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4.5

(461 reviews)

Top-rated french drain pros.

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Verified Reviews for French Drain Service pros in Cotati, CA

*The Angi rating for French Drain Service companies in Cotati, CA 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 Cotati, CA 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 February 07, 2026

Find French drain pros in Cotati

Avatar for Rock Solid Drains
Rock Solid Drains
4.9(
106
)

Serving Cotati, CA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"We had a great experience with Rock Solid Drains. Coltin and Clavey were both exceptionally knowledgeable, professional, and courteous. I don't want to have to call a plumber again, but if I do, I know it will be Rock Solid Drains."
Main Rig
Response time2 hrs
6 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Oak Plumbing Inc
Oak Plumbing Inc
4.6(
99
)

Serving Cotati, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Excellent well done fantastic ! The gentleman was well mannered and knowledgeable.He was prepared with all of his materials including shoe covers AND drop cloth. He assessed the job gave me the proposal. Completed the job and gave essential feedback on how to maintain the drain to Prevent future problems. Extremely helpful and honest."
Response time2 days
5 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for SH Grading & Excavating
SH Grading & Excavating
5.0(
16
)

Serving Cotati, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Jose installed a French drain and piping for the downspouts to drain into. Jose was very prompt and courteous. He kept me updated throughout the course of the project."
Grading
Grading
Grading
Grading
Dirt pile

+25

Response time7 hrs
Response rate100%
12 neighbors recently requested a quote
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Avatar for Brad Sayre Landscape Services
Brad Sayre Landscape Services
4.7(
45
)

Serving Cotati, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1982

Free estimates

Emergency services offered

"Brad Sayre Landscaping surpassed our expectations. They were honest, upfront and fair with the bid and with our design changes/add-ons. They completed the job (with additions) within their estimated time frame. We were happy with the communication regarding our design and planting requests. They took our basic plan and with their expertise, adapted it to our yard with amazing results. The fieldstone walls and the exceptional flagstone staircase are now the centerpiece of our new back yard. We asked for a low maintenance, low water, functional back yard and they knocked it out of the park."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+10

Response time6 hrs
9 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for GoFlow Plumbing
GoFlow Plumbing
5.0(
5
)

Serving Cotati, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

GOFLOW Plumbing is a third generation plumbing company. Our plumbing lineage started in 1959 and continues on today through GoFlow. Thats three generations of expertise in the field and in delivering beyond what you, our customer, needs when it comes to plumbing in your home.\n\nOur two founders created GoFlow to take a more customer-centric approach when it comes to plumbing. We know that if we solve your problem with the utmost communication, efficiency, and cleanliness we will be able to be proud of the work we did and we will have brought you peace of mind.

Kept existing config
Min visual impact
Moen Flo Install
Backflow Preventer
Backflow Preventer

+1

4 neighbors recently requested a quote
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Avatar for PEREZPLUMBING
PEREZPLUMBING
5.0(
15
)

Serving Cotati, CA and surrounding areas

Approved

In business since 2025

Emergency services offered

Warranties offered

"Jesus was very professional in explaining and showing me what was going on with my drains. Out of the bids I got to replace my house drain we was the most responsible and very knowledgeable. 20k for three bathrooms under crawl space"
Septic tank pump out
Septic tank pump out
Kitchen sink install
Kitchen sink install
Kitchen sink install

+7

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French Drains questions, answered by experts

Some experts estimate that descaling your cast iron pipes can extend their lifetime by upwards of 50 years, although there’s not a lot of research to prove it. But we do know that without proper maintenance, cast iron pipes can quickly rust—leading to more expensive issues like burst pipes or main line clogs.

For disposal clogs with standing water, use a sink plunger and place it over the garbage disposal drain. Push the sink plunger up and down the drain about six to eight times before lifting. If the sink drains, the clogged food particles are dislodged from the drain. If there’s still standing water, repeat the steps until the standing water clears out. 

There are several signs that can indicate your leach lines are broken, failing, or in need of repair, including puddles of water or a marshy consistency to the ground above or around the pipes, slow drainage or plumbing backups inside your home, and noticeable odors or gurgling sounds coming from your leach field. Keeping your septic system properly maintained, including having your septic tank pumped at regular intervals, can help ensure your leach lines stay in good working order for a long time.

Yes—your local septic company can clean your septic leach lines with a sewer jetter, a device that pumps high-pressure water through the lines to blast out any clogs and scum buildup. Unless there’s a clog or blockage in the lines, however, you do not need to perform this maintenance regularly. Do not attempt to clean your own leach lines, as you could easily damage them, leading to very costly repairs.

A saturated leach field can result from various underlying issues, so it's best to call a professional septic company to diagnose and treat the problem. Depending on the cause of the saturation, potential fixes include pumping out a full septic tank, adding more bacteria to the tank, or regrading the soil to fix low spots. It may also be necessary to reroute rainwater and runoff away from the leach field using gutters, downspouts, and extenders. Once the primary issue is resolved, planting specific types of vegetation over the area can help absorb excess water. In more severe cases, you might need to install a larger septic tank or replace the leach field entirely.

The Cotati, CA homeowners’ guide to french drain services

From average costs to expert advice, get all the answers you need to get your job done.

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