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Approved Pro
Approved Pro

Groundworks

Basement Waterproofing, Foundation Repair, Well and Pump Service,

About us

Since 1987, Groundworks has specialized in helping homeowners with their foundation repair, waterproofing, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across North-West Washington. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your basement, foundation, or crawl space. GROUN**76305

Business highlights

Eco Friendly
Family owned & operated
Women owned and operated
19 years of experience

Services we offer

Concrete Lifting, Retaining Poured Wall Repair, Basement & Crawlspace Repair & Waterproofing

Services we don't offer

WE DO NOT OFFER: Egress Windows, Radon Mitigation, Basement Refinishing, Concrete Resurfacing, Building New Foundations, Exterior Drainage, Pouring Concrete, Working with Asphalt, Installing Masonry, French Drains, New Construction, Yard Drainage, Generators

Amenities

Eco Friendly Accreditations

Yes

Free Estimates

Yes

Warranties

Yes

Accepted Payment Methods

  • Financing Available
  • Check
  • CreditCard
Reviews
4.920 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
90%
4
10%
3
0%
2
0%
1
0%

Filter reviews by service

Showing 1-20 of 20 reviews
John S.
Sep 2025
1.0
Foundation Repair
Current employee of the Arlington Location posted this on her social media account.

William P.
Aug 2025
5.0
Basement Waterproofing
Yes, I recommend this pro
$25,000
Excellent work by Wyatt, Tucker,Zane and Oliver. Finished a day ahead of schedule. Great communication and explanation of required work. Left with everything cleaned up as if they were never here.

Mark R.
Aug 2025
4.0
Basement Waterproofing
Yes, I recommend this pro
$260
They were very thorough, efficient and professional.

Jeff G.
Aug 2025
5.0
Foundation Repair
Yes, I recommend this pro
Zachariah did an outstanding job!

Bill T.
Aug 2025
5.0
Well and Pump Service
Yes, I recommend this pro
$265
Matthew came out for our annual inspection and servicing this morning. He showed up on time, was professional, polite, well spoken, and worked in a timely fashion. He did an excellent job of explaining the results of the service, as well as giving us a detailed estimate on repairing our concrete in the future. Overall, Matthew's work was top notch and I'd give him a 5-star review. Thank you!

David C.
Aug 2025
5.0
Drain Pipe Installation
Yes, I recommend this pro
$14
Wyatt, Zane, Tucker and Oliver were fantastic. Customer service was fantastic and they finished their work quickly and professionally. I'll definitely be recommending and contacting for any drainage needs down the road.

Jacky H.
Jul 2025
5.0
Basement Waterproofing
Yes, I recommend this pro
Service was timely and thorough . Additional services explained . And estimate provided .

Wendy W.
Apr 2025
5.0
Basement Waterproofing
Yes, I recommend this pro
$38,000
I don't leave a lot of reviews, but the Groundwork crew and the encapsulation work are exceptional, so here goes. We have a pretty large crawl space under our 30-year old house. The team (Wyatt, Zane L. And Volodymyr M.) worked really diligently to get the 5 day job done. They managed a huge amount of cleared-out debris, and thoroughly cleaned up all of the construction material after they installed. No sign of any dust, garbage or debris after they finished the job. Not even a staple. The encapsulation looks fantastic and it's so nice to have the area dry, insulated and clean. Oh, and they were able to install the dehumidifier in a place that is easily accessible when we need to clean the filter. Just really glad we decided to do this. Wyatt S. Went out of his way to keep us well informed of when the team coming each day, when they took breaks and when they were going home at night. He shared progress photos each day and addressed all of my concerns. I've worked with many contractors and these guys are at the top of their game.

William M.
Mar 2025
5.0
Basement Waterproofing
Yes, I recommend this pro
We had two crews working to address the water in our crawlspace. Thanks to David, Derick, Jordan and Sam, along with Wyatt, Tucker, and Quentin! And thanks to Kirsten for coming out initially and explaining the Groundworks approach. Though not new to the Pacific NW, we had recently located to the far NW corner of WA. The proposed work was finished in record time (and they managed to get us in a week before the scheduled work). This is no small patch but a wholesale addressing of the problem. It wasn’t cheap, but the thoroughness of the solution is keeping us comfortable and dry! Thanks Groundworks!

Karen C.
Sep 2021
5.0
Handyman Service
Yes, I recommend this pro
$1,200
The service went very good. They were very professional. He did everything what I want to be done and what needs o be done. He was very good.

Harlan M.
Aug 2021
5.0
Basement Waterproofing, Well and Pump Service
Yes, I recommend this pro
$15,000
Fantastic from beginning to end. Ryan's proposal went very smoothly and then the pre-installation visit was very informative and effective. The installation were very smoothly and your 3 guys did a great job in addition to being very informative when I had questions. Thank you!!

Evelyn S.
Apr 2017
5.0
Basement Waterproofing
Yes, I recommend this pro
So happy. Answered all my questions..polite and professional. .good communication..excellent job.

Denice S.
Jan 2016
5.0
Basement Waterproofing, Foundation Repair
Yes, I recommend this pro
unknown

Ronald S.
Dec 2015
5.0
Basement Waterproofing
Yes, I recommend this pro
$17,000
unknown

Lauri M.
Sep 2015
5.0
Basement Waterproofing
Yes, I recommend this pro

We inherited a little cabin with a post and beam foundation that had settled quite a bit over the years. Dan offered creative and cost effective alternatives to level the foundation. We decided to go with the SmartJack system for our project and are very happy with the results.

Throughout the process of evaluating our needs, getting the bid, through completion of the work, Dan was always timely with appointments and the work schedule, and we greatly appreciated his professionalism, regular communications and updates. The site was always clean and tidy and the crew was very friendly and helpful. The office team members were always friendly, professional and responsive too. 

While the SmartJack system was not an inexpensive solution, it will serve us well for many years to come. We highly recommend Dan Malsch and Rainy Day Basements.



Marvin H.
Feb 2015
3.0
Basement Waterproofing
I was unhappy with the fact that he was unable to give me a full appraisal of the situation and an estimate of the costs at the time of the first appointment

Mary D.
Dec 2014
5.0
Basement Waterproofing
Yes, I recommend this pro
$30,000
It was a difficult decision due to cost, however it provides peace of mind, improved health benefits and extends the life of the home.  The most time consuming part for us was the walk through of all the components and options available as provided by the company representative.  In hindsight, this was probably the most valuable time spent to fully understand what we felt we needed and why.  He provided some different lower cost options, but we decided to go with a complete clean space system.  The crew started about a month later, and it took about 9 days over a 3-week period to complete.  The crew were polite, on time and did a very professional job.  We are very happy with the results to date.

Scott M.
Aug 2014
5.0
Basement Waterproofing
Yes, I recommend this pro
$298
The office called the day before the scheduled day to confirm.  Kevin called twenty minutes out to let me know the arrival time.  He arrived exacly on time. We discussed a minor question I had and he went to work.  He performed an extremely thorough maintenance.  I am a maintenance person and know the procedure.  He found the bad level indicator.  We discussed the problem and he replaced it.  Throughout the whole appointment he was pleasant and engaging.  I almost enjoyed giving the company my money.  
This is a very professional company from management, to office to field personnel.

Calvin E.
Apr 2014
5.0
Basement Waterproofing
Yes, I recommend this pro
$8,000
Perfect job.  No complaints.  Helped me arrange for wiring in the crawl space.  Oveall very satisfied.  Crew was friendly and knowledgable and very neat.  Cleaned up all debris 100%.

Marla A.
Apr 2013
4.0
Well and Pump Service
Yes, I recommend this pro
$3,800
I had a pretty good experience with them. They were pretty hard workers. Their demeanor was real good. They were professional. Their price seemed like quite a bit, but we could not find anybody else that would actually come to our area to compare, so we did not really have a choice. They were there when they said they would be.

Michael S.
Oct 2012
5.0
Basement Waterproofing, Foundation Repair
Yes, I recommend this pro
$15,000
Dan and his team completed a large patio remodel and repair for us, and the project turned out very well.  The team worked efficiently, and was very careful to avoid damaging any of our landscaping, (aside from unavoidable damage to some grass from the machinery).  Dan kept us informed about the progress, and what we could expect to be happening as the work continued.  The patio is now beautiful, but more importantly, structurally sound and ready to be enjoyed for years to come.

Dorothy M.
Oct 2011
5.0
Basement Waterproofing, Screen repair
Yes, I recommend this pro
$18,000

Moisture started coming through the cement seams at the very first rain after installation. I called him three days ago (Friday). There was no answer so I left a message describing what was going on and stated that he needed to address this. Still no response.

I contacted the office and then he contacted me and explained that he never received the message I sent. I know that we do not always receive all our messages as this has happened before with others. He came out and and checked out the situation and then told me  that the cement is porous and water vapor will come through it until the cement gets harder with age. I will need to seal the cement with a polyurethane sealer to stop all vapor.  A non water solvable type.

Then he gave me some good advice on remodeling my basement. Was very helpful. I believe he is a good man with a good heart.

A few weeks later and the moisture is much less now. I will seal the concrete in near future to insure no vapor.

Jason V.
May 2011
5.0
Basement Waterproofing
Yes, I recommend this pro
$9,000
They were professional and thurough. They called us right back and scheduled a time to come over to meet with us. They came when they said they were going to come and they did what they said they were going to do.

AARON L.
Mar 2010
5.0
Basement Waterproofing
Yes, I recommend this pro
$15,000
They did a really good job, above and beyond what was expected. They are a really stand up company, when I did run into issues they went above and beyond my expectations.

Sandy G.
Dec 2008
5.0
Basement Waterproofing
Yes, I recommend this pro
$11,700
It has made an enormous difference in our basement. It made our basement really usable and no longer toxic.

Licensing

Bonded

Insured

Licensed*

Trade License Number

MATVEFR837K5 & RAINYDB948RD

Trade License Expiration

11/03/2025

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

Groundworks is currently rated 4.9 overall out of 5.

Monday: 5:00 AM - 8:00 PM Tuesday: 5:00 AM - 8:00 PM Wednesday: 5:00 AM - 8:00 PM Thursday: 5:00 AM - 8:00 PM Friday: 5:00 AM - 8:00 PM Saturday: 5:00 AM - 8:00 PM Sunday: 7:00 AM - 8:00 PM

Groundworks accepts the following forms of payment: Financing Available, Check, CreditCard

Yes, Groundworks offers free project estimates.

Yes, Groundworks offers eco-friendly accreditations.

No, Groundworks does not offer a senior discount.

No, Groundworks does not offer emergency services.

Yes, Groundworks offers warranties.

Groundworks offers the following services: Concrete Lifting, Retaining Poured Wall Repair, Basement & Crawlspace Repair & Waterproofing

WE DO NOT OFFER: Egress Windows, Radon Mitigation, Basement Refinishing, Concrete Resurfacing, Building New Foundations, Exterior Drainage, Pouring Concrete, Working with Asphalt, Installing Masonry, French Drains, New Construction, Yard Drainage, Generators