Covering Warminster
Warminster sits 30 miles south-west of Swindon, with Frome 6 miles to the west and Trowbridge 8 miles to the north.
Homes in the South West
In the South West, matching local stone, render or slate is often the main design question, and conservation areas and listed buildings are common in historic towns.
What is included in an upward extension in Warminster?
An upward extension adds a new storey on top of an existing house, most often turning a bungalow into a two-storey or chalet-style home. It can double the floor area without using any of the garden.
- Design and planning or prior approval application
- Roof removal and temporary weather protection
- Full fit-out of the new rooms
What is the guide price for an upward extension in Warminster?
Indicative costs for bungalow and upward extensions. London and the South East usually sit towards the top of each range.
| Bungalow and upward extensions | Guide price incl. VAT |
|---|---|
| Chalet conversion with dormers (total) | £45,000 to £85,000 |
| New first floor, standard specification | £2,200 to £2,800 per m² |
| New first floor, good specification | £2,800 to £3,300 per m² |
| New first floor, high specification | £3,300 to £3,800 per m² |
Do you need permission for an upward extension in Warminster?
In England we deal with the council’s planning team for permission or a lawful development certificate, with building control (the council or a registered building control approver) for inspections, and with neighbours under the Party Wall etc. Act 1996 where it applies.
In England, Class AA permitted development allows an extra storey on many detached and semi-detached houses built between July 1948 and October 2018, subject to a prior approval application covering design, neighbours’ amenity and other matters. Houses in conservation areas and other protected land need full planning permission, as do most chalet conversions with front dormers.
What should I think about before starting?
- Some bungalow foundations need strengthening before a storey can be added.
- The staircase takes space from the ground floor plan.
From first call to completion
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
- Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.
Questions about an upward extension in Warminster
Can I add a first floor to my bungalow?
Often yes, if the walls and foundations can carry the load and planning allows. We check the structure first.
Do we need to move out?
Often for part of the job, while the roof is off and the new floor is formed. We plan this with you.
Can you visit a house in Warminster to quote?
Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.
Also covering
- Bungalow and upward extensions in Frome
- Bungalow and upward extensions in Trowbridge
- Bungalow and upward extensions in Devizes
- Bungalow and upward extensions in Bath
Learn more about bungalow and upward extensions, or see every project we cover in Warminster.

