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Guide · Permits & structure · 10 min read

Load-Bearing Wall Removal and Structural Engineering for Basements

We take out bearing walls in basements. An external licensed engineer designs and stamps the beam, the posts and the footings; we get the permit and build it. Below: one we did, what it costs, and what the city asks for.

  • By Diego Botia, Architectural Designer, B.Arch

One of many structural projects we’ve done

The wall down the middle of the house, and the room it became

A 1,000 sq ft Toronto basement, finished in 2018. A masonry bearing wall ran the length of the house, straight down the middle of the floor, with the water meter beside it. The owner had been told the wall had to stay. It did not: it came out, and the basement is now one room, corner to corner.

Built
Open-concept basement, three-piece bathroom, playroom, new stair
Size
1,000 sq ft
Investment
$137,000 before HST
Structural work
Masonry bearing wall removed; new footings, steel posts and a steel beam across
Completed
2018
On site
Eight weeks
Where
Toronto, Ontario

What the eight weeks covered

Temporary shoring walls carrying the floor above while the load-bearing block wall is taken out of a Toronto basement
The masonry bearing wall demolished down the middle of the basement, the floor above held on shoring

Temporary shoring carries the floor above while the bearing wall comes out. This is the part of the job nobody photographs, and the part that decides whether the rest of it is safe.

The engineered drawing for the wall removal: the basement floor plan with the load-bearing block wall marked to come out, the new steel beam, the HSS posts and the footing details
The drawing the work was built from — the wall marked to come out, the W200×46 beam that replaces it, the HSS posts, and the footings under them, with the connection details. Designed and stamped by a licensed professional engineer; the title block and the seal are left off here because the sheet carries the client’s address.
The finished Toronto basement after the load-bearing wall came out: one open room with no posts in the middle
The full span of the finished basement, from the stair to the far end, with the bearing wall gone

The same basement finished: no posts in the middle of the room, and no wall where the wall was.

What the structural side of a basement involves, and who does which part

An engineer reviewing a 3D building model on a tablet
  • The engineer. An external licensed professional engineer looks at the house, sizes the beam, the posts and the footings, and stamps the drawing. On a structural job, the city asks for that stamp.
  • The drawing and the permit: us. We draw the basement around the structure and file the application. The permit service is included; the municipality’s own permit fee is paid by the homeowner.
  • The build: us. Temporary shoring, the wall out, the footings poured and inspected, the posts and the beam set, the services that were inside the wall moved, and the room made good.

Underpinning, foundation repairs and floor levelling

Underpinning. When the basement needs more headroom, the floor goes down and the footings go down with it, to the engineer’s design, inspected before the new slab is poured.

Foundation repairs. Cracked or leaking foundation walls are repaired from the structure out, and waterproofing is part of that repair, not a separate trade we send you to.

Floor levelling. Most existing basement slabs are out of level, some far worse than others. We level the floor in most of the basements we finish, before any flooring goes down.

If you need a beam, a bearing wall opened or underpinning in your basement, we draw it and arrange the engineer’s stamp. Book a design session, and we will look at the house before anyone quotes.

The Harmony Basements team at the HomeStars Best of Awards

What it costs

Opening a load-bearing wall: what we charge, and what the job is made of

Our own starting prices are below, and under them, what the work is actually made of. Every outside figure on this page says where it came from and when we read it, because most of what is published about this job in Toronto is a contractor’s own marketing with no source behind it.

OpeningHarmony, fromWhat that buys
A 12–15 ft opening$12,500 Engineering, temporary shoring, the beam, the posts, the footings under them, and the wall made good
A 25–30 ft span$22,500 The same, with the longer beam and the heavier posts and footings that span needs

Starting prices, not quotes. What moves them is on this page: the storeys above the wall, whether the beam is dropped or flush, what is inside the wall, and what is under the floor where the new posts land. We price it line by line after the measure, on the drawing, before anyone signs anything.

What the money is made of

LinePublished GTA rangeWhere that range comes from
Structural design by an engineer$900–$2,500 Red Stone Contracting, Toronto, cost guide labelled 2026
Temporary shoring$800–$2,500 Red Stone Contracting, Toronto, 2026
The beam, supplied and installed — LVL$1,800–$5,000 Red Stone Contracting, Toronto, 2026
The beam, supplied and installed — structural steel$3,500–$9,000 Red Stone Contracting, Toronto, 2026
Steel beam by section and spanW8 over 12–14 ft $2,500–$4,000; W10 over 14–18 ft $4,000–$7,000; W12 over 18–24 ft $7,000–$12,000 Crown Structural Corp., Toronto, page states 2026
New footings under the posts$1,500–$4,500 Red Stone Contracting, Toronto, 2026
Moving the services that were inside the wall$600–$3,000 Red Stone Contracting, Toronto, 2026
Making good: drywall, ceiling, paint, flooring$1,500–$5,000 Red Stone Contracting, Toronto, 2026
Hiding the beam in the ceiling instead of dropping itadds $3,000–$6,000 Red Stone Contracting, Toronto, 2026

Those are other people’s published numbers, read on 20 September 2026, and they are self-published marketing rather than survey data — we give them because they are the only Toronto figures in the open, and because they show the same thing our own jobs show: the beam is about half of it. The other half is the shoring, the footings, the services and the making good.

Price a basement line by line, structure included

In a basement specifically

Five things that decide the price down here — and are not in the kitchen articles

Almost everything written about removing a bearing wall is written about a main-floor kitchen. A basement is a different job, for five reasons.

  1. Headroom, before anything else. A dropped beam hangs below the joists and takes eight to ten inches with it. In a basement with 7 ft 6 in. to the joists, that is the difference between a room and a crawl. A flush beam — sitting up inside the floor, hangers carrying the joists — keeps the ceiling flat and costs more: the GTA premium published for it is $3,000–$6,000 (Red Stone Contracting, 2026). Decide this before the drawing, not after.
  2. What the wall is standing on. A wall on the main floor stands on the floor structure. A wall in the basement often stands straight on the slab with no footing under it at all. The new posts cannot: each one needs a footing, which means breaking the slab, digging, pouring, and waiting on an inspection before it is covered.
  3. What is inside the wall. An HVAC trunk, a stack, the panel feed. Moving a duct out of a wall that is about to disappear is often the longest single item in the schedule — on our 2018 job it was the water meter, sitting in the middle of the floor where the room needed to be.
  4. How many storeys are standing on it. A wall carrying one floor above is a different beam from a wall carrying two floors and a roof. It is the first question the engineer asks, and the number that sets the steel.
  5. Whether it is a bearing wall at all. Not every wall down the middle is. It is decided by what is above it — joist direction, what sits on it upstairs — not by how solid it looks. We open the ceiling and check before anyone quotes.

The paperwork

The permit, in plain steps — with the cities’ own numbers

Everything here is from the municipalities’ own pages, read on 20 September 2026, with the by-law and the date each one gives. We handle the application; you should still know what it says.

  1. Yes, it needs a permit. Toronto exempts finishing a basement from a permit only where the work involves no structural or material alteration — so the exemption goes the moment a bearing wall or a beam is in the job (City of Toronto, building permit pages, modified 21 July 2026). Vaughan puts it plainly: a permit is required for all structural alterations within residential buildings. Markham lists “adding, removing or altering a structural wall or column” among the work that needs one.
  2. The drawings have to show the existing structure as well as the new. Vaughan asks for a fully dimensioned, signed and dated set that includes the existing structural information and the proposed changes, with the designer’s name, registration number and BCIN on it. Markham asks for a floor framing plan with posts, beams, joists and lintels. Where the drawings carry an engineer’s seal, Toronto also wants an Assumption of Responsibility form.
  3. An engineer stamps the structure. The beam, the posts and the footings on our projects are designed and reviewed by an external licensed professional engineer. Vaughan publishes a General Review Commitment form and an Owner’s Letter of Undertaking for exactly this, and its inspectors may ask for the engineer’s reports on site at an inspection.
  4. The fee is charged by area, and it is small. Toronto: $11.53 per m² for Group C interior alterations, minimum $214.79 per permit, effective 1 January 2026. Vaughan: $7.30 per m², minimum $195.00 (By-law 051-2026). Markham: $8.43 per m², minimum $151 for Group C residential (By-law 2025-121). The permit is never the reason a structural job is expensive.
  5. Ten business days. A complete house application is a ten-business-day review in Toronto, Vaughan and Markham alike — and ten days is the statutory window Ontario sets for a house. Incomplete applications are what take months; Markham doubles its own target to twenty days for one.
  6. Then the inspections. Footings, then framing, then the rest, in sequence, each one booked before the work is covered. Toronto runs ten inspection stages on a Part 9 house and takes bookings from the next business day. The electrical work is not part of that: in Ontario it is the Electrical Safety Authority’s permit and the ESA’s inspection, and it is separate.
  7. What it costs to skip it. Toronto adds a work-without-permit fee of 50% of the permit fee and stops the work while the application catches up. Under the Building Code Act the fines reach $50,000 for an individual on a first offence. And the question comes back at the worst moment — when the house is sold, or when an insurer asks who engineered the beam.

Sources, read 20 September 2026: City of Toronto building permit and fee pages; City of Vaughan building permit pages and Schedule F of By-law 051-2026; City of Markham building permit pages and the fee schedule under By-law 2025-121; Ontario’s Citizen’s Guide to Land Use Planning, building permits.

Asked and answered

Questions homeowners ask us about structural work

How do I know if the wall is load-bearing?

By what is above it, not by what it looks like. Joists running across it, a wall stacked over it upstairs, a beam pocket in the foundation: those are the tells. We open a small piece of ceiling and look before we quote, because guessing this one is how people end up with a crack across the drywall a year later.

Dropped beam or flush beam?

A dropped beam is cheaper and eats eight to ten inches of ceiling. A flush beam sits inside the floor and keeps the ceiling flat, and the published GTA premium for it is $3,000–$6,000. In a basement the ceiling is the scarcest thing you have, so we price both on the drawing and let you choose with the numbers in front of you.

Steel or LVL?

Span decides it more than preference. Engineered lumber does the shorter openings; past roughly five metres, or where the beam has to be shallow to save headroom, it is steel. The engineer sizes it; we build what the stamped drawing says.

Do I need an engineer, or will a designer do?

For a house under Part 9 of the Building Code, some framing can be sized from the Code’s own span tables by a qualified designer with a BCIN. Once the opening, the loads or the details fall outside those tables, the structure has to be designed by a professional engineer. On our structural jobs an external licensed P.Eng does the design and the review, so the question does not come up at the counter.

How long does the structural part take?

The steel itself is days. The project is not: drawings, the ten-business-day permit review, the footing inspection before anything is covered, and then the room you are actually paying for. Our 2018 Toronto basement — wall out, services moved, everything rebuilt — was eight weeks on site.

Can you open a wall that stands on the basement slab?

Yes, and it is the common case down here. The new posts need real footings, so the slab is broken out, the footings are poured to the engineer’s design, and they are inspected before they are covered again.

What happens to the ducts, the stack and the water meter in the way?

They move first. On the Toronto job the water meter sat in the middle of the floor and the ducts ran where the room had to be; relocating them was the front half of the schedule. It is also the part most quotes leave out.

Is the work insured?

Yes — $5M liability, and the structural design is stamped and reviewed by a licensed professional engineer. The warranty on our workmanship is for life.

Prices on this page that are ours are starting prices for the structural work itself, before HST. Everything else is sourced above.

Book a design session

Ninety minutes with the person who will draw your basement

At your home or at our Vaughan design centre. No obligation, and no commissioned sales rep. The person who designs your basement also prices it and prepares the permit drawings, so nothing gets lost between people.

Book a design session Call 905-669-9039
  1. 01

    We call you

    At a time that suits you, to set the session and hear what you have in mind.

  2. 02

    We measure and listen

    We measure the basement and see what the house will allow; you tell us how you want to use it. Then we draw every layout it can have, and you pick one.

  3. 03

    You have the price before we leave

    Before the visit ends, you have a line-by-line price for the layout you picked, written against a detailed drawing, electrical and HVAC included. The 3D model and the 360° VR walkthrough let you see it before you sign. Within 24 hours of your go-ahead, that same drawing becomes part of the permit package we prepare and submit.

Vaughan design centre

156 Chrislea Road, Unit 4
Woodbridge, Ontario
(City of Vaughan)

Telephone & WhatsApp

905-669-9039
WhatsApp, 24/7

Toronto and the GTA

Design sessions at your home or at our design centre, whichever suits you.

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