06/18/2026
Are you dealing with a flooded yard because of your neighbor's new hardscaping?
Adding a new patio or driveway means adding impervious surfaces that no longer absorb rainwater. That water has to go to the lowest nearby point, which is frequently your yard.
In Montgomery County, stormwater management regulations state that runoff from new impervious surfaces must be managed on the property where they were created. If a neighbor installs a patio without proper drainage, they can violate county code and be held responsible for downstream damage.
Before arguing about fault or calling a lawyer, you need engineering data to document the actual water flow. Here is how we solve it:
- We evaluate the grade change and map the runoff source.
- We install a dry well system along the property line to intercept the water before it crosses into your yard.
- Surface water is routed into a buried infiltration chamber where it slowly disperses into the subsoil.
A dry well and catch basin system typically costs $4K to $10K for a DMV lot. This one-time fix is much cheaper than foundation repairs, which start at $25K, or lengthy legal disputes.
Send us a direct message with your address so we can design a solution that protects your property!