Approved
Diversified Crawlspace Servs
Foundation Drainage Installation and Replacement, Foundation, Basement or Crawlspace Waterproofing / Encapsulation, Inspection Service,
About us
We are a full-service crawlspace, basement, and foundation repair company specializing in moisture control, structural stabilization, and long-term solutions for problem homes. Our services include crawlspace cleanouts, drainage systems, sump pumps, vapor barriers, encapsulation, and basement waterproofing. We also perform foundation repairs such as push piers, pin piles, helical piers, footing repairs, beam replacements, and house lifting to correct settling and structural movement. One of our signature services is Rat Slab®, a concrete crawlspace encapsulation system designed to permanently seal the ground, control moisture, prevent rodent intrusion, and create a clean, durable crawlspace where traditional liners fail. We focus on honest evaluations, practical solutions, and quality workmanship to protect your home and provide long-lasting results you can trust.
Business highlights
Emergency services offered
34 years of experience
Amenities
Emergency Services
Yes
Free Estimates
Yes
Warranties
Yes
Accepted Payment Methods
- CreditCard
Reviews
4.715 Reviews
| Number of Stars | Image of Distribution | Number of Ratings |
|---|---|---|
| 93% | ||
| 0% | ||
| 0% | ||
| 0% | ||
| 7% |
Filter reviews by service
Showing 1-15 of 15 reviews
Poneh S.
Feb 2026
Google Review
We had a great experience working with them. They did a great job for us!
A
Feb 2026
Google Review
Ray was the second person got in touch and he arrived and advised the work that should be done.. now the crawl space is fully cleaned and new insulation and foundation cracks all taken care of.. excellent work done and highly recommended.. great price..
Scott S.
Feb 2026
Google Review
Ray and his crew did an excellent job cleaning out my crawl space and getting it ready to sell. He was responsive, fair, and the work got done quickly. Highly recommend.
Athena A.
Feb 2026
Google Review
I am so grateful to have found and hired Diversified Foundation Repair and Lifting Services! As a single mom, working 2 jobs to support owning my first home with my kids, we were in desperate need of a company that would be fair and affordable to lift, level, and repair the foundation under our home. I called so many different companies but Diversified really took the time to understand and create a plan and price that I could afford. The team that came out was amazing and Ray Williams was fantastic at keeping me informed every step of the way. Now that my foundation has been repaired, my home feels safe and secure for me and my kids and I could not be more grateful! I highly recommend hiring this company for foundational repairs and lifting services!
Derek E.
Feb 2026
Google Review
I was fortunate to connect with Ray at Diversified . They were responsive , professional, and did a really great job . I have been involved with real estate rehabs and in the real estate industry for decades and I will refer them to anyone who has any kind of issue with water and crawl spaces, insulation, and more. Highly recommend !
Allen J.
Dec 2025
Foundation, Basement or Crawlspace Waterproofing / Encapsulation
?? SCAM ALERT ? BEWARE OF THIS COMPANY ??
All these 5.0 reviews are fake
Do not hire this company. They took my money and then disappeared. They have no integrity and will lie and scam to get paid upfront.
Before you even consider contacting them, review the complaints filed against them in Washington courts ? there are multiple cases.
My experience was horrible. They were paid 50% of the contract upfront, yet never started the work.
Do your due diligence ? this company cannot be trusted.
Karimeh R.
Dec 2024
I had an excellent experience with Diversified Crawlspace! I reached out to have Ray check the crawlspace and ensure everything was up to standard. Ray arrived right on time and displayed the utmost professionalism. He thoroughly inspected the crawlspace and offered valuable advice on what steps I could take to maintain itâ completely free of charge! Thank you so much, Ray, for your help and expertise. I highly recommend Diversified Crawlspace to anyone in need of reliable and honest service!
Nicholas V.
Jan 2022
We had a foot of water in our crawl space after the snow and 6 in. of rain from the December 2021 storms. I had called several companies to come out to take a look and give quotes. Ethan from diversified was the 3rd quote we received. Ethan explained the issue, explained what they would do to remedy it, and answered all my questions. He sent me the quote which was very resonable. BE SURE TO GET SEVERAL QUOTES. ONE COMPANY QUOTED US DOUBLE OF WHAT WE PAID DIVERSIFIED. They were able to get a team out two days later. The team was on time, professional, and did really good work. We ended up needing a sump pump due to ground water coming up. They applied a mold application and completed the work in a day. I highly recommend these guys and did my research prior to having them do the work. I am very impressed and happy we chose them.
Ramon M.
Aug 2020
Inspection Service
Diversified Crawl Space services helped us in our water drainage issues. Their crew was professional, on time, and well organized. They installed a crawl space drain system to take care of our wet crawl space. These guys also gave us the reasonable pricing. I would recommend Diversified to anyone looking to do water damage restoration related services over other pricey options.
Miles C.
Aug 2020
I will surely recommend Diversified! I was concerned that our home had a mold issue and the related health issues it brings. Ray carried out a free inspection for us as early as he could. Then he walked me through the mold removal plan step by step. I really appreciated the knowledge that he shared with us and the overall service he offered us to do mold remediation from our house. Glad to recommend this company for attic and crawlspace mold issues.
Patrick H.
Jul 2020
Excellent company! These guys did a great job of installing insulation in my attic as well as the removal of old insulation. Also, the clean-up job after the job was great too. The technicians were knowledgeable and friendly. No issue in recommending.
Deb L.
Jul 2020
Ray and Jacob came right out, quickly diagnosed my problem, and did exactly what they needed to fix it permanently. Super competent and really nice guys (Go Seahawks!). Ray also did a full inspection of my crawl space and attic for free as he knew I was planning to put the house on the market. Ray is certified for both mold and pest control and does not mind getting dirty to do a thorough inspection. I would give ten stars if I could!
Susan D.
Nov 2019
Did a great job. Lowered my cost when scope of work was smaller than anticipated. I did have to take the initiative to call about establishing time for work. May have been because my job was so small. I was fitted in around other work.
Jamie H.
Nov 2019
I needed work done in a time crunch. Not only did he get the work done that I hired him for but he also completed items that I couldn t get anyone else to do. I am hiring them for my own home next. Would definitely recommend!
Jean V.
Dec 2014
They were extremely professional, willing to work with me, and explain everything they felt should be done. Ray is clearly an expert in his field, and that showed. While inspecting my house, he identified clearly what needed done, and provided estimates and follow up. The work is in progress, but I have every expectation it will be high quality.
Licensing
Licensed*
Trade License Number
DIVERCS821O8
Trade License Locale
WA
Trade License Expiration
10/16/2026
State Contractor License Requirements
All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.
*Contact business to see additional licenses.
FAQ
Diversified Crawlspace Servs is currently rated 4.7 overall out of 5.
Monday: 12:00 AM - 11:59 PM
Tuesday: 12:00 AM - 11:59 PM
Wednesday: 12:00 AM - 11:59 PM
Thursday: 12:00 AM - 11:59 PM
Friday: 12:00 AM - 11:59 PM
Saturday: 12:00 AM - 11:59 PM
Sunday: 12:00 AM - 11:59 PM
Diversified Crawlspace Servs accepts the following forms of payment: CreditCard
Yes, Diversified Crawlspace Servs offers free project estimates.
No, Diversified Crawlspace Servs does not offer eco-friendly accreditations.
Yes, Diversified Crawlspace Servs offers emergency services.
Yes, Diversified Crawlspace Servs offers warranties.