Praime

Instant development feasibility

4065 Confederation Pky

Mississauga, 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
1,599 m²Property report: lot area from the public parcel data
Frontage and depth
44.7 m × 70.7 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
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

  • 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

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 area895–1,119 m² (9,638–12,048 sq ft)
  • Units2–3 units
  • Approval pathAs of right (zoning review and building permit)
  • Timeline3–6 months approvals + 12–18 months construction
How we estimated it
Lot coverage
35% × 1,599 m² = 560 m²Lot coverage 35% (typical, needs confirmation)
Setbacks
front 6 m, rear 7.5 m, sides 1.2 m: 2,420 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
560 m² × 2 = 1,119 m² (low end 80%)A house uses about 80% of the full two-storey envelope (typical, needs confirmation)
Timeline
approvals 3–6 months, construction 12–18 monthsApproval and construction months (typical, needs confirmation)

Key risks

  • 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

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, 5–6 units (needs rezoning)

Replace the house with a row of 6 townhouses facing the street.

  • Gross floor area1,080–1,620 m² (11,625–17,438 sq ft)
  • Units5–6 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.

How we estimated it
Units across the frontage
(44.7 m − 2 × 1.5 m) ÷ 6 m = 6Townhouse units at 6 m frontage each (Aurora Zoning By-law 6000-17, Table 7.2, R8)
Block depth
15 mTownhouse block about 15 m deep (typical, needs confirmation)
Floor area
540 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

  • 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: not in our table; enter your municipality's rate.

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

LSG Realty's parent company has 20 years of land and development work in the GTA. A land specialist will check the zoning, the numbers and the approval path with you, at no cost.

We send the specialist your contact details, this address, and the scenario summary above (not the budget figures you typed). See our privacy policy.

Illustrative estimate from public records and your inputs. Not an appraisal, a zoning opinion, or a guarantee of approvals. LSG Realty Inc., Brokerage.

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