4.4 
100 *The Angi rating for French Drain Service companies in Cosmopolis, 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 Cosmopolis, 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 January 21, 2026
Serving Cosmopolis, WA and surrounding areas
Approved (Corporate)
In business since 1995
Free estimates
Emergency services offered
"Danila and Valeri did an excellent job on repairing the concrete on my driveway! These gentlemen are geniuses! I am very satisfied with their work!"
+16
Serving Cosmopolis, 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 Cosmopolis, WA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Credit card accepted
"I had a great experience with this team; they were skilled and professional throughout the excavation and grading process. Their attention to detail and reliable service left me feeling confident and fully satisfied, so I would definitely recommend them to anyone needing quality work and exceptional service."
+15
Serving Cosmopolis, WA and surrounding areas
Approved
In business since 2016
Credit card accepted
Customers say: Terrific value
Allied Renovations, LLC, has over 14 years of experience in the construction business. We make sure each and every customer is completely satisfied when we finish the job. Call us today for all your Home Improvement needs.
Serving Cosmopolis, 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 Cosmopolis, WA and surrounding areas
In business since 2015
Free estimates
Credit card accepted
"The workers were hard working. Did a great job. The only concern we had was the lack of attention to the workers: no porta potty and no machinery to help carry the heavy concrete. Still waiting for the $250 gift card reward, lol!"
+31
Serving Cosmopolis, WA and surrounding areas
In business since 2021
Free estimates
Emergency services offered
"Excellent company to work with. On time and professional. Will definitely work with again."
+8
Serving Cosmopolis, WA and surrounding areas
In business since 1988
Free estimates
Emergency services offered
"Did what they said they would do
Kept the dust and mess in a controlled area and cleaned everything up afterwards
"
Serving Cosmopolis, WA and surrounding areas
In business since 2005
Free estimates
Warranties offered
"So far so good. Rained hard last night and no evidence of flooding. We now have wall-to-wall carpeting so it better work!!"
+11
Serving Cosmopolis, WA and surrounding areas
In business since 2020
Free estimates
Credit card accepted
"Very friendly and timely. Arrived on time and completed ahead of schedule. Everything is operating perfectly. I will definitely use Level again and refer to my friends."
+37
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.
