A garden suite in Toronto typically costs $400–$650 per square foot all in, which puts a one-bedroom build in the $275,000–$450,000 range in 2026. Where a project lands inside that range is decided by servicing distance, fire access, trees and finish level — the breakdown below walks through each.
The 2026 market range
Toronto garden and laneway suites are landing in the same broad $400 to $650 per square foot all-in market range as the rest of the GTA in 2026 — with the variance driven by site access, servicing distance, and finish level rather than by geography.
Typical all-in cost by size
Illustrative 2026 ranges we see across the Toronto market:
- Compact studio (~350–450 sq ft): $225k–$325k
- One-bedroom (~550–700 sq ft): $275k–$450k
- Two-bedroom (~800–1,000 sq ft): $350k–$550k+
Two-storey designs, high-end kitchens, and complex servicing push higher. The Modular X approach is to establish a hard budget after a feasibility review and lock the module price before construction starts.
Toronto-specific cost items
- Development charges exempt or deferred. Since Bill 23 and Toronto's ARU framework, garden and laneway suites don't carry the DC burden that hit pre-2023 second units. This is a meaningful saving — often $30k–$50k+ compared to the pre-reform era.
- Building permit fee: roughly $18.56/m² for residential construction (2026 rate). For a 65 m² (~700 sq ft) suite that's about $1,200 in permit fees. Toronto does not refund the fee at completion (unlike Mississauga).
- Soft costs: $25k–$70k range. Engineering, arborist reports, surveys, grading and drainage plans, utility connection permits. Bespoke designs push toward the top; pre-approved plans push toward the bottom.
- Parkland dedication may apply in some cases — check with Toronto Planning.
The fire access line item most owners miss
Toronto's fire-access rules trigger significant equipment costs based on the door-to-street distance:
- Suites where the door is less than 45 m from the street — no special fire-suppression equipment beyond code minimums.
- Suites where the door is between 45 m and 90 m from the street — residential sprinkler system, exterior strobe, and interconnected smoke/CO alarms are all required. Budget an incremental $15k–$30k.
- Suites where the door is more than 90 m from the street — typically not permitted; feasibility check first.
This is the single most commonly missed line item in owner-run cost estimates. A quick measure from the front lot line to the proposed suite door tells you which bucket you fall into.
Made-in-Toronto pre-approved plans
Toronto's Made-in-Toronto program offers pre-approved studio and two-bedroom designs for both garden and laneway configurations. Two concrete benefits:
- The design fee disappears.
- The permit application skips the building-design review — reviewers only check the site-specific components (site plan, servicing, grading). That's faster and safer.
See our pre-approved plans catalogue for the studio, one-bed, and two-bed floor plans we deliver end-to-end.
What these ranges do not include
The per-square-foot ranges above cover design, permits, foundation, servicing and construction of the suite itself. They typically exclude:
- HST — quoted separately, and the rebate treatment depends on whether the suite is for rental or family use
- Landscaping, fencing, decking and hardscaping beyond what the permit requires
- Appliances and furnishings
- Upgrades above standard finishes — millwork, tile, fixtures and flooring move the number quickly
- Tree removal or arborist-required protection measures, which are lot-specific
- Hydro service upgrades where the existing panel cannot carry a second dwelling
- Survey and legal costs, including any title work a development charge deferral requires
Ask any builder which of these are inside their number before comparing two quotes. The gap between an inclusive and an exclusive quote is routinely larger than the gap between two builders.
Rental income context
Well-finished two-bedroom garden suites in Toronto commonly rent around $3,000 to $3,300 per month; one-bedrooms and studios scale down from there. Illustrative market data — validate for your neighbourhood.
Frequently asked questions
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Disclaimer: Figures cited are market estimates provided for information only and are not a quote. Municipal rules, fees, and programs change — always verify current requirements with your local authority. Modular X provides exact pricing only after a site-specific feasibility review.