Commercial Land Due Diligence Checklist in Ontario

A commercial land due diligence checklist in Ontario has to answer a different set of questions from a checklist for an income property: not “what does it earn?” but “what can lawfully be built here, what will it cost to get there, and what could stop it?” Land has no leases or operating statements to verify, so the review concentrates on planning status, servicing, physical and environmental conditions, natural-heritage and conservation constraints, title, and the costs and approvals a developer will face. This checklist is for buyers, lenders and sellers preparing for a buyer’s review of commercial, industrial and development land in the GTA and Southern Ontario. For the framework that applies to all commercial property, see the commercial real estate due diligence checklist.

1. Planning and Zoning

• Official plan designation and any secondary plan, site-specific policy or overlay affecting the property.
• Zoning by-law: permitted uses, density, height, setbacks, parking, and any holding provisions or special exceptions.
• Written confirmation of zoning and designation from the municipality, or a zoning compliance letter.
• Status of any plans or by-laws under appeal, including at the Ontario Land Tribunal.
• Existing approvals: site plan approvals, draft plans of subdivision, minor variances, consents and development agreements, and their conditions and expiry.
• Pending applications on the property or nearby that could affect it.
• Pre-consultation feedback from municipal planning staff, where available.

See official plan vs zoning and how to determine highest and best use.

2. Servicing and Infrastructure

• Availability, location and capacity of municipal water, sanitary and storm sewers, hydro, gas and telecom.
• Cost and timing of extending services, and who pays.
• Any servicing allocation or capacity constraints imposed by the municipality.
• Stormwater management requirements.
• Road access, entrances, turning movements and required road works or dedications.
• Planned infrastructure projects that could improve or delay servicing.

3. Municipal Charges and Requirements

• Development charges: the municipal and regional charges that apply under the Development Charges Act, 1997 and the local by-laws, and when they are payable.
• Parkland dedication or cash-in-lieu requirements under the Planning Act.
• Other fees and securities: engineering, planning and building fees, and financial securities under agreements.
• Property taxes: current bills, assessment and classification. MPAC’s 2026 assessments still reflect January 1, 2016 values.

4. Conservation Authority, Natural Heritage and Hazards

• Whether any part of the site is within a regulated area of a conservation authority, such as a floodplain, wetland, watercourse or valley. Under the Conservation Authorities Act and O. Reg. 41/24, certain development in regulated areas requires a permit.
• Natural heritage features and required buffers, including woodlands, wetlands and habitat, and any related studies.
• Species at risk and other environmental approvals that could affect timing.
• Flood risk and drainage, based on mapping and studies.
• Greenbelt or other provincial plan designations, where applicable.

These features can reduce the buildable area or require costly studies, so identify them before pricing.

5. Environmental Condition and Soil

• Phase I environmental site assessment prepared to CSA Z768, reviewing site history and adjacent uses. Land that was formerly industrial, agricultural, or used for fuel storage or fill needs particular attention.
• Phase II assessment where the Phase I identifies potential contamination.
• Record of Site Condition: Ontario’s O. Reg. 153/04 framework applies when a property changes to a more sensitive use, such as residential.
• Excess soil management: development often generates soil that must be managed properly under Ontario’s On-Site and Excess Soil Management Regulation, O. Reg. 406/19, which affects cost and planning.
• Fill placed on the property, and any records about it.

6. Geotechnical and Physical Conditions

• Geotechnical report: soil bearing capacity, groundwater and any conditions requiring special foundations.
• Topography, grading and drainage.
• Existing structures, tanks, wells, septic systems or debris that must be removed.
• Archaeological potential: in some areas an archaeological assessment may be required before development.
• Utilities and easements crossing the site.

7. Title, Survey and Legal

• Title search, easements, rights-of-way, restrictive covenants and encumbrances.
• Up-to-date survey and legal description, including area and dimensions.
• Access rights and any shared-access or maintenance agreements.
• Rights of neighbours, tenants or others, such as leases, options or rights of first refusal.
• Mortgages, liens and other claims that must be discharged at closing.

8. Financial Feasibility

• A residual land value analysis using supported construction costs, revenues, timing and required profit.
• Carrying costs during approvals: property tax, interest, consultants and fees.
• Sensitivity testing on costs, revenues and approval timing.
• Financing conditions and lender requirements.

See how to value commercial land in Ontario.

9. Transaction Terms

• Conditions in the agreement of purchase and sale tied to approvals, environmental results and financing, with realistic deadlines.
• Access rights for the buyer’s consultants to test and survey.
• Land transfer tax, paid by the purchaser: for non-residential property, 0.5% up to $55,000, 1.0% from $55,000 to $250,000, 1.5% from $250,000 to $400,000 and 2.0% above.
• HST treatment of the purchase under CRA guidance on commercial real property.
• Closing adjustments and any vendor take-back arrangements.

Common Mistakes

• Assuming an official plan designation is the same as zoning permission.
• Skipping written zoning confirmation.
• Underestimating servicing cost and timing.
• Overlooking conservation authority, floodplain or natural heritage constraints.
• Ignoring excess soil and environmental cost.
• Setting due diligence deadlines shorter than approvals or studies can be completed.

Frequently Asked Questions

How long does land due diligence take?

It depends on the site. Environmental, geotechnical and planning reviews often set the schedule, so negotiate conditions with realistic timelines.

What is the most important item?

Usually planning status: what can lawfully be built, and what approvals are needed, since it drives value more than any other factor.

Do I need a planner?

For sites where value depends on approvals, yes. A planner can assess feasibility and likely timing.

What are development charges?

Charges imposed by municipalities to help pay for growth-related infrastructure, calculated under local by-laws and due when specified in the by-law or agreement.

Do conservation authorities affect my land?

They may, if part of the site is in a regulated area such as a floodplain or wetland, in which case a permit may be needed for development.

Who pays land transfer tax?

The purchaser generally pays Ontario land transfer tax.

Conclusion

Land due diligence tests what can be built, what it will cost and what could stop it, and the answers depend on planning, servicing, environmental and natural-heritage facts that are not visible on a site visit. Buyers who organize the review by category and sellers who assemble the documents in advance protect themselves from late surprises. If you are buying or selling land in the GTA or Southern Ontario, a property-specific valuation and market strategy can help you understand your options before entering the market.

Sources and Further Reading

• Government of Ontario: A Citizen’s Guide to Land Use Planning: The Planning Act
• Government of Ontario: O. Reg. 41/24, Prohibited Activities, Exemptions and Permits
• Government of Ontario: O. Reg. 406/19, On-Site and Excess Soil Management
• Government of Ontario: Development Charges Act, 1997
• Government of Ontario: O. Reg. 153/04, Records of Site Condition
• Government of Ontario: Calculating land transfer tax

This article is general information and is not legal, planning, engineering or environmental advice. Consult qualified professionals about your specific property and transaction.