914 Basement Waterproofing and Repair in Harrison, NY
Harrison is a mid-century town: the typical home was built around 1962 and 68% pre-date 1980, with a median value just over $1 million. Several brooks and rivers run through it.
Basement contractors for Harrison
How we pick: we list up to six companies per page. Independent firms come first, then firms based outside Westchester, then franchise or network affiliates. Companies that name the town as served come before those that serve the whole county. Listings are free, not paid, and not an endorsement. Home improvement license status was looked up in the Westchester County consumer license search on Oct 26 to 27, 2026, plumber license status in the county trade license search on Oct 27, 2026, and NYS mold license status in the state Labor Department data set; each profile shows what we found.
AMHAC (All Makes Heating & Air Conditioning)
No rating collected yetSump pump installation and repair; plumbing, heating and air conditioning
Bombace Construction Co., Inc.
No rating collected yetYard drainage, curtain and French drains, dry wells, catch basins, sump pump installation, grading, retaining walls
De La Paz Masonry
No rating collected yetWaterproofing, French drains, sump pumps, masonry
F. La Rocca & Sons
No rating collected yetMasonry, drainage and waterproofing
Sundahl Waterproofing
No rating collected yetInterior and exterior waterproofing, drainage, sump pumps, foundation repair
Gregg Segnit Waterproofing
No rating collected yetBasement and foundation waterproofing, drainage, sump pumps
Services in Harrison
Housing in Harrison
| Place | Typical year built | Built before 1950 | Built before 1980 | Median home value |
|---|---|---|---|---|
| Harrison | 1962 | 26.1% | 67.7% | $1,010,700 |
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates (tables B25035, B25034, B25077), retrieved Oct 2026. Estimates carry a margin of error.
Flooding and water in Harrison
- Westchester County’s Long Island Sound watershed program lists this municipality in the watershed study areas for “Blind, Beaver Swamp and Brentwood Brooks; Milton and Port Chester Harbors”, “Mamaroneck and Sheldrake Rivers; Mamaroneck Harbor”, “Bronx River”. [source]
- The town code includes a flood damage prevention chapter. [source]
- Flood maps are address-specific. Check your own address on FEMA’s flood map service, and ask any contractor how they treat a high water table on your lot. [source]
Permit notes for Harrison
From the municipality’s own pages, retrieved Oct 2026. Rules change, so call the building department before work starts.
- The Building Department lists plumbing and excavation/regrading permits; land disturbance needs Engineering approval. Call 914-670-3050 to confirm your discharge location and permit before work starts. We did not find a sump-pump-specific ordinance. [source]
What basement work costs
| Job | Published range | Source |
|---|---|---|
| Typical interior drain system, 120 ft of wall (low / typical / high) | $3,041 / $7,095 / $12,163 | RenoVetted |
| Sump pump work, White Plains (low to high, midpoint about $1,574) | $840 to $3,673 | RenoVetted |
| Minor crack repairs and basic waterproofing, White Plains | $2,400 to $4,700 | HomeBlue |
| 8 piers or repair points, Yonkers (low / typical / high, modeled) | $4,223 / $10,136 / $16,893 | RenoVetted |
| Basement, partial (national) | $1,500 to $6,000 | HomeGuide |
| Per square foot, White Plains (low / typical / high, modeled) | $26 / $52 / $84 | RenoVetted |
| Whole-house filtration system, installed (national) | $850 to $5,400 | HomeGuide |
Most published Westchester figures are modeled estimates for White Plains or Yonkers, and national ranges where noted (water treatment figures are national). They are not bids for this town; Westchester quotes can run higher. See all costs and sources.
Homeowner guides
- Basement costs (2026)
- How to Check a Westchester Contractor's License Before You Sign
- Water in Basement After Heavy Rain
- Sump Pump Running Constantly
- Signs of a Wet Basement (and What Each One Means)
- Sump Pump vs. French Drain
- Mold in the Basement
- Fall Basement Prep Checklist for Westchester Homes
- Finishing a Basement in Westchester
- Private Well Water in Westchester
Nearby towns
Sources
- Westchester County Planning: Long Island Sound Watershed Program (watershed study areas by municipality)
- Town/Village of Harrison Code, Chapter 146: Flood Damage Prevention
- FEMA Flood Map Service Center (look up your own address)
- Town/Village of Harrison: Building Department
- U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, tables B25034, B25035, B25077 (via Census Reporter)
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