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A contractor carrying a dehumidifier toward a basement entrance, the van open on the drive behind.

Serving San Jose

Groundwater & Basement Water Intrusion in San Jose, CA

Basement seepage, failed sumps and water through the slab are extracted and dried, and the path from the ground is found so the floor stays dry next season. The path from the ground is named first: through the wall, up through the slab, back through a drain, or from a sump that stopped. The space is extracted and dried, with the porous materials the water touched removed, and the delivery is addressed, because a dried floor only stays dry if the water stops arriving.

No obligation: the assessment comes before any scope

Often needed alongside

  • Structural Drying & Dehumidification

    Sealed air movers and dehumidifiers bring framing, subfloor and drywall back to a measured dry standard, with daily readings logged from inside the material.

  • Emergency Water Extraction

    Standing water is pumped and extracted around the clock, before it climbs the walls and soaks the subfloor. Same-day response where coverage allows.

  • Mold Inspection & Testing

    An independent assessor confirms whether the assembly that got wet is actually dry, whether growth started while it was not, and how far it reaches.

A homeowner and a contractor at the door discussing a basement that takes water every wet season.
What the inspection turned up, explained at the door.

Frequently asked questions

What is added when a second unit goes in?

A full set of services across the garden. Water, drainage and power are trenched from the house or the street to the back of the lot, and the new dwelling has its own kitchen and bathroom, so there is plumbing where there was lawn.

Why does the trench matter?

Because backfilled ground is looser than what surrounds it. A trench running from the street or the house to the back of the lot is a permeable line through otherwise settled soil, and winter rain finds it and follows it.

Where is the shutoff for the second unit?

Frequently nowhere obvious, which is worth establishing before it matters. Some installations put a valve at the branch and some do not, so a leak in the back unit may mean shutting off the whole property to stop it. A valve at the branch costs very little at the time of the build and a great deal to retrofit.

The same questions, in context, on the San Jose city page.

Need groundwater & basement intrusion in San Jose now?

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