How a scrape-and-rebuild differs below grade
- Basement depth
- Often taller ceilings and deeper excavation than the bungalow it replaced
- Drainage
- Perimeter drain tile and a sump pit are common, so the house depends on a pump
- Roof area
- Larger roofs on the same narrow lot send more water to small side yards
- Finishes
- Basements are often finished at construction, with bathrooms, wet bars and media rooms
- Neighbors
- Older houses on either side may sit lower or drain differently
Why a new house can still leak
When an older home is torn down, the new foundation usually goes deeper and wider, and the builder installs drain tile around the footings that leads to a sump pit. That system works well as long as the pump runs, the discharge line stays clear, and the water it pumps out does not cycle straight back toward the foundation. On a narrow Wash Park lot, the discharge often ends a few feet from the house or a neighbor's wall, and in winter the line can freeze.
Backfill around a new foundation also settles for several years. If the grade was set to slope away at completion, it may flatten or reverse as the soil compacts, sending roof and lawn water toward the walls. Window wells that were set correctly can end up slightly low.
Inside, new construction brings plumbing in places a bungalow never had it: a wet bar in the basement, a laundry room on the second floor, a steam shower, a refrigerator with an ice maker in a basement kitchen. Each is a supply line or drain that can fail behind a finished wall.
Sorting out where the water came from
- IfWater appears along the base of an outside wall after heavy rainCheck the sump pump, the discharge line and the grading along that side before anything else.
- IfThe sump pit is full and the pump is silentCheck its breaker or GFCI outlet; if it has failed, a temporary pump or professional extraction may be needed fast.
- IfWater shows up under a basement bar or kitchenetteLook for a failed supply line, ice maker connection or dishwasher drain.
- IfA ceiling stain sits under the upstairs laundryShut off the washer valves and check the drain pan and hoses.
- IfThe home is still within the builder's coverage periodReport the issue to the builder in writing promptly, with photos, while still drying the space to prevent further damage.
Habits for owners of newer Wash Park homes
- Test the sump pump each spring by pouring water into the pit until it switches on.
- Ask about a battery backup or a water-powered backup pump if the basement is finished.
- Extend the discharge line away from the foundation and away from your neighbor's property line.
- Know where the shutoffs are for every fixture added in the basement and upstairs laundry.
- Keep the builder's plans and the drain tile layout with your home records.
Common questions
Is it the builder's problem or my insurer's?
It can be both or neither. Builder coverage terms vary and often address defects rather than the resulting water damage, while homeowners policies typically cover sudden accidental leaks and exclude gradual seepage. Read both documents and keep each party informed.
General information for Washington Park, not a quote or professional advice. In an emergency, call 911.