneath and need leveling or section replacement instead.
- Patio leveling: a sunken slab that is still in one piece can be lifted back to grade by mudjacking ($3–$8 per sq ft) or polyurethane foam ($5–$12 per sq ft), which also restores the slope away from the house. Our patio leveling guide compares the two methods.
- Patio resurfacing: a structurally sound patio with spalling, stains, or a tired finish can take a bonded overlay, in a broom, stamped, or stained finish, for roughly $4–$9 per sq ft. See concrete resurfacing for patios, driveways, and steps for overlay options and when an overlay fails.
- Section replacement: broken or heaved panels can be saw-cut out and repoured for about $12–$22 per sq ft, though new concrete rarely matches the old color exactly.
Many patios need two of these at once, such as lifting a sunken section and then resurfacing the whole slab so it reads as one surface. Replacement makes more sense when cracks are wide and displaced, rebar is exposed and rusting, spalling covers most of the slab, or you want a different size, finish, or drainage layout. For a problem-by-problem diagnosis, read our Seattle concrete patio repair guide, then book a free on-site assessment so the repair matches the cause.
Patio installation process
We plan layout and elevation, prepare the base with compacted gravel, set forms, place rebar or mesh, and finish the surface with a minimum ¼-inch-per-foot slope for positive drainage. Most residential patios are poured and finished in one or two days; the slab needs 7–28 days to cure before full furniture loads or foot traffic.
Materials and finishes
We offer broom, exposed aggregate, integral color, and stamped finishes. In Seattle's wet climate, broom finish offers the best year-round traction. Stamped and stained patios look great but require a non-slip sealer applied every 2–3 years to stay safe when wet.
Typical patio projects
Common work includes new patio pours for backyard living areas, patio expansions, integrated walkway connections, step additions, and surface overlays on structurally sound slabs that need a cosmetic refresh. For warm-season design inspiration, see our roundup of summer concrete project ideas for Seattle yards.
Seattle patio design considerations
Seattle's rainfall means patio drainage is non-negotiable. We slope slabs away from the foundation and house walls, and can integrate channel drains at the perimeter when grade or fencing limits runoff direction. For hillside lots - common in neighborhoods like Capitol Hill, Ballard, and Beacon Hill - we account for retaining edges and lateral drainage in the design before the first shovel goes in. If your project includes a hot tub, outdoor kitchen, or fire pit, we size the slab thickness and reinforcement accordingly.
Patio cost in Seattle by finish type
| Finish | Installed cost (per sq ft) | Notes |
|---|---|---|
| Broom finish | $6–$10 | Best traction; most common residential choice |
| Exposed aggregate | $10–$16 | Textured; excellent in wet conditions |
| Integral color | $8–$14 | Color throughout slab; consistent as surface wears |
| Stamped concrete | $12–$20 | Mimics stone or tile; resealing every 2–3 years required |
Cost varies with slab area, base prep, access, and whether existing concrete is removed. We provide a firm estimate after an on-site visit.
Frequently asked questions
How much does a concrete patio cost in Seattle?
Pricing depends on square footage, finish, base prep, and access. Stamped or stained finishes cost more than a standard broom finish. We confirm with an on-site estimate.
How long does it take to install a concrete patio?
Most residential patios are installed over 2–4 working days, plus 7–28 days of curing depending on use and weather.
Do I need a permit for a backyard concrete patio in Seattle?
Most small ground-level residential patios on private property don't require a permit, but SDCI requires a grading permit at 750 sq ft or more of new or replaced paving, and covered patios, raised patios, or work near drainage may need review too. We confirm requirements before starting.
What's the best concrete patio finish for Seattle's wet climate?
Broom finish provides the best traction when wet. Stamped finishes can be slick — we recommend a non-slip sealer when stamped or stained finishes are used.
Can you resurface an existing concrete patio?
Yes, when the existing slab is structurally sound. We grind, repair, and apply an overlay or stain. If the slab is heaving or badly cracked, replacement is usually more cost-effective.
Can a sunken concrete patio be lifted instead of replaced?
Usually, if the slab is still in one piece. Mudjacking or polyurethane foam fills the void under the patio and raises it back to grade, restoring the slope away from the house. Fix the water source that washed out the soil, or the patio will settle again.
How much does concrete patio repair cost in Seattle?
Typical ranges: crack sealing $5–$15 per linear foot, slab lifting $3–$8 per sq ft for mudjacking or $5–$12 for foam, resurfacing $4–$9 per sq ft, and panel replacement $12–$22 per sq ft. Many patios need a combination, so get an on-site estimate.
When should a concrete patio be replaced instead of repaired?
Replace it when there are wide or displaced structural cracks, exposed rusting rebar, widespread spalling, or active soil failure underneath, or when you want to change the patio's size, finish or drainage layout.
Service areas
We handle patio pours and repairs across King, Snohomish, Pierce, and Thurston counties, including in Edmonds, Mercer Island, Bothell, University Place, and Lake Stevens. See all service areas.
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