The invisible half of an outdoor remodel
Think of the patios in San Diego that nobody uses anymore. The one that puddles in the corner every February until the grout gives up. The one with a hairline crack that the owner first noticed the spring after the install and that has since learned to grow. The retaining wall that bulged over a single wet winter because the fill behind it had nowhere to drain. The side yard that runs a small creek for a day and a half every time a real storm lands. None of these properties started out broken. They were built by people who moved water as an afterthought — or didn’t move it at all — and the house paid for the oversight on a schedule nobody warned the owner about.
Drainage and grading is the piece of an outdoor remodel you never see and should never have to think about after year one. It is also the most-botched category in San Diego, for the simple reason that it is the first corner cut when a bid gets competitive. A trench cut two inches shallower, a slope dialed down from two percent to one, a discharge point “we’ll figure out later” — the savings show up in the proposal, and the failure shows up on the invoice for the patio, the wall, or the foundation three winters in.
The luxury of a properly built outdoor space is that water moves where it should, invisibly, and the ground underneath stays level, dry, and stable. We will not build a yard any other way. Every finish we set — every paver, every wall, every pool deck — is sitting on a drainage and grading plan that was drawn before the first line of hardscape was marked.
What our drainage work includes
A drainage and grading scope, for us, is a coordinated plan — not a single product bolted onto a problem.
Under one scope we handle:
- Surface drainage. Channel drains and trench systems, area drains at patio low points, and catch basins at yard collection points. This is the work that intercepts water on top of the ground before it ever has a chance to pool.
- Subsurface drainage. French drains, perforated pipe beds wrapped in geotextile fabric, and dry wells on properties where discharge to street or storm system is not available.
- Sump pump systems. Installed where gravity discharge is not possible — below-grade yards, low-slope lots, houses set into hillsides.
- Permeable hardscape. Paver systems that let water pass through the surface into an engineered base rather than sheeting it to the next low point. Integrated with our patios and hardscape and pool deck scopes.
- Roof-runoff capture and redirect. Downspouts tied into buried pipe and carried to a compliant discharge point rather than dumped against the foundation.
- Yard regrading and slope engineering. Cut and fill work that establishes the slopes the yard needs — always away from the house and always toward an appropriate place for the water to go.
Drainage also lives underneath our retaining wall work. Any wall we build is drained behind it; that is not an upgrade line in our proposal.
Our process
We run every drainage and grading scope through the same seven-chapter sequence. It is the reason our work holds.
The first conversation. Thirty minutes by phone or on your property. We ask what has gone wrong, what has been tried, and what the yard does during rain. We tell you honestly whether the problem is drainage, grading, hardscape failure, or all three — and what a real fix looks like.
The honest inspection — ideally during or after a storm. A dry yard lies about drainage. A wet one tells the truth. Where the timing allows, we walk the property during or immediately after a rain event so we can see water moving in real time. Where it does not, we simulate with a hose and read the ground. On dense-clay lots we run percolation tests; the soil tells us what subsurface systems will and will not work.
Topographic survey where the site calls for it. On sloped lots, large lots, or properties where cut/fill volume will trigger permit review, we survey before we design. Designing to an assumed grade is how drainage plans end up three inches off and a patio ends up puddling in a corner nobody predicted.
Grading plan with explicit slopes and discharge points. Every surface gets a slope called out on paper — minimum two percent away from the house on hardscape, minimum one percent on lawn and planter, steeper where the site demands. Every drain line gets a discharge point named, measured, and drawn. Water that has nowhere to go is not drained; it is stored.
Permit review. San Diego County and its cities trigger grading permits at defined cut/fill volumes, and coastal, hillside-overlay, and certain HOA jurisdictions add further review. We read the thresholds against your plan and handle the submission through San Diego County Planning & Development Services where required.
Drainage built first, finishes built on top. Every subsurface system — French drains, perforated pipe, catch basins, sump lines — goes in before any hardscape, wall, or planting. This is non-negotiable and it is why retrofitting drainage into a finished yard runs roughly three times the cost of doing it right the first time. Before we backfill a single trench, we run water through the system and watch it discharge. If it does not move the way the plan said it would, the trench stays open until it does.
Final grading and integration. The last inch of grade is set to the hardscape, the walls, and the planting. The seams between systems are where drainage quietly fails, and where we spend the most attention.
Ten months after completion, we come back for The 10-Month Walk-Through — every project, every client. Drainage honesty gets verified over the first San Diego winter. If something has moved, settled, or opened up, we handle it then. No invoice.
Materials and the systems we install
We install NDS channel drains, trench systems, catch basins, and area drains — the category standard for a reason, and what most jurisdictions expect to see on a plan. Subsurface work is built in SDR-35 four-inch pipe, wrapped and bedded in clean drain rock and geotextile fabric that keeps fines out of the system so the pipe still moves water in year ten. Sump pumps and discharge lines are spec’d to the volume and head of the specific site, not pulled off a shelf because they happened to be in the truck.
Where the design calls for permeable hardscape, we build on Belgard and Techo-Bloc permeable paver systems over engineered aggregate bases designed to handle the storm event the property actually sees — not a generic one.
The brand name stamped on the fitting matters less than the slope the installer built into the trench. A premium channel drain installed level is a planter. The hand that sets the system is the product.
Investment and what drives the number
A drainage and grading scope with San Diego Landscape Remodeling runs between $15,000 and $60,000 for the large majority of our work.
$15,000 is a modest, targeted system — regrading a problem side yard, a short French drain, a catch basin or two tied into an existing compliant discharge point. The failure is localized and the fix is localized.
$30,000 to $40,000 is a full yard drainage plan: multiple systems working together, proper regrading across the property, and discharge carried to a compliant location rather than the nearest low spot on the neighbor’s side of the fence.
$50,000 and above is the larger-lot work — significant cut/fill under permit, sump systems, permeable-hardscape integration across a full backyard footprint, roof-runoff capture systems tying in from every downspout, and coordination with concurrent hardscape or retaining work.
Cost drivers you should understand before the first conversation:
- Site area. Linear feet of trench and pipe scale directly with square footage.
- Existing slope — or the lack of it. Flat lots are harder than sloped ones; a yard with no natural fall requires engineered slope built in and, on some sites, a sump.
- Soil percolation. Dense clay soils do not absorb; they shed. Subsurface systems on clay look different from subsurface systems on decomposed granite.
- Discharge-point access. A compliant discharge to street, curb, or storm system that is forty feet away is a different number from one that is a hundred and sixty feet away through a retaining wall.
- Permit-trigger cut/fill volume. Crossing the grading-permit threshold adds drawings, review fees, and schedule.
- Sump requirement. Below-grade discharge adds pump, power, and a backup path.
- Integration with concurrent hardscape or retaining work. Drainage built inside a larger remodel is more efficient per dollar than drainage built alone.
- HOA, coastal overlay, and neighbor easement considerations. Water law in California does not permit sending runoff onto the neighbor’s lot; compliant routing matters.
Premium fair value, delivered with full founder access. That is the product.
Where we work
Drainage and grading benefits the hillside and low-slope properties most. We work across San Diego County and see the range — the granite lots and the heavy-clay lots, the low-elevation neighborhoods that collect and the hillside properties that send. Projects in Mount Helix and Poway routinely need hillside grading and engineered discharge; properties in Olivenhain carry both coastal overlay review and the large-lot cut/fill volumes that trigger permit work. Every city carries its own soil, permit, and HOA reality. We write each city page from what we see on the ground.
Frequently asked
Why does drainage matter this much?
Because every other element of your yard — the patio, the walls, the pool deck, the foundation of the house itself — is sitting on ground that water either stabilizes or destroys. Good drainage is a one-time investment that extends the life of everything around it. Bad drainage is a recurring repair bill that starts small and ends at the house’s footing.
What are the warning signs of a drainage problem?
Standing water forty-eight hours after a rain. Efflorescence — the white mineral bloom — on paver or stone. Settling or dips at the low side of a patio. Hairline cracks that widen across seasons. A retaining wall that weeps or bulges. Soggy soil against the foundation. Mildew or staining on the first foot of stucco. Any one of these is a signal; two or more is a scope.
Do we need a permit?
It depends on cut/fill volume, site location, and jurisdiction. San Diego County and each of its cities set grading-permit thresholds, and coastal, hillside-overlay, and floodplain jurisdictions add layers. You can start at the San Diego County permit portal. We read the thresholds against the plan and handle submission where a permit is required.
What about neighbor drainage law — can water be sent onto the neighbor’s lot?
No. California’s rule, in short form, is that you cannot collect and concentrate runoff and discharge it onto a neighboring property. Altered-flow claims are a real source of civil disputes. Our plans route water to compliant points — street, curb, storm drain, dry well, or an easement that legally allows it.
How do we handle a flat yard with no natural slope?
By engineering slope into the hardscape itself, routing surface water to catch basins or channel drains at designed low points, carrying it through buried pipe to a compliant discharge, and — where gravity runs out — installing a sump system with a backup path. Flat lots are not a drainage problem; they are a design problem with a known solution.
French drain vs. channel drain — which is right?
A channel drain handles surface water — sheet flow off hardscape, the patio at the bottom of a slope, the edge of a garage apron. A French drain handles subsurface water — saturated soil, groundwater, water that has already soaked in and needs somewhere to go. Many yards need both, on different parts of the property, for different reasons. A plan that answers “which one” with “either one” is not a plan.
Can you redirect roof runoff away from the foundation?
Yes. Downspouts get tied into buried SDR-35 pipe, carried under the hardscape and the planting, and discharged at a compliant point well away from the house. Roof runoff dumped at the footing is one of the quiet causes of foundation movement and stucco damage on older San Diego homes. It is one of the cheapest problems to fix during a remodel and one of the most expensive to fix after.
Workmanship warranty?
We warranty our workmanship for a minimum of one year, with material warranties extending longer per manufacturer. More importantly, The 10-Month Walk-Through is built into every project — ten months after completion, through a full San Diego winter, we return and walk the drainage with you. If something has moved, we handle it then. Especially relevant on drainage work, and especially after the first wet season. You can verify Mike’s active Class B general contractor standing any time through the CSLB license lookup.
Who do we actually talk to?
Gio or Mike. Direct-Founder Access is part of the product — not a marketing line. Every project is personally run by one of the founders. Our Field Lead runs the day-to-day on the ground. You have both cell phones from the first call.
Can you come out after a storm to see what’s actually happening?
Yes. That is often the start of the process. A yard in the rain tells the truth about where water goes, where it stops, and where the plan went wrong the last time. If you can catch us during the event, we catch more. If you call the morning after, the ground is still honest for a day. We will work around the weather to see it.
References available on request
We do not publish testimonials. On drainage and grading especially, the proof is the yard after a wet winter — not a cropped quote. During discovery we are glad to speak to references and walk you past completed drainage work in person so you can see the grade the way it lives, not the way it photographs.
When you are ready
If you have a yard that puddles, a wall that weeps, a side yard that becomes a creek, or a remodel that has to be built on ground you can trust — we would like to see the property. A first conversation is thirty minutes, on-site where it helps, and there is no cost to begin. We will listen, we will tell you what we see, and we will tell you honestly what it will take to put the water back where it belongs.
Licensed and insured general contractor, operating under Mike’s Class B license — CSLB #1139785.
