Cost Range Snapshot
GTA core and secondary Ontario PSF bands, with hard cost, soft cost, and HST exposure separated where useful.
Construction Cost Guides for Ontario Commercial Projects
A library of building-type-specific cost guides anchored in Q4 2025 benchmark data. Each guide explains the math behind a Class D estimate: PSF range, regional development charge variation, regulatory triggers, and the line items that move the budget materially.
Use these guides before, during, or after running the calculator.
Run the Class D Calculator Read the Methodology
How to use these guides
Start with the building type, then test the assumptions.
Each guide covers one project type from the calculator's cost model and helps owners understand what belongs in an early feasibility budget.
Cost Drivers
Major scope items that move the budget, including envelope, structure, MEP, fit-out, equipment, schedule, and site constraints.
Regional Variation
Planning notes for Toronto, Mississauga, Brampton, Halton, and secondary Ontario markets where development charges and labour conditions vary.
Cost guides by building type
Ten Class D cost guides for Ontario commercial and industrial projects.
Each guide gives a hard-cost band for one building type at Q4 2025 benchmarks, with the scope assumptions, regional variation, soft-cost overlay, development charge exposure and regulatory triggers that move the number.
Warehouse Construction Cost - Ontario
Distribution centres, tilt-up shells, cold dock formats, site servicing, and Reg. 851 trigger overlap.
Open guideManufacturing Plant Construction Cost - Ontario
Light manufacturing versus heavy process plants, process utilities, crane and slab structure, PHSR and TSSA scope, and the separate equipment budget.
Open guideIndustrial Retrofit Construction Cost - Ontario
Renovating an existing industrial building: the renovation factor, existing-conditions allowances, designated substances, utilities, and OBC change of use.
Open guideCold Storage Construction Cost - Ontario
Refrigeration systems, insulated envelope, slab requirements, food-grade overlays, and industrial engineering triggers.
Open guideSelf-Storage Facility Construction Cost - Ontario
Drive-up versus multi-storey climate-controlled formats, security scope, and why development charge classification governs feasibility.
Open guideOffice Tenant Improvement Cost - GTA
Class A/B fit-out, base building condition, landlord coordination, schedule premiums, and finish-level variation.
Open guideMedical Office Construction Cost - Ontario
New medical office buildings and clinic fit-outs, the MEP premium over standard office, imaging and shielding, medical gas, and barrier-free scope.
Open guideQSR / Restaurant Construction Cost - GTA
Franchise standards, kitchen exhaust, equipment package, utility upgrades, inspections, and opening schedule pressure.
Open guideDaycare Construction and Fit-Out Cost - Ontario
Standalone centres and leased-space fit-outs, O. Reg. 137/15 space and outdoor play rules, washroom counts, and the Group A2 change of use.
Open guideLong-Term Care Building Cost - Ontario
MOH redevelopment, OBC Part 3, healthcare complexity, PSHSR exposure, FF&E, and commissioning allowances.
Open guide
Read alongside the guides
The budget layers every guide assumes.
The cost guides quote hard-cost bands. These pages explain what sits on top of them and how to read a Class D range before it goes into a pro forma.
Hard Costs, Soft Costs and Contingency
The three layers of a construction budget, the typical 18–28% soft-cost overlay, the two kinds of contingency, and the five gaps that most often break an early budget.
Read the guideHow Construction Cost Estimates Work
What Class D means under AACE 18R-97, the ±20–30% accuracy band, how benchmark rates and multipliers combine, and why a conceptual range is not a quotation.
Read the methodologyBudget Planning Resources
The hub for budget education: how an early budget is built, where feasibility-stage numbers go wrong, and the order in which to use the guides and the calculator.
Open the hubContract Models
How fixed-price, cost-plus and construction management change who carries contingency and cost risk once the budget becomes a contract.
Compare contract modelsWhen a cost guide points to engineering scope.
Some cost drivers need a qualified engineering review before the budget can be treated as reliable: structural changes, MEP tie-ins, PSHSR triggers, OBC Part 3 requirements, equipment installations, refrigeration systems, or sealed documentation for permits. ProWise Engineering is an important consultant resource when the estimate depends on those technical assumptions.
Connect with ProWise Engineering
Next step
Use the calculator, then move into a guide or inquiry.
If you are still testing feasibility, start with the Class D calculator. If the project has drawings, documents, or a target site, request a detailed estimate review.
Run the Calculator Request a Detailed EstimateClass D conceptual estimate per AACE International Recommended Practice 18R-97. Not a quotation. Not a basis for financing or contract value. Material decisions require qualified engineering and quantity-surveying review. Q4 2025 benchmarks include public and industry cost references used for early planning context.