Slab Leak Water Damage
Hot water lines leaking under the slab.
Granada Hills slab leaksGranada Hills service
Granada Hills is mostly owner-occupied ranch houses on slabs, many built in the 1950s and 1960s, and the 1994 earthquake showed how much water its streets can carry.
24/7 emergency line
(323) 709-0141Quick answer
We handle slab leaks, burst pipes, water heater failures and storm runoff in Granada Hills homes. Crews come from our Little Tokyo office at any hour. Most houses here sit on slabs, so we map moisture through the concrete before deciding what flooring comes up.
Granada Hills
A slab hides water well. A leaking hot water line under the floor can spread beneath carpet and flooring for days. The first signs are a warm spot, a damp edge along a wall or a water bill that will not drop.
Garages are the other common source. Older tank water heaters and washer hoses fail there and push water under the wall into a family room or bedroom.
Granada Hills
In the January 17, 1994 Northridge earthquake, a gas main ruptured and caught fire on Balboa Boulevard in Granada Hills and burned several homes. At the same moment, a large water main beside it broke and turned the street into a river two to three feet deep. That is a rare event, but it shows how quickly a broken line can put water into a house, and why strapped water heaters and known shutoffs matter here.

Common calls
Hot water lines leaking under the slab.
Granada Hills slab leaksSupply lines failing in walls and ceilings.
Pipe failure dryingWater heaters and washers failing in garages.
Garage heater leaksCarpet and pad soaked over concrete floors.
Wet carpet on slabsBroken lines and water after shaking.
After the shaking stopsCondensate overflows from attic air handlers.
Attic AC overflowsHow it works here
Call and tell the dispatcher where the floor is wet or warm. If you suspect a slab leak, close the main valve until a plumber has found it.
The crew maps moisture across the slab and walls, lifts flooring only as far as the wet edge and dries the concrete with mats and dehumidifiers until it matches a dry reference.
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Woodland Hills restorationFAQ
Look for a warm spot, damp carpet with no plumbing nearby, or a meter that moves with everything off.
Only as far as the wet edge, unless matching needs more.
Close its cold supply, turn off its gas or power and call.
Yes. Close the main valve first, then call.
Dispatch gives a real arrival window when you call.
Call the 24/7 line and we will map it before anything comes up.
24/7 emergency line
(323) 709-0141The West Coast Builders
153 Japanese Village Plaza Mall, Los Angeles, CA 90012