Crawl Space Repair in Seattle, Washington

Find trusted local contractors for crawl space encapsulation, waterproofing, mold removal, and more in Seattle. 15 local companies found.

Local Price Estimates — Seattle

Encapsulation$3,350$8,550
Repair$1,700$6,550
Waterproofing$1,650$5,250
Mold Removal$550$4,450
Inspection$150$450

* Estimates based on local market rates. Get free quotes for exact pricing.

Crawl Space Contractors in Seattle

Seattle Elite masonry and foundation repair

221 1st Ave W #200, Seattle, WA 98119

5.0

40 reviews

WaterproofingFoundation Repair

Expert Masonry and Foundation Repairs

221 1st Ave W, Seattle, WA 98119

5.0

63 reviews

WaterproofingFoundation RepairDrainage

KG Basement Waterproofing Seattle

800 S Weller St, Seattle, WA 98104

5.0

34 reviews

Waterproofing

Northwest Crawl Space Services

25422 74th Ave S, Kent, WA 98032

5.0

444 reviews

Insulation

Insulation Co

1420 E Pine St, Seattle, WA 98122

5.0

259 reviews

WaterproofingInsulationInspection

ACE CRAWLSPACE PRO LLC

12812 SE 272nd Pl #4, Kent, WA 98030

5.0

24 reviews

Insulation

Embassy Masonry And Foundation Repairs

1700 7th Ave, Seattle, WA 98101

5.0

61 reviews

WaterproofingFoundation Repair

Crawl Space & Drainage Systems LLC

19705 69th Pl W, Lynnwood, WA 98036

5.0

16 reviews

Drainage

Attic Crawl

2067 S 368th Pl, Federal Way, WA 98003

5.0

194 reviews

Insulation

Super Attic Solutions

11335 NE 122nd Way Suite 105, Kirkland, WA 98034

4.9

186 reviews

Insulation

Groundworks

18915 16th Ave S, SeaTac, WA 98188

4.8

691 reviews

WaterproofingFoundation Repair

Gravity Waterproofing and Drainage

13760 Aurora Ave N, Seattle, WA 98133

4.6

28 reviews

WaterproofingDrainage

Seattle foundation repair

12843 NE 14th Pl, Bellevue, WA 98005

4.6

34 reviews

Foundation Repair

Clean Crawls - Insulation Install & Removal

3707 124th St NE bldg a-1, Marysville, WA 98271

4.2

130 reviews

Insulation

Perma Dry Waterproofing & Drainage

608 SW 12th St, Renton, WA 98057

4.1

125 reviews

WaterproofingInsulationDrainage

FAQs — Crawl Space Services in Seattle

How much does crawl space repair cost in Seattle?

Crawl space repair in Seattle, Washington typically costs between $1,700 and $6,550, depending on the extent of damage and services required.

How much does crawl space encapsulation cost in Seattle?

Crawl space encapsulation in Seattle typically costs between $3,350 and $8,550. The price depends on the size of your crawl space and the materials used.

What crawl space services are available in Seattle?

Local contractors in Seattle offer encapsulation, repair, waterproofing, mold removal, insulation, cleaning, and inspection services. Use our directory to find and compare local professionals.

Crawl Space Concerns in Washington

The Pacific Northwest receives more sustained rainfall than almost any other US region. Without active drainage, water continuously migrates into crawl spaces through soil pressure alone. Drainage systems are not optional here — they are essential infrastructure.

!Annual rainfall of 35–60+ inches keeps soil perpetually saturated
!Hydrostatic pressure pushes groundwater into crawl spaces through floors and walls
!Moss, mildew, and wood rot are endemic due to constant dampness
!Many older homes have insufficient drainage systems for the rainfall volume
!Douglas fir framing (common in PNW) is particularly susceptible to moisture damage

Local Tip — Washington

In the PNW, a drainage system should be considered mandatory, not optional. French drains or interior perimeter drains with a sump pump are the standard approach. Pair with encapsulation for complete moisture control.

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Pro Tip

Prices vary by location, crawl space size, and severity. Always get 2–3 quotes before hiring.