Apartment and Multi-Unit Water Damage
Leaks that move between stacked and side-by-side units.
Unit-to-unit leaksSanta Monica service
A lot of Santa Monica lives in older small apartment buildings. So a leak in one unit is very often a problem in the unit below too.
24/7 emergency line
(323) 709-0141Quick answer
We handle water damage in Santa Monica apartments, condos and houses, including leaks that travel from one unit to the next, shower and roof leaks, and mold. Crews come from our Downtown Los Angeles office at any hour, and in buildings we keep a separate record for every unit the water reached.
Santa Monica
In a building, water rarely stays where it starts. A failed supply line upstairs becomes a stained ceiling downstairs. A shower pan leak can show up in a neighbor's closet. That means more than one tenant, an owner and sometimes two insurers looking at the same leak.
We read every unit the water could have reached, above, below and beside, and keep the photos and moisture readings separate so each party sees what applies to them. For owners and boards, our condo and HOA leak guide explains who usually repairs what.
Santa Monica
Santa Monica has 27,589 rent-controlled apartments, according to the Rent Control Board's 2025 report, and rent control only covers buildings put up before 1979. Earlier reports found nine in ten of those units sit in small buildings of fewer than 15 units. Decades-old supply lines, shower pans and roofs over shared walls are why so many of our Santa Monica calls involve more than one unit.

Common calls
Leaks that move between stacked and side-by-side units.
Unit-to-unit leaksShower pans and valves leaking into the unit below.
Shower leak damageStorm water through older roofs into top-floor units.
Top-floor ceiling leaksTesting when a musty smell follows a leak.
Mold inspectionShops and offices dried around business hours.
Commercial water damageCracked risers and water after shaking in older buildings.
Quake damage cleanupHow it works here
Call and tell the dispatcher your unit, whether water is coming from above or from your own unit, and whether the manager knows. If the source is upstairs, the manager needs to reach that unit to stop it.
The crew extracts water, reads every affected unit, removes only what cannot dry and sets equipment, keeping a separate dated record for each unit, the common areas and the owner.
Nearby
County
Los Angeles County coverageLos Angeles County
Malibu fire and water damageLos Angeles County
Torrance serviceFAQ
Call the manager to stop it at the source, protect your things, and call us so the damage is documented.
Yes. Each party gets the records that apply to their unit or the building.
Usually, for clean water. Contaminated water or a lost bathroom can change that.
Yes, with separate records for the unit, common areas and neighbors.
Dispatch gives a real window when you call, based on traffic at that hour.
Call the 24/7 line and we will document every unit it reached.
24/7 emergency line
(323) 709-0141The West Coast Builders
153 Japanese Village Plaza Mall, Los Angeles, CA 90012