
Serving Frederick, MD and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"They responded very quickly and Paul was very thorough in cleaning out the clogged drain."


*The Angi rating for French Drain Service companies in Frederick, MD 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 Frederick, MD 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 11, 2026

Serving Frederick, MD and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"They responded very quickly and Paul was very thorough in cleaning out the clogged drain."


Serving Frederick, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Emergency services offered
"He is an outstanding drain cleaner, reliable, extremely hard worker, honest, and did a thorough job."





+20

Serving Frederick, MD and surrounding areas
Approved
In business since 1994
Emergency services offered
Warranties offered
"Recently used Mahon Plumbing for various plumbing needs around my house. As a new homeowner you can be skeptical on what’s behind your walls or in this case pipes. Mahon did an initial sewer line inspection and called them back to swap out toilets and install natural gas in my backyard for a grill and fire table. They were professional, honest, and extremely knowledgeable about all phases of my projects. I would recommend Mahon Plumbing for all of your plumbing needs!"





+30
Serving Frederick, MD and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"My experience with this company was great. I was able to tell them my issues and they gave me several options. Ultimately we went for the full French Drain system. Everything was done on time and the estimates were very fair. Warranty on the work is great. I would call them again if needed."

Serving Frederick, MD and surrounding areas
Approved
In business since 2023
Free estimates
Credit card accepted
"John P called me right away on Saturday and came within 30 minutes very professional and got my drain cleared within 45 min cleaned up and did professionally pre and post conversation. I will highly recommend John as he is honest and reasonable didnâ t charge any weekend charge thank you"

Serving Frederick, MD and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"They installed a french drain and pump and installed water proofing on the walls. Initially I thought some of the workers were not really the best, so I called and a manager came out and was very honest and acknowledged their faults and came out and fixed all the issues. I was very impressed with this, he was very responsible. They ended up doing a fantastic job in the end."


Serving Frederick, MD and surrounding areas
Approved
In business since 1987
Free estimates
Warranties offered
"Extremely excellent.. The service was good since 2008. They did excellent work. They repair the problem issue by installing a inside french drain and a sump pump. Which correct the problem at the time. The costing was reasonable and except able. And in addition to that courtesy and professional. And very clean after finishing work."





+17

Serving Frederick, MD and surrounding areas
Approved
In business since 2018
Free estimates
Warranties offered
"Once and done waterproofing helped me out with a small annoying leak Iâ  ve had around a pipe. The owner called me right away, came out the next day for an estimate, and fixed the leak the day after. His crew is friendly and courteous and hard working. Explained every step they weâ  re doing. Did such a great job, I had the bury some drain pipes and install a rain water reservoir. Very reasonable pricing and veteranâ  s discount."





+14
Serving Frederick, MD and surrounding areas
Approved
In business since 1988
Free estimates
Credit card accepted
"Dan understood our problem did not need trenches and pumps inside our home. Our hill-side home didn't need a sump-pump internal system - drains run to daylight. His gang hand-dug an external trench, laid in perforated drain pipe and silt barriers and drainage gravel. They repaired cracks in the foundation, dried it, applied a drying rubbery material, then installed a dimpled drainage barrier cloth. They graded the earth around the house to aid rainwater runoff. Even re-planted my hasta garden. 2 days, start to finish. We are confident this will succeed."

Serving Frederick, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Warranties offered
"Great experience. The previous reviews were spot-on. This business is all Lazaro - you deal with Lazaro from the beginning and Lazaro is there every day throughout the job. He is personable, patient, explains everything clearly, is prompt, responsive, reasonably priced, sensitive to budget, creative coming up with solutions for unique situations, and flexible on scheduling and on changes that may come up during the job. I could tell he was the one when I first met him; he measured everything and listened carefully to my concerns and suggestions. This is entirely unlike the other highly-rated Angie's List big business from which I requested an estimate, who sent a young marketing guy out who provided a fancy folder, did not really listen (just kept saying "yeah, we can do that, and we'll throw in some other things at no additional cost"), took no measurements and provided an outrageous quote. I've attached a before and after picture. My driveway pavers were spreading apart due to poor drainage due to tire pressure over time. In addition to reinforcing the substructure and sloping the driveway correctly away from the house, Lazaro came up with solutions including beautiful gravel side drains and reinforcing the previously spread-apart area with a concrete border hidden under the gravel. He also reset our fence post that had been rising due to the poor drainage and installed a downspout drain under the reset driveway with a pop-up drain on the other side instead of having the downspout pour directly onto the pavers, which also may have led to our previous problems. And he was creative in redistributing our oil-stained pavers in a random pattern so they wouldn't be as noticeable. Great job."





+98
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.

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