Reformity Inc.

Markham Exterior Contractor · Reformity Inc.Fencing, Decks & Interlocking in Markham.

Fences, decks, interlocking driveways and backyard landscaping for Markham homes — Unionville, Markham Village, Cornell and Berczy.

Call 437-241-6287

Licensed & insured · WSIB covered · $5M liability · Free on-site quotes in Markham

Free Estimate

Get a Markham quote.

Takes about 30 seconds. We reply within one business day.

Timeline

No obligation. We never share your details.

Prefer to talk? Call 437-241-6287

Working in Markham

Heritage streets to new subdivisions.

Markham ranges from heritage districts in Unionville and Markham Village, where materials and street-facing changes can need extra care, to newer planned communities like Cornell and Cathedraltown with rear-lane garages and compact backyards.

Compact yards in the newer areas make drainage and layout the main design problem: a deck, a patio and a fence on a small lot have to work together without pushing water toward the house or the neighbour.

Services in Markham

What we build here.

Property manager or facility owner in Markham? See commercial and industrial contracting. COIs & WSIB clearance on request.

City of Markham Rules

Know the bylaws before you build.

We check these on every Markham quote visit. Bylaws change and lots differ (corner lots, easements, ravine areas), so treat this as a starting point and confirm with the City of Markham for your address.

  • 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 & pools

  • Pool enclosures

    Minimum 1.2 m high, with a pool enclosure permit required (By-law 2015-96).

    City of Markham: fences & pools

  • Private 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 permits

  • Driveway widening

    Widening a curb cut or creating a new one needs a curb modification permit from the City.

    City of Markham: curb modification

  • Heritage & conservation

    Unionville, Markham Village and Thornhill have heritage conservation districts where street-facing changes can need heritage review. Valley lands are regulated by TRCA.

    TRCA

  • Deck permits

    Under Ontario's Building Code, a deck over 10 m² (about 108 sq ft) or attached to the house generally needs a building permit, and the City of Markham may set its own triggers based on height above grade. We confirm with the building department and pull the permit when one's needed.

    Ontario: building permits

Neighbourhoods

Across Markham.

  • Unionville
  • Markham Village
  • Cornell
  • Cathedraltown
  • Berczy Village
  • Thornhill (Markham)
  • Milliken
  • Wismer Commons
  • Box Grove
  • Greensborough

Local Guides

Costs, permits & bylaws.

Markham FAQ

Quick answers.

1.8 m (about 5'11") in rear and side yards and 1.2 m in the front yard — lower than the 2.0 m many neighbouring cities allow, so we size privacy fences to Markham's limit.

They can. Unionville, Markham Village and Thornhill are heritage conservation districts, where street-facing changes may need heritage review. We check before designing front-yard work there.

Send the form on this page or call 437-241-6287. We reply within one business day and book a free on-site visit in Markham to measure, check the bylaws and lot lines for your address, and give you a fixed written price.

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