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Waterproofers Blog – Expert Advice on Basement Waterproofing & Home Protection

How Much Does Basement Waterproofing Cost? (2025)

Waterproofing Cost!

EXTERIOR WATERPROOFING COST…

In 2025, exterior basement waterproofing costs typically range from $100 to $300 per linear foot. For an accurate quote, a free on-site assessment is required.

 

INTERIOR WATERPROOFING COST…

In 2025, interior basement waterproofing costs typically range from $60 to $150 per linear foot. For a precise quote, a free on-site assessment is required.

 

FOUNDATION CRACK REPAIR COST…

In 2025, foundation crack repairs typically involve a 6-foot section of exterior waterproofing and cost between $1,600 and $2,600 per crack. A free on-site assessment is required for an accurate quote.

 

FOUNDATION CRACK INJECTION COST…

In 2025, crack injection typically costs between $750 and $1,400 per crack.

 

SUMP PUMP COST…

In 2025, sump pump costs start at $650 for a simple replacement. A full system, including a new sump pit and battery backup sump pump, can cost up to $3,600.

 

BACKWATER VALVE COST…

In 2025, the cost to install a backwater valve depends on the type:

  • Interior backwater valve: $2,000–$2,600 (plus permit)

  • Exterior backwater valve: $2,500–$4,200 (plus permit)

A free on-site assessment is recommended to determine which option is best for your property.

Rebates will need a permit

REBATES AVAILABLE IN THE GTA INCLUDE…
(Toronto)

🌧️ Flood Protection Made Affordable!
Own a single-family home, duplex, triplex, or fourplex? You can get up to $3,400 per property to protect your home from flooding.

This subsidy helps cover:
✔️ Installing a backwater valve
✔️ Installing a sump pump
✔️ Disconnecting and sealing your home’s storm sewer or external weeping tile connection

⚠️ Note: disconnecting downspouts from your eavestrough system is not included in this program.

 

(Halton)

Must be an approved contractor of Halton to receive this rebate, Canada Waterproofers is an approved contractor.

💧 Protect Your Home — At No Cost to You!
Halton Region will cover 100% of the cost (materials and labor) to disconnect your weeping tile and install a sump pump — up to $5,000 per home.

Stay dry, save money, and keep your basement safe from flooding!

🚰 Save on Sewer Line Repairs!
Halton Region will cover 50% of the cost (materials and labour) to repair your sanitary lateral — the underground pipe that carries wastewater from your home. That’s up to $2,000 in savings!

Keep your home safe, protect your pipes, and reduce repair costs.

🛡️ Stop Sewage Backups Before They Start!
Halton Region can cover 50% of the cost (materials and labour) to install a backwater valve — that’s up to $675 in savings.

Keep your basement dry and your home safe from flooding.

(MISSISSAUGA)

🏠 Rebates Up to $7,500 Available!
You may qualify for up to $7,500 to help cover the cost of basement flood prevention.

💧 Make Your Home Flood-Ready!
Get help covering the cost of water-resistant upgrades and other flood-prevention improvements.

Receive a rebate for 50% of your expenses, up to $3,000.

 

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