Garden Suite Markham

Professional Garden Suite in Markham

Last updated: March 12, 2026

Markham permits detached garden homes under its comprehensive Zoning By-law 2024-19, which specifically allows Additional Dwelling Units on most residential lots. Konstruction Group handles the framing, insulation, and drywall for garden suite builds across Unionville, Cornell, Berczy, and Cathedraltown — taking your project from foundation to paint-ready walls with one coordinated team.

Markham Garden Suite Regulations

Markham's Garden Homes By-law 2024-19 specifically permits detached additional dwelling units — what Markham officially calls "garden homes." The by-law requires a minimum 1.5-metre rear setback, and the maximum footprint depends on your lot size. Markham has actively positioned garden suites as part of its housing affordability strategy, making the approval process relatively straightforward compared to some neighbouring municipalities. Building permits are required through the City of Markham, and all construction must meet Ontario Building Code standards including fire separation, energy efficiency, and accessibility provisions where applicable.

Our Markham Garden Suite Services

• Complete Wood Framing – Floor platforms, stud walls, and roof structures framed to Markham's lot-based footprint allowances under By-law 2024-19, with the 1.5-metre rear setback built into every layout
• Steel Beam & Column Installation – Steel beams and posts placed per your engineer's load path calculations, allowing open living and kitchen areas suited to Markham's multigenerational garden home designs
• Spray Foam Insulation – Closed-cell or open-cell foam applied to exterior walls and rim joists, meeting the energy efficiency standards Markham requires for new garden home construction in York Region
• Batt & Blown-In Insulation – Mineral wool batt or blown-in cellulose for interior partitions and attic cavities where your Markham garden home plans do not specify spray foam
• Drywall Installation & Finishing – Boarding, taping, and Level 4 finishing throughout the unit — including required fire separations between the garden home and any accessory structures on Markham properties

Why Markham Is Embracing Garden Suites

Markham is one of the most proactive municipalities in the GTA when it comes to garden suite policy. The city views garden homes as a practical solution to its housing shortage, particularly for multigenerational families — a common household structure in Markham. Neighbourhoods like Unionville, Berczy, and Angus Glen feature properties with deep lots that accommodate garden suites within setback requirements. The Cornell and Box Grove communities offer newer homes with planned rear yards. With GO Transit service at Markham and Unionville stations, garden suites also appeal to renters commuting to downtown Toronto.

Rental Income Potential in Markham

A one-bedroom garden suite in Markham rents for approximately $2,200 to $2,600 per month based on 2025 CMHC and rentals.ca data for York Region. That translates to $26,400-$31,200 in annual gross rental income. With construction costs of $250,000-$450,000, a Markham garden suite delivers a gross rental yield of roughly 8-9% at midpoint costs — among the strongest returns in the GTA garden suite market. Markham's larger lot-based footprint allowances mean homeowners can build bigger units that command higher rents, while the city's multigenerational housing demand provides an alternative to rental income through family use.

Understanding Markham's Lot-Based Footprint Rules

Unlike municipalities that set a single maximum square footage, Markham ties the permitted garden home footprint to your lot size. Larger lots are allowed larger units, while smaller lots have tighter footprint limits. This approach ensures garden suites remain proportional to the property. Before beginning design, we recommend confirming your maximum permitted footprint with Markham's planning department. Our team works closely with your architect or designer to ensure the framing plan respects the approved footprint and all required setbacks.

Why Choose Konstruction Group

• GTA-Wide Garden Suite Experience – Our portfolio spans garden homes and suites across York Region, including Markham builds that follow the city's lot-proportional footprint rules
• Three Trades, One Contract – Framing, insulation, and drywall delivered under a single contract means your Markham garden home moves from structure to paint-ready without gaps between trades
• $10M Liability Insurance – Our policy covers every garden home site in Markham, giving homeowners in Unionville and Berczy confidence that their property is fully protected
• WSIB Compliant – Active WSIB registration for all crew members — Markham homeowners carry zero exposure to on-site injury liability during their garden home build
• 1-Year Warranty – From the floor framing to the final coat of drywall compound, all work on your Markham garden home is backed by our twelve-month written warranty