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Foundation Repair & Waterproofing in Seattle, WA

Compare 6 local foundation repair & waterproofing pros. Typical service: $3120–$11486.

Top Foundation Repair & Waterproofing Companies in Seattle

  1. 1.Expert Masonry and Foundation Repairs

    4.9★ (72 reviews)

    4.9★ from 72 reviews

  2. 2.Embassy Masonry And Foundation Repairs

    4.9★ (62 reviews)

    4.9★ from 62 reviews

  3. 3.Seattle Elite masonry and foundation repair

    5.0★ (40 reviews)

    5.0★ from 40 reviews

  4. 4.KG Basement Waterproofing Seattle

    5.0★ (34 reviews)

    5.0★ from 34 reviews

  5. 5.Jet City Foundation & Construction LLC

    4.9★ (33 reviews)

    4.9★ from 33 reviews

  6. 6.Seattle Waterproofing and Masonry

    5.0★ (1 reviews)

    5.0★ from 1 reviews

Foundation Repair & Waterproofing Cost in Seattle

Local ranges, adjusted for area wage and cost-of-living data.

ServiceTypical range in Seattle
Foundation repair$3,120–$11,486/job
Foundation pier, installed$1,418–$4,254/pier
Pier and beam repair$4,254–$13,471/job

Foundation Repair & Waterproofing prices in Seattle run about 42% above the national average, based on what this trade earns in the metro area — so neighbouring cities in the same metro see similar rates.

Quotes on this page come from 6 companies serving Seattle, rated 5.0★ on average across 242 customer reviews.

Seattle Climate & Seasonal Timing

What Seattle's weather means for scheduling foundation repair & waterproofing.

Last spring frost
March 5
First fall frost
November 24
Annual precipitation
37.72"
Heating degree days
4,370
Cooling degree days
188
MonthLowHighPrecip
Jan37.3°48.6°5.47"
Feb37.1°51.4°3.52"
Mar39.7°55.4°3.85"
Apr42.9°59.9°2.79"
May48.8°65.8°2.01"
Jun53.3°70.7°1.57"
Jul56.5°75.8°0.85"
Aug57°76.2°0.94"
Sep53.1°70.8°1.3"
Oct46.8°60.7°3.38"
Nov40.6°52.4°5.98"
Dec36°46.9°6.06"

NOAA station data 3.2 miles from Seattle.

Permits & Regulations in WA

  • Washington requires Labor and Industries contractor registration for construction and repair work, with no dollar-based handyman exemption
  • Specialty contractor registration requires a $6,000 surety bond and liability insurance
  • Electrical, plumbing and HVAC work always needs the appropriately licensed trade, whatever the job size

License required: Washington L&I contractor registration (no handyman exemption)

Sources: lni.wa.gov

Foundation Repair & Waterproofing FAQs for Seattle

How much does foundation repair cost in Seattle?

Foundation repair in Seattle typically runs $3120-$11486; jobs needing many piers cost more.

How many foundation repair companies serve Seattle?

We track 6 foundation repair companies serving Seattle.

Is foundation repair in Seattle more expensive than average?

Concrete and foundation labor in Seattle runs about +41.8% versus the national average.

Does foundation repair need a permit in Seattle, WA?

In WA, Washington requires Labor and Industries contractor registration for construction and repair work, with no dollar-based handyman exemption. Structural foundation work in Seattle generally needs a building permit, and many jobs call for an engineers report.

Does rainfall affect foundations in Seattle?

Soil that swings between wet and dry moves foundations; Seattle gets about 37.72 inches of rain a year, so gutters and grading that keep water away are the first fix.

Do hot summers cause foundation problems in Seattle?

Long dry spells with highs near 76F shrink clay soils under Seattle homes, which is when new cracks tend to show.

How many quotes should I get for foundation repair in Seattle?

At least three; with 6 foundation companies serving Seattle, compare the number and type of piers each proposes and the warranty.

What are the signs I need foundation repair in Seattle?

Sticking doors, stair-step cracks in brick and sloping floors are the usual signs; a Seattle inspection is often free before a $3120-$11486 repair.