Can I Build on Vacant Rural Land in Ontario? Zoning and Permits

Buying vacant rural land is often the first step toward a house or cabin. But owning the land does not automatically mean you can build on it. You may need a building permit from the municipality's building department, and zoning approval, conservation authority approval or heritage approval may also be required before a permit is issued.

This article walks through the main ones in Ontario: zoning and the building permit, conservation authority approval, shore land permits, and the practical items such as septic systems and driveway entrances. Your property may need only some of them, so it is worth checking before you commit to a purchase.

Start with zoning

Zoning is the municipality's rule about what can be built on a property and for what use. It matters because zoning is treated as 'applicable law' for a building permit. If your project needs a zoning change or a minor variance, no permit will be issued until you obtain that approval.

Before you buy, ask the municipality what the land is zoned for, whether a dwelling or a seasonal cabin is allowed, and what setbacks and accessory-building rules apply. Rural land is sometimes zoned for farming or other uses that do not allow a new home. A lawyer can help you build a zoning check into your purchase agreement.

When you need a building permit

As a general rule, you need a municipal building permit before you build a new structure over 10 square metres, add to or renovate a building, change its use, excavate or lay a foundation, or install, alter or repair a septic system. Permits come from the municipality's building department.

Building without a required permit is an offence under the Building Code Act, 1992. An individual can be fined up to $50,000 for a first offence and up to $100,000 for later offences, and a corporation up to $500,000 for a first offence and up to $1,500,000 for later offences.

There is an exception to the 10 square metre rule for small sheds. Under the 2024 Building Code, a shed needs no permit under section 8 of the Building Code Act if it is no more than 15 m² in gross area, one storey or less, not attached to any building or structure, used only for storage accessory to a principal building on the lot, and has no plumbing. A cabin, or a shed on vacant land with no principal building, does not qualify. Official guidance does not always state the size limits the same way, so before you build, it is worth confirming with your municipality's building department how they apply to your project.

In unincorporated areas, building permits and inspections are not available, but every building there must still comply with the Ontario Building Code. If a permit is refused, technical Building Code issues can be appealed to the Building Code Commission, while other legal issues, such as how zoning is interpreted, go to a judge of the Superior Court of Justice.

Conservation authority and shore land approvals

Under the Conservation Authorities Act and its regulations, a conservation authority permit is needed for development and some other activities in regulated areas, including floodplains, shorelines, wetlands and watercourses. Conservation authority or heritage approvals may also be needed before a building permit is issued.

A conservation authority must confirm within 21 days whether a permit application is complete. If it refuses a permit or adds conditions you do not accept, you can appeal to the Ontario Land Tribunal within 90 days of the decision.

Waterfront land adds another layer. Most lake and river beds in Ontario are Crown land, and a Public Lands Act work permit from the Ministry may be needed to build a structure, such as a dock or boathouse, in physical contact with more than 15 m² of Crown or adjacent shore lands. A conservation authority or municipal permit does not replace a Ministry work permit when one is required.

Septic, driveways and other practical issues

• Septic: every septic installation, repair or upgrade needs a permit and must be inspected.
• Highway entrance: a permit from the Ministry of Transportation is needed to build a new entrance onto a provincial highway or change an existing one within MTO Controlled Areas, and entrance permits do not pass with title.
• Shore road allowance: a cottage lot that fronts a shore road allowance does not reach the water's edge unless the allowance has been closed and conveyed to the owner.
• Municipal drains: these are not registered on title but can restrict a property, and buyers should ask the municipality for written confirmation.

Entrance permits for municipal or county roads come from the municipality under its own by-laws, so requirements and fees vary.

What to do next

• Ask the municipality for the zoning and any official plan designation before you waive conditions.
• Ask the conservation authority whether any part of the land is in a regulated area.
• Confirm legal road access, and check whether a shore road allowance or provincial highway entrance is involved.
• Check septic feasibility and well locations early.
• Have a lawyer review the agreement so the sale depends on the approvals you need.

Frequently asked questions