How much does a two-storey modular building cost?
A two-storey modular building costs £10,750 + VAT per module, the same as a single-storey one, so a two-module stack is £21,500 + VAT and a four-module two-storey block is £43,000 + VAT. Stacking adds the cost of a staircase and a stronger base, but halves the ground area the building occupies.
Stacking is the right answer when the footprint is the constraint rather than the budget — tight yards, small playing fields, warehouse floors you do not want to give up. Modules stack to two storeys as part of an appropriately designed configuration.
Price by size
Every module is £10,750 + VAT. Prices below are for the building only.
| Modules | Usable floor area | Price (ex. VAT) | What it realistically fits |
|---|---|---|---|
| 2 modules | approx. 24.4 m² usable | £21,500 + VAT | One room over one room — office above store, or two offices |
| 4 modules | approx. 48.7 m² usable | £43,000 + VAT | Two rooms per floor: offices with a WC below and meeting space above |
| 6 modules | approx. 73.1 m² usable | £64,500 + VAT | Larger two-storey block with WCs, kitchen and separate meeting rooms |
| 8 modules | approx. 97.4 m² usable | £86,000 + VAT | Substantial two-storey building on half the ground area of a single-storey equivalent |
Typical specification
- •Internal staircase, or an external stair where floor area is at a premium
- •Upper-floor WCs where drainage allows
- •Balustrading and landing arrangement set at design stage
- •Windows positioned per floor for daylight and escape requirements
What your site needs
- •A base engineered for the stacked load — heavier than a single-storey base
- •Crane access, since upper modules are lifted into place
- •Building control sign-off for the stair, escape and fire strategy
- •Planning permission, which is more likely to be required at two storeys
Costs on top of the building
We publish the module price openly, so here is the honest rest of the budget. These vary by site and are quoted for your project rather than averaged.
- •VAT at the prevailing rate
- •A level, load-bearing base or foundation sized to the building
- •Transport to site, quoted on distance and access
- •Offloading, and crane or hiab attendance where access requires it
- •Final connection to mains power, water and drainage by your own contractor
- •Planning permission or building control fees where these apply
P600 key facts
- Product
- P600 modular building
- External module dimensions
- 5900mm × 2200mm (5.9m × 2.2m)
- External module footprint
- approx. 12.98 m²
- Internal usable dimensions
- 5800mm × 2100mm (5.8m × 2.1m), approximate
- Internal usable floor area
- approx. 12.18 m²
- Price per module
- £10,750 + VAT (£12,900 inc. VAT)
- Configuration
- Single module or multiple connected modules
- Storeys
- Up to two storeys, subject to final project design
- Delivery
- UK mainland and Northern Ireland — transport quoted separately
The Adacon P600 modular building measures 5.9m × 2.2m (5900mm × 2200mm) externally, with an approximate usable internal size of 5.8m × 2.1m and an internal floor area of approx. 12.18 m² per module, and costs £10,750 + VAT per module. Each module can include a kitchen, toilet, shower, internal partitions, windows, doors, lighting, sockets and a consumer unit, and modules can be joined side by side or stacked to two storeys.
Common questions
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