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Rental Income Suites in Markham - Design, Permits, Construction
Rental Income Suites in Markham, Ontario: design, permit and build on a single contract. A typical 700 sq ft unit estimates at $276,500-$370,500 (about $395/sq ft), with $9,000-$15,000 including York Region charges in municipal approvals and a April-November construction season.
Homeowners across the GTA who want a second dwelling that pays for itself. We size, permit and build a legal rental suite on your existing lot so the unit meets Ontario Building Code fire separation and egress rules and can be tenanted from the day occupancy is signed off.
Service area
Markham, Ontario
York Region
Typical build estimate
$276,500-$370,500
about $395/sq ft in Markham
Municipal approvals
$9,000-$15,000 including York Region charges
quoted separately from the build
Build season
April-November
137 cm snow · -4.5°C winter avg
Frost depth
1.2 m
footing depth, OBC Part 9
Local market
338,503
residents · walkability 45/100
Rental Income Suites in Markham: local conditions
Unionville and Markham Village sit inside designated heritage conservation districts, so a rear-yard garden suite there needs Heritage Permit approval on top of the building permit - cladding, roof pitch and window proportion all get reviewed. Cornell and Wismer lots two concessions away have no such requirement. Markham permits additional dwelling units city-wide, but heritage designations in Unionville and Markham Village add a Heritage Section 42 review to rear-yard construction.
Mixed - heritage-district lots with strict design review, alongside large 1990s subdivision lots in Cathedraltown and Wismer with ample rear yards. Markham sees 137 cm of snow and -4.5°C winter averages.
Rental Income Suites on a Markham lot: what's involved
A unit built to rent is designed around durability and turnover: finishes that survive tenancies, a laundry hookup inside the suite, and metering arranged so utilities are not argued about later. We register the unit properly with York Region so it is a legal second dwelling from day one - an unregistered suite in Markham is uninsurable and unenforceable against a tenant. Markham's 338,503 residents and employers including IBM Canada and AMD Canada set the realistic rent, which is the number the whole build budget should be tested against.
Detached garden suite rented as a self-contained one-bedroom
Legal basement apartment with separate entrance and egress window
Laneway house tenanted year-round for long-term rental income
Second-suite registration and fire-code retrofit on an older home
Frequently Asked Questions
Everything you need to know about our services.
A typical 700 sq ft build in Markham estimates at $276,500-$370,500 - about $395/sq ft, set by $9,000-$15,000 including York Region charges in approvals, a 1.2 m frost-depth footing requirement and 137 cm of annual snow load. Final pricing follows the site visit.
Related service: Our ADU services
Markham permits additional dwelling units city-wide, but heritage designations in Unionville and Markham Village add a Heritage Section 42 review to rear-yard construction. Approval costs in Markham run $9,000-$15,000 including York Region charges, quoted separately from construction so the permit stage holds no surprises.
Related service: Our ADU services
Mixed - heritage-district lots with strict design review, alongside large 1990s subdivision lots in Cathedraltown and Wismer with ample rear yards. At 45/100 walkability, Markham suites usually keep one parking space: enough to clear the zoning review without surrendering the whole yard. We work regularly in Unionville, Milliken, Cathedraltown.
Related service: ADU Building Permit
Yes - a second dwelling has to be a legal, permitted unit with York Region before it is tenanted. An unregistered suite in Markham typically voids the property insurance, cannot be enforced under the Residential Tenancies Act, and becomes an open liability at resale.
Related service: Our ADU services
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In this municipality
ADU types available here.
Accessory Dwelling Units→Laneway Homes→Garden Suites→Basement Suites→Secondary Suites→ADU Construction→ADU Building Permit→Garage Conversions→ADU Plans→Detached ADU→Laneway House Design→Prefab ADU→Rental Income Suites→In-Law and Multigenerational Suites→Aging in Place→Backyard Home Offices→Real Estate Investors→Guest and Visitor Suites→Student and Young-Adult Housing→Short-Term Rental Hosts→Accessible and Barrier-Free Units→Garage Conversions→Prefab and Modular Buyers→Custom Architect-Led Builds→
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