Crawl Space Repair in Mercer Island, Washington
Reviewed by Michael Peterson· Licensed Home Inspector
19 crawl space companies serve Mercer Island, Washington, together holding 1,865 customer reviews. Northwest Crawl Space Services is the highest-rated at 5.0★ (451 reviews). Local crawl space repair typically runs $1,500–$6,000, and full encapsulation $3,000–$8,000. The most common services offered here are crawl space repair, foundation repair, mold removal.
Find trusted local contractors for crawl space encapsulation in Mercer Island, waterproofing in Mercer Island, mold removal in Mercer Island, and more in Mercer Island.
Local Price Estimates — Mercer Island
* Estimates based on local market rates. Get free quotes for exact pricing. See the full repair cost guide, encapsulation cost guide, or cost calculator.
Crawl Space Contractors in Mercer Island
2000 124th Ave NE Suite B100, Unit 102, Bellevue, WA 98005, USA
8 reviews
1997 Bellevue Way SE, Bellevue, WA 98004, USA
165 reviews
25422 74th Ave S, Kent, WA 98032, USA
451 reviews
221 1st Ave W, Seattle, WA 98119, USA
64 reviews
1700 7th Ave, Seattle, WA 98101, USA
60 reviews
221 1st Ave W #200, Seattle, WA 98119, USA
40 reviews
13555 SE 36th St, Bellevue, WA 98006, USA
49 reviews
801 SW 16th St Office #A04, Renton, WA 98057, USA
163 reviews
1100 112th Ave NE, Bellevue, WA 98004, USA
51 reviews
12812 SE 272nd Pl #4, Kent, WA 98030, USA
26 reviews
1824 NE 20th St, Renton, WA 98056, USA
106 reviews
10710 NE 28th St, Bellevue, WA 98004, USA
39 reviews
20129 72nd Ave S, Kent, WA 98032, USA
190 reviews
10333 NE 1st St #154, Bellevue, WA 98004, USA
210 reviews
2811 75th Pl SE, Mercer Island, WA 98040, USA
61 reviews
960 Industry Dr, Tukwila, WA 98188, USA
29 reviews
12843 NE 14th Pl, Bellevue, WA 98005, USA
34 reviews
10900 NE 4th St Unit 2300, Bellevue, WA 98004, USA
9 reviews
FAQs — Crawl Space Services in Mercer Island
How much does crawl space repair cost in Mercer Island?
Crawl space repair in Mercer Island, Washington typically costs between $1,500 and $6,000, depending on the extent of damage and services required. With 19 local companies to compare, getting 2–3 quotes usually saves 15–30%.
How much does crawl space encapsulation cost in Mercer Island?
Crawl space encapsulation in Mercer Island typically costs between $3,000 and $8,000. The price depends on the size of your crawl space and the materials used.
Who is the top-rated crawl space company in Mercer Island?
Northwest Crawl Space Services is the highest-rated crawl space contractor in Mercer Island with a 5.0★ rating from 451 reviews. City Construction Solution (5.0★, 165 reviews) is also highly rated. Ratings shown are from public customer reviews.
How many crawl space contractors serve Mercer Island?
19 crawl space companies are listed for Mercer Island. The average local rating is 4.9★ across 1,865 reviews. Contractors in nearby Seattle and Bremerton also serve the area.
What crawl space services are available in Mercer Island?
Mercer Island contractors most commonly offer crawl space repair, foundation repair, mold removal, alongside repair, insulation, cleaning, and inspection. Compare providers above to see who offers what.
What should Mercer Island homeowners know before hiring a crawl space contractor?
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. Always verify licensing and insurance, and get itemized quotes from at least two Mercer Island-area companies before signing.
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.
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.
Recommended services for Mercer Island:
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Pro Tip
Prices vary by location, crawl space size, and severity. Always get 2–3 quotes before hiring.