Crawl Space Repair in SeaTac, Washington

Find trusted local contractors for crawl space encapsulation, waterproofing, mold removal, and more in SeaTac. 29 local companies found.

Local Price Estimates — SeaTac

Encapsulation$2,700$7,500
Repair$1,450$5,750
Waterproofing$1,500$4,950
Mold Removal$500$3,750
Inspection$150$400

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

Crawl Space Contractors in SeaTac

Northwest Crawl Space Services

25422 74th Ave S, Kent, WA 98032, USA

5.0

450 reviews

Crawl Space Repair

ACE CRAWLSPACE PRO LLC

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

5.0

24 reviews

Crawl Space Repair

Attic Crawl

2067 S 368th Pl, Federal Way, WA 98003, USA

5.0

196 reviews

Crawl Space Repair

Expert Masonry and Foundation Repairs

221 1st Ave W, Seattle, WA 98119, USA

5.0

64 reviews

Foundation Repair

Embassy Masonry And Foundation Repairs

1700 7th Ave, Seattle, WA 98101, USA

5.0

61 reviews

Foundation Repair

City Basement Waterproofing & Foundation

2000 Benson Rd S, Renton, WA 98055, USA

5.0

6 reviews

WaterproofingFoundation RepairDrainage

Total Restore

801 SW 16th St Office #A04, Renton, WA 98057, USA

5.0

163 reviews

Crawl Space Repair

Eco Water Restoration

1321 Central Ave S D, Kent, WA 98032, USA

5.0

143 reviews

Crawl Space Repair

Seattle Mold And Restoration Service

5001 Rainier Ave S, Seattle, WA 98118, USA

5.0

30 reviews

Mold Removal

Seattle Mold Experts

300 Lenora St, Seattle, WA 98121, USA

5.0

34 reviews

Mold Removal

Robinson Restoration - Seattle

21120 77th Ave S, Kent, WA 98032, USA

4.9

276 reviews

Crawl Space Repair

Attic Crew

707 S Grady Way Suite 600, Renton, WA 98057, USA

4.9

350 reviews

Crawl Space Repair

INSULATION PRO INC

555 Andover Park W #200, Tukwila, WA 98188, USA

4.9

41 reviews

Insulation

The Flood Guys - Water, Fire, Mold & Storm

20129 72nd Ave S, Kent, WA 98032, USA

4.9

190 reviews

Mold Removal

Northwest Crawl Space Services

10710 NE 28th St, Bellevue, WA 98004, USA

4.9

39 reviews

Crawl Space Repair

Seattle Mold Solutions

4616 25th Ave NE Ste 79, Seattle, WA 98105, USA

4.9

32 reviews

Mold Removal

Quick Dry Restoration SeaTac

18858 72nd Ave S, Kent, WA 98032, USA

4.9

1317 reviews

Crawl Space Repair

Attic Projects

6839 S 220th St, Kent, WA 98032, USA

4.9

776 reviews

Crawl Space Repair

All Seattle Masonry and Foundation Repair

4500 9th Ave NE Suite 300, Seattle, WA 98105, USA

4.8

41 reviews

Foundation Repair

Green Planet Restoration Of Seattle

960 Industry Dr, Tukwila, WA 98188, USA

4.8

29 reviews

Crawl Space Repair

Groundworks

18915 16th Ave S, SeaTac, WA 98188, USA

4.8

698 reviews

Crawl Space Repair

Seattle foundation repair

12843 NE 14th Pl, Bellevue, WA 98005, USA

4.6

34 reviews

Foundation Repair

3 Guys Construction

13629 1st Ave S, Burien, WA 98168, USA

4.5

17 reviews

Crawl Space Repair

Robbins & Co

1228 S 140th St, Burien, WA 98168, USA

4.5

68 reviews

Crawl Space Repair

Perma Dry Waterproofing & Drainage

608 SW 12th St, Renton, WA 98057, USA

4.1

125 reviews

WaterproofingDrainage

Queen City Basement & Foundation Repairs

10900 NE 4th St Unit 2300, Bellevue, WA 98004, USA

4.1

9 reviews

Foundation RepairDrainage

Seattle Foundation Repair

1546 NW 56th St Unit 526, Seattle, WA 98107, USA

4.1

88 reviews

Foundation Repair

Matvey Foundation Repair

421 SW 152nd St, Burien, WA 98166, USA

0.0

0 reviews

Foundation Repair

Crawl Space Services

608 SW 12th St, Renton, WA 98057, USA

0.0

0 reviews

Crawl Space Repair

FAQs — Crawl Space Services in SeaTac

How much does crawl space repair cost in SeaTac?

Crawl space repair in SeaTac, Washington typically costs between $1,450 and $5,750, depending on the extent of damage and services required.

How much does crawl space encapsulation cost in SeaTac?

Crawl space encapsulation in SeaTac typically costs between $2,700 and $7,500. The price depends on the size of your crawl space and the materials used.

What crawl space services are available in SeaTac?

Local contractors in SeaTac 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.