Expert Basement Renovations & Finishing Across the GTA
Get matched with skilled basement renovation professionals for finishing, waterproofing, underpinning, egress windows, bathroom additions, flooring, and framing -- across the Greater Toronto Area.
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Basement Renovation Services Across the GTA
Connect with skilled basement contractors for residential projects throughout the Greater Toronto Area
Basement Finishing & Renovations
Complete basement finishing and renovation services across Toronto and the GTA, transforming unfinished lower levels into fully livable spaces with framing, insulation, drywall, flooring, electrical, and plumbing.
- Full-scope finishing from unfinished concrete to move-in ready
- Framing, insulation, drywall, flooring, ceiling, and trim
- Electrical, plumbing, and HVAC rough-in and finishing
Basement Waterproofing
Interior and exterior basement waterproofing for Toronto and GTA homes, including weeping tile installation, sump pumps, foundation crack repair, and exterior membrane systems.
- Interior perimeter drainage and weeping tile systems
- Sump pump installation with battery backup
- Foundation crack injection (polyurethane and epoxy)
Basement Underpinning & Lowering
Basement underpinning and floor lowering to increase ceiling height in Toronto and GTA homes, creating legal living space from shallow basements with full structural engineering.
- Bench footing and full-depth underpinning methods
- Licensed structural engineering and permit drawings
- City of Toronto building permit and inspection coordination
Egress Window Installation
Code-compliant egress window installation for Toronto and GTA basements, meeting Ontario Building Code requirements for bedroom escape routes and secondary suite legalization.
- Ontario Building Code compliant sizing (min 3.77 sqft opening)
- Foundation wall cutting for concrete and block walls
- Window well excavation, construction, and drainage
Basement Bathroom Addition
Basement bathroom installation for Toronto and GTA homes, including rough-in plumbing, concrete cutting, up-flush systems, ventilation, waterproofing, and full finishing.
- Rough-in plumbing with concrete slab cutting and drain connection
- Macerating (up-flush) toilet systems for difficult plumbing layouts
- Ontario Building Code compliant exhaust ventilation to exterior
Basement Flooring Installation
Basement flooring solutions for Toronto and GTA homes, including luxury vinyl plank, engineered hardwood, tile, epoxy, subfloor systems, and radiant in-floor heating.
- Luxury vinyl plank (LVP) — waterproof and dimensionally stable
- Engineered hardwood with vapour barrier subfloor systems
- Porcelain tile for bathrooms, laundry, and high-moisture areas
Basement Framing & Insulation
Basement framing and insulation for Toronto and GTA homes, including steel and wood stud walls, rigid foam, spray foam, batt insulation, and Ontario Building Code R-value compliance.
- Wood and steel stud framing with foundation standoff
- Rigid foam insulation (XPS/EPS) against foundation walls
- Closed-cell spray foam for combined insulation and vapour barrier
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Get instant answers to your basement renovation questions from our expert knowledge base
Why Use Toronto Basement Remodeling
Free Matching Service
Our service costs homeowners nothing. Describe your basement project and we match you with professionals who specialize in that exact type of work -- from full finishing to waterproofing to underpinning. No fees, no obligation.
GTA-Wide Coverage
From downtown Toronto condo storage conversions to full basement renovations in Vaughan, waterproofing in Mississauga, and underpinning across Durham Region. We match you with basement pros who know your area.
Toronto Construction Network
Backed by the Toronto Construction Network -- the GTA's largest contractor directory with hundreds of listings across every construction trade.
Frequently Asked Questions
How much does it cost to finish a basement in Toronto?
Basement finishing in the GTA typically costs $35-$75 per square foot, depending on scope, finishes, and whether plumbing is included. A standard 800-1,000 sq ft basement finish runs $28,000-$75,000. Adding a bathroom adds $15,000-$30,000. Underpinning costs $150-$300 per square foot. GTA costs run 30-60% higher than the national average due to Toronto's permit fees and higher trade labour rates.
Do I need a permit to finish my basement in Toronto?
Yes, finishing a basement in Toronto and most GTA municipalities requires a building permit. The City of Toronto requires permits for any work that changes the use of a space, adds habitable rooms, or involves structural, electrical, plumbing, or HVAC modifications. Ontario Building Code Part 9 governs all residential basement finishing requirements including ceiling height minimums, egress windows, fire separation, and smoke and CO detector placement.
How long does a basement renovation take in the GTA?
A typical GTA basement renovation takes 6-12 weeks from permit approval to completion. This includes framing and rough-in preparation, electrical, plumbing, and HVAC rough-ins, insulation and vapour barrier, drywall, flooring, trim, paint, and fixtures. Permit approval itself can take 2-6 weeks in Toronto. Projects involving underpinning add 4-8 weeks.
Can I add a basement apartment or secondary suite in Toronto?
Yes, Toronto actively encourages secondary suites in basements. The suite must meet Ontario Building Code requirements for a separate dwelling unit: minimum ceiling height of 1,950 mm, two means of egress, fire separation, separate smoke and CO detection, adequate natural light and ventilation, and independent heating. A legal basement apartment adds significant rental income potential and increases property value.