The Short Answer
A full French drain and sump pump system for a Troy basement typically runs $2,800 to $6,500 when the two are installed together. A French drain alone runs $500 to $18,000 depending on whether it’s an interior or exterior run, and a standalone sump pump installation averages around $1,400 (range $500–$4,000). These are 2026 national benchmark ranges from Angi and This Old House — in Troy specifically, the housing stock itself often decides which end of that range you land on, for reasons that are unique to this city. Here’s what actually drives the price.
Why Troy’s Housing Stock Changes the Calculation
Troy’s Central Troy Historic District and Washington Park Historic District — both listed on the National Register of Historic Places — are dense with attached brick rowhouses built in the 1870s–1890s, sharing party walls with the houses on either side. That construction style physically rules out a full-perimeter exterior excavation in a lot of cases: there’s no side yard to dig in, and the foundation wall is shared or immediately adjacent to the neighbor’s. For these homes, waterproofing work tends to get pushed toward the interior-drain end of the price range (typically $40–$100 per linear foot) rather than the cheaper-per-foot exterior option, simply because there’s nowhere to excavate.
Troy also sits on a series of terraces rising from the Hudson River up toward the Mount Ida escarpment. Homes on the lower terraces can pick up extra hydrostatic pressure from runoff moving downhill from the blocks above — worth flagging to whoever inspects your basement, since it can affect whether a sump pump alone is enough or whether a full French drain system is the safer call. We cover the same detached-vs-rowhouse, foundation-type distinction in more general terms in our French drain vs. sump pump comparison.
If your home is in one of Troy’s historic districts, exterior work on or near the foundation may also need a review from the city’s Historic District and Landmark Review Commission before it starts — the same local approval layer we outline for exterior painting in our Troy painting & remodeling cost guide. It’s worth checking before scheduling exterior excavation, not after.
French Drain Cost: Interior vs. Exterior
| Type | Cost per linear foot | Typical total | Best fit |
|---|---|---|---|
| Interior French drain | $40–$100 | $5,000–$18,000 (full basement) | Attached rowhouses, shared/adjacent party walls, no excavation access |
| Exterior French drain | $10–$50 | $500–$10,000 | Detached homes with excavation access around the foundation |
| National average, all jobs | — | $9,250 (range $500–$18,000) | — |
Sump Pump Installation Cost
A sump pump is the mechanical piece that moves collected water out and away from the foundation once a French drain (or gravity) delivers it to the basin. Installation averages $1,400, with a typical range of $500 to $4,000:
- Pedestal pumps — $80 to $800, with a motor life up to 30 years. The motor sits above the basin, out of the water, which is why they tend to last longer.
- Submersible pumps — $90 to $1,000, with a typical lifespan of 5 to 15 years. Quieter and more powerful, but the motor runs submerged in the basin.
- Sump pump added to an existing drain system — $500 to $2,000, since the collection piece is already in place.
- Battery backup — adds roughly $150 to $250, and is worth budgeting for given how often storms that flood basements also knock out power. See our battery backup vs. generator comparison.
What a Combined French Drain + Sump Pump System Costs
Most real installations aren’t a choice between a French drain OR a sump pump — a properly built interior drainage system is a French drain that feeds a sump pump. Installed together as a single system, that typically runs $2,800 to $6,500, less than pricing the two separately because the excavation, basin, and labor overlap.
A few things that can change that number in Troy specifically:
- Cutting through an existing concrete slab for an interior system — $2,500 to $5,000, on top of the drain and pump cost, common in rowhouse basements where the slab was poured decades ago with no drainage channel built in.
- Historic district review — no direct fee in most cases, but can add lead time if the work is visible from the exterior; budget extra schedule time, not necessarily extra dollars.
- Permits — $50 to $200, depending on scope.
- Inspection — $100 to $300. This is the step that determines whether you need the full system or just the surface sealing covered in our basement waterproofing cost guide.
Why Timing Matters
Exterior excavation work — an exterior French drain, foundation-adjacent drainage — needs to happen before the ground freezes, typically a six-to-eight-week window starting in mid-September in the Capital Region. For Troy’s rowhouses where interior work is the only option anyway, that deadline doesn’t apply the same way — interior systems can be scheduled through the winter. Need excavation for an exterior drain on a detached property? VividPro’s own excavator and operator rental handles that side of the job locally.
French Drain & Sump Pump Cost FAQs
Can homes in Troy’s historic districts get exterior French drains?
Sometimes, but many of Troy’s attached rowhouses in the Central Troy and Washington Park Historic Districts share party walls with no side-yard access, which rules out full exterior excavation. An interior French drain is often the practical option for these homes.
Does waterproofing work in Troy’s historic districts need approval?
Exterior work visible from the street may need a review from Troy’s Historic District and Landmark Review Commission. Interior drainage work generally doesn’t, since it isn’t visible from outside. Check before scheduling exterior excavation.
How much does a French drain and sump pump system cost in Troy, NY?
Installed together as one system, a French drain and sump pump typically costs $2,800 to $6,500. A French drain alone runs $500 to $18,000 depending on interior vs. exterior placement, and a standalone sump pump averages $1,400.
How long does installation take?
An interior system in a basement that’s already open typically takes 1 to 3 days. If an existing slab needs to be cut, or the job needs historic-district review, add time for review and for the cut-and-pour work itself.
Does VividPro service Troy?
Yes — VividPro Painters & Remodeling handles basement waterproofing, French drains, and sump pump systems across Troy and the wider Capital Region.
Get a Real Number for Your Basement
Every basement is different, and the only way to get an accurate number is a real inspection — not a guess based on square footage alone. VividPro Painters & Remodeling handles basement waterproofing across Troy, Schenectady, Albany, and the Capital Region, and we’ll tell you honestly whether your basement needs a French drain, a sump pump, both, or just surface sealing before recommending anything.