West Seattle Concrete Contractor
West Seattle is Portal's home turf. Sloped lots, Craftsman-era foundations, and the long wet-dry cycle of our microclimate create concrete needs that are different from flatter parts of the city. Most of our work is within a 10-minute drive of the Junction, so we know the soils, the drainage, and the permit nuances here better than anyone.
What we do in West Seattle
- Driveway replacements on sloped lots — common in Admiral and North Admiral
- Retaining walls for view properties along the ridge
- Foundation repair and crack sealing on pre-1950 homes in Genesee, Gatewood, and Highland Park
- Stamped concrete patios with covered structures (rain-friendly outdoor living)
- Front-walk and entry-stair replacements on Craftsman homes
West Seattle's wet winters and the salt air off Puget Sound accelerate surface wear on older concrete. We use polymer-modified Ardex patching and color-stain sealers that hold up to the freeze-thaw cycles you see in Hillcrest, Gatewood, and along the ridge.
Services available in West Seattle
Driveways
New pours, replacements, extensions, and repairs.
Patios
Backyard patios and outdoor living spaces.
Walkways & Stairs
Front walks, garden paths, steps, and stoops.
Retaining Walls
Structural walls for hillsides and yard leveling.
Foundations
Repairs, ADU foundations, and garage slabs.
Repair & Reconditioning
Restore worn concrete without full replacement.
FAQs from West Seattle homeowners
Do you handle the steep driveways that are common in West Seattle?
Yes. Sloped driveways are most of what we pour west of the bridge. We grade, set proper drainage for the rain, and use brush or broom finishes that stay grippy in wet weather. We've poured driveways on slopes from 5% to 18% across Admiral, North Admiral, Genesee, and Gatewood.
Can you do retaining walls on a hillside lot?
Yes. Most ridge-line and view-lot homes need at least one retaining wall. We handle structural concrete walls up to height limits that don't require an engineering stamp. Above 4 feet usually does need engineering, and we coordinate with structural engineers we've worked with in West Seattle before.
How long does a driveway replacement take in West Seattle?
Most residential driveway projects are 3 to 5 working days on site. Demo of the old slab takes a day, base prep and forms another day, pour in a half-day if weather cooperates, and then 24 hours before you can walk on it and 7 days before vehicles. We work year-round, including through Seattle's wet season.
Do you need a permit for concrete work in West Seattle?
Most residential driveway, patio, and walkway work in Seattle does not require a permit. Retaining walls over 4 feet usually do. Foundation repair scope varies. We'll tell you up front during the estimate whether your project needs SDCI involvement and coordinate the paperwork.
We also serve nearby neighborhoods
Portal works across Seattle. Here are the neighborhoods adjacent to West Seattle.