Skip to main content
Professionally waterproofed and underpinned basement in Toronto
Licensed & Insured | Serving Toronto Since 2005

Complete Basement Underpinning & Water Management Solutions

From basement underpinning and waterproofing to septic systems and rainwater harvesting, we provide comprehensive water management solutions for your Toronto property.

24/7 Emergency Service
25-Year Warranty
4.8/5 Customer Rating
Our Expert Solutions

Professional Basement & Water Management Services

Our comprehensive services address all your basement and water management needs, providing lasting solutions for your Toronto property. Each solution is customized to your specific situation.

Interior waterproofing system installation in Toronto basement

Interior Waterproofing

Our interior waterproofing systems manage water that's already penetrated your foundation, redirecting it away from your Toronto home's living space with advanced interior drainage systems, sump pumps, and moisture barriers. Ideal for existing homes with water problems.

  • Interior drainage channels
  • Sump pump installation
  • Vapor barriers
  • Less disruptive installation
  • Practical for finished basements
Starting from: $50-100per linear foot
Exterior waterproofing membrane application in Toronto Most Effective

Exterior Waterproofing

Our Toronto exterior waterproofing provides the most comprehensive protection by creating a complete waterproof barrier on the outside of your foundation walls, preventing water entry and hydrostatic pressure. The gold standard in foundation protection for Toronto homes.

  • Foundation excavation
  • Waterproof membrane application
  • Weeping tile installation
  • Complete water barrier
  • 25+ year protection
Starting from: $70-150per linear foot
Basement lowering and underpinning process in Toronto Legal Basement Apartments

Basement Lowering & Underpinning

Transform your cramped Toronto basement into a spacious, legal-height living space through our expert underpinning and basement lowering services. Ideal for creating code-compliant basement apartments, adding significant property value, and maximizing your Toronto home's potential.

  • Increase ceiling height by 1-2 feet
  • Structural foundation reinforcement
  • Permits and engineering drawings included
  • Integration with waterproofing systems
  • Meets Toronto building code requirements
Starting from: $250-350per square foot
Foundation crack repair process in Toronto home

Foundation Crack Repair

Our specialized injection techniques provide permanent solutions for all types of foundation cracks, preventing water infiltration while preserving structural integrity.

  • Epoxy injection
  • Polyurethane injection
  • Structural reinforcement
  • Non-invasive repairs
  • Lifetime warranty
Explore Crack Repair Services
Starting from: $800per project
Septic system installation in GTHA property GTHA Specialists

Septic System Installation

Complete septic system solutions designed and installed to meet local regulations and your property's specific needs in the Greater Toronto and Hamilton Area.

  • Custom septic system design
  • Tank and leach field installation
  • Ontario regulations compliance
  • Soil testing and site evaluation
  • Maintenance programs available
Starting from: $15,000per system
Rainwater harvesting system for Toronto home Eco-Friendly

Rainwater Harvesting

Custom rainwater collection systems for Toronto homes that conserve water, reduce utility bills, and provide sustainable irrigation solutions tailored to Toronto's climate.

  • Above and below-ground storage tanks
  • Filtration and pump systems
  • Irrigation integration
  • Smart monitoring systems
  • Toronto rebate eligible
Starting from: $3,500per system
Professional mold remediation process in Toronto home

Mold Remediation

Our comprehensive mold remediation services address existing mold issues caused by water damage while eliminating the source of moisture to prevent future growth, creating a healthy living environment.

  • Thorough mold inspection and testing
  • Safe removal of affected materials
  • Professional-grade antimicrobial treatment
  • Source moisture problem correction
  • Post-remediation air quality testing
Starting from: $1,500per project
Window well installation with drainage system in Toronto

Window Well Installation

Protect your basement windows from water infiltration while improving natural light with our professionally installed window wells, complete with proper drainage and waterproof sealing.

  • Custom galvanized steel or polymer wells
  • Built-in drainage systems
  • Window weatherproofing and sealing
  • Decorative stone options available
  • Clear polycarbonate covers available
Starting from: $800per window
Code-compliant egress window installation for Toronto basement Code Compliant

Egress Window Installation

Meet Toronto building codes for legal basement apartments with our egress window installation services, providing both safety compliance and enhanced natural lighting for your basement living space.

  • Code-compliant sizing and installation
  • Foundation cutting and reinforcement
  • Waterproof window well installation
  • Permits and inspections handled
  • Energy-efficient window options
Starting from: $3,500per window
Property water management solutions in Toronto

Property Water Management

Comprehensive solutions to direct rainwater away from your Toronto home's foundation and prevent property damage with strategies designed for Ontario's increasingly extreme weather patterns.

  • Site grading and landscaping
  • Catch basin installation
  • Downspout extensions and solutions
  • Erosion control measures
  • Permeable paving options
Starting from: $2,000per project
Why Choose Us

The Toronto Basement Masters Difference

When you choose Toronto Basement Masters for your basement and water management needs, you're partnering with Toronto's most trusted specialists. Here's what sets us apart:

๐Ÿ™๏ธ

Toronto-Specific Expertise

We understand Toronto's unique soil conditions, weather patterns, and municipal regulations. Our solutions are tailored specifically for the challenges faced by GTA homeowners.

๐Ÿ”„

Complete Service Integration

From waterproofing to underpinning to rainwater harvesting, our services work together as a comprehensive water management system, not just isolated fixes.

๐Ÿ“

Engineering-Based Approach

Our team includes professional engineers who ensure every solution is structurally sound and designed for maximum effectiveness and longevity. We prioritize safety standards in every project we undertake.

๐Ÿ›ก๏ธ

Transferable 25-Year Warranty

Our industry-leading warranty can be transferred to new homeowners, enhancing your property's value and providing peace of mind for decades.

๐Ÿ’ฐ

Toronto Rebate Navigation

We help you access municipal incentives and rebates, potentially saving thousands on your project through the Basement Flooding Protection Subsidy Program and other initiatives.

๐ŸŒฑ

Sustainable Solutions

Our water management systems are designed with sustainability in mind, helping reduce water waste and environmental impact while saving you money.

Our Approach

The Toronto Basement Masters Waterproofing Process

Our specialized waterproofing process has been refined over years of experience with Toronto's unique soil conditions and housing styles. We follow a methodical approach that ensures waterproofing integrity and exceptional results.

1

Inspection & Assessment

Our waterproofing experts thoroughly evaluate your basement or foundation issues, identifying moisture sources, structural concerns, and specific challenges unique to your home. We use advanced moisture detection tools to locate water entry points that might not be visible to the naked eye.

Toronto Basement Masters technician inspecting a basement for moisture issues
2

Customized Solution Design

Based on our assessment, we develop a tailored waterproofing plan specifically designed for your home's unique conditions. This includes determining whether interior or exterior methods (or a combination) will be most effective, and identifying any additional services needed for complete protection.

Toronto Basement Masters technician explaining waterproofing plan to homeowner
3

Preparation & Protection

Before work begins, we carefully prepare the work area by protecting your property, establishing dust containment systems for interior work, or planning excavation methodologies for exterior projects. For exterior waterproofing, we coordinate with utilities to ensure safe excavation around service lines.

Work area preparation with protective coverings
4

Waterproofing Implementation

Our experienced technicians execute the waterproofing plan using industry-leading materials and techniques. For exterior waterproofing, this includes foundation excavation, wall cleaning, crack repair, membrane application, and drainage system installation. Interior systems involve installation of drainage channels, sump systems, and vapor barriers.

Waterproofing membrane application on foundation wall
5

Secondary Systems Installation

We incorporate additional protection systems as needed, such as sump pumps with battery backups, backwater valves, or exterior drainage improvements. These complementary systems create a comprehensive water management solution that addresses potential water issues from multiple angles.

Sump pump system installation
6

Final Inspection & Warranty

Upon completion, we conduct a thorough quality inspection to ensure all systems are functioning properly. We then provide you with complete documentation of the work performed, maintenance recommendations, and details of your transferable warranty coverage. For eligible installations, we'll also assist with Toronto rebate paperwork.

Final inspection of completed waterproofing system
Real Results

Before & After Transformations

We've helped hundreds of Toronto homeowners transform their wet, problematic basements into dry, usable spaces. See the dramatic difference our solutions make.

Leaking basement with water damage before waterproofing Before
Dry basement after waterproofing After
100% Water Reduction
900 sq ft Space Protected
5 days Project Duration
"This 1970s home suffered from severe water infiltration during heavy rainstorms. We implemented a comprehensive exterior waterproofing system with weeping tile replacement. The basement is now completely dry, even during the heaviest Toronto downpours."
โ€” Sarah M., East York

East York Exterior Waterproofing Project

This East York home had struggled with water issues for over a decade, with previous spot fixes failing to solve the problem. Our team performed a complete exterior waterproofing solution, including foundation excavation, crack repair, waterproof membrane application, and a modern weeping tile system that directs water away from the foundation.

Get a Free Quote for Your Project
Flooded basement before treatment Before
Dry basement after waterproofing After
12 Cracks Repaired
750 sq ft Space Protected
3 days Project Duration

North York Foundation Repair

Multiple foundation cracks were causing constant moisture issues. Our polyurethane injection process sealed all cracks permanently while allowing for natural foundation movement.

Get a Free Quote for Your Project
Basement with mold issues before treatment Before
Clean basement after mold remediation and waterproofing After
100% Mold Removal
1100 sq ft Space Treated
7 days Project Duration

Scarborough Basement Remediation

This Scarborough home required both mold remediation and comprehensive waterproofing. We removed all contaminated materials, treated surfaces, and installed an interior drainage system with a new sump pump.

Get a Free Quote for Your Project

What Our Clients Say

โ˜…โ˜…โ˜…โ˜…โ˜…

"Our basement went from a disaster zone to a dry, comfortable space โ€” thanks to Toronto Basement Masters! The team was professional, thorough, and left our property cleaner than when they arrived. We've now been through two spring thaws with no water at all."

โ€” Sarah M., Scarborough

โ˜…โ˜…โ˜…โ˜…โ˜…

"After trying three other companies that couldn't solve our basement water issues, Toronto Basement Masters diagnosed the problem immediately and fixed it permanently. It's been two years with no water issues! Their exterior waterproofing solution was more comprehensive than anything other companies proposed."

โ€” Michael K., Etobicoke

โ˜…โ˜…โ˜…โ˜…โ˜…

"The Toronto Basement Masters team helped me navigate Toronto's rebate program and saved me thousands on my backwater valve and sump pump installation. Now I have peace of mind during heavy rains. They handled all the paperwork and inspections perfectly."

โ€” Jennifer L., Downtown Toronto

Emergency Response

Basement Flooding Emergency Guide

If your basement has water intrusion, acting quickly can prevent further damage and costly repairs. Follow our interactive step-by-step guide:

1
2
3
4
5
6
1

Ensure Safety First

โšก
Turn off Power โ€” If water is near electrical outlets or appliances, turn off the power from the breaker box to avoid electrical hazards.
๐Ÿฅพ
Wear Protective Gear โ€” Use rubber boots and gloves to protect yourself from contaminated water.

NEVER enter a flooded basement if the power is on or if there's a risk of electrical shock.

Continue to Step 2
2

Identify the Source

Look for these common causes of basement water:

Foundation Cracks โ€” Water seeping through small cracks

Window Well Leaks โ€” Water entering through basement windows

Sump Pump Failure โ€” A common issue during heavy rainfall

Clogged Gutters โ€” Causing water to pool near the foundation

Plumbing Leaks โ€” Broken pipes or faulty appliances

Check the water type for safety purposes:

Clean Rainwater or pipe leak - Safe to remove yourself
Gray Washing machine/dishwater runoff - Use protective gear
Black Sewage โ€” Professional help required immediately
3

Remove Water

๐Ÿงน
For Small Amounts: Use towels, mops, and buckets
๐Ÿ’ง
For Larger Flooding: A wet/dry vacuum or submersible pump will speed up removal
๐Ÿ“ž
For Severe Flooding: Contact a professional water damage restoration company

For sewage backups or contaminated water, professional help is strongly recommended.

4

Dry the Area

๐ŸŒฌ๏ธ
Use dehumidifiers, fans, and open windows (if weather allows) to improve airflow
โ™จ๏ธ
Run your HVAC system to enhance ventilation
๐Ÿ›‹๏ธ
Remove wet carpets, furniture, and belongings to speed up drying

Place fans at a 45-degree angle to walls to create optimal air circulation. This can reduce drying time by up to 50%.

5

Disinfect and Clean

๐Ÿงด
Clean all affected surfaces with a bleach solution (1 cup bleach per gallon of water) to kill mold and bacteria
โ™ป๏ธ
Dispose of heavily damaged or mold-infested materials

Never mix bleach with ammonia or other cleaners as this can create toxic fumes. Always ensure good ventilation while cleaning.

6

Prevent Future Water Issues

Install a Sump Pump โ€” Ensures water is directed away from your basement

Waterproof the Walls โ€” Apply waterproof coatings or sealants to basement walls

Improve Drainage โ€” Ensure downspouts extend 6 feet away from the foundation

Install a Backwater Valve โ€” Prevents sewage backup during heavy rain

Grade Your Yard โ€” Ensure soil slopes away from your home's foundation

For permanent protection, contact a professional

Download Our Complete Emergency Guide

Get our comprehensive basement flooding emergency response guide as a PDF to keep handy in case of water emergencies.

Download PDF Guide

Frequently Asked Questions

Get answers to common questions about basement underpinning, waterproofing, and water management.

How much does basement underpinning cost in Toronto?

Basement underpinning in Toronto typically costs between $250-350 per square foot, depending on factors such as soil conditions, structural complexity, and finished details. A standard 800 sq ft basement would range from $200,000-280,000 for a complete underpinning project. During our free assessment, we'll provide a detailed estimate for your specific situation.

What's the difference between interior and exterior waterproofing?

Interior waterproofing is effective for managing water that's already entered and is best for minor leaks. Exterior waterproofing is the best long-term solution as it prevents water from entering in the first place. For serious leaks, combining both methods often provides the best protection. Our experts will recommend the most appropriate solution based on your specific situation in the Greater Toronto Area.

How long does a basement underpinning project take?

A typical basement underpinning project in Toronto takes 6-12 weeks depending on the size of your basement, soil conditions, and if additional services like waterproofing or finishing are included. The process includes obtaining permits, engineering drawings, excavation, structural work, and inspections. Our team works efficiently to minimize disruption to your home.

What are the benefits of rainwater harvesting in Toronto?

Rainwater harvesting in Toronto provides multiple benefits: reduced water bills (saving up to 50% on water usage), decreased strain on municipal systems during heavy rainfall, sustainable water source for gardening during summer restrictions, and potential rebates through Toronto's Eco-Roof Incentive Program. Our systems are custom designed for Toronto's climate and seasonal variations.

Are there any Toronto-specific grants for basement renovations or waterproofing?

Yes! Toronto offers several incentive programs: the Basement Flooding Protection Subsidy Program (up to $3,400 for backwater valves and sump pumps), the Home Energy Loan Program (HELP) for energy-efficient basement renovations, and potential HST rebates for substantial renovations. Additionally, creating a legal basement apartment may qualify for the Laneway Suite and Secondary Suite program incentives. Our team can help you navigate these programs to maximize your savings.

Do I need a permit for basement underpinning in Toronto?

Yes, basement underpinning in Toronto requires building permits and professional engineering drawings to ensure structural integrity and code compliance. Our comprehensive service includes handling all permit applications, engineering requirements, and inspections throughout the project, making the process stress-free for homeowners.

Contact Us

Schedule your free, no-obligation assessment or ask us any questions about your basement and water management needs.

Toronto Basement Masters Waterproofing & Underpinning

Serving the Greater Toronto and Hamilton Area since 2005

123 Main Street, Toronto, ON M4C 1A1

Emergency Services Available

Regular Hours: Monday-Friday 7am-7pm

Weekends: 8am-4pm

Schedule Your Free Assessment

Call Now