Built to plan
Framed from your architectural and engineered drawings, to the plan and the Ontario Building Code, not by rule of thumb.
Custom Framing
Duplex Framing
Duplex framing across Toronto, the GTA and the Golden Horseshoe, built to your drawings and the Ontario Building Code. Timberr Framing is licensed, insured and WSIB-covered, rated 5.0 on Google, with a workmanship warranty behind every job.
- Licensed, Insured & WSIB-Covered
- Backed by our workmanship warranty
- 5.0 on Google
Get your framing quote
Send the drawings, or just the address and what you are building. We will tell you what is missing before we price it.
5.0 on Google
Workmanship warranty, we stand behind our work Licensed, Insured & WSIB-Covered Completed to code & Ontario requirements Custom-framed to your plans Serving the GTA & surrounding area
What You Get
What to expect from duplex framing
Built to last
Engineered lumber, LVL/PSL beams, and connectors chosen for the spans and loads on the plans.
Quote-ready
Send specs, drawings, or photos and get a free, no-obligation site visit and estimate with no guesswork.
Code-conscious
Installation and site work completed in accordance with Ontario requirements.
Our Process
How the work moves from drawings to handoff
Ready to price duplex framing?
Send the drawings, or just the address and what you are building. We will tell you what is missing and what happens next.
What GTA clients say
5.0 · Verified reviews on Google B Brookevia Google
★★★★★
Timberr Framing did an excellent job with our commercial units! We'll definitely be using them again for future projects!
T Trudyvia Google
★★★★★
We have worked with Timberr Framing on a few projects, and they continue to impress with their great workmanship and reliable service in our commercial unit. We highly recommend them for all your metal stud framing needs!
W Williamvia Google
★★★★★
Highly recommend to anyone with a stacked townhome project! Outstanding craftsmanship once again Timberr Framing.
S Sokratisvia Google
★★★★★
I was impressed by Timberr Framing’s skilled craftsmanship during our commercial framing project. They delivered high-quality work and maintained strong structural integrity in our commercial development that required metal framing.
E Ericavia Google
★★★★★
Timberr Framing’s team was not only punctual and dependable but also demonstrated exceptional skills in both addition and commercial framing projects. We'll definitely hire them again!
C Cesarvia Google
★★★★★
Timberr Framing has an efficient process and always completes work on time. Their team is highly organized, and our team of developers are always satisfied with the final results.
How It Gets Built
More about duplex framing
Understanding duplex framing
The systems and conditions that change the work
A side-by-side duplex concentrates the dwelling-unit boundary in a vertical wall; a stacked duplex also relies on a horizontal floor-ceiling separation. That means your engineer may need to settle the load path before material is ordered.
Adding a secondary unit to an existing house is not automatically the same design exercise as a purpose-built duplex. Existing-building and secondary-suite provisions can apply, which means your quote carries the matching member layout, connector schedule and site handling.
A dwelling unit containing two or more storeys, including a basement, generally requires a 1 h separation from the rest of a Part 9 residential building, subject to the stated exceptions. That means you get the route supported by the drawings instead of a choice made from habit.
The secondary-suite alternative in OBC 9.10.9.16(4) uses continuous smoke-tight Type X gypsum protection and cannot be applied to an unrelated assembly by analogy. That means your following trades inherit that system's spacing, openings and limits.
What belongs in the scope
The frame must carry the building loads while preserving the dwelling-unit fire separations, openings and service routes shown in the permit design. So the duplex boundary is fixed before award. Municipal zoning permission and Building Code compliance are separate. Toronto's multiplex policy and Mississauga's additional-unit rules demonstrate that local permission is not uniform across Ontario. That means your quote can name exclusions and owner-supplied items instead of hiding them.
Side-by-side versus stacked arrangement changes whether the principal unit separation is vertical, horizontal or both, so measured duplex quantities control the takeoff. A conversion adds selective demolition, measurement and existing-condition resolution not present in a new frame. That means you can compare the selected member schedule rather than a generic allowance. Bearing lines, beam reactions, opening widths and engineered members change member and connection scope, so duplex coordination is visible before approval.
The mistake we want found before the work begins
A side-by-side unit wall laid out from the marketing plan can miss the structural and fire-separation line by one stud space. That small move changes bearing, penetrations and the inspected assembly through the full building height. We establish the boundary from the approved architectural, structural and separation drawings together.
Member and fastening decisions that affect the result
Loadbearing studs use Stud, Standard or No. 2 grade lumber under the Part 9 table, while non-loadbearing studs can use the listed lower grades. That means your installed member must match the grade or product shown in the design. Framing lumber is installed at no more than 19 percent moisture content, which means you can verify the material condition before it is enclosed.
Floor-joist end bearing is at least 38 mm unless the permitted ribbon-board support is used, which means your bearing and connection detail must preserve that capacity. Beam ends require at least 89 mm of even, level bearing unless the applicable span-table note says otherwise. That means you can trace the fastening requirement to the actual assembly.
Plans, sequencing, and site decisions
The hold point and the trades waiting after it
Ontario requires notice when Part 9 structural framing and the heating and air-conditioning ductwork and piping are substantially complete. That means your sequence must reach that visible hold point before finishes. The Code prescribes a two-day inspection response after notice, excluding weekends, holidays and closed-office days, which means you can plan the following trade around the stated response.
The local building department identifies and performs the required inspections; the permit holder must request them. That means your mechanical and electrical work may have to be complete before the framing review. Drywall and firestopping trades inherit the unit-boundary framing, supported edges and coordinated penetrations, which means you avoid reopening work the municipality needed to see.
Planning the work across the GTA
Ontario sets the building rules while the municipality administers the permit and inspection for the address. That means your approved set must settle a side-by-side duplex concentrates the dwelling-unit boundary in a vertical before work is covered. Your site decides the delivery, storage and lifting route for that system. So you get a different sequence for a clear subdivision lot, a tight infill lane or an occupied commercial unit.
What to send for a useful quote
Address, approved unit count, zoning confirmation, permit status and new-build or conversion scope, which means you give the estimator the current design basis. Coordinated architectural, structural, fire-separation and mechanical drawings, which means your takeoff can include the scheduled members and openings. Add the address, permit status and target start window, so you can separate what is ready to price from what still needs a decision.
Comparing framing quotes?
Ours names what we frame, what another trade supplies, and what has to be settled before we mobilise. Compare the scope, not two totals built on different assumptions.
Finished On Site
Framed on site and built to last
Clean framing, tight sequencing, and a tidy site, coordinated with concrete, drainage, openings, and surrounding trades, and completed to code where site work is in scope.
- Coordinated with the surrounding build
- Code-minded framing for real-world use
- Quote-ready support from plans to inspection
FAQ
Duplex Framing FAQ
Will duplex framing hold my construction schedule?
It stays on schedule when the approved unit boundary and bearing layout agree before framing starts. Municipal permission for two units does not approve the construction details.
What usually delays duplex framing after mobilisation?
An uncoordinated boundary or unsupported stacked wall causes the deepest rework. We verify both before floors and ceilings close.
What do the following trades inherit from this work?
Following trades receive two defined units with supported walls and the approved separation route left inspectable.
Who owns a framing conflict found on site?
Timberr owns documenting the conflict, protecting the affected work and getting it to the responsible designer or consultant. We do not hide an unapproved field change inside the handoff.
Not sure the drawings are ready?
Most are not, and that is fine. Send what you have and we will tell you what is missing before it costs you a week on site.
Our Work
View Our Projects See real projects across Toronto & Ontario
Custom homes, additions, renovations, and multiplexes, framed on site for builders, homeowners, contractors, and property teams.
Request a duplex framing quote
Send the current drawings, property address, permit status and target start. We will check the package around a side-by-side duplex concentrates the dwelling-unit boundary in a vertical, so you can resolve a missing structural, access or coordination decision before it becomes a site delay.
Backed by our workmanship warranty, we stand behind every job · Licensed, Insured & WSIB-Covered
Send your project details
Send the drawings, or just the address and what you are building. We will tell you what is missing before we price it.
Duplex Framing Across the GTA
View all service areas →Timberr Framing provides duplex framing, built to plan with quote-ready support across Toronto and surrounding Ontario communities.
Companies We've Worked With
Trusted by Leading Organizations
Timberr Framing supports plan-based framing for commercial, institutional, property, and builder-led projects across Toronto and Ontario.
Tim Hortons 
Subway 
University of Toronto 
Madison Group 
RioCan 
Women's College Hospital 
Starbucks 
Mazda 
TD Bank 
City of Toronto 
Popeyes Tim Hortons Subway University of Toronto Madison Group RioCan Women's College Hospital Starbucks Mazda TD Bank City of Toronto Popeyes