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Seattle Basement Systems

Founded 1994 • With Angi since June 2014



We are an authorized Basement Systems dealer servicing the Greater Seattle area. Call for a FREE estimate....

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We specialize in crawl space and attic related services. Often times those areas of the home are neglected. We commonly find mold, rodent feces, drainage issues, infiltrated in insulation etc... Rats are a common occurrence in attics and crawlspaces and are often responsible for destroying furnace ducting, vapor barriers, insulation among other things. Crawl space Mold Treatment Crawl Space Inspection - FREE CleanUp Insulation Install/Removal Drainage & Sump Pumps Pest Control Rodent Exclusion Air & Duct Services Rat Slab Services Attic Attic Inspection - FREE CleanUp Insulation Install/Removal Mold Treatment Rodent Exclusion Air & Duct Services Pest Control  

We are not a big company that you have to go through all the phone calls. Owner Andy Zhang will be the one to answer the phone, provide you the bid, and supervise and inspect the work before finish. We are so confident in our work, quality, and over all experience that we don't need any money down. Our customers don't pay us anything until the work is done and customer is happy! For a house on the market, in most cases, we allow owner pay the full bill through escrow at closing. We pride ourselves in treating every customer with honestly.We looking forward to hear and serve you soon!  

Let us keep your home safe, dry and level. Trusted and referred by thousands of NW homeowners, TerraFirma Foundation Systems are the experts in Foundation repair, Basement and Crawlspace waterproofing, Concrete Leveling and Seismic Retrofitting. Our service area covers Seattle, Tacoma, Olympia, Vancouver, Portland, Hillsboro, Beaverton, Salem, Eugene, Roseburg, Medford, and Ashland, as well as their surrounding areas. For a permanent fix, call TerraFirma today.  

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Services Offered

basement waterproofing and crawl space repair

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