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Doors & Locks

Interior Door Installation in Toronto & the GTA

Interior Door Installation — doors & locks work in a Toronto home

Interior door installation changes a home more than almost any other swap — hollow flat slabs from the 1970s out, crisp panel doors in — but door hanging is unforgiving work. A door is a large moving panel that has to clear its frame by a few millimetres on every side, latch at exactly one point, and keep doing it through Toronto's humidity swings. Hung carelessly, it binds, gaps unevenly or won't stay closed, and no amount of paint hides that.

There are two very different jobs under this heading. Replacing just the slab means transferring hinge and latch positions onto the new door precisely — routing hinge mortises to the right depth, boring the handle at the correct backset — because the existing frame dictates everything. A prehung door installation replaces frame and door together: the old jamb comes out, the new unit gets shimmed plumb and square in the rough opening (which is never plumb or square in a real house), fastened through the shims, and trimmed out with casing. Prehung is the better path when frames are damaged or the old openings were never right; slab swaps make sense when frames are good and you want the trim untouched. If you are searching for door installation because an old door is past repair, this is the page; if the door is sound but sticks, drags or will not latch, a door repair visit usually fixes it for less. Exterior entry doors are a different product with weather sealing and security hardware, and they sit outside this service.

For a quote, tell us how many doors, whether you want slab-only or full prehung replacement, the sizes (width of each existing door helps — older homes are full of odd sizes), and the style you're after. Photos of a typical door and its frame let us spot complications like out-of-square openings or layered flooring. Barn door installation and French door installation are quoted the same way — photos of the opening and the wall beside it.

What our interior door installation service includes

  • Prehung door installation, including old frame removal and new casing
  • Slab door replacement into existing frames, with hinge and latch fitting
  • Replacing interior doors throughout a whole home or floor
  • Barn door installation with proper rail blocking and soft-close hardware
  • French door installation for dens, dining rooms and offices
  • Bifold and closet door installation and adjustment
  • Hinge mortising, handle boring and latch installation
  • Door knob, lever and privacy lock installation
  • Trimming doors to height for rugs, carpet and uneven floors
  • Casing installation, caulking and paint-ready finishing

Interior Door Installation cost in Toronto: what affects the price

  • Slab swap versus prehung — reusing a good frame is quicker per door, while prehung replacement adds demolition and casing but corrects every old sin in the opening
  • How square the openings are — older GTA houses have settled, and racked openings take shimming and fitting time that new builds don't
  • Number of doors — whole-home replacements are dramatically more efficient per door than one-offs, since setup and tooling are shared
  • Door sizes — standard sizes install directly, and the odd widths common in older homes mean trimming or special-ordering
  • Door style and weight — hollow-core doors handle easily, while solid-core and glazed French doors are heavier, less forgiving and slower to fit
  • Barn door walls — sliding doors need solid blocking in the wall for the rail and clear wall space beside the opening, which we confirm before ordering hardware
  • Finishing expectations — primed doors needing paint, caulked casings and filled nail holes add a finishing stage beyond the carpentry

Every home is different, so we don’t publish flat prices — the quote is free and based on your actual job. See how handyman pricing works in the GTA.

How a interior door installation job works with us

Describe the job

Tell us about the interior door installation in your own words and add a few photos from your phone — sizes and wall or surface type help.

Get a free quote

We review the details, ask a question if something is unclear, and come back with a quote. No obligation.

Book a visit

If you go ahead, the visit is scheduled at a time that suits you — with licensed trades where Ontario law requires them.

Interior Door Installation questions from Toronto homeowners

Should I replace just the door slab or the whole prehung unit?
Look at your frames. If the jambs are solid, square and undamaged, a slab swap keeps your existing trim and costs less per door. If frames are chewed up, out of square, or the doors have never closed nicely, a prehung unit resets everything — new jamb, perfectly fitted door, fresh casing. In practice many homes mix both: prehung where frames are bad, slabs where they're fine. We'll recommend per door.
Can you match new doors to my home's existing style and sizes?
Yes. Panel styles from the major manufacturers cover most looks, and we measure every opening individually rather than assuming they match — older Toronto homes routinely hide three different door widths on one floor. Non-standard openings get a trimmed standard door or a special order, whichever serves better. If you're keeping some original doors, we pick profiles that sit comfortably beside them.
What does a barn door need that a regular door doesn't?
Three things: structure, space and honesty about privacy. The rail carries the door's whole weight, so it must anchor into solid blocking or studs — not just drywall. You need clear wall beside the opening for the door to slide onto, with no switches, vents or art in the path. And a barn door doesn't seal or lock like a swinging door, so it suits dens and pantries better than bathrooms unless you add a privacy latch and accept some sound transfer.
How long does it take to replace the interior doors in a whole house?
A typical detached home's worth of doors — say eight to twelve — is usually one to two days for slab replacements and two to three for full prehung swaps, depending on how square the openings are and how much finishing is included. We hang and fit everything first, then handle latches, stops and final adjustments so every door closes with the same quiet click before we leave.
Do the new doors come painted, or is that extra?
Most interior doors arrive primed, not painted. We offer painting as part of the same project — doors, new casing, caulked joints and filled nail holes — so the job ends genuinely finished rather than white-primer temporary. If you'd rather paint them yourself, we install cleanly and leave surfaces ready. Either way, plan for paint on all six faces of a wood door; sealed edges are what keep doors from swelling every summer.
Do you install exterior doors?
No. This service covers interior door installation and door replacement inside the home — bedroom, bathroom, closet, pantry, barn and French doors. Exterior entry doors need weather sealing, insulated frames and security hardware from specialist installers. We can still repair, adjust and weatherstrip an existing exterior door.
Can you install a door I bought at a big-box store?
Yes. Most of our interior door replacement jobs use doors the customer bought. Measure the existing door (width, height and thickness) and note which side the hinges are on before you buy, or send us photos and we will confirm the size and swing first.

Ready to sort out your interior door installation?

Tell us what your home needs — a small fix or a full project — and get a free quote.

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