Basement suite conversion cost in Toronto (2026)
A typical 900 sqft basement in Toronto lands between $46,780 and $72,580 on our rate card — smaller projects can land near $37,600, big ones reach $76,080+. That's from $52/sqft at builder grade. The site check is free, and the 10% deposit after it means you start for about $6,385 — the rest is paid per passed milestone. And unlike every cost guide on this page of Google, these numbers aren't estimates from last year: they render from the same live Mr.C rate card the crews are paid on, today.
What it actually costs
TYPICAL PRICE — 900 SQFT BASEMENT · LIVE FROM THE MR.C RATE CARD — UPDATED AUGUST 2026Those are typical mid-size projects. Your number moves with square footage and the answers you give — smaller rooms genuinely price smaller, and every add or reduction shows as its own line. The estimate is ±30% at step one and ±8% by the end, then one site check locks it. After that, changes only happen as written change orders you approve.
What moves the price
THIS IS THE LIVE BRIEF — TAP ANSWERS, WATCH YOUR ESTIMATE MOVEVerified crews, real jobs
How the price gets — and stays — honest
- 01Build a 2-minute briefAnswer what you know, skip what you don’t. The estimate reprices live with every answer.
- 02Lock it with 10%Refundable until the first crew accepts. Verified crews take your job cards within 24–48h.
- 03One site checkHidden conditions only — photographed and priced in writing before anything proceeds.
- 04Pay per passed milestoneCrews are paid when milestones pass YOUR approval. Final 5% after your walkthrough.
Basement suite conversion cost questions, answered straight
How much does a basement suite conversion cost in Toronto in 2026?
It prices live on this page: the full finish plus the 3-piece bathroom and suite-ready kitchenette are itemized lines, computed from the rate card at YOUR square footage. Partition rooms and the egress window add on per tier — no averages, no sales visit.
What does a suite conversion include?
Everything a self-contained unit needs: framing, insulation, drywall, flooring, electrical and trim, a 3-piece bathroom (rough-in, toilet, vanity, shower), a kitchenette (sink plumbing, appliance circuits, cabinets and counter), the rooms you want, and the egress window add-on where required.
Is a converted basement automatically a legal second suite?
No — legal-suite status needs egress, ceiling height, fire separation and permits, and rules vary by municipality. The crew flags any gap at the site check and prices the difference in writing before your number locks.
How long does a suite conversion take?
A typical 900 sqft conversion runs 6–9 weeks: framing, rough-ins, board, kitchen and bath fit-out, floors and finish — each a paid-on-pass milestone you approve from your project room.
Is a basement suite worth it?
Most GTA basement suites rent in the $1,500–$2,200/month range depending on size and finish, so conversions commonly pay for themselves within a few years — and the itemized quote makes the payback math easy to run before you commit.