I need two extra classrooms without major building works. What are my options?
A modular solution can be sized with a tailored mix of P300, P400, P500, P600 and P700 units, then fitted around the intended use. The online designer shows the final calculated total for the exact configuration before a formal quotation.
Most schools come to us mid-year: the roll has grown, the hall is being used as a teaching space, and a traditional extension cannot realistically start before the next academic year. The decision is usually made on disruption and certainty of date rather than on price alone.
Your options compared
Modular classrooms on a prepared base
Modules are manufactured while your base is prepared, then delivered finished and joined on site.
- Installation is normally one day, so it fits a holiday or a weekend
- A detailed designed specification, so the budget can be confirmed before you commit
- Can be relocated or extended later by adding modules
- You need a level base and delivery access for a lorry and crane
- May need planning permission or a temporary-use application
Remodelling existing internal space
Subdividing a hall, library or large room to create teaching space.
- No external works
- Usually no planning application
- You lose the space you already use
- Daylight, ventilation and acoustics are often compromised
- Contractors work inside an occupied building
Traditional extension
A permanent masonry build tied into the existing school.
- Permanent addition to the estate
- Fully matched to the existing building
- Months of on-site construction inside a live school
- Cost certainty only after design and tender
- Weather-dependent programme
If the space is needed this academic year, modular is the only option that gives a fixed date and a clear building specification and quotation up front. Start with the base and the access route — those decide the programme, not the building.
What each size gives you
Mix P300, P400, P500, P600 and P700 units around the space needed; the designer calculates the final total for the exact result.
| Modules | What it gives you |
|---|---|
| 4 modules | Two small teaching or intervention rooms, or one 30-pupil classroom |
| 6 modules | Two classrooms with a shared lobby and a WC |
| 8 modules | Two full classrooms with cloaks, store and accessible WC |
How to get it moving
- Confirm where the building will sit and how a lorry reaches it
- Get the base priced — usually the longest-lead item
- Design the layout in the builder and get a written quote
- Check with the local authority whether planning is required
- Book installation for a holiday or weekend
Costs on top of the building
- •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
P300–P700 range, or bespoke
- P300 unit
- 2.9m × 2.2m externally; approximately 2.7m × 2.0m usable internally (5.4 m² usable internal area per separate unit)
- P400 unit
- 3.9m × 2.2m externally; approximately 3.7m × 2.0m usable internally (7.4 m² usable internal area per separate unit)
- P500 unit
- 4.9m × 2.2m externally; approximately 4.7m × 2.0m usable internally (9.4 m² usable internal area per separate unit)
- P600 unit
- 5.9m × 2.2m externally; approximately 5.7m × 2.0m usable internally (11.4 m² usable internal area per separate unit)
- P700 unit
- 6.9m × 2.2m externally; approximately 6.7m × 2.0m usable internally (13.4 m² usable internal area per separate unit)
- Configuration
- Mix P300, P400, P500, P600 and P700 units to create tailored footprints and shapes
- Bespoke
- Bespoke sizes considered to suit your brief — contact us
- Joined internal space
- Open joins remove the adjoining shell walls and can increase usable space. Final clear area depends on layout and partitions.
- Unit height
- 2.40m external / 2.16m internal
- Storeys
- Up to two storeys, subject to final project design
- Delivery
- UK mainland and Northern Ireland — transport quoted separately
Adacon modular buildings use P300, P400, P500, P600 and P700 units with external lengths of 2.9m, 3.9m, 4.9m, 5.9m and 6.9m, a common 2.2m width and 2.40m external / 2.16m internal height. The sizes can be combined to create more tailored floor areas and building shapes, joined side by side or stacked to two storeys subject to the final project design.
Common questions
Talk it through with us
Tell us the situation and we'll tell you honestly what it takes.
Get a price for Two Extra Classrooms Without Building Works — Your Options
Tell us what you need and we'll come back with pricing and lead times — usually within one working day.