Basement Renovation
On average, the basement is one-third of your home. Why settle for a storage room when it can be a legal second suite generating rental income, a soundproof entertainment space, or a separate in-law apartment with its own walkout entrance?
What a CNB basement renovation looks like
- Full waterproofing + structural review. Before any framing, we inspect for moisture, mould, and structural issues. Underpinning quotes provided where ceiling height is below 1.95m.
- Permit-handled. Plans drawn, code review documented, permit filed with the City of Toronto. You receive copies of every inspection sign-off.
- Separate entrance specialty. Walkouts, side-entries, English-style staircases — designed to meet bylaw 569-2013 for legal second suites.
- Soundproofing as standard. Resilient channel, Roxul Safe’n’Sound, double drywall — not optional.
- Finish-grade materials. Engineered hardwood, porcelain tile, quartz countertops — quoted line-by-line, no surprises.
Why a legal second suite pays for itself
An average 800 sqft Toronto basement suite rents for $1,800–2,200/month in 2026. At a $90,000 build cost (mid-range with bath), the unit pays back in roughly 4 years. After that, it’s positive cashflow that follows you for the life of the property — and the renovation itself adds 12–18% to your home’s resale value (TRREB 2025 data).
Toronto bylaw + OBC compliance we follow
Every CNB basement project is built to Toronto Municipal Code Chapter 569, Ontario Building Code 2024 Section 9.36, and Electrical Safety Authority requirements. Specifically: 1.95m minimum habitable ceiling (1.9m under beams), 30-minute fire separation between suites, two means of egress, hardwired interconnected smoke + CO detectors, and dedicated HVAC zoning for legal apartments.
What you get when you call us
A free walkthrough at your home (not a phone quote). Honest assessment of feasibility, structural concerns, and realistic budget range — written down, sent same day. If we can’t do it, we’ll tell you who can.
Toronto 2026 cost ranges
| Basic finish | $35-55/sqft |
| Mid-tier with bath | $55-80/sqft |
| Legal second suite | $90-140/sqft |
| + Separate entrance | +$10-30K |
Real client projects, not generic estimates. Quotes always written, no surprise fees.
From first call to handover
Free walkthrough
We come to your home. No quote on the spot — proper assessment first.
Design + permit
Drawings, code review (OBC 2024), permit filed with City of Toronto.
Build
Site crew, weekly milestones, photo updates, no subcontractor surprises.
Handover
Inspection, walkthrough, warranty documents, tenant marketing tips.
FAQ
Do you handle permits?
Yes. We file with the City of Toronto, schedule inspections, provide all documentation for closing or insurance. Permits typically take 6-12 weeks to issue in Toronto 2026.
What if my basement has a low ceiling?
Toronto Bylaw 569-2013 + OBC 2024 require 1.95m minimum (1.9m under beams) for habitable basement. Below that — we recommend underpinning (+$30-80K) or bench footing.
How long is the typical project?
Basement: 8-12 weeks build. Bathroom: 2-4 weeks. Decking: 1-2 weeks. Demolition: 1-3 weeks. Permit timeline adds 6-12 weeks before build can start.
Are you insured?
Yes. WSIB clearance, $2M liability coverage, licensed Toronto contractor. 10-year structural warranty on all basements.
Get a free walkthrough quote
437-217-5519 · cnbrenovation@gmail.com · 8 AM - 11 PM, 7 days a week