Covering Llanelli
Our coverage around Llanelli (SA15) also includes Pontarddulais, Swansea and Ammanford.
Homes in Dyfed
Welsh homes include long terraces built into hillsides, stone cottages and modern estates, and sloping sites often shape how and where an extension can go.
What goes into an upward extension?
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.
- Planning and building regulations checks under Welsh rules
- Structural survey of walls and foundations
- New first-floor structure, walls and roof
What is the guide price for an upward extension in Llanelli?
Guide prices for bungalow and upward extensions, including VAT where it applies. Your fixed price is confirmed in writing after the survey.
| 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 Llanelli?
Welsh projects need planning clearance from the council under Welsh rules, building regulations approval under the Welsh approved documents, and party wall notices where the work affects a neighbour’s wall or foundations.
Adding a storey in Wales needs planning permission. We prepare the application with drawings showing how the new roofline fits the street.
What should Llanelli homeowners check first?
- The staircase takes space from the ground floor plan.
- Neighbours’ light and privacy are the main planning tests.
How does the project run?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
- 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.
Your questions answered
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.
How much does it cost to add a storey?
Around £2,200 to £3,800 per square metre of new floor including VAT, or £45,000 to £85,000 for a chalet conversion with dormers.
Do you work in Llanelli?
Yes. Llanelli is within our coverage for bungalow and upward extensions, along with nearby Pontarddulais and Swansea.
Bungalow and upward extensions near Llanelli
- Bungalow and upward extensions in Pontarddulais
- Bungalow and upward extensions in Swansea
- Bungalow and upward extensions in Ammanford
- Bungalow and upward extensions in Carmarthen
Learn more about bungalow and upward extensions, or see every project we cover in Llanelli.

