# French Drain Installation Los Angeles | Ridgeline > French drain installation in Los Angeles by a licensed contractor. Dry wells, channel drains, hillside grading - $3,500-$25K. Call (626) 469-5822. URL: https://ridgelineoutdoorliving.com/yard-drainage/ ![Yard Drainage Solutions services in Greater Los Angeles](/images/misc/crew-installing-a-french-drain-with-gravel-and-geo.webp) Service · Drainage # French Drain Installation & Yard Drainage in Los Angeles French drains, dry wells, channel drains, and hillside grading to solve flooding and runoff. Schedule a Consultation [/contact/ →](/contact/) Call (626) 469-5822 [tel:+1-626-469-5822 →](tel:+1-626-469-5822) ★ ★ ★ ★ ★ 5.0 · Google Reviews 20+ years in business CSLB Licensed, Bonded & Insured Workmanship Warranty Pasadena B&S / LADBS Permits Handled Common Frustrations ## Does your situation sound familiar? These are the most common problems homeowners bring to us when they need drainage work done right. Standing water that sits in the same spot for three or four days after any significant rain Hillside runoff that channels straight across the patio and puddles at the house foundation Downspout discharge that pools near the perimeter wall and has started staining the stucco A previous contractor who said the drainage was 'probably fine' - and it clearly is not ## About Our Yard Drainage Solutions Service in Los Angeles Have you noticed giant puddles forming in your yard after a heavy storm? Those soggy spots usually point to a hidden grading issue that can threaten your foundation, crawl space, and retaining walls over time. Ridgeline Outdoor Living has been solving drainage problems across Los Angeles since 2004. Our licensed team installs French drains, foundation drains, and complete yard drainage systems that protect your property and conserve water. Let’s walk through the exact steps together. ## What Causes Standing Water in Your Yard Standing water often looks like a simple downspout problem. The truth is usually a lot more complicated. We start every project with a thorough site survey to find the real culprit. California weather has become incredibly unpredictable. Recent atmospheric rivers in 2024 and 2025 dumped up to 10 inches of rain in a matter of days, according to the National Weather Service. Our experts look at how that massive volume of water moves across your property, whether you own a flat-lot ranch home in Burbank or a steep hillside property in the San Gabriel Valley foothills. A good survey covers a few critical areas. - Soil type and absorption rates - Natural slope and grading - Existing downspout locations - Hardscape runoff areas We engineer the right combination of French drains, dry wells, channel drains, trench drains, and re-grading to move water safely. Each system is designed to discharge into an approved storm drain or on-site collection point, keeping water from dumping onto your neighbor’s property. You can even direct that runoff into dry wells to help recharge the local aquifer. Every system we build is sized to handle the worst winter storms while conserving water year-round. ## Why Most French Drain Installations Fail Drainage fails almost always in the exact same ways. Many contractors use undersized pipes, skip the geotextile fabric entirely, or fail to slope the trench toward a proper discharge point. We see missing edge restraints at hardscapes and discharge points that just become new low spots in the yard. A cheap corrugated plastic pipe is a very common mistake. These flimsy black tubes often crush under heavy soil or clog with roots after just 7 to 15 years. Ridgeline Outdoor Living’s installations follow a careful, proven checklist to prevent these failures. Rigid Schedule 40 PVC pipe is the superior choice for long-term reliability. This thick white pipe features a smooth interior that stops debris from building up. ### Essential Components of a Lasting Drain Every successful French drain relies on specific layers. | Component | Purpose | Professional Standard | | --- | --- | --- | | Pipe Material | Carries water away | Rigid Schedule 40 PVC | | Filter Fabric | Blocks silt and roots | Non-woven 4oz geotextile | | Gravel Envelope | Allows water to enter pipe | Washed 3/4-inch crushed stone | We wrap the perforated pipe in a non-woven 4oz filter fabric inside a graded gravel envelope. The system is sized to handle actual storm volumes. Standard yard drains sit 8 to 12 inches deep, while foundation drains protecting a crawl space or slab perimeter may run 2 to 4 feet down. This careful planning ensures the discharge can handle the worst-case event without backing up into your home. Our crew expects a properly installed PVC system to last over 30 years in tough Southern California soils. | Feature | Typical Provider | Ridgeline Outdoor Living | | --- | --- | --- | | Pipe Material | Corrugated plastic | Rigid Schedule 40 PVC | | Filter Fabric | Often skipped | Non-woven 4oz geotextile on every install | | Licensing | Varies | Licensed, bonded, and insured (CA contractor) | | Warranty | None or limited | Workmanship warranty included | ## Sub-Surface Drainage for Hillside Properties Hillside lots along the San Gabriel Mountains require a very specific approach to water management. These steep single-family properties are extremely common in La Cañada Flintridge [/locations/la-canada-flintridge/ →](/locations/la-canada-flintridge/) , landscaping in Glendale [/locations/glendale/ →](/locations/glendale/) , and the landscaping in Pasadena [/locations/pasadena/ →](/locations/pasadena/) foothills. The Ridgeline team knows that drainage and retaining wall work [/retaining-walls-hillside/ →](/retaining-walls-hillside/) are completely inseparable in these areas. Trapped water creates hydrostatic pressure. This simply means the sheer weight of the trapped water pushes hard against the back of the wall. Our hillside strategy involves sub-surface drainage directly behind the walls. You will also see weep holes drilled through the face and scuppers integrated with the hardscape. ### Top Native Plants for Hillside Stability A bare slope is highly vulnerable to mudslides. We strongly recommend planting drought-tolerant California native plants to knit the upper soil layer together. - **Coyote Brush (Baccharis pilularis):** Spreads low and handles lean soils perfectly. - **California Lilac (Ceanothus):** A fast-growing shrub with deep roots. - **California Buckwheat:** Provides excellent coverage without needing extra summer watering. These plants keep the surface completely stable. Our local ecosystems benefit from these native additions too. ## Regrading and Permeable Paver Solutions Sometimes a site needs more grading than just pipe drainage. When the project requires a full surface correction, we will tell you upfront. Regrading changes the physical shape of the land to direct water away from your foundation naturally. We frequently pair this grading work with a permeable paver replacement. Standard concrete driveways create massive amounts of immediate, contaminated runoff during rainstorms. Our favorite solution for drought-conscious homeowners is a system like Angelus Block permeable pavers. These smart surfaces offer several environmental benefits. - Wider joints filled with pea gravel - Elimination of fine sand to prevent clogging - Immediate absorption of heavy rainfall - Natural filtration of street pollutants We install them over a deep base of crushed angular gravel. This open-graded base acts as a giant sponge. Water absorbs right where it lands instead of flowing somewhere it shouldn’t. The base layer delays and filters the runoff. This process naturally recharges the local groundwater supply while giving you a beautiful patio that actively helps the environment. ## Schedule Your Drainage Consultation Today Protecting your home from water damage does not have to be stressful. Drainage projects in 2026 typically range from $3,500 to $25,000 depending on scope, and the right system will keep your property dry for decades. We are ready to assess your lot and design a system that actually works. Our crews serve Pasadena, Glendale, South Pasadena, Alhambra, and communities throughout greater Los Angeles. Reach out to schedule your site survey today. ![Ridgeline crew executing Yard Drainage Solutions on a Los Angeles project](/images/misc/detailed-inline-photo-of-a-ridgeline-crew-executin.webp) ## What's Included in Your Drainage Project - ●Site survey and grade assessment - ●French drains, dry wells, and channel drains - ●Hillside sub-surface drainage and weep holes - ●Downspout integration and discharge planning - ●Permeable hardscape options - ●Pre-permit drainage documentation ## How We Handle Drainage Projects 1. 01 · Site Survey We map grade, downspout outflows, hardscape runoff paths, and any existing drainage before recommending a fix. 2. 02 · Drainage Design A scoped plan combining French drains, channel drains, dry wells, and re-grading sized to actual storm volume. 3. 03 · Build Trenching, perforated pipe, gravel, geotextile, drain inlets, and discharge points - installed under or around hardscape as needed. 4. 04 · Confirm & Cleanup We test drainage with water flow, confirm grade, and restore the surface (paver patio, sod, planting) on top of the fix. Project Gallery ## Recent work across LA. A selection of Ridgeline yard drainage solutions projects from the last two years. ![Ridgeline crew installing a trenched French drain with gravel and geotextile in a Los Angeles yard](/images/features/trenched-french-drain-with-perforated-pipe-gravel-.webp) ![Channel drain installed along a paver patio edge at a Pasadena home](/images/features/channel-drain-integrated-along-a-paver-patio-edge-.webp) ![Sub-surface drainage with weep holes behind a CMU retaining wall on a Los Angeles hillside](/images/features/hillside-sub-surface-drainage-with-weep-holes-behi.webp) ![Dry well excavation sized for downspout discharge in Burbank](/images/features/dry-well-excavation-with-pipe-inlet-and-gravel-fil.webp) Client Feedback ## What clients say about our drainage work. ★ ★ ★ ★ ★ > "We had standing water in our Glendale backyard for years. Ridgeline diagnosed it as a grade and sub-surface drainage issue, installed French drains and a dry well, and rebuilt the patio on top. Solved." ★ ★ ★ ★ ★ > "The hillside runoff was pooling at our foundation every winter. Ridgeline ran a French drain behind the retaining wall and added a scupper to direct discharge to the street. No water near the house since." Common Questions ## Yard Drainage Solutions FAQs Do I need a French drain or a dry well? French drains move water laterally; dry wells absorb it into deeper soil. Most LA properties need a combination, sized to the downspout volume and the lot's grade. Can hillside runoff really be solved? Yes - with a combination of grading, sub-surface drainage behind walls, weep holes, and erosion-control planting. Hillside drainage is one of our specialties. Will drainage work void existing hardscape? We scope drainage to be installed under or beside existing hardscape where possible. When a patio sits on top of the problem, we lift, fix, and reset. Do I need a permit for drainage work? Most basic French drain work doesn't, but discharge to the public right-of-way or major regrades can. We confirm during the site visit and pull permits if needed. Can I install a French drain myself? Shallow surface drains are a possible weekend project, but foundation-depth systems require precise slope calculation, professional-grade geotextile, and proper discharge routing. Our crew uses laser levels and compaction equipment that most homeowners don't have access to. Does a French drain increase property value? Resolving standing water and foundation moisture issues removes a major red flag during home inspections. A properly installed drainage system protects structural integrity and makes your property more attractive to buyers. How deep should a French drain be installed? Surface water issues typically need 8 to 12 inches of depth. Foundation protection and crawl space drainage require trenches 2 to 4 feet deep. We determine the exact depth during the site survey based on your soil composition and water table. Related Services ## Often paired with drainage. ![Drought-Tolerant Landscape Design](/images/misc/mature-drought-tolerant-front-yard-ceanothus-manzani.webp) ### Drought-Tolerant Landscape Design Sustainable, water-wise landscape design built around California natives, hydrozoning, and hillside-friendly planting. View service → [Drought-Tolerant Landscape Design →](/drought-tolerant-landscaping/) ![Paver Patios & Hardscape Installation](/images/misc/custom-belgard-paver-patio-with-stone-seat-wall-in.webp) ### Paver Patios & Hardscape Installation Looking for paver installation in Los Angeles? ICPI-certified crew, Belgard & Angelus pavers, permit handling included. Call (626) 469-5822. View service → [Paver Patios & Hardscape Installation →](/paver-patios-hardscape/) ![Retaining Walls & Hillside Masonry](/images/misc/engineered-stone-faced-cmu-retaining-wall-terracin.webp) ### Retaining Walls & Hillside Masonry Engineered CMU, segmental, and poured-concrete retaining walls for LA hillsides - permitted, drained, warrantied. View service → [Retaining Walls & Hillside Masonry →](/retaining-walls-hillside/) ![](/images/hero/sweeping-twilight-shot-of-a-beverly-hills-yard-wit.webp) ## Schedule your drainage consultation. Free on-site visit, honest budget tier, and a phased path to the finished project. Schedule a Consultation [/contact/ →](/contact/) Call (626) 469-5822 [tel:+1-626-469-5822 →](tel:+1-626-469-5822)