Home • Our Services • Multiplex Builder Toronto
One lot. Up to six homes.
We design, permit and build homes with two to six units on Toronto lots, as a new building or by converting the house you own. Scroll down the building with us: from the roofline rules to the footings of a feasibility review.
Hanna Road, Leaside: a three-storey Toronto build
The rules that decide a project before design starts. Coverage and setbacks still apply, and a site exception can change any of them. [+]
units citywide
R, RD, RS, RM and RT zones
units in two areas
Toronto and East York, part of Ward 23
height limit
10.5 m for a raised five- or six-unit
parking spaces
Up to a fourplex, since February 3, 2022
bedrooms in a fourplex
R zone cap: three per unit
development charges
Units two to six; parkland exempt too
Density: the zone’s “d” limit does not apply unless a Chapter 900 exception sets one. A garden or laneway suite can share the lot.
One building on one lot with two to six self-contained homes, and at least one stacked over another. The by-law calls it a “detached houseplex”. A house with secondary suites is still a house; units side by side are townhouses or semis.
The City’s 2025 review found the average unit was about 106 m², and 65 percent of permits had two- or three-bedroom units or more. Family homes, stacked.
Of 452 multiplex permits the City issued from May 2023 to November 2024, three in four were renovation-type.
Keeps a lawful footprint a new build might not get. Watch basement height, hidden structure, the stair and old services. Not eligible for the GST rental rebate.
Weybourne Crescent, Lawrence Park
Meets today’s height, setback and coverage rules. Watch demolition, shoring, water service and trees. Four or more new rental units may qualify for the GST rebate.
Hillhurst Boulevard, Lytton Park
What this means for you: a tall basement, sound framing and a stair you can enclose favour conversion. A small, low or worn-out house often favours a new building. We price both for the same lot.
Several homes share structure, air and pipes. Each layer below keeps a problem in one unit from reaching the next.
Framing stage, Stibbard Avenue renovation, Lawrence Park
45-minute and 1-hour separations between units and around exits in the City’s plan sets. Sixplex sets add sprinklers; the fourplex sets we reviewed do not.
STC-rated walls and floors. Sound leaks through holes for pipes, ducts and pot lights, so we inspect every seal before drywall.
A protected route out of every unit, and interconnected alarms within it. On a conversion, the stair is placed first.
Electric, gas or hybrid heat for fourplexes; electric or hybrid for sixplexes. Separate meters are settled in feasibility.
Six units are allowed in Toronto and East York and part of Scarborough North. A raised lower home earns 10.5 m.
joists above established grade
clear height on the lowest level
of that level, holding a home
A converted house keeps new units inside the existing building; semis and townhouses cannot become sixplexes. Citywide sixplexes are under study only. Source: By-law 654-2025 [+]
Free City pre-approved plans: four- and six-unit sets for narrow and wide lots. We build from them when your lot suits, and design custom when it does not.
Six checks in order, because each one can cap what comes after it.
Label, Chapter 900 and any former by-law
Slopes change what fits under 10 m
Footprint and units per floor
30 cm and up needs a permit
Services sized for every unit
City certificate, variance if needed
development charges on units two to six, since July 2025 [+]
Parkland: units two to six exempt.
Suite charges: deferred up to 20 years, then forgiven.
Parking: none required up to four units.
GST rental rebate: new rentals with four or more units, started September 14, 2023 to end of 2030. [+]
Permit fees, 2026: $18.56 per m² plus $56.33 per unit.
Services: water and hydro for every unit.
Construction: priced from your feasibility report.
Demolition clock: up to $20,000 per unit if a new build runs past two years.
Unit count, risks
Stacking, exits
Sealed set, ZALC
Trades, orders
Inspections
A file per unit
Bedford Park, Toronto
Bedford Park, Toronto
Don Mills, North York
Oakwood Village, Toronto
Half of the City’s 2025 multiplex permits were in Davenport, Parkdale-High Park, University-Rosedale, York South-Weston and Toronto-Danforth. We build across Toronto, including North York and Etobicoke.
Up to four in residential zones citywide, and up to six in Toronto and East York and part of Scarborough North.
No. Up to four units are permitted in R, RD, RS, RM and RT zones citywide. You still need a building permit, and the design must fit the height, setback and coverage rules or get a minor variance.
A fourplex holds four homes and is allowed citywide with a 10 m height limit. A sixplex holds six homes and is allowed in Toronto and East York and part of Ward 23; a raised lower level can earn 10.5 m.
No parking spaces are required for a multiplex of up to four units, a rule in place since February 3, 2022.
No development charges apply to units two to six since July 2025, and parkland charges are exempt too. Permit fees, water and hydro services and construction are still on your budget.
Yes. A garden or laneway suite can share the lot with a multiplex, as long as the lot meets the suite rules.
A tall basement, sound framing and a stair you can enclose favour conversion. A small, low or worn-out house often favours a new building. We price both for the same lot.
Yes. The City offers free four- and six-unit plan sets for narrow and wide lots. We build from them when your lot suits, and design custom when it does not.
Send your address. We tell you how many units your lot can realistically hold before you pay for drawings.
