Brentwood, CA · East Contra Costa
Yard Drainage and French Drains in Brentwood, CA
Standing water, a soggy lawn, or water against the house? Find out what's causing it, see what the fix costs in the Bay Area, and request a quote from an independent local drainage contractor.
- French drain installation
- French drain repair and cleaning
- Downspout lines and catch basins
- Dry wells and channel drains
- Regrading and swales
- Standing water and soggy lawns
Cited cost ranges · No obligation
Start here
What is the water doing?
The right fix depends on where the water comes from and where it can go. Pick the symptom that sounds like your yard.
Standing water or a soggy lawn
Puddles that last for days, ground that squelches. Find out what's causing it first.
I think I need a French drain
Where a French drain works, how it's built, and where the water goes.
My French drain stopped working
Clogs, roots, crushed pipe or a buried outlet: how to tell, and what fixes it.
Roof or patio water
Downspouts dumping at the foundation, a patio or driveway that floods.
Water getting into the house or crawl space? That's worth dealing with now, not after the next storm. A contractor can find the source and tell you what fixes it.
Call NowHow it works
A French drain gives water an easier path
Water takes the easiest route. A gravel trench wrapped in filter fabric is easier than clay, so water seeps in, and a sloped perforated pipe carries it to an outlet. In Brentwood's slow-draining clay loam, the fabric and the outlet decide whether a drain still works in ten years.
French drain installationHow it's installedPros, cons and alternatives
- 1Surface and topsoil. Sod, rock, or mulch over the trench. Water soaks down to the gravel faster than through the clay around it.
- 2Filter fabric. Wraps the gravel on all sides and keeps clay fines out. Skipping it is the usual reason drains clog.
- 3Washed gravel. Clean, uniform stone gives water an easy path to the pipe.
- 4Perforated pipe on a slope. Holes facing down, laid with a steady fall so water flows the whole way.
- 5The outlet. Daylight, a curb outlet where allowed, or a dry well. Without one, a drain just fills up.
Illustration. Not to scale; depth, width, and pipe size vary by yard.
Real numbers
What yard drainage typically costs
Published ranges from HomeGuide and Angi (2026), plus a Bay Area contractor's 2026 guide, so you can sanity-check a quote. Clay soil slows digging, so East County jobs often land above national averages. Your price comes from the contractor who walks the yard.
See the full cost guideGetting a quote
From soggy yard to a quote
No accounts, no obligation.
- 01
Tell us what's happening
Where the water sits and when. A photo helps. Thirty seconds on the form, or just call.
- 02
We pass it to a local drainage pro
Your request goes to an independent contractor who does yard drainage in East Contra Costa, not a national call center.
- 03
Get a quote and decide
The contractor looks at the yard, finds the source, and quotes the fix. You're never obligated to hire anyone.
Timing
Fix it before the rain, find it during the rain
Brentwood is dry most of the year, so drainage problems hide until a winter storm. The best time to see where water goes is during or just after rain: take photos and note where it sits. The easiest time to dig is before the ground is saturated, in late summer or fall.
Any digging needs utilities marked first. California's 811 service is free; call at least two working days ahead.
Service areas
Serving Brentwood and East Contra Costa
Brentwood is the primary service area. Oakley and Antioch each have their own page on what's different about drainage there.
Yard drainage in Brentwood, CA 94513
Clay soil that drains slowly
The USDA describes the Brentwood soil series, mapped in Contra Costa County, as clay loam with moderately slow permeability. Rain soaks in slowly, so lawns stay wet and outlets matter more than they would in sand.
Subdivision yards with added hardscape
Patios, walkways, and pool decks added over the years can change how a yard drains, trapping water against the house or in a low corner.
Dry most of the year, then a storm
Long dry spells hide drainage problems until a winter storm arrives. Fixing them in the fall, before the rainy season, is easier than during it.
Several Brentwood neighborhoods have HOAs, and some (Summerset and Trilogy at the Vineyards) are 55+ communities. Underground drains rarely need approval, but visible grates, emitters, or rock strips in a front yard may; check the CC&Rs.
- Shadow Lakes
- Deer Ridge
- Brentwood Hills
- Garin Ranch
- Apple Hill Estates
- Rose Garden
- Summerset
- Trilogy at the Vineyards
- and the rest of Brentwood
Also Discovery Bay, Byron and Knightsen. Choose "Other nearby" on the form or just call.
Drainage guides
Straight answers before you call
French Drain Pros, Cons and Alternatives
What a French drain does well, the ways it disappoints, why some fail within a few years, and the cheaper fixes that solve the same problem in many yards.
6 min readHow a French Drain Is Installed
The build, step by step: utility marking, trench depth and slope, fabric, gravel and pipe, the outlet, cleanouts, and how to spot a corner being cut.
7 min read
Check any contractor, including one you find here
- Ask for the contractor's CSLB license number and look it up at cslb.ca.gov. The CSLB site also explains when a California contractor license is required.
- Get the quote in writing: the length and depth of each drain, the pipe and gravel, filter fabric, where the outlet is, and how the yard will be restored.
- Be wary of large deposits or cash-only terms. Ask who marks utilities through 811 and who handles any permit the city requires.
- Ask the contractor to show you the route and the fall from the farthest inlet to the outlet, and what warranty covers the work.
This site is an independent referral service, not a contractor. Your request goes to an independent local drainage contractor, who gives the quote and does the work. How this works
Yard drainage questions
Who do I call for yard drainage?
A drainage contractor or a landscape contractor who does drainage work. Plumbers mostly handle pipes inside the house and sewer lines. You can call the number on this page or send a request, and it goes to an independent local drainage contractor.
How much does it cost to have someone put in a French drain?
National guides put yard French drains at about $10–$50 per linear foot (HomeGuide 2026, Angi 2026), and a Bay Area contractor's 2026 guide quotes $35–$90 per foot locally, with most local projects between $3,500 and $13,500. See the cost guide.
What are the downsides of a French drain?
It doesn't fix roof water or a yard sloping toward the house, it digs up the yard, and it can clog in clay soil if filter fabric is skipped. It also needs a working outlet. See French drain pros, cons and alternatives.
What can I do instead of a French drain?
Depending on the cause: downspout lines, regrading near the house, a swale, a catch basin, a channel drain, or a dry well. The standing water guide matches each symptom to a fix.
Which cities do you serve?
Brentwood is the primary service area, plus Oakley and Antioch, and nearby Discovery Bay, Byron, and Knightsen. See all service areas.
Are you a drainage contractor?
No. This site is an independent referral service. When you call or send a request, it goes to an independent local drainage contractor who serves your area. The contractor provides the quote and does the work. Ask for their license number and verify it at cslb.ca.gov.
Talk to a local drainage pro
Ready to stop fighting the water every winter?
Call now or send a 30-second request. You'll be connected with an independent local drainage contractor for a quote.