Home theatres, gyms & offices
Dedicated zones for AV, fitness, or quiet work — soundproofing and layout planned from day one.
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Starting from $65,000 · Completed in 4–8 weeks
Basement renovation Toronto homeowners choose for clear basement renovation cost in Toronto and fixed pricing — legal secondary suites, moisture management and full finishing. 50+ projects across Toronto; WSIB-certified, dedicated project manager and 10-year waterproofing warranty on qualifying work.
WSIB CertifiedFixed Pricing50+ Projects4.9 GoogleReal 2026 pricing based on 50+ completed Toronto basement projects — from $65K finished living space to $200K+ legal suites with separate entrance. Most complete basement renovations land between $65,000–$150,000+ depending on size, finishes, moisture work, and whether a legal secondary suite is involved — typically $65–$150+ / sq ft. For broader research, see our basement renovation cost guide.
$65,000 – $95,000
4–6 weeks
$95,000 – $150,000
6–8 weeks
$120,000 – $200,000+
8–12+ weeks
Basement projects in Toronto often mean juggling trades, permits, and moisture risk. We run layout, waterproofing, and construction under one fixed-price contract — with one project manager and fewer surprises.
A documented fixed-price quote before work begins — labour, materials, permits, and project management included.
One point of contact from first consultation to final walkthrough. You are never left chasing trades or updates.
Milestone-based schedules built around permits and waterproofing — backed by our on-time completion guarantee.
Design, permits, waterproofing, construction, and inspections under one roof across Toronto neighbourhoods.
From family-friendly living spaces to fully legal rental suites, we deliver end-to-end basement renovations designed for comfort, value, and long-term performance.
Review basement renovation pricing tiers above before choosing your scope, or use the basement renovation planning guide to prepare questions for your consultation.
Smart layouts that maximize light, space, and functionality. See your new basement in 3D before construction begins with detailed floor plans and material selections.
Start your design
Fully compliant, income-generating secondary suites built to Toronto code. We handle zoning review, permit applications, fire separation, egress, and all inspections.
Learn about suites
Comprehensive waterproofing solutions including exterior membranes, interior drainage systems, sump pumps, and foundation crack repair. 10-year warranty on all waterproofing.
Protect your investmentDedicated zones for AV, fitness, or quiet work — soundproofing and layout planned from day one.
Guest rooms, ensuites, and full baths with proper egress, ventilation, and moisture control to code.
Separate entrances, natural light, and graded exits that support legal suites and long-term resale value.
Headroom strategies, soffits, and bulkheads coordinated around ducts and structure so the space feels open.
Heated slabs, layered lighting, and durable materials chosen for below-grade humidity and daily use.
Zoning review, building permits, inspections, and fire separation handled with your dedicated project manager.
See how we transform unused spaces into beautiful, functional, and value-adding areas across Toronto.
View more projects →We’re a Toronto design-build firm with over 50 basement transformations completed. Fewer projects, higher standards. You get a dedicated team and a process built to eliminate surprises.
Fixed quotes with no hidden fees. Basement quotes include waterproofing, structural work, finishing, and all permits — with a 10-year waterproofing warranty on qualifying work.
A single point of contact from consultation to completion. Your dedicated PM coordinates moisture assessment, structural engineering, and finishing trades under one timeline.
We commit to the timeline and keep you updated every step of the way. Most basement renovations are completed in 4–8 weeks, with a comprehensive 2-year workmanship warranty.
Prefer to talk? Call (416) 876-1052
Our proven step-by-step approach ensures your basement renovation is stress-free, efficient, and tailored to your needs. We guide you through each phase from free consultation to final walkthrough.
Week 0
Thorough assessment of your basement space, structural considerations, and moisture issues. Custom 3D renderings and floor plans so you can visualize the finished space.
Weeks 1–2
Layout, materials, and a fixed-price quote. We handle all City of Toronto permit applications, zoning compliance, and pre-construction site protection.
Weeks 3–8
Waterproofing, structural work, framing, electrical, plumbing, insulation, drywall, flooring, and fixture installation. Clean site, minimal disruption to your daily life.
Week 8
Meticulous quality checks, municipal inspections, professional cleaning, and a full walkthrough. Handover of warranties and maintenance guidelines.
We’ve completed 50+ basement transformations across Toronto. Here’s what clients say about working with Maserat.
He truly listened and understood our project, in terms of what we needed, our budget, our timing and our taste. His suggestions and ideas were extremely helpful and eye-opening from the beginning. He was true to his initial promises with accurate estimates and delivered over and beyond.
From the initial design consultation to the final walkthrough, the attention to detail was impressive. Our basement renovation was completed on schedule and on budget, with no surprises. The space is now our favourite part of the home.
We were hesitant about renovating our old basement due to moisture concerns, but Maserat guided us through every step. The finished space added exactly what our growing family needed — a playroom, guest suite, and home office.
The legal suite conversion was handled professionally from start to finish. Maserat managed all the permits and inspections, and now we have rental income that covers a significant portion of our mortgage.
Our home theatre basement is incredible. The soundproofing, lighting, and built-in storage exceeded our expectations. The fixed pricing meant we could plan confidently with no cost surprises.
Maserat solved our basement moisture problem once and for all. The waterproofing system they installed came with a 10-year warranty, and the finished space feels dry, warm, and inviting. Professional and trustworthy.
Toronto’s climate and older housing stock present unique challenges. We offer specialized solutions backed by 50+ completed basement projects and a 10-year waterproofing warranty.
Given Toronto’s climate, effective waterproofing is crucial for protecting your investment and ensuring a healthy living environment.
Converting your basement into a legal secondary suite is an excellent way to generate rental income or create a multi-generational living space.
Lower ceiling heights can make a basement feel cramped. We offer innovative solutions to maximize your usable headroom.
Basement transformations across Toronto's most established neighbourhoods — from secondary suites to home offices and entertainment spaces.
View all service areas →Walk-out basement conversions & media rooms
View projectsHeritage home lower-level transformations
View projectsFamily-sized basement finishes & rec rooms
View projectsBasement apartments & modern lower-level finishes
View projectsCentury home basement conversions & suites
View projectsLower-level storage & utility upgrades
View projectsEstate-home lower levels & wine cellars
View projectsCompact basement finishes & home offices
View projectsFamily basement finishes & secondary suites
View projectsFull basement finishes & income suites
View projectsWalk-out basement builds on ravine lots
View projectsUrban basement finishes & home offices
View projectsToronto basement renovation costs, waterproofing realities, and legal secondary suite requirements for 2026.
Pricing by scope from $65/sqft standard to $200+/sqft for waterproofed legal suites. ROI and timeline details.
TechnicalLowering basements for full ceiling height. Underpinning vs bench footing, permits, and secondary-suite ROI.
PermitsFASTRACK permits, Committee of Adjustment timelines, fees, and heritage requirements.
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Anna MercerClient Journey Specialist
Included
Not Included Until You Confirm Scope
Free consultation · Response within 24 hours · No obligation
Anna MercerClient Journey Specialist
Your information stays private. See our Privacy Policy.
Below-grade work in Toronto depends on existing conditions more than square footage alone. For broader cost research, see our basement renovation cost guide, then book a consultation for a fixed-price line-item quote.
Older homes in Forest Hill, Rosedale, and Lawrence Park often need drainage or membrane work before finishing. We include a moisture assessment and document waterproofing as a line item when required.
Low headroom can require HVAC coordination or underpinning to meet egress and comfort standards. Underpinning often adds $30,000–$80,000 depending on footprint and soil conditions.
Fire separation, separate entrance, egress, and full kitchen or bath for a self-contained unit multiply trade scope and permit complexity compared with a recreational finished basement.
Structural, plumbing, electrical, and suite conversions require City of Toronto permits. We manage applications and inspections; permit fees are passed through at municipal rates.
Representative line items for a mid-range finished basement (~1,000 sq ft). Your quote may differ by footprint, moisture work, and suite scope.
| Line item | Allocation |
|---|---|
| Demolition & disposal | $3,500 |
| Framing & insulation | $12,000 |
| Electrical (panels, circuits, lighting) | $9,500 |
| Plumbing (bathroom rough-in + finish) | $8,000 |
| Drywall, flooring, paint | $18,000 |
| Moisture management (allocation) | $6,000 |
| Permits & inspections | $2,000 |
| Project management & coordination | $8,000 |
| Cleanup & final walkthrough | $500 |
| Sample total | $80,000 |
Find answers to common questions about basement renovations in Toronto.
Have more questions? Browse our complete FAQ centre →