Architectural visualization showing precise oak, plaster, limestone, and steel detailing

More room, properly integrated

Home additions and infill construction in Ottawa

An addition works best when the new space improves the old house rather than simply making it larger.

What the service includes

Focus
Residential
Region
Ottawa, Ontario
Method
Pre-construction led

Westmere builds additions and infill projects that are planned around the existing home, property, and neighbourhood context. The work often involves complex junctions: new structure meeting old, occupied areas beside active construction, and updated systems serving both. We coordinate these interfaces early, with attention to grading, access, envelope continuity, temporary protection, and the way the completed floor plan will function. That discipline helps the addition feel like a resolved part of the home instead of an attachment.

Feasibility begins with the property. Zoning, access, existing conditions, servicing, and the proposed massing all influence what is practical before detailed design begins.

The connection between new and existing construction receives extra scrutiny. Structure, air and water control layers, floor levels, trim, and material transitions are planned as one coordinated detail.

Typical scope

  1. Rear, side, and second-storey additions
  2. Urban infill and replacement homes
  3. Existing-condition and constructability reviews
  4. Envelope, structural, and service integration
  5. Exterior works, grading, and final site restoration

Common questions

How do we know whether an addition is feasible?

A feasibility review considers zoning, site access, servicing, existing structure, desired area, and an initial investment range. It is the most useful first step before committing to detailed drawings.

Can an addition match the existing house?

It can either continue the original language or create a deliberate contemporary contrast. In both cases, proportions, rooflines, openings, materials, and weathering details need to be coordinated carefully.

Will Westmere coordinate permits and consultants?

Westmere can coordinate with the project architect, engineers, surveyor, and other consultants, track the required information, and support the permit and inspection process through construction.

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