Markham Fence Contractor · Reformity Inc.Fence Installation in Markham
Markham's fence limits are lower than many GTA cities'. By-law 277-97 caps rear and side fences at 1.8 m (6') and front-yard fences at 1.2 m (4'), and on a corner lot the fence along the exterior side yard is held to 1.2 m too. On a sloped lot the fence has to reasonably follow the grade. The City says these rules don't apply where a yard backs onto a railway line, major highway or commercial lot, as with homes backing onto the Stouffville GO line through Unionville and Markham Village.
Fencing · real projects
Recent fencing jobs in and around Markham.
Real Reformity jobs from our project files. Customer addresses are never published.
Fence permit drawing — Elevation, post-footing section and key plan. Click to enlarge.
Pool enclosure permit drawing
Drawn before we build
Drawn before we build in Markham.
Every fence starts as a dimensioned drawing: the run along your lot lines, post spacing, height, gates and the footing detail. You approve the exact layout before we dig, and a pool enclosure drawing goes in with the enclosure permit application.
Fencing permits in Markham
A regular fence built to By-law 277-97's heights needs no building permit in Markham, but a pool enclosure needs a permit before work starts and a new fence in a heritage district needs a Minor Heritage Permit; Reformity draws the fence layout, elevations and gate details and handles either application.
- Dimensions to your lot lines
- Materials, sizes and spacing
- Footing and base sections
- Code notes for the inspector
City of Markham rules
Fencing rules in Markham.
Checked against official municipal and provincial sources. Lots differ, so we confirm the rules for your address at the quote visit.
Fence height
By-law 277-97: 1.8 m in rear and side yards, 1.2 m in the front yard, and 1.2 m in a corner lot's exterior side yard — lower than many GTA cities.
City of Markham: fences & poolsPool enclosures
Minimum 1.2 m high, with a pool enclosure permit required (By-law 2015-96).
City of Markham: fences & poolsPrivate trees
A permit is required for trees 20 cm or more in diameter, measured at 1.37 m (By-law 2023-164).
City of Markham: tree permitsHeritage districts
Markham has four heritage conservation districts: Thornhill, Markham Village, Unionville and Buttonville. Most exterior changes there need a heritage permit. New or different fences, driveway changes, front-yard walkways and patios, and masonry cleaning or repointing are Minor Heritage Permit items (no fee), and a building permit can't be submitted until the heritage permit is issued.
City of Markham: heritage permitsHeritage permit details
On designated heritage properties, including every lot in a heritage district, fence repairs and repointing under 1.5 m² count as maintenance and need no permit. Grade changes, new fencing anywhere on the property, new or bigger parking areas and a new or replacement porch need a Minor Heritage Permit, and work can't start until it's issued.
Heritage Permit By-law 2023-20 (PDF)

What we build in Markham
Fencing that lasts decades.
- Cedar
- Vinyl
- Aluminum
- Chain Link
Neighbourhoods
Fencing across Markham.
- Unionville
- Markham Village
- Cornell
- Cathedraltown
- Berczy Village
- Thornhill (Markham)
- Milliken
- Wismer Commons
- Box Grove
- Greensborough
Markham Fencing FAQ
Quick answers.
A regular one doesn't: the City lists fences other than pool enclosures among projects that need no building permit, though they still have to meet By-law 277-97's height limits. A pool enclosure fence needs a permit before work starts, and in one of Markham's four heritage districts a new fence needs a Minor Heritage Permit.
By-law 277-97: 1.8 m in rear and side yards, 1.2 m in the front yard, and 1.2 m in a corner lot's exterior side yard — lower than many GTA cities.
Minimum 1.2 m high, with a pool enclosure permit required (By-law 2015-96).
Send the form on this page or call 437-241-6287. We reply within one business day, visit your Markham property to measure and check the City of Markham rules for your lot, and give you a fixed written price.
Free on-site quote
Planning fencing in Markham?
We'll measure, check the City of Markham rules for your lot, draw it up and give you a fixed written price. One business-day reply.