How much does a mezzanine cost per square foot in Ontario?

Most industrial mezzanines we ship in 2026 land between $50 – $120 CAD per square foot installed, depending on load class, deck choice, finish, and access stair scope. A 125-psf bar-grate storage mezzanine sits at the lower end; a 500-psf composite-deck heavy-load deck with multiple stair towers sits at the upper end.

What drives mezzanine cost?

Five things move the number: (1) live load class — 125 psf is significantly cheaper than 250 psf, and 500 psf is in another bracket entirely; (2) deck choice — bar-grate is cheapest, B-deck + concrete is mid, plate is most; (3) span — wider clear spans need deeper beams and more steel; (4) access — one stair vs. two stairs vs. a stair-plus-pallet-drop changes the number; (5) finish — shop primer is the floor, galv adds 10 – 25%, powder-coat over galv adds another 10 – 20%.

Is the access stair included in the mezzanine quote?

Yes — every mezzanine quote includes at least one access stair, sized to the platform's occupant load. Where the design needs a second exit (pallet drop, second stair, or floor-edge ladder), that's also in the quote, called out as a separate line item.

What's the total project lead time?

Typical: 4 – 8 weeks from sign-off, depending on size and finish. Engineering takes ~1 week from site measure; fabrication runs 3 – 5 weeks; install is 1 – 4 days for most projects. Galvanized finishes add 1 week to the fab side. Larger multi-tier projects can run 6 – 10 weeks.

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What mezzanine work actually costs in Ontario.

Honest typical ranges by configuration and load class — for buyers who want the order of magnitude before booking a site measure. Every fixed-price quote we send is project-specific and includes the stamped drawing; the table below is a working reference.

How to read this

Cost per square foot, all-in.

The ranges below are 2026 typical bands for Ontario projects, including engineering, fabrication, finish, decking, primary access stair, and install. They exclude unusual site conditions (overnight install, restricted-access work, hot-work permit fees, third-party inspections), and they exclude any concrete pour where required (we coordinate the pour but the concrete itself is usually a separate trade).

Cost ranges by load class & configuration

Configuration	Typical project	Range (CAD/sqft)
Storage mezzanine — light	125 psf, bar-grate, single stair	$50 – $70
Storage mezzanine — standard	175 – 250 psf, B-deck + concrete	$70 – $95
Storage mezzanine — heavy	300 – 500 psf, composite, dual stair	$95 – $135
Work platform / picking deck	125 psf + people, bar-grate, dual access	$70 – $100
Equipment-support platform	point-load engineered, vibration-isolated	$90 – $160+
Multi-tier (two-deck)	cumulative load, sprinkler-coverage deck	$85 – $130
Modular bolt-together	comparable spec, A325 connections	+10 – 20% over welded
Catwalk (per linear foot)	600 – 900 mm wide, bar-grate, 42" guard	$300 – $600 / lf
Conveyor support platform	point-load + service catwalk	$95 – $170+

Ranges shown are 2026 typical bands for Ontario projects, including engineering, fabrication, finish, decking, primary access, and install. Excludes concrete pour, third-party inspection fees, and overnight install premium. Project-specific quotes are always exact.

What drives the per-sqft number

Live load class — 125 → 250 psf is roughly +20%; 250 → 500 psf is another +30 – 40%. The biggest single variable.
Deck choice — bar-grate is the floor; B-deck + concrete adds ~$8 – $15/sqft; heavy plate adds more. Resin board is below bar-grate but only on light-load projects.
Span — wider clear spans (30 ft+) push beam depth and steel weight up; tighter column spacing keeps it down but eats floor space.
Access — one stair is standard. A second stair adds ~$8,000 – $20,000. A pallet drop is in between.
Finish — shop primer is included. Galvanized adds 10 – 25%. Powder-coat over galv adds another 10 – 20%. Two-coat industrial paint sits in between.
Site access — buildings with tight doorways or low overhead force smaller piece sizes and longer install. Open shells install fastest.

What's included

Stamped structural drawings produced by our Ontario P.Eng.
Site measure and slab-capacity verification
Material take-off and shop fabrication
Decking (bar-grate, B-deck, plate, or resin per spec)
At least one stamped access stair sized to occupant load
42" guards, kick-plates, and swing gates
Finish per spec (shop primer / galv / powder-coat)
Delivery and install by our own crew
Sign-off walk + as-built drawings + load plate at handoff

What's not included unless specified

Concrete pour (when B-deck + concrete is the deck choice — we coordinate, the pour is its own trade)
Sprinkler / fire-protection modifications
Electrical, lighting, or data conduit on the deck
HVAC adjustments below or above the deck
Permit fees (drawings are stamped; submission is the GC's scope unless agreed)
Demolition of existing equipment or structure
Hot-work permit / fire-watch on sites that require it
Third-party engineering review fees
Overnight or weekend install premium

What we won't quote without a site measure

We don't send a fixed-price mezzanine quote without a slab-capacity look at the existing floor — concrete thickness, reinforcement, and contraction joint locations all change the column-base detail. The same applies to any project where the building's existing column lines, overhead clearance, or egress routes could move the design. A 30-minute site walk is the difference between a quote that holds and an estimate that drifts at install.

Ready for a project-specific number?

Tell us the rough square footage, the load class, and the address. We'll book a site measure and send a fixed-price quote within 24 hours of the walk.

Request a quote

Mezzanines pillar
Load ratings guide — what the load class really means
Our process — site measure to handoff in 6 to 8 weeks
Stair cost guide — for stair-only project quotes