Glenmorris St | Garden Suite Proposal

Cambridge

Property Type: Existing Detached Garage on a Duplex Lot
Scope of Work: Proposed Conversion of 480 sq. ft. 1-Storey Detached Garage into a Legal Garden Suite (ADU)

Project Overview:

Located in Cambridge, this project was a unique attempt to repurpose an existing 1-storey detached garage—approximately 480 sq. ft.—into a fully self-contained Garden Suite (Accessory Dwelling Unit). The main lot already contained a legal non-conforming duplex, which made this potential third unit a valuable opportunity to increase density and long-term cash flow.

Unlike other projects where the challenge lies in building code compliance, this one was all about navigating zoning bylaws. Although the structure already existed and the building envelope was not changing, the City of Cambridge required the project to conform to current zoning setbacks—as the garage was being converted into a new residential use.

Scope & Strategy:

• Proposed conversion of existing detached garage into a fully      livable, code-compliant garden suite

• Maintained the existing building footprint and height—no      exterior additions

• Designed a self-contained unit with kitchen, bathroom, and      open living/sleeping space

• Applied Ontario Building Code standards for new residential      dwellings

• Identified and addressed zoning deficiencies related to setbacks      and lot coverage

Challenges Solved:

• Engaged with municipal zoning staff to confirm the need for      minor variances

• Assisted property owners through the Committee of Adjustment     (CofA) process

• Owners represented themselves at the hearing, but despite      efforts, the application was denied

• Demonstrated that existing structure compliance does not      guarantee zoning relief under current policies

Investor Insights:

• This project highlights a critical nuance in Ontario zoning      regulations—converting an existing structure to a dwelling triggers      current zoning compliance, even if the shell remains unchanged

• While cities like Hamilton and Toronto allow direct permit      applications in similar situations, Cambridge required a minor      variance, creating added hurdles

• Outcome: Application denied; project is currently on hold     until further zoning relief is obtained or project strategy is modified

Current Status:

Project is on hold following unsuccessful minor variance approval. This serves as a cautionary example for investors: zoning interpretation and municipal differences matter—even when the structure already exists.