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
Multiplex Framing
Multiplex 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 multiplex 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 multiplex 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 multiplex framing
Understanding multiplex framing
The real variants and conditions that change the work
A duplex, triplex or fourplex is selected by unit count and zoning. But unit count alone does not decide OBC Part 9 versus the applicable Parts 3 to 6 design path. So your engineer may need to settle the load path before material is ordered. Your municipality's zoning bylaw sets how many units that lot can carry. Permitted unit counts vary from one municipality to the next. But no local zoning framework changes the Part 9 size test.
Side-by-side units concentrate separation work in vertical walls under OBC 9.10.9.16, while stacked units add horizontal floor-ceiling separations on top. So a stacked layout carries more framed assembly at the same unit count. A unit with two or more storeys, including a basement, generally needs a 1 h separation from the rest of a Part 9 building. So your two-storey unit inherits a heavier separation than the unit beside it.
A secondary-suite conversion has its own OBC alternative using continuous, smoke-tight Type X gypsum protection that cannot be copied onto a purpose-built multiplex. So a converted basement apartment and a new-build fourplex get framed and priced differently at the same unit count. Converting a house also adds OBC Part 11 coordination new construction skips.
Conventional dimensional lumber, I-joists, metal-web wood joists and plated wood trusses are all possible structural categories. But an engineered system locks you into that supplier's layout and connectors once ordered. So switching systems mid-project means new drawings, not a field substitution.
What belongs in the scope
Part 9 generally applies only where the residential building is no more than 3 storeys high and no more than 600 m2 in building area. So a larger multiplex moves onto the applicable Parts 3 to 6 design path. A party wall on a property line is normally a firewall unless the exceptions in OBC 9.10.11.2 apply. So your duplex may need firewall-rated construction where you expected a standard demising wall.
Unit count and whether units sit side-by-side or stacked change the quantity of required separations. So your stud, joist and blocking takeoff moves with the measured layout, not a flat per-unit rate. Storey count and supported loads change stud, beam and post requirements, and repeated kitchens and bathrooms increase the framed service routes your quote carries. Opening count and width change lintels, side studs and headers, so two fourplexes with the same footprint can still price differently.
The mistake we want found before the work begins
One unplanned duct crossing a rated unit boundary can force the same wall or floor edge open in every repeated unit. The framing quantity is not the real loss; the repeated inspection and trade resequencing is. We settle penetration zones before the first assembly is copied across the building.
Member and fastening decisions that affect the result
Loadbearing studs go in as Stud, Standard or No.2 grade lumber. Non-loadbearing studs can use Stud, Utility or No.3, so the grade stamp actually matches what that wall carries. Framing lumber has to arrive at 19 percent moisture content or less, because wet lumber shrinks and twists once enclosed behind drywall.
Stud size and spacing depend on unsupported height and the floors and roof loads a wall supports. Studs run continuous through a full storey with no site splicing. So a stacked unit gets a heavier stud schedule than the single-storey unit beside it. Beam ends need at least 89 mm of even, level bearing. A joist framed into a beam needs a hanger, connector or compliant ledger. So the load transfers as the design intends.
Plans, sequencing, and site decisions
The hold point and the trades waiting after it
Ontario requires notice once your Part 9 structural framing and HVAC ductwork are substantially complete, while a multiplex outside Part 9 hits its notice point at substantial completion of structural framing and HVAC rough-in instead. Ontario prescribes an inspection response within 2 days of that notice, excluding weekends, holidays and closed-office days. So a package ready on a Thursday should not sit waiting long.
Fire-separation work can carry its own OBC inspection stage, separate from structural framing, so we confirm the local schedule before covering any assembly. Your drywaller and firestopping trades inherit the stud separation lines we leave behind, so what we hand off is what they build from.
Framing multiplexes across the GTA
Ontario's OBC sets the framing and fire-separation rules, but your municipality decides whether a duplex, triplex or fourplex is even permitted on that lot. Each municipality across the GTA runs its own zoning framework for permitted unit counts, though none of them changes the OBC Part 9 size limit. So the same drawings can clear one municipality and still need Part 3 engineering in the next.
Your site decides the rest: an infill lot with tight access changes delivery and lifting logistics for engineered beams and trusses in a way a clear driveway never does.
What to send for a useful multiplex framing quote
Send the address, approved unit count, occupancy, zoning confirmation and permit status, plus the coordinated architectural, structural, fire-separation and mechanical drawings, beam and post schedules, with every revision. Include floor and roof layouts, truss drawings and any engineered-member details, and tell us who supplies fire blocking, firestopping backing and separation-board installation. For a conversion, add measured existing conditions and the OBC Part 11 design analysis, so nothing gets assumed.
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
Multiplex Framing FAQ
Will multiplex framing hold my construction schedule?
It stays predictable when the first unit is fully coordinated before repetition begins. We do not use production speed to multiply an unresolved detail.
What usually delays multiplex framing after mobilisation?
Misaligned bearing walls and unplanned rated penetrations create the largest schedule losses because both repeat. We verify those interfaces at the first module.
What do the following trades inherit from this work?
Your mechanical, firestopping and board crews receive repeated openings and boundaries that match the approved layouts, not a different problem in every unit.
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 multiplex framing quote
Send the current drawings, the property address, permit status and the start window you are working toward. We will check the package around your duplex, triplex or fourplex, flag any missing beam, post or fire-separation decision, and give you a scope you can actually price against.
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.
Multiplex Framing Across the GTA
View all service areas →Timberr Framing provides multiplex 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