The all-in range
$16,000 – $18,000
Bump-out or detached garage · nothing load-bearing above the opening
If you searched “cost to combine two garage doors” or “cost to remove the post between garage doors,” this is the Canadian answer, in Canadian dollars.
All-in means one contract and one number. The range covers:
- Structural assessment, engineering and architect fees
- Centre post removal with temporary support
- Engineered beam, supply and installation
- Framing and exterior finishing (brick, lintel and brickmould; stone, stucco and siding equivalents)
- Modern custom-width double door and opener upgrade
- Site protection and disposal
Not included: the municipal building permit fee, typically a few hundred dollars depending on your municipality. We prepare and file the permit either way; the fee passes through at cost.
What moves the number?
Four things: what sits above the opening, the exterior material, the door you choose, and the final opening width. The biggest is the first. A bedroom above the garage means the beam carries a redesigned load path, so the engineering and the beam grow with it. That configuration is the majority of our work and is quoted individually at the free assessment; the answer changes in price, never in feasibility.
Permit fees and timelines by municipality
Structural widening requires a building permit everywhere in Ontario; a like-for-like door swap does not. Requirements differ by municipality:
| Municipality | Published permit fees | Drawings | Review timeline |
|---|---|---|---|
| Toronto | $214.79 minimum; residential interior alterations $11.53/m² (2025 schedule; rates increased July 31, 2025) | Existing and proposed plans plus stamped structural drawings. We prepare and file the full package. | Ontario's Building Code requires a decision on a complete house application within 10 business days. Allow longer where revisions are requested. |
| Mississauga | $244 residential minimum; alteration index $6.64/m²; $50 online application deposit, credited to the permit (2025 schedule) | ||
| Vaughan | $190 minimum (2025 rate); per-m² rates by scope of work | ||
| Brampton | $326.21 residential minimum; alterations $5.34/m²; door, new opening $133.61 each (2026 schedule) |
Figures from each municipality's published fee schedule, retrieved July 2026. The examiner sets the final classification and current-year rate at filing; for this scope, permit fees typically land in the low hundreds of dollars.
Your range, by text, within the hour
Answer the 60-second garage check. Strong candidates see their range on the spot; everything else arrives by text.
Cost questions, answered plainly
What does the $16,000 to $18,000 range include?
Everything except the permit fee: assessment, engineering and architect fees, post removal, the engineered beam, framing, exterior finishing, a modern custom-width double door, opener upgrade, and site protection and disposal. It applies where nothing load-bearing sits above the opening. .
What costs extra?
Municipal permit fees, typically a few hundred dollars. Premium door upgrades beyond the included modern double door are priced at the assessment. A room above the garage changes the engineering scope and is quoted individually. .
Why does a bedroom above the garage change the price?
The beam carries a redesigned load path, not just the roof, so the engineering and the beam itself are bigger. It changes the design and the range, not the feasibility. .
How do I get an exact price?
The 60-second check gets you a range fast; the exact number is confirmed at a free on-site assessment where the structure, beam requirements, and permit path are verified. No estimate by guesswork. .
Is the price the same across the GTA?
The work is priced the same across our service area. What varies is the permit: fees, drawings, and timelines differ between municipalities, and we carry that process either way. .
Garage door replacement cost vs. conversion cost
Replacement and conversion are two different jobs with two different price tags. A like-for-like garage door replacement, no structural work and no permit, typically runs in the low thousands. A two-to-one conversion is a structural project and stays in the $16,000 to $18,000 CAD range described above.
A new insulated 16-by-7 double garage door, installed, typically costs $2,000 to $4,500 CAD in the GTA. Installation alone, when you already own the door, is often $1,500 to $2,500 CAD. These are typical GTA ranges for planning purposes, not a quote for your specific door or opening.
The $16,000 to $18,000 CAD figure on this page is not a door swap. It is the full structural job: removing the centre post between two single doors, engineering and installing a load-bearing beam, filing the municipal permit, refinishing the masonry around the widened opening, and supplying one custom-width door. If your garage already has one opening sized for the door you want, you need a replacement, priced above, not a conversion. If you have two separate single doors and want one wide opening, that is structural work; see the full two-to-one conversion process for what is involved.
| Replacement (door swap) | Conversion (two-to-one) | |
|---|---|---|
| Scope | New door in an opening already sized for it | Post removed, beam engineered, opening widened |
| Typical price | $2,000 – $4,500 installed (install-only often $1,500 – $2,500) | $16,000 – $18,000 all-in |
| Permit required | No, for a like-for-like swap | Yes; typically a few hundred dollars extra |
Replacement figures are typical GTA market ranges for planning purposes, not a quote. The conversion figure is the authoritative range for this scope, detailed above.
Replacement and conversion, answered
How much does garage door replacement cost in the GTA?
A straight garage door replacement, no structural work, typically costs $2,000 to $4,500 CAD installed for a new insulated double door, or $1,500 to $2,500 CAD for installation alone if you supply the door. Those are typical GTA ranges, not a quote for your model. A two-to-one conversion is a different job and runs $16,000 to $18,000 CAD, because it also removes the centre post and adds an engineered beam.
How much does a new double garage door cost?
A new insulated 16-by-7 double garage door, installed, typically runs $2,000 to $4,500 CAD in the GTA. Installation alone, when you already own the door, is often $1,500 to $2,500 CAD. That price assumes the opening already exists at that width; widening two single openings into one wide opening is structural work, priced separately.
What does it cost to replace two garage doors?
Replacing two single garage doors like-for-like, each staying in its own opening, typically costs a few thousand dollars in total, roughly a single door's installed price times two. That is well under conversion pricing. Combining those same two doors into one wide opening is a different, structural job: it runs $16,000 to $18,000 CAD because it adds an engineered beam, a permit, and masonry work, not just new doors.
How much does it cost to convert two garage doors into one?
$16,000 to $18,000 CAD all-in, where nothing load-bearing sits above the opening, such as a bump-out or detached garage. That covers the structural assessment and engineering, centre post removal, the engineered beam, exterior finishing, and a custom-width double door. The only common extra is the municipal permit fee, typically a few hundred dollars. If a room sits above the garage, the beam design changes and the price is confirmed at a free assessment.
What does the $16,000 to $18,000 conversion price include?
It includes the structural assessment, engineering and architect fees, centre post removal with temporary support, the engineered beam supplied and installed, framing and exterior finishing, and a modern custom-width double door with an opener upgrade. It does not include the municipal permit fee, typically a few hundred dollars, which we still prepare and file for you. It applies where nothing load-bearing sits above the opening; a room above is priced individually at the free assessment.
Do permit fees add much to the cost?
No. Structural widening requires a building permit in every GTA municipality, and published fees for this scope typically land in the low hundreds of dollars, for example roughly $190 to $330 across Toronto, Mississauga, Vaughan, and Brampton on their current schedules. We prepare and file the full permit package either way, and the fee passes through at cost. It is a small fraction of the $16,000 to $18,000 conversion price.
Is a wider door worth it for resale?
For most GTA buyers, yes: one modern insulated double door reads current, parks two vehicles more easily than two narrow single doors, and photographs better for listings. Some buyers do prefer the look of two doors, so it is not universal. A premium insulated door also answers the heat-loss objection that comes up against combining two doors into one.
Ready to see if your garage qualifies?
Candidate status plus a project range. Photos can follow by text.