Tucson yards often sit on caliche or compacted clay that sheds water instead of absorbing it. During summer monsoons, runoff can collect against stucco foundations and older concrete slabs common in east-side neighborhoods like those near 22nd Street. A proper drainage system starts with a perforated pipe bedded in gravel, sloped at least one percent, and tied into a daylight outlet or dry well sized for the lot. We also check for existing irrigation lines before any trenching so we do not cut sprinkler laterals already in place.
Many homes built before 1990 in the Tucson area have minimal original grading and downspouts that empty directly onto flat ground. Adding a French drain along the rear or side yard intercepts sheet flow before it reaches the house. Where space is tight we install a catch basin with a debris trap and run solid pipe to the street or an approved retention area. Every installation includes a cleanout at the high end so the line can be flushed after heavy sediment events common after dust storms.
Pima County rules require that new drainage not increase flow onto neighboring lots. We verify outlet locations against recorded easements and keep finished grade at least six inches below stucco weep screed. Backfill is compacted in lifts so the surface does not settle and create new low spots after the first monsoon season. Homeowners receive a simple diagram showing pipe depth and cleanout locations for future reference.
Technician insight
In Arizona the thing that catches most people out with yard drainage installation is how fast caliche stops a shovel and how monsoon water finds every seam you missed. Older east Tucson homes near 22nd Street often have irrigation lines only eight inches down, so we hand-dig the first foot on every trench.
Rear yard pooling after monsoons
Water collected against the back wall of a 1970s home off Broadway during every storm. We found the original grade sloped toward the foundation and an old irrigation line blocking natural flow. A 45-foot French drain with two catch basins moved water to the alley; the next monsoon left the patio dry.
Yard Drainage Installation Services We Offer
✓French Drain Installation
Perforated pipe and gravel trench that intercepts subsurface water before it reaches foundations on caliche lots.
✓Surface Catch Basin Systems
Grated basins connected to solid pipe that collect standing water in low spots common after monsoon downpours.
✓Yard Regrading and Sloping
Reshaping soil to direct surface flow away from the house and toward street or retention areas without affecting existing irrigation heads.
✓Downspout Extension and Drainage Tie-In
Extend downspouts underground to a French drain or pop-up emitter so roof water does not pool near stucco walls.
✓Dry Well Installation
Gravel-filled pits that accept runoff from drains when no street outlet is available on the property.
Yard Drainage Installation Cost in Arizona, Tucson
| Service | Typical Range | What Affects It |
|---|---|---|
| Basic French drain, 30–50 linear feet | $1,600–$2,800 | Includes gravel, pipe, and one cleanout; price rises with caliche excavation. |
| Catch basin with pipe run to street | $900–$1,600 | Depends on distance to outlet and whether asphalt cutting is required. |
| Full yard regrading | $1,200–$2,400 | Larger lots or those with existing mature landscaping cost more. |
| Dry well addition | $650–$1,100 | Size varies with soil percolation rate on the east side. |
Ranges are typical for Arizona, Tucson and confirmed with an exact written quote before any work starts.
How it works
- 1
Site Evaluation
Walk the yard during or after rain to locate actual flow paths and measure slope with a laser level.
- 2
Layout And Utility Check
Mark trench routes, locate irrigation and utility lines, and confirm outlet options with the homeowner.
- 3
Trenching And Pipe Placement
Excavate to proper depth, bed pipe in gravel, maintain consistent fall, and install cleanouts at high points.
- 4
Backfill And Final Grade
Compact soil in layers, restore surface to positive slope, and test flow with a hose before leaving the site.
Pricing
Most yard drainage projects in Tucson fall between $1,800 and $4,800 depending on length, depth, and outlet requirements.