A drainage system inspection should trace the entire water path, not stop at the first clogged grate. We examine where runoff enters, how French drains and surface drains connect, the condition and slope of accessible drainage pipe, and where the system discharges. In San Bernardino’s hot desert climate, long dry periods can hide defects until rain exposes a blocked outlet, crushed pipe, separated fitting, or poorly placed low point. Properties in Downtown San Bernardino and Del Rosa may also have older additions or landscaping changes that no longer match the original drainage layout. The goal is to distinguish a maintenance problem from a design failure before recommending excavation.
Terrain changes the inspection. Around Arrowhead and Verdemont, sloped lots can send runoff toward retaining walls, side yards, garages, or neighboring parcels if collection points are undersized or outlets are poorly located. Flatter sites in Muscoy or near central San Bernardino may hold water where finish grading has settled around patios and foundations. We check for sediment lines, erosion, mineral residue, damp transitions, root entry, and mismatched pipe materials. When access allows, flow testing or a drainage camera can help locate obstructions and damaged sections without opening the entire trench. Camera findings still need to be interpreted alongside surface elevations because a clear pipe cannot correct water that never reaches the inlet.
An inspection also considers whether a proposed repair could create a new problem downstream. French drains are intended to intercept subsurface moisture; they are not automatically the right answer for roof runoff, broad surface flow, or water trapped by hardscape. Discharge should not undermine a slope, saturate a retaining wall, obstruct a walkway, or redirect water onto an adjoining property. Connections to public systems, curb outlets, work in rights-of-way, and substantial grading may be subject to City of San Bernardino or San Bernardino County requirements, depending on the address and scope. Utility locations should be confirmed before excavation. We document accessible conditions and explain when a civil engineer, survey, permit review, or utility coordination is appropriate.
Technician insight
In San Bernardino, the thing that catches most people out with drainage inspections is assuming a dry yard means the buried system is working. After long hot, dry stretches, sediment and roots can remain unnoticed until runoff reaches the line, especially on sloped properties in Arrowhead and Verdemont. I also look closely at landscaping and hardscape changes because even a working French drain cannot collect water that has been redirected away from it.
Drainage System Inspection Services We Offer
✓French Drain Inspection
Checks accessible drain fabric, aggregate, perforated pipe, cleanouts, collection zones, and discharge points to determine whether the system is clogged, damaged, or poorly positioned.
✓Drainage Camera Inspection
Uses a camera where pipe diameter, access, and pipe condition permit, helping locate root intrusion, separated joints, sediment buildup, crushing, and standing water inside the line.
✓Drainage Pipe Locating
Traces accessible drainage pipe routes and likely junctions so repairs can target the problem area instead of requiring unnecessary trenching.
✓Yard Drain and Catch Basin Inspection
Evaluates grates, basins, connections, sediment accumulation, and surrounding grades to find why surface water bypasses or overwhelms collection points.
✓Downspout Drainage Inspection
Checks whether buried downspout lines are open, properly connected, and discharging away from foundations rather than feeding an overloaded French drain.
✓Drainage Outlet Inspection
Examines visible curb outlets, daylight points, pop-up emitters, and slope discharge areas for blockage, erosion, backfall, or unsafe water release.
✓Pre-Purchase Drainage Assessment
Reviews visible drainage conditions before a property purchase, with attention to staining, settlement, improvised piping, concealed outlets, and water paths around structures.
✓Post-Storm Drainage Diagnosis
Uses fresh ponding marks, sediment trails, erosion, and damp areas after rain to identify failures that can be difficult to reproduce during dry weather.
Drainage System Inspection Cost in San Bernardino, CA
| Service | Typical Range | What Affects It |
|---|---|---|
| Basic Residential Drainage Inspection | $175–$350 | Typical for a focused visual review of an accessible yard, inlets, grading, and visible discharge points. |
| Whole-Property Drainage Assessment | $300–$700 | Varies with lot size, slope, multiple drainage zones, retaining walls, and the number of structures or hardscape areas. |
| Drainage Camera Inspection | $250–$600 | Depends on cleanout access, pipe diameter, line length, bends, standing water, and whether the pipe is passable. |
| Drainage Pipe Locating And Mapping | $300–$750 | Cost rises when routes are unknown, lines branch, access is limited, or signal depth and site obstructions complicate locating. |
| Post-Storm Diagnostic Visit | $200–$500 | Scope depends on the number of active trouble spots and whether flow testing or follow-up inspection is required. |
Ranges are typical for San Bernardino, CA and confirmed with an exact written quote before any work starts.
How it works
- 1
Site History And Concern Review
We discuss where water appears, how long it remains, what happens during rain, and whether landscaping, patios, additions, or retaining walls have changed the flow pattern.
- 2
Surface And System Walkthrough
We follow runoff from roofs and high points through swales, basins, French drains, drainage pipe, and visible outlets while checking grades and signs of overflow or erosion.
- 3
Targeted Testing
Where appropriate and safe, we perform controlled flow testing, probe accessible cleanouts, or recommend camera work to narrow down blockages, damage, and low sections.
- 4
Findings And Repair Priorities
We explain what is working, what is uncertain or inaccessible, and whether cleaning, spot repair, regrading, outlet correction, or system redesign is the practical next step.
Pricing
Inspection cost depends on property size, access, the number of drain lines, whether the route is known, and whether camera inspection or locating is possible. San Bernardino properties with buried outlets, steep slopes, extensive hardscape, or no cleanouts generally require more diagnostic time; an on-site assessment is needed for a firm quote.