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Water Damage Restoration in Los Angeles, CA
February 2024 alone dropped 12.56 inches on downtown Los Angeles — the fourth-wettest February on record, and nearly a full year's average of 13.9 inches — while city crews responded to 520 mudslides. One call reaches vetted local water-damage pros, 24/7.
Active floods · Los Angeles
No active flood events near Los Angeles right now — see the live board.
Water damage in Los Angeles arrives in a handful of winter storms rather than steady rain: the area averages just 13.9 inches a year, yet 18 of its 88 federal disaster declarations have been for flooding or severe storms. Wildfire burn scars sharpen that risk. During the December 2025 atmospheric river, downtown recorded 3.27 inches in three days while the county ordered evacuations in burn-scar neighborhoods threatened by mud and debris flows.
Water & flood damage risk in Los Angeles
20
flood, hurricane & storm disasters declared in Los Angeles County (FEMA)
0"
rain forecast for Los Angeles in the next 24 hours (NWS)
Sources: FEMA OpenFEMA — federally-declared disaster history (county FIPS 06037) · NOAA NCEI — 1991–2020 Climate Normals (CULVER CITY, CA US)
Recent events in Los Angeles
Live from the DisasterStatus event tracker — Los Angeles is named in each event's affected area.
Why Los Angeles homes flood
Flood risk here is a story of engineering more than rainfall totals. Two Pacific storms between February 27 and March 3, 1938 dropped close to a year's precipitation in a few days, killed 113 to 115 people and destroyed 5,601 buildings across Los Angeles and the surrounding basin. The response — the Army Corps of Engineers lining roughly 278 miles of stream in concrete and raising the Sepulveda and Hansen dams — still dictates where water goes.
That system is not uniform. Through the Narrows, about river mile 33 to 22, channel capacity is worse than a 2 percent annual chance, and some stretches run as low as 25 percent — a one-in-four chance of flooding in any given year — with roughly 3,300 parcels in the resulting floodplain. Countywide, 404 critical facilities sit in the 100-year floodplain and 4,359 in the 500-year zone. Flood accounts for 10 of 88 federal disaster declarations on record.
Burn scars shift the math again. The county's flood control district treats a watershed as burned once more than 20 percent of it has burned within five years, emptying debris basins at 5 percent full rather than 25, and projects about 1.2 million cubic yards of sediment to remove each storm season for the next three to five years. For a homeowner, that means water damage arrives fast, often carrying mud and grit, so extraction, sediment removal and mold prevention overlap from day one — see the water damage restoration guide.
Flood repair permits & inspections
Two city agencies split flood repair review. The Department of Building and Safety issues the building and plumbing permits and inspects the work, while the Bureau of Engineering reviews anything inside the special flood hazard area mapped by the City Engineer under the Flood Hazard Management Ordinance. The dividing line is cost. Minor water-damage repair, under 10 percent of a residential building's replacement cost, clears as an express permit with no plan check. Once permit valuation passes 40 percent of a structure's market value, the Bureau of Engineering verifies the figure; at 50 percent the job becomes a substantial improvement and the structure must meet full floodplain standards.
| Permit / inspection | When it applies |
|---|---|
| LADBS Express Permit — water damage repair (P/GI 2026-003) | Express permits issue with no plan check. The current list covers water damage, termite damage, or dry rot repair costing less than 10 percent of a residential building's replacement cost; replacement of damaged framing members under the same 10 percent limit for single-family dwellings and duplexes; repair of water-damaged stairs in residential buildings under 10 percent of the stairs' replacement cost; and drywall replacement where no new walls are added, for single-family dwellings and duplexes only. Larger repairs fall back to counter or regular plan check. |
| LADBS Plumbing Permit | Required for any installation or modification of drainage systems, waste and vent systems, potable water piping, rainwater piping, and subsurface drainage piping — the categories a failed supply line, drain, or sewer lateral touches. Sewer alteration, repair, or replacement and water heater replacement sit on the express list; a sewer connection permit requires a Bureau of Engineering permit number. Plan check is not required where altered potable water branch lines serve fewer than 20 fixture units. |
| Bureau of Engineering — Flood Hazard Management Ordinance plan approval (Ordinance No. 186952) | Ordinance No. 186952, effective April 19, 2021, applies to all public and private development in the designated special flood hazard area and keeps the city in Regular Status under the National Flood Insurance Program. Building and Safety plan check flags a project inside the ordinance area and refers it to the Bureau of Engineering. For buildings predating the first Flood Insurance Rate Map (December 2, 1980), referral triggers when permit valuation exceeds 40 percent of market value; for later structures, all proposed work is referred regardless of valuation. |
| Substantial Damage and Substantial Improvement determination (FHMO) | The Bureau of Engineering determines market value and whether proposed work is a substantial improvement. Substantial damage means restoring a structure to its before-damaged condition would equal or exceed 50 percent of market value before the damage — damage of any origin, not only flooding. It also covers repetitive loss: flood-related damage on two occasions in a 10-year period averaging 25 percent or more of market value. Either finding sends the repair to new-building requirements. |
| LADBS inspection — Elevation Certificate, Flood Proofing Certificate, V-Zone Design Certificate | For work in the flood hazard area, inspectors verify during construction that the lowest floor slab is at or above the elevation on the approved design plan, and confirm that the Elevation Certificate, Flood Proofing Certificate, or Coastal High Hazard V-Zone Design Certificate is stamped and approved by the Bureau of Engineering. Parcels in the VE zone must file a V-Zone Design Certificate. Where a certificate of occupancy is required, inspection clears through the Automated Certificate of Occupancy System before it issues. |
Floodplain & drainage ordinances
- Flood Hazard Management Ordinance (Ordinance No. 186952), Section 5 — Substantial Improvement and Substantial Damage
- Repair work costing 50 percent or more of the structure's market value, or damage whose restoration cost reaches that share, is treated as a Substantial Improvement and must be brought into full floodplain compliance rather than simply patched back. Flood damage on two occasions in a 10-year period averaging 25 percent of market value counts as repetitive loss and trips the same threshold. Market value means the depreciated assessed improvement value, not replacement cost.
- Flood Hazard Management Ordinance, Section 5.C.3.b — regulatory floodway encroachment
- Within an adopted regulatory floodway no fill, new construction, substantial improvement, or other development may proceed unless a registered civil engineer certifies that the work will not increase flood levels during the base flood discharge. A rebuild on a parcel backing a channel therefore needs that no-rise certification in hand before the permit is approved.
- Flood Hazard Management Ordinance, Sections 5.C.7(c) and 5.C.9(a) — mudflow and flood-related erosion hazard areas
- Parcels mapped in mudflow, mud-prone, or flood-related erosion hazard areas must submit reports by a licensed geologist or soils engineer to the LADBS Grading Section establishing the extent of exposure, the remedies proposed, and evidence that the repair will not aggravate the existing hazard. This is the provision that governs rebuilding after debris flows off a burn scar.
- LAMC Section 91.7013 — Erosion Control and Drainage Devices (Building Code Division 70, Grading, Excavations and Fills)
- Drainage that conforms to the code must be maintained both during and after construction, and paved interceptor terraces at least 8 feet wide are required on the face of cut and fill slopes at intervals no greater than 25 vertical feet, at a longitudinal slope between 5 and 12 percent. Hillside repairs where a failed slope drain or clogged terrace pushed water into the structure are corrected under this division.
Local water-damage notes
- Community Rating System — Class 7 (City of Los Angeles, Bureau of Engineering) — The city holds a Class 7 Community Rating System rating, so flood insurance policies for properties in a Special Flood Hazard Area within the city receive a 15% premium discount. The rating comes from the Bureau of Engineering's floodplain management work under the National Flood Insurance Program, and the discount applies at purchase or renewal — it is tied to the community's rating, not to any individual property's mitigation work.
- Los Angeles Fire Department Sandbag Program — Free ready-to-fill sandbags are available year-round at all LAFD neighborhood fire stations, up to 25 per household, with free sand at select seasonal locations. The department does not fill, deliver, install, or remove sandbags — residents pick up and fill them, using free sand where offered or local soil. Supplies at a given station can run out during high demand, so calling ahead is advised.
- LADWP water distribution system — main breaks — The Department of Water and Power averages about 3 to 4 water main breaks per day across a 7,340-mile distribution system, making utility-side pipe failure a routine source of residential water intrusion here rather than a rare event. The system's rate of 16.8 leaks per 100 miles is below the national average of 25 leaks per 100 miles. LADWP replaced 195,000 feet of mainline in fiscal year 21/22 and was on track to replace another 210,000 feet the following year.
Cleanup & recovery services nearby
- Los Angeles County Permanent Household Hazardous and E-Waste Collection Centers — Free county-run drop-off for paint, solvents, chemicals, batteries, fluorescent lights and electronics — two permanent sites (Antelope Valley Environmental Collection Center in Palmdale, EDCO Recycling & Transfer Center in Signal Hill), limit 15 gallons or 125 pounds per trip.
- The Board Up Company — Veteran-owned emergency board-up of windows and doors, roof tarping and glass repair since 1994, with roughly one-hour response across the San Fernando Valley and Westside — secures openings only and refers restoration work out.
- Metropolis Disposal — Family-owned roll-off dumpster rental since 1998 out of Van Nuys — 10, 25 and 40-yard bins on 7-day rentals with same-day delivery where available, serving the San Fernando Valley and the greater metro area.
- RDS Rivas Disposal Service — Locally owned hauler operating since 1986 — 10, 20-30 and 40-yard roll-off dumpsters for demolition and cleanup debris across the county, the city and the South Bay.
- Bay Cities Tree Preservation — ISA Certified Arborists with Tree Risk Assessment Qualification handling removals, risk assessments and protected-species permit compliance in the city, Malibu, Topanga and Pacific Palisades.
By the numbers
- Engineered Los Angeles River channel — About 36 miles are concrete-lined and 15 miles earthen; the U.S. Army Corps of Engineers and the county Flood Control District each maintain roughly half.
- 51 miles
- Safe Clean Water Program revenue per year — Measure W, passed by county voters in 2018, taxes properties that cause runoff pollution and has generated over $670 million for more than 100 water-supply and waterway projects.
- $285M
Other restoration services
Costs & local data
Water damage restoration cost, California disaster statistics