Should the battery backup be quoted or optional?

Quote it as an option with the price shown, and note that basements flood during storms — which is exactly when power fails. A customer who declines it should decline in writing, because the failure it prevents is the one they'll call you about.

How do I handle exterior drainage in the estimate?

Quote it separately or exclude it explicitly. A large share of basement water comes from gutters, downspouts, and grade — an interior system manages water that's already arriving, and saying so protects your warranty and often sells a second job.

What should the warranty cover?

The installed system — the drain, sump, and the walls it serves — for a stated term, excluding new sources, plumbing failures, and areas not treated. A blanket 'dry basement' guarantee on a house you don't control is unbounded, and it's how waterproofers end up doing free work for years.

Basement Waterproofing Estimate Template (Free)

Essential line items on a basement waterproofing estimate

A basement waterproofing estimate protects your business profitability and protects property owners by detailing linear footage, concrete trenching, sump pit mechanics, and explicit warranty limits:

Contractor Credentials & Licensing: Business name, physical address, state specialty contractor license, and proof of liability insurance.
Scope & Affected Wall Identification: Specific wall names (e.g., North & West foundation walls) and exact measured linear footage (e.g., 68 linear feet).
Sub-Floor Interior Drainage System: Per-linear-foot costs for jackhammering concrete slab, excavating trench to footing level, laying perforated drainage pipe, surrounding with washed gravel, and re-concreting flush with floor.
Sump Basin & Discharge Mechanics: Dual-pump pit installation, primary AC pump, secondary DC battery backup pump, check valves, and exterior PVC discharge line routing.
Wall Moisture Barrier & Vapor Protection: Dimple board, heavy-duty 12-mil or 20-mil wall vapor barrier, and rim joist insulation.
Epoxy / Polyurethane Crack Injection: Individual line items for foundation wall crack prep, injection ports, and high-pressure expanding foam sealants.
Payment Schedule & System Warranty: Milestone payment draws and written warranty bounds clearly defining covered system components vs. excluded site conditions.

Free Basement Waterproofing Estimate Text Template

Copy and paste the template below to build professional, legally sound estimates:

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                       BASEMENT WATERPROOFING ESTIMATE
================================================================================
CONTRACTOR INFO:                           ESTIMATE DETAILS:
[Your Waterproofing Business Name]         Estimate Number: BWE-2026-0914
[State Specialty Contractor License #]     Date: August 3, 2026
[Phone & Billing Email Address]            Valid Through: 30 Days From Date

CLIENT & PROPERTY LOCATION:
Client Name: [Homeowner / Landlord Name]   Phone: [555-0199]
Property Address: [789 Elm Street, City, State ZIP]
Target Scope: North & West Basement Foundation Walls (64 Linear Feet)

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LINE ITEM DESCRIPTION & SPECIFICATIONS                          AMOUNT
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1. Concrete Slab Trenching & Slab Breakout (64 lf)              $1,920.00
2. Interior Perforated Perimeter Drain System (64 lf @ $45/lf)  $2,880.00
3. Washed River Rock Drainage Gravel & Filter Fabric Sleeve    $480.00
4. High-Density Wall Dimple Board & Vapor Barrier (64 lf)       $1,280.00
5. Heavy-Duty Sump Basin + 1/2 HP Primary Submersible Pump      $1,450.00
6. Dual-Battery Backup Sump System with Inverter & Charger     $850.00
7. Exterior 1.5" PVC Discharge Line & Freeze-Guard Vent        $420.00
8. High-Pressure Polyurethane Wall Crack Injection (2 Ports)    $450.00
9. Slab Concrete Restoration & Smooth Trowel Finish             $960.00
--------------------------------------------------------------------------------
ESTIMATE SUBTOTAL:                                             $10,690.00
Sales Tax (if applicable on materials):                         $0.00
--------------------------------------------------------------------------------
TOTAL PROJECT ESTIMATE:                                        $10,690.00
--------------------------------------------------------------------------------

MILESTONE PAYMENT DRAW SCHEDULE:
- 30% Initial Deposit (upon contract signing & scheduling):     $3,207.00
- 50% Intermediate Draw (upon trenching & pipe install):       $5,345.00
- 20% Final Balance (upon pump testing & concrete cure):        $2,138.00

SYSTEM WARRANTY BOUNDS:
10-Year Limited System Warranty on installed perimeter drain pipe, wall dimple 
board, and floor-wall seam water diversion for the North and West walls only.

EXCLUSIONS & UNTREATED AREA DISCLAIMER:
Estimate excludes exterior yard grading, gutter/downspout extensions, foundation 
structural leveling, finished drywall reconstruction, framing, and mold abatement.
================================================================================

Per-linear-foot cost benchmarks and material math

Waterproofing profitability relies on accurate linear footage pricing that accounts for labor-intensive slab removal and heavy material disposal:

Interior Perimeter Drain ($40–$90 per linear foot): Covers slab jackhammering, soil removal, installing 4-inch perforated drain tile, surrounded by 3/4-inch washed gravel, and capping with fresh concrete.
Wall Vapor Barrier & Dimple Board ($15–$30 per linear foot): Encapsulates foundation walls, channeling seeping water down into the sub-floor drain before it hits the basement living space.
Sump Pump Systems ($1,200–$2,800 complete): Primary cast-iron 1/2 HP pump ($1,200–$1,600) plus secondary battery backup system ($800–$1,200) to ensure continuous operation during storm power outages.

How to write enforceable warranty bounds and scope limits

Vague waterproofing promises like “Lifetime Dry Basement Guarantee” expose contractors to endless litigation over issues beyond their control. Structure your warranty terms tightly:

Bind Warranty to Specific Walls: Specify exact linear footage and wall directions (e.g. “North wall perimeter system only”). Untreated South or East walls that seep in future years are explicitly excluded from warranty coverage.
Exclude Exterior Water Ingress Factors: State clearly that gutter overflows, clogged downspouts, roof runoff, municipal water main breaks, and negative yard slope grading are not covered under the interior drain warranty.
Clarify Finished Wall Reconstruction Exclusions: Cutting trenches requires cutting into bottom-track drywall and wood framing. Include an explicit exclusion stating that finished carpentry, drywall patching, painting, and flooring restoration are the property owner’s responsibility unless quoted as a separate line item.

Progress draw schedules for multi-day waterproofing jobs

Waterproofing projects take 3 to 5 days of intense labor. Never carry all material and labor expenses to the end of the project:

30% Upfront Deposit: Secures material ordering (sump pumps, drain pipe, dimple board) and locks in site scheduling. Read our guide on how to ask for a deposit without losing the job.
50% Trenching & Mechanical Draw: Issued once concrete is trenching-excavated and pipe/basin assembly is positioned before poured concrete restoration. Read our complete guide on how to bill progress draws on a multi-week project.
20% Final Balance: Paid upon successful pump discharge testing and final site cleanup.