The 9 Best Waterproofing Contractors in Tacoma, WA
Tacoma's unique climate and soil conditions make waterproofing essential. Our rankings highlight the most trusted local contractors.
MHMaya Hendricks · Home Services Editor Updated June 13, 2026 · Next review July 2026
Editorially independent9 companies evaluated
cover story
★ Editor's ChoiceTerraFirma
96Score
Latest update · June 13, 2026: Initial ranking published. 9 Tacoma-metro waterproofing businesses evaluated, top 9 ranked by Vetted Score.
Waterproofing is crucial in Tacoma, where the region's wet climate can lead to significant moisture issues in homes. The local market is competitive but still developing, with many businesses having fewer than 50 reviews. This means that while some providers show promise, trust is still forming among homeowners.
We evaluated nine waterproofing contractors in the Tacoma area based on their customer ratings and review counts. Our list reflects a mix of established players and newer entrants, ensuring you have options that fit your needs and budget.
9waterproofing contractors evaluated in Tacoma
4.67average rating across the field
639customer reviews analyzed
Cityvetted analysis of public Google review data, updated June 13, 2026.
To build this ranking, we assessed each contractor's online presence, focusing on their Vetted Scores, customer ratings, and the volume of reviews. No business pays for placement in our rankings; this ensures a fair representation based solely on performance.
Our rankings are refreshed monthly to reflect the latest customer feedback and experiences. This approach guarantees that our recommendations are up-to-date, helping you make informed decisions when selecting a waterproofing contractor.
The Vetted Score: six weighted factors
Customer sentiment25%
Rating quality20%
Review volume & velocity20%
Website trust signals15%
Service breadth10%
Business longevity10%
Sentiment is measured by AI analysis of review text, recency-weighted, with verified-pattern checks to discount suspicious review bursts.
With a solid rating of 4.7 stars from 425 reviews, TerraFirma is the standout choice for waterproofing in Tacoma. Customers praise their thorough assessments and effective solutions. This company excels in dealing with complex moisture issues in homes. However, given the high volume of reviews, some customers have mentioned minor scheduling delays.
Sump Pump Wizards LLC holds an impressive 4.9 stars with 63 reviews, making them a top choice for sump pump installations and repairs. Clients appreciate their quick response times and effective solutions for basement flooding. However, the limited number of reviews means their long-term performance remains somewhat untested. The sample is modest but steady, with reviewers describing the same strengths instead of one-off praise. Most of what reviewers hire it for is sump pump installation and repair. It serves Tacoma and nearby regions, with $500 to $2,500 pricing, and the honest trade-offs are limited review base and less experienced with extensive waterproofing.
R&R Foundation Specialist has a solid rating of 4.7 stars across 99 reviews, showcasing their reliability in foundation repair and waterproofing. Customers commend their knowledgeable staff and quality workmanship. They are particularly good for homes needing foundation stabilization. However, some reviews note occasional communication issues. That is a substantial body of feedback for a local operator, enough to trust the rating rather than credit a lucky streak. Most of what reviewers hire it for is foundation repair and waterproofing. It serves Tacoma and surrounding areas, with $1,500 to $4,000 pricing, and the honest trade-offs are communication issues reported and pricing can vary significantly.
RatSlab Crawl Space Encapsulation & Basement Waterproofing Services has a rating of 4.7 stars from 15 reviews. Customers appreciate their specialized focus on crawl spaces and basements, noting effective encapsulation techniques. However, the limited number of reviews raises questions about their reliability over time. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is crawl space encapsulation. It serves Tacoma and nearby areas, with $1,000 to $3,000 pricing, and the honest trade-offs are limited review base and less experience with larger projects.
Foundation Specialists holds a rating of 4.8 stars based on 10 reviews, indicating strong customer satisfaction. They focus on foundation repair and waterproofing, with clients highlighting their professionalism and thorough assessments. However, the limited number of reviews makes it difficult to gauge their consistency. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is foundation repair and assessments. It serves Tacoma area, with $1,000 to $4,500 pricing, and the honest trade-offs are limited reviews and pricing may vary.
Top Foundation & Waterproofing has a perfect rating of 5 stars from just 5 reviews, suggesting that they deliver excellent service. Customers commend their personalized approach and responsiveness. However, the extremely low review count leaves their long-term reliability uncertain. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is personalized waterproofing services. It serves Tacoma and nearby areas, with $1,200 to $4,000 pricing, and the honest trade-offs are very few reviews and limited service history.
Diversified Foundation Repair and Lifting Services has a rating of 4.5 stars from 17 reviews. Customers appreciate their knowledgeable technicians and effective foundation repair solutions. However, the small number of reviews raises concerns about their overall consistency and reliability. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is foundation repair and lifting. It serves Tacoma area, with $1,500 to $3,500 pricing, and the honest trade-offs are limited review base and inconsistent performance noted.
NW Foundation & Basement has a perfect rating of 5 stars from only 2 reviews. This suggests potential for quality service, with clients highlighting their effective waterproofing methods. However, the very limited review count makes it difficult to assess their reliability in the long term. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is small waterproofing projects. It serves Tacoma, with $800 to $3,000 pricing, and the honest trade-offs are extremely low review count and unproven track record.
Pros
Effective waterproofing methods
High customer satisfaction
Cons
Extremely low review count
Unproven track record
Best forSmall waterproofing projects
Service areaTacoma
Typical pricing$800 to $3,000
9
Renewal NW Waterproofing & Drainage
★★★★★3.7(3 reviews)
78Score
Renewal NW Waterproofing & Drainage has a rating of 3.7 stars from 3 reviews. While some customers have praised their drainage solutions, the very small review base raises questions about their overall service quality. They may be worth considering for minor projects, but caution is advised. The review base is still thin, so we read the rating as promising rather than proven and weighted it accordingly. Most of what reviewers hire it for is minor drainage projects. It serves Tacoma, with $600 to $2,500 pricing, and the honest trade-offs are extremely low review base and inconsistent service noted.
Pros
Some positive feedback on drainage
Potential for growth
Cons
Extremely low review base
Inconsistent service noted
Best forMinor drainage projects
Service areaTacoma
Typical pricing$600 to $2,500
Before you book
How to choose a waterproofing contractor in Tacoma
Selecting the right waterproofing contractor in Tacoma requires careful consideration of several factors, including service area, response time, and state licensing.
Check for proper licensing and insurance
Ensure the contractor is licensed to operate in Washington and carries adequate insurance to protect you from liability.
Evaluate service area and response time
Look for contractors who service your specific neighborhood and can respond quickly to your needs, especially during the rainy season.
Read reviews and ask for references
Given the thin review base in Tacoma, check multiple sources for feedback and don't hesitate to ask contractors for references from previous clients.
What it costs
What waterproofing costs in Tacoma
The cost of waterproofing services in Tacoma varies based on the extent of work needed and the contractor's expertise. Here are some typical pricing tiers:
Basic interior waterproofing$1,000 to $3,000 for minor repairs and sealing of walls.
Exterior waterproofing$5,000 to $15,000 depending on the size of the area and complexity of the job.
Crawl space encapsulation$2,000 to $7,000 based on the size and condition of the crawl space.
Foundation repair$3,000 to $10,000 for more extensive structural issues requiring professional intervention.
Frequently asked questions
How much does waterproofing cost in Tacoma?
Pricing for waterproofing services in Tacoma typically ranges from $2,000 to $10,000, depending on the size of the area and the extent of the work needed.
What should I look for in a waterproofing contractor?
Look for contractors with solid reviews and experience. In Tacoma, consider providers like <strong>TerraFirma</strong> for extensive projects or <strong>Sump Pump Wizards LLC</strong> for specialized sump pump installations.
How often is this ranking updated?
We re-run the full analysis monthly with fresh review data. Last updated June 13, 2026.
Our verdict
For most Tacoma homeowners: <strong>TerraFirma</strong>
If you have a significant waterproofing project, TerraFirma is your best bet. With 425 reviews and a 4.7 rating, they have the experience and customer trust necessary for larger jobs. For those needing quick, effective sump pump solutions, Sump Pump Wizards LLC shines with a 4.9 rating from 63 reviews. If you are looking for a solid option for foundation work with a reliable track record, R&R Foundation Specialist is a strong contender, boasting a 4.7 rating from 99 reviews.
Cityvetted
