Richmond Hill, Ontario. What could be built here, how big, how long it takes to approve, and what the land could be worth to a builder.
Illustrative estimate from public records and your inputs. Not an appraisal, a zoning opinion, or a guarantee of approvals. LSG Realty Inc., Brokerage.
The lot
Lot area
2,024 m²Property report: lot area from the public parcel data
Frontage and depth
21.1 m × 95.7 mProperty report: estimated from the lot lines (not a survey)
3 plausible scenarios
Scenario 1
Keep the house and add 2 units
Keep the existing house, add a basement or in-house suite and a garden suite.
Added floor area65–135 m² (700–1,453 sq ft)
Units2–3 units incl. the house
Approval pathAs of right (zoning review and building permit)
Timeline3–6 months approvals + 6–12 months construction
How we estimated it
Additional units
up to 2Property report: second units and garden suites screen
Second unit
65 m²Second unit (basement or in-house) about 65 m² (typical, needs confirmation)
Garden suite
70 m²Garden suite about 70 m² (check the municipal by-law) (typical, needs confirmation)
Timeline
approvals 3–6 months, construction 6–12 monthsApproval and construction months (typical, needs confirmation)
Key risks
Screen: Zoning is not in open data here: the screen assumes a house lot (detached, semi-detached or townhouse)
Greenbelt Plan area (Oak Ridges Moraine Conservation Plan area): new lots and units are limited.
Garden and laneway suites need fire access from the street and room for servicing; check both early.
Rough budget and residual land value
Enter your own figure. We could not verify the Altus Group 2026 Canadian Cost Guide ranges (free download at altusgroup.com/featured-insights/canadian-cost-guide); use its range for this building type in your market, or a builder's quote.
Your own estimate of what the finished space sells (or is worth) per sq ft. This public tool does not use MLS® sales data.
Design, permits, consultants, legal, insurance and marketing: commonly 15–25% of hard cost (typical, needs confirmation).
Second and third units are exempt. Rates: Development Charges Act, 1997 s. 2(3) to (3.3): second and third units in or beside a house are exempt · York Region development charges, By-law 2026-20, effective May 21, 2026, full water and wastewater (single/semi $84,718; multiple $72,392; apartment 700 sq ft or more $58,721) · Education development charge in York Region (public and Catholic boards), $8,934 per dwelling (combined guide effective July 1, 2026) Richmond Hill's single/semi charge is not in our table: add it to the per-unit figure. Area-specific charges are not included.
Construction loan rate (typical, needs confirmation).
On average about half the cost is drawn over the build (typical).
Builder's margin on revenue: commonly 12–20% (typical, needs confirmation).
Share of gross floor area that is sellable or rentable (walls, stairs and halls excluded).
Enter a hard cost and a sale value per sq ft to see the value added.
Scenario 2
New house with 2 additional units
Replace the existing house with a new house built with additional units (for example a basement suite and a garden suite).
Gross floor area1,133–1,417 m² (12,200–15,250 sq ft)
Units2–3 units
Approval pathAs of right (zoning review and building permit)
Timeline3–6 months approvals + 12–18 months construction
front 6 m, rear 7.5 m, sides 1.2 m: 1,537 m² buildableSide yards 1.2 m each (typical, needs confirmation)
Storeys
2 within 10 mTwo storeys within a 10 m height limit (typical, needs confirmation)
House GFA
708 m² × 2 = 1,417 m² (low end 80%)A house uses about 80% of the full two-storey envelope (typical, needs confirmation)
Additional units inside or beside it
up to 2Property report: second units and garden suites screen
Timeline
approvals 3–6 months, construction 12–18 monthsApproval and construction months (typical, needs confirmation)
Key risks
Greenbelt Plan area (Oak Ridges Moraine Conservation Plan area): new lots and units are limited.
Coverage and setbacks are typical values; the municipal by-law may differ.
Rough budget and residual land value
Enter your own figure. We could not verify the Altus Group 2026 Canadian Cost Guide ranges (free download at altusgroup.com/featured-insights/canadian-cost-guide); use its range for this building type in your market, or a builder's quote.
Your own estimate of what the finished space sells (or is worth) per sq ft. This public tool does not use MLS® sales data.
Design, permits, consultants, legal, insurance and marketing: commonly 15–25% of hard cost (typical, needs confirmation).
The new house gets a credit for the house it replaces; its second and third units are exempt. Rates: Development Charges Act, 1997 s. 2(3) to (3.3): second and third units in or beside a house are exempt · York Region development charges, By-law 2026-20, effective May 21, 2026, full water and wastewater (single/semi $84,718; multiple $72,392; apartment 700 sq ft or more $58,721) · Education development charge in York Region (public and Catholic boards), $8,934 per dwelling (combined guide effective July 1, 2026) Richmond Hill's single/semi charge is not in our table: add it to the per-unit figure. Area-specific charges are not included.
Construction loan rate (typical, needs confirmation).
On average about half the cost is drawn over the build (typical).
Builder's margin on revenue: commonly 12–20% (typical, needs confirmation).
Share of gross floor area that is sellable or rentable (walls, stairs and halls excluded).
Enter a hard cost and a sale value per sq ft to see the residual land value.
Scenario 3
Townhouses, 3–3 units (needs rezoning)
Replace the house with a row of 3 townhouses facing the street.
Gross floor area540–810 m² (5,813–8,719 sq ft)
Units3 units
Approval pathRezoning (Zoning By-law Amendment) and site plan; not permitted today
Timeline12–24 months approvals + 18–24 months construction
Not permitted under today's zoning. Shown to illustrate what an approval could allow; approval is not assured.
15 mTownhouse block about 15 m deep (typical, needs confirmation)
Floor area
270 m² × 2–3 storeysTwo to three storeys (typical, needs confirmation)
Timeline
approvals 12–24 months, construction 18–24 monthsApproval and construction months (typical, needs confirmation)
Key risks
Greenbelt Plan area (Oak Ridges Moraine Conservation Plan area): new lots and units are limited.
The current zone does not list townhouses: a rezoning is needed, and the outcome is not assured.
Freehold townhouses also need the lots created (consent or part-lot control) and often a common element (POTL) for shared parts.
Parking, garbage and fire access for each unit drive the layout.
Rough budget and residual land value
Enter your own figure. We could not verify the Altus Group 2026 Canadian Cost Guide ranges (free download at altusgroup.com/featured-insights/canadian-cost-guide); use its range for this building type in your market, or a builder's quote.
Your own estimate of what the finished space sells (or is worth) per sq ft. This public tool does not use MLS® sales data.
Design, permits, consultants, legal, insurance and marketing: commonly 15–25% of hard cost (typical, needs confirmation).
Every new unit after the first (credit for the existing house) is charged. Rates: City of Richmond Hill DC brochure, effective July 1, 2026 (other multiples $42,216; apartment and stacked townhouse, large $32,068). The single/semi figure could not be read: enter it from the City's by-law · York Region development charges, By-law 2026-20, effective May 21, 2026, full water and wastewater (single/semi $84,718; multiple $72,392; apartment 700 sq ft or more $58,721) · Education development charge in York Region (public and Catholic boards), $8,934 per dwelling (combined guide effective July 1, 2026) Richmond Hill's single/semi charge is not in our table: add it to the per-unit figure. Area-specific charges are not included.
Construction loan rate (typical, needs confirmation).
On average about half the cost is drawn over the build (typical).
Builder's margin on revenue: commonly 12–20% (typical, needs confirmation).
Share of gross floor area that is sellable or rentable (walls, stairs and halls excluded).
Enter a hard cost and a sale value per sq ft to see the residual land value.
Get a free feasibility review from an LSG land specialist
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Illustrative estimate from public records and your inputs. Not an appraisal, a zoning opinion, or a guarantee of approvals. LSG Realty Inc., Brokerage.
