Renovation & Construction in Toronto

Toronto's housing stock by era, and what each one needs

Much of the housing in the old City of Toronto predates the Second World War, and it shows in the details. Victorian bay-and-gable semis and row houses in Cabbagetown, Riverdale and Leslieville usually have solid double-brick walls with no cavity, plaster on lath, narrow frontages and a party wall shared with the neighbour. Insulating those walls from the inside has to be detailed so the brick can still dry, and any digging below the shared footing brings the house next door into the engineering.

Edwardian and 1920s detached and semi-detached houses in the Annex, Roncesvalles, High Park and the Beaches have more generous rooms but similar systems. The Electrical Safety Authority notes that knob-and-tube wiring was used in homes from the early 1900s to the 1940s and that many insurers will not cover a house that still has it. The City says a house built before the mid-1950s may have a lead water service pipe. Our guide to hidden costs in old Toronto homes explains how we price both.

East York's post-war bungalows and storey-and-a-half houses are simpler structures, which makes them frequent candidates for home additions in Toronto, especially second storeys, and for full rebuilds. Downtown condos are a different discipline again: the corporation's rules, elevator bookings and fixed plumbing stacks set the scope, as they did on our Tatlin condo renovation, where built-in storage and a sculptural island reworked a one-bedroom suite.

Permits and approvals in Toronto, as of 2026

Most Toronto properties are governed by the city-wide Zoning By-law 569-2013, though some lots are still subject, in whole or in part, to a former municipal by-law. Before Toronto Building treats a house permit application as complete, it needs an issued Zoning Applicable Law Certificate (ZALC), which confirms the drawings meet zoning and other applicable law. The 2026 ZALC fee for a new house or a house addition or alteration is $644.38, and each application includes up to three reviews.

Once an application is complete, the City's House stream reviews it within 10 business days. Incomplete applications have no review timeframe, which is why we plan 8 to 14 weeks for permits on a typical project: the time goes into ZALC comments, revisions and outside approvals. Electrical work runs separately, through a notification filed with the Electrical Safety Authority by the contractor doing the work. Our Toronto building permit guide lists the documents, and our general contractor service in Toronto shows how we manage the sequence.

If a design needs relief from the zoning by-law, it goes to the Committee of Adjustment, which sits in four panels; the Toronto and East York panel covers Wards 4, 9, 10, 11, 12, 13, 14 and 19. A minor variance must maintain the intent of the Official Plan and the Zoning By-law, be appropriate for the property and be minor. The 2026 fee is $2,228.98 for additions and alterations to houses of three units or fewer, and most appeals go to the Toronto Local Appeal Body. See our Committee of Adjustment guide.

Trees, ravines and heritage districts in Toronto

Toronto's tree rules catch many homeowners off guard. A permit is required to injure or remove a private tree 30 cm or more in diameter, measured 1.4 metres above the ground, and City street trees are protected at any size. A building permit does not authorize tree removal. Since September 1, 2026, healthy private trees over 61 cm in diameter fall into a new Distinctive Tree category that must be considered in permit review, and Council has endorsed lowering the protection threshold to 20 cm, with a staff report due in 2027.

Lots near the Don Valley, the Humber or the Lake Ontario shoreline can face two more layers. Inside a Ravine and Natural Feature Protection area, the City requires a permit to injure or remove trees of any size, alter grades, or build or replace structures and retaining walls, and new ravine permit fees apply from September 1, 2026. Separately, the Toronto and Region Conservation Authority regulates valley, shoreline and wetland lands under Ontario Regulation 41/24, and the City cannot issue a building permit until a required TRCA permit or clearance is in place.

Heritage is the third overlay. The City lists 24 designated heritage conservation districts, including Cabbagetown, Riverdale, Harbord Village, the East Annex, Wychwood Park, Yorkville-Hazelton and Rosedale. Inside a district, new construction, exterior alterations and additions need a heritage permit, while interior-only work and alterations not visible from the street generally do not. That keeps kitchens, bathrooms and basements simple and moves the design effort to rooflines, windows and front elevations.

What Toronto homeowners are building now

Space is the constant request. On semis and row houses that usually means a rear addition or a third floor tucked within the zoning envelope; on East York bungalows, a second storey. Basements are the other big lever. Lowering the floor by underpinning turns a damp cellar into real living space or a rental suite, and Toronto generally permits one secondary suite per dwelling unit in a detached house, semi or townhouse. Our basement renovation service in Toronto covers the engineering and suite rules.

Toronto's housing permissions have widened. Four-unit multiplexes are permitted city-wide, and since Council's June 2025 decision, up to six units are permitted in the Toronto and East York District. Council adopted city-wide laneway suite permissions in July 2019 and garden suite permissions in February 2022, with one ancillary building per lot holding either a garden suite or a laneway suite, not both. Our Toronto multiplex rules guide explains what each option needs.

Inside the house, kitchens and bathrooms drive most renovation budgets. Our Toronto work includes the Canoe renovation and extension, which removed interior walls and added a finished basement, the Davenport Road full renovation with its marble bathrooms and oak millwork, the Sultana kitchen in white shaker and quartz, and the Yonge Street bathroom with a curbless walk-in shower. See our kitchen renovation service in Toronto for how we plan that work.

What drives renovation cost in Toronto

Our 2026 ranges are the starting point. A full home renovation runs from about $150K for a mid-level refresh to $450K+ for a full gut with standard finishes, or roughly $200 to $450 per square foot for a full gut. Additions run $400 to $700 per square foot of new space, and ground-up custom homes $350 to $650 per square foot in construction. A bathroom renovation in Toronto runs $15,000 to $60,000+. The Toronto renovation cost guide has the scope-by-scope breakdown.

Toronto conditions decide where a project lands. Older systems come first: replacing knob-and-tube, galvanized supply lines or a lead service is rarely optional once walls are open. Structure is second, with party walls, underpinning that often needs a professional engineer's design and site review, and beams where interior walls come out. Access is third. Many downtown lots have no driveway, tree protection hoarding can take up the yard, and the noise by-law prohibits construction noise before 7 a.m. and after 7 p.m. on weekdays, before 9 a.m. and after 7 p.m. on Saturdays, and all day on Sundays and statutory holidays.

Time is the fourth driver. A minor variance adds months of carrying costs before work can start, so we test a design against the zoning by-law before drawings are finished. Rebates can offset part of the bill: Ontario's Home Renovation Savings Program offers rebates on upgrades such as insulation, windows and heat pumps, and the City's Basement Flooding Protection Subsidy rose to a maximum of $6,650 per property on May 1, 2026. Our Home Renovation Savings Program guide covers eligibility.

How Nexon Build runs a Toronto project

Nexon Build is led by three founding partners with more than 70 years of combined experience. Kash Varjavandi, founder and master builder with 30+ years in construction, manages timelines, coordinates trades and keeps clients informed. David Bocharov brings 20+ years in civil construction, including high-rise and multi-unit residential work, to complex builds. Fred Shik, our mechanical project manager, makes sure HVAC and plumbing are designed and installed right, which matters in houses where every system is being replaced.

We work on fixed-price contracts, so scope and price are agreed before demolition. Schedules, photos, selections and change orders sit in a Buildertrend client portal, and each stage is built to the Ontario Building Code and inspected by the City. Ground-up custom homes are enrolled in Tarion's new home warranty, and renovations carry our own workmanship warranty. Start with home renovation in Toronto, custom homes in Toronto or design-build in Toronto, or request a free estimate.