Custom Homes

What to Look for When Buying Land for a Custom Home in Ontario

7 min read·August 2026

Buying the right land is the foundation of a successful custom build. Most buyers focus on the home they'll build, but the lot determines everything — what can be built, at what cost, and how long it will take.

In Ontario's Simcoe County and GTA markets, land values have risen significantly, making due diligence essential before any offer.

Serviced vs. Unserviced Lots

A serviced lot has municipal water, sewer, hydro, and natural gas available at the lot line — ready to connect. An unserviced lot requires a private drilled well, a septic system, and often propane or a generator for heating.

The cost difference is significant: a septic system runs $15,000–$40,000+, and a drilled well adds another $5,000–$15,000. Barrie and Innisfil generally have serviced lots available in their growth areas. Rural Oro-Medonte, Collingwood-adjacent lands, and many Lake Simcoe waterfront properties are unserviced — factor those costs into your budget from day one.

Zoning, Setbacks, and Official Plan

Every lot is governed by municipal zoning bylaws that dictate what can be built, minimum setbacks from property lines and watercourses, maximum building height, and lot coverage limits. These rules are not suggestions — they determine exactly what your builder can place on the land and how close to the edges.

Always verify zoning with the municipality before signing an offer. In the Lake Simcoe watershed, additional conservation authority approvals from the Lake Simcoe Region Conservation Authority (LSRCA) may be required, adding time and conditions to any development approval.

Soil Conditions and Site Assessment

Poor soil conditions — fill, high water table, bedrock close to surface, or unstable ground — can dramatically increase your foundation and site servicing costs. Problems that aren't discovered until construction begins are expensive surprises.

A geotechnical investigation ($2,000–$5,000) is worth every dollar before purchasing rural or lakeshore land. Barrie specifically has areas of clay-heavy soil that require engineered foundation designs — something an experienced local builder will identify quickly during a site visit.

Waterfront and Environmental Constraints

Waterfront lots on Lake Simcoe, Kempenfelt Bay, and other bodies of water are subject to Shoreline Regulations under the LSRCA. Any development within 120 metres of the high-water mark requires a permit from the conservation authority — a process that can add months to your timeline.

Navigable water setbacks, fish habitat protections, Greenbelt Plan policies, and natural heritage features can all constrain what and where you build. These aren't deal-breakers, but they must be understood before purchase. Reference the LSRCA website and the Provincial Greenbelt Plan when evaluating waterfront and rural lots.

Lot Shape, Orientation, and Views

A lot's shape determines the buildable area and how efficiently a home can be positioned. Narrow, deep lots limit width; oddly angled lots make it difficult to orient a home efficiently. The best lots are wide enough at the street to allow a generous facade and deep enough to provide privacy from the road.

Solar orientation matters more than most buyers consider. A south-facing rear yard maximizes passive solar gain and natural light into living spaces. Prevailing wind direction, sight lines to neighbours, and privacy from adjacent lots all factor into a quality site assessment. A builder with local experience will walk the lot with you and advise on how the home should best be positioned before you commit.

Working with Your Builder Before You Buy

The smartest move any future custom home owner can make is engaging a builder before signing a purchase offer. A builder with local experience can review the lot, identify potential issues, and give you a rough estimate for site work costs — before you're legally committed.

At Campoli Custom Builds, we offer a complimentary lot review consultation to help clients make confident land purchase decisions. We'd rather flag a problem before you buy than discover it together during construction. Contact us before you sign.

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