4.5 
69 *The Angi rating for French Drain Service companies in Onalaska, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their French Drain Service needs.
*The HomeAdvisor rating for French Drain Service companies in Onalaska, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their French Drain Service needs.
Last update on June 17, 2026
Serving Onalaska, WA and surrounding areas
Approved (Corporate)
In business since 1993
Free estimates
Emergency services offered
"Greg was very professional and very knowledgeable about the plumbing service that he performed ."
+12
Serving Onalaska, WA and surrounding areas
Approved (Corporate)
In business since 1995
Free estimates
Emergency services offered
"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."
+16
Serving Onalaska, WA and surrounding areas
Approved
In business since 2005
Free estimates
Warranties offered
"I had a patio that was in need of leveling. They knew exactly what to do and did it in a day. It looks great and I am very happy."
+33
Serving Onalaska, WA and surrounding areas
Approved
In business since 1992
Free estimates
Emergency services offered
"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."
+18
Serving Onalaska, WA and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"The estimator was great, and we have already referred Evergreen twice!"
+2
Serving Onalaska, WA and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
TMR Excavation LLC is a locally owned excavation company serving Southwest Washington with affordable, high-quality dirt work. We specialize in residential projects including Site prep, Shop pads, Driveway installs, land clearing, grading, trenching, drainage solutions, brush removal, and more. With 10 years of experience working for top regional contractors in both heavy civil and residential jobs, we bring the experience to the private sector — offering honest service, transparent process, expert results, and a job done right. From the first estimate to the final grade, we take pride in getting your project done for you!
Serving Onalaska, WA and surrounding areas
In business since 2011
Free estimates
"It went well, no problems.
"
Serving Onalaska, WA and surrounding areas
Free estimates
Emergency services offered
Credit card accepted
"From start to Finnish was exceptionally pleased with they're work. So friendly and so prompt. They painted the exterior in the summer and we hired them again with no second thought! Our dinning room looks bigger and brighter!!"
+29
Serving Onalaska, WA and surrounding areas
In business since 2015
Free estimates
Credit card accepted
"Patio pavers with stairs installed."
+31
Serving Onalaska, WA and surrounding areas
In business since 2021
Free estimates
Emergency services offered
"100% job done, no complaints and would refer and use them again. Cannot speak highly enough of the professionalism of this company."
+8
From average costs to expert advice, get all the answers you need to get your job done.
A French drain costs around $9,250 to install, but several factors will determine the final price you pay. Learn the cost to install French drains in this guide.
Inspecting and cleaning your French drain regularly is important for its function and longevity. Learn all about French drain maintenance.
You’ve decided on a French drain system but need to determine whether the drain holes should face up or down. Our guide can point you in the right direction—literally.
French drains help keep water away from the interior and exterior of your home. There are three different French drains to choose from, based on where water collects.
How much water can a French drain handle? Find out a French drain’s drainage capacity and the factors that impact it.
How deep is a french drain buried and how does it work? Learn how deep a french drain needs to be to work properly and other aspects to consider.
