280 Queen Mary Street | 9-Unit Residential Development

At 280 Queen Mary Street, NCTL Group is transforming an underutilized residential property in Ottawa’s Overbrook neighbourhood into a thoughtfully planned nine-unit urban infill development. The project replaces an existing detached dwelling with three contemporary, three-storey townhouses, each incorporating a principal dwelling and two secondary dwelling units.

Rendering of the rear of 280 Queen Mary Street showing timber exterior stairs and walkways on each level of the townhouses

Location

280 Queen Mary Street, Overbrook, Ottawa, Ontario, Canada

Size

6900 Sq Ft

Type

Multi-Residential Rental Development

Partner on this project

Overview

Located in Overbrook, within Ottawa’s Rideau-Rockcliffe Ward, 280 Queen Mary Street demonstrates how underutilized residential properties can be reimagined to create additional housing within established communities. The development comprises three three-storey townhouse dwellings, providing a total of nine residential units. The proposed unit mix includes six two-bedroom units, one three-bedroom unit, and two five-bedroom units, offering a variety of housing configurations for different household needs. With a focus on efficient land use, thoughtful intensification, and neighbourhood integration, the project reflects NCTL Group’s approach to creating additional housing while making use of existing urban infrastructure.

Project Highlights

Nine residential units developed from one existing detached dwelling.
Three contemporary, three-storey townhouses designed to accommodate multiple households.
Diverse housing mix comprising six two-bedroom units, one three-bedroom unit, and two five-bedroom units.
Urban infill development that makes more efficient use of existing residential land.
Planning approvals obtained, including minor variances granted on September 29, 2023, and consent approvals for the creation of three parcels.
Thoughtful site planning incorporating rear-yard access and soft landscaping.
Neighbourhood-focused development that supports housing diversity and residential intensification in Overbrook.

Project Details

Location: Overbrook, Ottawa, Ontario, Canada
Total Square Footage: 6900 Sq Ft
Property Type: Multi-Residential Rental Development
Project Type: Urban Infill Development
Status: Development planning; current status old structure demolished with Ground breaking estimated for October, 2026.
Developer: NCTL Group
Ward: 13 – Rideau-Rockcliffe
Development Type: Residential urban infill
Project: 280 Queen Mary Street
Ward: 13 – Rideau-Rockcliffe
Development Type: Residential Urban Infill
Total Units: 9 residential units
Buildings: 3 townhouse dwellings
Building Height: 3 storeys
Housing Format: Townhouses with secondary dwelling units
Existing Property: Two-storey detached dwelling
Zoning: R4UC
Planning Approval: Minor variances granted on September 29, 2023.
Severance: Consents granted for the creation of three parcels and an associated rear-yard access easement.

The City of Ottawa’s Committee of Adjustment records identify the property as 280 Queen Mary Street, within Ward 13 – Rideau Rockcliffe, with R4UC zoning.

Aerial view of a residential neighbourhood with apartment buildings and tree-lined streets

Investor Perspective

280 Queen Mary Street illustrates the potential of small-scale urban redevelopment to create additional housing through strategic land use and thoughtful planning.

By transforming a single detached residential property into a nine-unit development, the project demonstrates how identifying underutilized land and navigating municipal planning requirements can unlock new residential opportunities within established neighbourhoods.

The development reflects several important considerations in urban real estate investment, including strategic property acquisition, planning and approval processes, efficient land utilization, and housing diversification. Its mix of two-, three-, and five-bedroom units also provides different residential configurations to serve a range of household needs.

For NCTL Group, the project represents an approach to real estate development that combines careful planning, responsible land use, and a long-term perspective on creating residential assets that contribute to the surrounding community.

Why This Project Matters

Growth From Within

The challenge facing growing cities is not simply to build more.

It is to build more thoughtfully.

280 Queen Mary demonstrates how an existing residential property can be reimagined to provide significantly more housing while remaining at a neighbourhood scale.

The project takes an established urban site and introduces:

More homes.
More housing choice.
More efficient use of land.
More opportunity for neighbourhood growth.

This is the essence of responsible urban infill.

Community Impact

01 — Additional Housing
Nine residential units increase housing availability within an established Ottawa neighbourhood.

02 — Housing Diversity
The planned mix of two-, three- and five-bedroom units provides different housing configurations for different household needs.

03 — Missing-Middle Approach
The project uses a townhouse format to introduce greater residential density while maintaining a low-rise, neighbourhood-oriented built form.

04 — Efficient Land Use
A single existing detached dwelling is transformed into a multi-unit residential development, making more productive use of serviced urban land.

05 — Neighbourhood Intensification
The development contributes to Ottawa's broader objective of accommodating growth within established urban areas.

06 — Landscaping & Tree Planting
The project includes soft landscaping intended to support new tree planting and improve the site's landscape treatment.

07 — Existing Community Connections
Residents will become part of an established neighbourhood with existing transportation, services and amenities rather than creating an isolated new community.