French Drain Installation
Water finds the lowest path into a basement — a properly built French drain gives it a better one. Diagnosis first, then interior or exterior systems matched to how water actually enters your home.
Subsurface Drainage Systems
French drains intercept groundwater before it reaches your foundation. We install interior and exterior French drain systems with proper gravel, filter fabric, perforated pipe, and drainage to a sump or daylight outlet.
- Interior & exterior French drains
- Perforated pipe & gravel bed systems
- Filter fabric & sediment prevention
- Sump pump integration
- Downspout & surface water management
- Foundation drainage & grading
Serving Bergen County homeowners across Englewood, Tenafly, Fort Lee, Ridgewood, Paramus, Teaneck, Hackensack, Closter, Alpine, Cresskill, Demarest, Bergenfield, Fair Lawn, Glen Rock, and Oradell — plus every town in between. Our Hackensack basement build started with waterproofing and drainage before a single wall went up — that order is the point.
Do You Actually Need a French Drain?
A French drain is the right tool for specific water paths — not every wet basement. Here’s how we decide, before anyone quotes anything.
Signs a drain system fits
Water shows at the slab edge or cold joint after sustained rain, the perimeter of a finished basement keeps getting damp, or the water table pushes up seasonally. That’s collection work: an interior perimeter drain walking water to a sump.
Start with the cheap moves
Downspouts dumping at the foundation, grading that slopes toward the house, or surface pooling after storms often solve for less. Gutter and downspout work and yard drainage come first when the water source is above grade.
Why basements here get wet
Much of Bergen County sits on clay-heavy, slow-draining soil, and low-lying streets near the county’s rivers see seasonally high water tables. A nor’easter followed by a thaw keeps ground saturated for days — systems here get sized for that, not for average rainfall.
Interior, exterior, or yard
Interior perimeter systems suit finished basements and year-round control. Exterior excavation pairs with wall-side waterproofing when the foundation is already being exposed. Yard and curtain drains handle surface and roof water before it reaches the wall. The entry path picks the system — not the brochure.
Drain Your Property With Confidence
Linear-foot pricing, system types, and permit guidance from registered Bergen County contractors.
Interior vs Exterior Cost
French drain installation in NJ ranges from $30/LF for yard drains to $200/LF for exterior excavation systems. Most Bergen County basements solve with interior perimeter at $55–$95/LF.
- Interior perimeter drain + sump: $55–$95 per linear foot (typical full basement $5,000–$15,000).
- Exterior excavation system: $100–$200/LF ($10,000–$25,000+ typical).
- Yard / surface French drain: $30–$70/LF for landscape drainage.
- Sump pump + battery backup: $1,500–$5,500 installed.
- Crack sealing (urethane injection): $450–$900 per crack for active leaks.
- Permit fees (Bergen County 2026): $200–$700 for drain permits.
Planning a project like this? Get an estimate.
Interior Perimeter System
Interior perimeter drain is the most common Bergen County solution. Trench cut along inside of foundation wall, perforated pipe in gravel, graded to sump, discharged outside.
- Trench: 8–12" deep along perimeter; cut through concrete slab.
- Perforated pipe (4" PVC): laid in gravel, graded 1/8" per foot toward sump.
- Sump pit: sealed lid, cast-iron submersible pump.
- Discharge: gravity to daylight preferred; piped to dry well or curb where required.
- Slab patch: concrete poured flush; cure 3–7 days before finish work.
- Timeline: 3–6 days for average basement.
Planning a project like this? Get an estimate.
Exterior Excavation
Exterior excavation systems are for severe or structural cases: bowing walls, major cracking, or when combined with foundation repair. Most expensive; most disruptive; most thorough.
- Excavation depth: to footing level (typically 7–9 ft around foundation).
- Drain tile: perforated pipe at footing level in gravel bed.
- Waterproof membrane: rubberized asphalt, peel-and-stick, or dimple board on exterior wall.
- Drainage board: directs surface water down to drain tile.
- Backfill: free-draining gravel near foundation, soil above.
- Landscape restoration: $3,000–$15,000+ if patios, walks, or plantings removed.
Planning a project like this? Get an estimate.
Yard & Surface Drains
Yard / surface French drains address different problems: wet lawn, standing water, gutter discharge management. They're shallower and cheaper.
- Trench: 12–24" deep in problem areas.
- Geotextile fabric: wraps gravel to prevent clogging.
- Discharge: to storm drain, dry well, or lower-elevation daylight.
- Gutter extension drains: tie downspouts into buried drain system to move roof water away.
- Catch basins: grated inlets for specific problem spots.
- Dry wells: for properties without access to storm drain or daylight.
Planning a project like this? Get an estimate.
Sump Pump & Backup
Sump pumps fail. Battery backups run out. Bergen County storms correlate with power outages. Backup protection is strongly recommended for finished basements or homes with prior water intrusion.
- Primary pump (cast-iron submersible): $350–$900 installed.
- Battery backup system: $500–$1,200 installed; battery replacement every 4–6 years.
- Water-powered backup: uses municipal pressure; no battery; requires municipal water.
- Dual-pump setup: two pumps in one pit for redundancy; $1,800–$3,500.
- Alarm system: $50–$200 water sensor with phone alert.
- Maintenance: quarterly test; replace pump every 7–10 years even if working.
Planning a project like this? Get an estimate.
NJ Permits & Discharge
Drainage work in Bergen County typically requires building and sometimes plumbing permits. Discharge regulations restrict where sump water can go.
- Building permit: $200–$700 for interior drainage work.
- Plumbing permit: $100–$300 for sump discharge into plumbing system (uncommon).
- Discharge into sanitary sewer: prohibited in most Bergen County municipalities.
- Discharge to street / curb: typically allowed; review local code.
- Dry well installation: may require grading permit in some towns.
- Approval time: 1–4 weeks in Bergen County for interior work.
Planning a project like this? Get an estimate.
Pricing and timelines are planning ranges. Final cost and schedule depend on site conditions, access, structural requirements, materials, permit review, inspections, weather, material lead times, and scheduling availability.
Your French Drain Installation Process
Inspection
We inspect water-entry points, grading, sump conditions, discharge options, and foundation access.
Scope & plan
We finalize the system plan, materials, scope, and any permits or trade coordination required.
Repair or install
Crew executes the repair or installation with regular check-ins and daily cleanup.
Testing & cleanup
Testing, performance verification, and cleanup; punch-list closeout and documentation.
Frequently Asked Questions
Interior perimeter drain + sump (most common), exterior excavation systems, yard/surface drains, and sump pump installations with battery backup. Each solves a different problem.
Interior handles most Bergen County cases and costs half as much. Exterior is reserved for structural foundation damage or cases where interior has failed.
Only if moisture is present. A dry basement can be finished directly. Basements with active seepage need drainage installed first.
Every project uses a milestone payment schedule tied to agreed phases — set out in writing in your contract. Homeowners who want to finance work typically use third-party home-improvement lenders; we're happy to share the names of lenders other clients have used. Any financing arrangement is between the homeowner and the lender.
For most Bergen County residential projects, 3 to 8 weeks from contract signing to on-site start. Summer and early fall fill fastest. Drainage projects are usually scheduled after site review, layout planning, and material selection. Urgent active-water situations are handled through the water-damage response process.
No. Interior drainage work is noisy and dusty but doesn't require move-out. We contain dust and maintain access.
In Bergen County, yes. Storms and power outages correlate. A pump without backup during a major storm means a flooded basement. $500–$1,200 installed.
Gravity to daylight when possible. Curb or storm drain if available. Dry well as alternative. Sanitary sewer discharge is prohibited in most Bergen County municipalities.
Bergen Restoration provides written workmanship warranty terms with every contract. Manufacturer warranty coverage depends on the selected product, installation requirements, and manufacturer terms. Coverage is reviewed before you sign. If something isn't right within the warranty window, we come back and fix it.
All 70 Bergen County municipalities. Residential only.
Yes. Bergen Restoration is a registered New Jersey Home Improvement Contractor (NJHIC# 13VH08865500) with commercial general liability and workers’ compensation coverage; documentation available on request.
Related water services: Basement Waterproofing, Yard Drainage, Gutter Replacement & Downspout Systems, Water Damage Restoration
Get Your Estimate
Reach us by phone or email and tell us about your French drain installation project. We will follow up with the next best step for your home.
Commercial general liability and workers’ compensation coverage. Documentation available on request.
Let's Talk About Your Project
Tell us where the water shows up — we'll look at the whole path, discharge included, before we talk systems.