Commercial mezzanine floors
Beyond warehouses and factories, mezzanines add floor space to gyms, car and furniture showrooms, trade counters, studios, schools and churches in tall buildings. Most of these floors are open to customers or members, so they are built like a public floor: fire protection, general access stairs, good balustrades and step-free access where needed. The structure for 100 m² typically costs £17,700 to £42,500, before finishes.
A free matching service, not a mezzanine floor installer. We find one who covers your area and tell you who they are before anything is shared. How it works
Where commercial mezzanines are used
- Gyms adding a studio, spin room or free weights area over the main floor.
- Showrooms and trade counters putting stock or displays on a second level.
- Studios and creative spaces in former industrial units.
- Leisure venues adding seating, a café or viewing area.
- Landlords adding lettable space to a tall, empty unit.
- Any tall building where the lease runs long enough to pay back the cost.
What a commercial mezzanine costs
| Job | Typical price |
|---|---|
| 50 m² public floor Fire protection, one stair, lighting, before finishes | £13,600 to £30,700 |
| 100 m² public floor Fire protection, one stair, lighting, before finishes | £17,700 to £42,500 |
| 200 m² public floor Fire protection, one stair, lighting, before finishes | £24,700 to £64,900 |
| Published fully installed rate Retail and office floors, The Mezzanine Company | £450 to £600 per m² |
| Handrail and edge protection Steel to glazed, per linear metre | £60 to £350 per metre |
Ranges built from published figures: The Mezzanine Company (July 2026), Western Industrial (October 2026), Checkatrade (September 2026) and MyBuilder (October 2026), read 26 October 2026. Each includes one staircase, handrail on two open sides and building control. Figures exclude VAT at 20%, which most VAT-registered businesses can reclaim. A guide, not a quote. Handrail range from MyBuilder. Gym floors may need a higher load and anti-vibration finishes, priced after survey. The cost calculator works out a range for your floor.
What a good quote includes
Ask for these six points in writing. Two quotes that cover them can be compared line by line.
Design load, in writing
The uniformly distributed load in kN/m² and the point load the deck is designed for. Gyms with free weights and crowds need more than an office rating; ask what the installer has allowed for impact and vibration.
Plan, grid and heights
A drawing with the deck size, column positions, the finished floor level and the clear height left under and over the deck.
Deck and finish
Board type and thickness (for example P5 chipboard, plywood, steel or concrete), plus any anti-slip or painted finish.
Fire protection
The fire-rated ceiling and casings, detection and emergency lighting, and how members of the public will escape.
Stairs, handrail and gates
How many staircases, their width, the handrail and edge protection, toe boards and any pallet gates, each priced as a line.
Building control and handover
Who applies for building regulations approval, whether the fee is included, and what you receive at the end: calculations, drawings, completion certificate and a loading notice.
Planning a mezzanine for a gym, showroom or other business? Tell us about it and we will find an installer.
Ask for a free quoteHow a commercial mezzanine usually runs
Survey
The installer measures the building, checks the slab, columns, lights, sprinklers and doors, and asks what the floor will carry and how goods and people will reach it.
Design and quote
A layout drawing with the load rating, column grid, stairs and fire protection, then a written price. Expect to compare two or three designs, not just prices.
Building regulations
Drawings and structural calculations go to building control, from the council or a registered building control approver, before work starts.
Install
Columns, beams and deck go up first, then stairs, handrail, gates and any fire-rated ceiling and column casings. Most floors take days to a few weeks on site.
Sign-off
Building control inspects and issues a completion certificate. You should also receive the drawings, calculations and a loading notice to display on the floor.
Questions people ask
Can a gym have a mezzanine floor?
Yes, many do, but tell the installer exactly what will go on it. Free weights, dropped bars and group classes create impact and vibration that a storage design does not allow for, so the load rating and deck finish need thought.
What staircase does a public mezzanine need?
A general access stair. Approved Document K limits the rise to 150 to 170 mm and the going to 250 to 400 mm, with handrails 900 to 1000 mm above the pitch line and 1100 mm guarding at floor edges.
Does a commercial mezzanine need planning permission?
Usually not, as internal works are not normally development, but check if the use of the building changes, if it is listed, or (in England) if a shop gains more than 200 m². See our guide to mezzanine planning permission.
Does a mezzanine need fire protection?
It depends on use and size. Approved Document B lets small storage-only floors used by few people go without fire-rated construction. Industry guidance such as Western Industrial's fire protection guide reads the limits as storage only, under 20 metres in every direction and no more than half the floor area below; once a floor is bigger, used as offices or production, or open to the public, a fire-rated ceiling and column casings are normally needed. Building control has the final say.
Do I need building regulations approval for a mezzanine?
Yes, in almost every case. A mezzanine adds structure and changes how people escape in a fire, so it is building work under the Building Regulations. The installer usually prepares the drawings and calculations and makes the application to the council or a registered building control approver.
Get free commercial mezzanine quotes
Three short steps: where the building is, what the floor is for, and how to reach you. It takes about two minutes, and rough answers are fine.
This is a free matching service, not a mezzanine floor installer. We find one who covers your area and name them to you first. Nobody contacts you until you say yes.
Thanks, your enquiry is in.
- Within one working day we will email or call to tell you which mezzanine floor installer covers your area.
- Your details reach that firm only if you say yes.
- They look at the site and give you a fixed price. No marketing from us, ever.