Additions & Extensions in Toronto

At Forward Slash Toronto, we design and build home additions and extensions in Toronto that create meaningful space without compromising the character or performance of the existing home. Whether you’re adding a rear extension, a second-storey addition, or expanding laterally, these projects require careful planning, structural coordination, and a clear understanding of how new construction integrates with what’s already there.

Our focus is on building additions that feel natural — not tacked on.

Home Additions Designed for Urban Living

In a city like Toronto, expanding a home often means working within tight lots, zoning limits, and established neighbourhoods. We help homeowners make the most of what’s possible while navigating these constraints responsibly.

Our additions and extensions services include:

  • Rear and side extensions

  • Second-storey and partial second-storey additions

  • Additions over existing spaces (including garages)

  • Structural modifications and framing

  • Foundations and underpinning where required

  • Full interior integration and finishing

We coordinate all phases of construction to ensure the addition functions seamlessly with the rest of the home.

Design Coordination & Structural Planning

Successful additions start with good design and realistic planning. We work closely with architects, designers, and engineers to ensure drawings reflect site conditions, budget considerations, and buildability.

Key considerations include:

  • Zoning and bylaw compliance

  • Structural integration with the existing house

  • Mechanical and electrical upgrades

  • Insulation, air sealing, and building envelope continuity

By addressing these early, we help avoid costly revisions during construction.

Building Within Toronto Regulations

Additions and extensions are subject to permits, zoning review, and inspections. Many projects also require coordination with neighbours and careful site logistics.

We manage:

  • City of Toronto permits and inspections

  • Sequencing to minimize disruption

  • Clean, organized job sites throughout construction

Our experience with Toronto’s housing stock helps projects move forward with fewer surprises.

Additions Across Toronto Neighbourhoods

We build home additions and extensions throughout:

  • Downtown Toronto

  • Leslieville, Riverdale & East York

  • The Junction, Roncesvalles & High Park

  • North York, Scarborough & Etobicoke

Our work spans century homes, post-war houses, and more contemporary properties.

Expand Your Home With Confidence

If you’re considering a home addition or extension in Toronto, Forward Slash Toronto offers a grounded, design-aware approach that prioritizes build quality and long-term value.

Contact us to discuss your addition and explore the best way to expand your home.