Building Permit Drawings in Toronto

Second suites, renovations, additions and multiplex conversions for Toronto's older housing stock — permit-ready drawings for properties across Toronto, Etobicoke, North York and Scarborough.

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Toronto Houses Are Older — the Drawings Matter More

Much of Toronto's housing was built long before the current Ontario Building Code. Converting a century-home basement into a second suite, opening up a load-bearing wall, or adding units to a house is very different work in Toronto than in a new subdivision — existing structure, existing services and tight lots all have to be documented properly for the City to issue a permit. That documentation is our job.

Second Suite Permits

Adding a self-contained second unit inside an existing Toronto house — most often in the basement — requires drawings that deal honestly with what is already there: ceiling heights, existing stairs, fire separation between units and safe exits. We survey the existing conditions and produce a permit set that reflects your real house, not a generic template.

Basement Second Suites

Converting basements in older Toronto homes

Existing-Condition Drawings

Measured drawings of the house as it stands

Separate Entrances

Below-grade and side entrance drawings

Multiplex & Multi-Unit Conversions

Toronto permits more units on a residential lot than it used to, and many owners are looking at converting a single house into multiple dwellings. These are substantial projects — new unit separations, exiting, and often structural change — and they live or die on the quality of the permit drawings and code analysis behind them.

House-to-Multiplex Drawings

Converting single homes into multiple units

Building Code Analysis

How the Code applies to your conversion

Change of Use

Documentation when a building's use changes

Renovations & Additions

Removing walls, rebuilding a rear extension, adding a third storey — on Toronto's narrow lots these projects need careful drawings of both what exists and what is proposed. We prepare renovation and addition permit sets for detached, semi-detached and row houses across the city, including Etobicoke, North York and Scarborough.

Structural Alterations

Wall removals and interior reconfiguration

Rear & Third-Storey Additions

Adding space on tight urban lots

Laneway & Garden Suites

Detached secondary dwellings where lots allow

Toronto Building Permit Questions

Do you cover Etobicoke, North York and Scarborough?

Yes — they are all part of the City of Toronto, and permit applications there go through the same City of Toronto process. We prepare drawings for properties across all of them.

My house is nearly 100 years old. Is a second suite still possible?

Often, yes — but the honest answer depends on the house: basement height, stair locations and structure all matter. We start by measuring and drawing the existing conditions, then tell you what works, what needs modification and what it would take. That assessment happens before you commit to construction.

What does a Toronto permit application need from a designer?

A complete drawing set: site plan, existing and proposed floor plans, elevations and construction details, with the Ontario Building Code analysis to support them. We prepare that package and support the application through the City's review.

Planning a Toronto Project?

From a basement suite in Scarborough to a multiplex conversion downtown — start with a free consultation and a clear quote for the drawings.

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