Canning Vale · Perth metro · the South West
You’re not buying floor.
You’re buying the air above your racking.
Industrial mezzanine floors, AS 1657 stairs, pallet gates and handrail for warehouses and workshops across the Perth metro — engineered, certified and installed.
Decks up since 2009. Registered building contractor BC00000 (placeholder) · every deck engineer-certified to AS/NZS 1170.1 · $20m public liability.
72 m² at 6 m spans — $40,655
3,500 mm under, 3,108 mm over, on a 392 mm floor
A mezzanine is two clearances and a beam between them.
Everything a shed owner argues about is vertical. That is your building drawn in section on a fixed 0–9,500 mm axis, one scale in both directions — the slab, the underside of your roof structure, and the deck slotted between them with its beam drawn as a real depth rather than a line. Set the building and the deck; the drawing answers in millimetres — whole millimetres, because two very different buildings both round to “2.1 m” and only one of them fits.
Your building — clear height
Slab to the underside of the roof structure — not to the ridge, and not to the gutter. If you have never measured it, we do that on the site visit.
What goes underneath
What goes underneath doesn’t change the price of the deck. It changes whether there’s a deck at all.
Span between columns
A wider span means fewer columns in your way and a deeper beam overhead. The beam is inside the rate, so the span moves the drawing, not the price.
Design load
The load we design to is AS/NZS 1170.1’s, and the number that binds is your certifying engineer’s. We do the shop drawings and they sign the design.
Deck surface
Particleboard for offices, structural ply where it gets wet or wheeled on, open grate where you want light and sprinkler flow through the floor.
Deck size and gate
Length
Width
The honest answer
What that price is made of
The load we design to is AS/NZS 1170.1’s, and the number that binds is your certifying engineer’s. We do the shop drawings and they sign the design. Nothing this page computes is certified or compliant — it is a scoping estimate to a site measure.
Read the drawing as text
What we build
Six things, and we do all six ourselves — steel, deck, stair, rail, gate and the paperwork. Floors are the honest starting prices for a complete installed job in a standard Perth tilt-up or portal-frame shed.
Mezzanine floors
Column-and-beam decks from 24 m² up. Columns on pad footings or bolted to the existing slab where the slab will take it, beams to your span, deck to your surface. Installed in one to three days once the steel lands.
from $18,000
AS 1657 stairs
A straight flight or a half-landing return, pitched between 20° and 45° as AS 1657-2018 requires, with handrail both sides and a checker-plate or grate tread. One flight per deck is in the price above.
from $4,850 a flight
Pallet gates
A pivot or up-and-over gate so a pallet can go up on the forks without anyone standing at an open edge. If a forklift will ever load your deck, this is not an accessory.
from $3,450
Handrail and kickplate
Guardrail to AS 1657-2018 with the top rail between 900 and 1,100 mm above the deck, a mid rail, and a 100 mm kickplate so nothing rolls off the edge onto the person below.
from $185 a metre
Engineering and certification
Shop drawings, structural design to AS/NZS 1170.1 and AS 4100, and an independent structural engineer’s certificate for your building permit. Every deck we install gets this — it is not optional and it is not an upsell.
from $2,850
Extensions and relocations
Taking a deck to a new lease, or adding a bay to one already up. A relocated deck is re-measured and re-engineered for the new building before it goes back up — a certificate follows the building, not the steel.
from $2,850 to re-certify, then the deck at the rates above
Who you’re dealing with
What people said afterwards
“We had 6,750 mm to the underside and a reach truck in the aisles. Overdeck said the office deck missed by 82 mm before anyone drove out, and showed me where on a drawing. We took general storage on a 7 m span instead — 2,108 mm over the deck — and it’s been up two years.”Dean R.Distribution warehouse, Canning Vale
“Parts store below, office above, 8 × 5. The stair and the pallet gate went in the same week as the deck and the engineer’s certificate turned up before the surveyor asked for it. That’s the part nobody else got right.”Marika T.Truck workshop, Malaga
“They quoted a 12 × 6 grate deck so the sprinklers still reach the floor under it. I’d have bought particleboard and had a fight with the certifier. Install crew were in and out in two days and swept up.”Sam O.Importer, Bibra Lake
Where we work
Canning Vale out, and we go where the sheds are. Inside the inner ring we can usually measure the same week; the rest of the metro inside a fortnight; Bunbury and Picton get a run every month.
- Canning Vale
- Welshpool
- Kewdale
- Malaga
- Bibra Lake
- Jandakot
- Osborne Park
- Wangara
- Bayswater
- Midland
- Forrestdale
- Henderson
- Rockingham
- Joondalup
- Neerabup
- Bunbury and Picton, monthly
Six questions we get every week
Do I need council approval for a mezzanine?
Almost always, yes. A mezzanine is a floor, so in Western Australia it needs a building permit under the Building Act 2011, applied for through your local government, with a certificate of design compliance from an independent building surveyor. Your landlord will want to see it too, and so will your insurer if anything ever happens. We produce the engineering, the shop drawings and the structural certificate; your surveyor does the rest.
What load should I design to?
Three brackets cover nearly every shed: 3.0 kPa for an office or light storage, 5.0 kPa for general storage, 7.5 kPa for pallets. The load we design to is AS/NZS 1170.1’s, and the number that binds is your certifying engineer’s. We do the shop drawings and they sign the design. If you tell us pallets go up there, we design for pallets — a deck rated for an office with a pallet on it is the failure everybody reads about.
How long does it take?
Site measure inside a week. Engineering and shop drawings take about two weeks, permit turnaround is your local government’s (typically two to four weeks in the metro), and steel is four to six weeks from order. Install is one to three days depending on size, and we can work around your operating hours. Call it eight to ten weeks door to door, and most of that is waiting on paper and steel, not on us.
Can I take it with me when the lease ends?
Yes — that’s the argument for a bolted deck over a slab pour. It comes apart in a day, and the make-good is patching the footings. What doesn’t travel is the certificate: a new building means a new slab, a new roof structure and new engineering, so the deck is re-measured and re-certified before it goes back up. That re-certification is the $2,850 line, and it is not optional.
Will I need a second way down?
Possibly. The NCC treats a mezzanine as a floor, which brings egress with it — above a certain floor area or travel distance you need a second exit, and your building surveyor sets exactly where that line falls for your building, your class and your occupancy. We draw the stair and the deck; your surveyor decides how many stairs the drawing needs. We’d rather raise it in the first phone call than after the steel is cut.
How much room does a forklift really need under there?
More than people expect, because you measure to the underside of the beam, not to the deck. A counterbalance forklift with a lowered mast wants about 3,500 mm; a reach truck in racking wants about 4,200 mm; walking and shelving is happy on 2,400 mm. Add the beam and the deck sheet on top of that and you can lose 650 mm of building before you have gained a square metre. That is what the section above is for.
Book a site measure
Thanks — we’d call you back within one business day.
On a real build this lands in the quoting system and a measure gets booked. This is a demonstration page, so nothing was sent anywhere and no number was stored.
What we’ll ask when we call
- Clear height to the underside of the roof structure, and whether there are pipes or ducts under it.
- What’s underneath now, and what you want driving through it later.
- Slab thickness if you know it — it decides pad footings or bolt-down.
- Whether you own the building or lease it, and how long is left on the lease.
- Sprinklers, lighting and where the switchboard is.
Straight answers only. If a mezzanine is the wrong call for your shed, we say so on the phone. Racking is cheaper than a deck you can’t stand up on.
This is a demonstration build by Sapience Analytics. Want one pointed at your customers?
Overdeck isn’t a real business — the page is. Every figure on it is computed live from a model written down before a line of code, including the state most mezzanine sites would never build: the buildings where the honest answer is that nothing fits. That’s exactly how we’d build yours.