Home Addition Framing Ontario — Licensed, Insured & 5-Star Rated

Addition framing costs depend on the type of addition, square footage, and structural complexity.

A rear addition frame is generally the most straightforward and cost-effective. Second-floor additions cost more due to the structural requirements — the existing foundation and first floor must support the new load, which may require reinforcement.

Garage conversions and in-law suites vary depending on the scope of structural work required.

The most reliable way to get an accurate number is to contact Timberr Framing for a free, detailed written quote. We assess your plans and existing structure before pricing — no ballpark guesses.

Yes. Timberr Framing is fully licensed to operate as a framing contractor across Ontario, including all types of home addition framing.

We carry $5M in liability insurance, are registered with WSIB, and operate in full compliance with Ontario Building Code on every project. Our licensing and insurance documentation is available on request.

We frame all types of home additions:

• Second-floor additions — full upper storey builds
• Rear additions — bump-outs, kitchen extensions, family room builds
• Side additions — extending into your side yard
• Garage conversions and additions — garage-to-living conversions, new attached garages
• In-law suites and secondary suites — separate dwelling units within your home

If your project involves structural framing for a home addition of any kind, contact us to discuss.

Timeline depends on scope. A standard rear addition frame typically takes one to two weeks from start to completion. A full second-floor addition takes longer — typically two to four weeks depending on the size and complexity.

Timberr Framing provides a clear project schedule during the quoting process and maintains communication throughout the build so you always know where things stand.

In most cases, yes. Any addition that involves load-bearing changes, new foundation work, or a second-floor build will require structural engineering. Your municipality will require engineered drawings as part of the permit process.

Timberr Framing is experienced working with structural engineers and coordinates directly with them throughout the project. We frame to the engineer's specifications and ensure the work meets the requirements for inspection.

Yes — this is one of the most critical aspects of addition framing. A poor tie-in creates structural issues, water intrusion risks, and problems for every trade that follows.

Timberr Framing specializes in structural tie-ins between new additions and existing homes. We assess your existing framing, identify load paths, and connect the new structure properly — whether it is a rear bump-out, a side extension, or a full second floor.

Yes. Any home addition in Ontario requires a building permit from your municipality before construction begins. This includes second-floor additions, rear additions, side additions, garage conversions, and in-law suites.

As a licensed framing contractor, Timberr Framing builds every addition to Ontario Building Code and ensures all work is inspection-ready at handoff. Permits are typically handled by the homeowner or GC — we frame to the exact specs your permit drawings require.

A home addition adds new square footage to your home — a new room, a new floor, or an extension. A renovation modifies existing space without expanding the footprint — such as removing walls, re-framing interiors, or finishing a basement.

Timberr Framing handles both. For other framing needs, see our full framing services. For additions, you are in the right place.

Yes. Timberr Framing regularly works as a framing subcontractor for general contractors managing home addition projects across Ontario.

We understand the scheduling demands of residential construction and are experienced coordinating with other trades. If you are a GC looking for a reliable addition framing sub, contact us to discuss your upcoming work.

Timberr Framing provides home addition framing across Ontario, with dedicated service pages for Toronto, Mississauga, and Vaughan.

If your project is in an area not listed, use the form below and we are happy to discuss.

Yes. Ontario Building Code has specific requirements for secondary suites including fire separation, sound transmission ratings, separate egress, and minimum ceiling heights. The framing must account for all of these.

Timberr Framing understands the code requirements for secondary dwelling units and frames accordingly — including fire-rated wall assemblies, sound isolation framing, and proper egress window framing. All work is left inspection-ready.