Building services in Carmarthen
House extensions
- Single-storey extensions
- Double-storey extensions
- Side extensions
- Side return extensions
- Wraparound extensions
- Kitchen extensions
- Orangeries
- Glazed and contemporary extensions
- Porches
Loft conversions
- Dormer loft conversions
- Hip-to-gable loft conversions
- Mansard loft conversions
- Rooflight loft conversions
- Bungalow loft conversions
Garage, basement and barn conversions
New build homes
Renovations and structural work
Design and approvals
Guide prices in Carmarthen
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £1,800–£2,650 per m² of floor area |
| Double-storey extensions | £1,500–£2,300 per m² of floor area (both floors) |
| Hip-to-gable loft conversions | £50,500–£72,000 for a hip-to-gable with rear dormer |
| Garage conversions | £16,500–£27,500 for a single integral garage |
| House renovations | £850–£1,650 per m² for a medium to full renovation |
| Structural alterations and knock-throughs | £4,250–£8,750 for a typical knock-through with steel beam |
Building costs in Wales run about 8% below the UK average, and the figures for Carmarthen are adjusted to reflect that.
Planning permission in Carmarthen
In Wales a single-storey rear extension is often permitted development: up to 4 metres beyond the rear wall and up to 4 metres high, with eaves no higher than 3 metres within 2 metres of a boundary and no more than half the land around the original house covered. Wales has no larger home extension prior approval route, so deeper extensions need a planning application, as do extensions to flats, listed buildings and houses whose rights have been removed.
Building regulations in Wales are set by the Welsh Government. Approval comes from the council’s building control service or a registered building control approver, with inspections during the work and a completion certificate at the end.
About building in Carmarthen
Terraced houses in Welsh towns often have narrow plots, which suits rear and side return extensions and rear dormers.
We work across Carmarthen and neighbouring areas such as Llanelli, Ammanford and Gorseinon. Postcodes we cover in Carmarthen include SA31. Carmarthen has a population of around 16,000.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Design and pricing
Design options, then a fixed quote based on the chosen drawings and specification.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions from homeowners in Carmarthen
How much does an extension cost in Carmarthen?
A single-storey extension in Carmarthen typically costs £1,800–£2,650 per m² of floor area, and a double-storey extension £1,500–£2,300 per m² of floor area (both floors), including VAT.
How much does a loft conversion cost in Carmarthen?
A rear dormer loft conversion in Carmarthen typically costs £44,000–£62,500 for a typical rear dormer with en-suite, including VAT.
Do you work in Carmarthen?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Carmarthen, including postcodes SA31.
Do I need planning permission for an extension in Carmarthen?
In Wales a single-storey rear extension is often permitted development: up to 4 metres beyond the rear wall and up to 4 metres high, with eaves no higher than 3 metres within 2 metres of a boundary and no more than half the land around the original house covered. Wales has no larger home extension prior approval route, so deeper extensions need a planning application, as do extensions to flats, listed buildings and houses whose rights have been removed.
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.