What is a new build home?
A new build home is a house built from the ground up on a cleared plot, a garden plot or a replacement-dwelling site. We work with plot owners and self-builders to design, gain approvals and build the house, either to a fixed design or from initial ideas.
How much does a new build home cost in Carmarthen?
In Carmarthen, a new build home typically costs £1,850–£2,950 per m² of floor area (build cost), including VAT at 0% (zero-rated for qualifying new dwellings). For a typical 150 m² project that is roughly £277,500–£442,500. Building costs in Wales run about 8% below the UK average, and the figures for Carmarthen are adjusted to reflect that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (105 m²) | £194,000–£310,000 |
| Typical project (150 m²) | £277,500–£442,500 |
| Larger project (210 m²) | £388,500–£619,500 |
| Rate per m² | £1,850–£2,950 |
What moves the price most:
- Size and complexity of the house
- Specification and energy systems
- External works and landscaping
- Site access and demolition
A guide range is only a starting point: the guide price tool gives an instant figure for your size, and a free survey turns it into a fixed quote.
Do you need planning permission for a new build home in Carmarthen?
Before anything is built in Carmarthen, we confirm which approvals apply in Wales. In Wales a new home needs full planning permission. Welsh building regulations require automatic fire suppression (sprinklers) in new homes, and sustainable drainage approval from the council’s SuDS approval body is needed for most new buildings.
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.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
The work we manage on a new build home:
- Structural and services design
- Design and planning application
- Superstructure, roof and windows
- Groundworks, foundations and drainage
- Building control completion and warranty liaison
- Site appraisal and feasibility
How long does it take?
Build time is typically 9 to 14 months on site for a typical house. Design and approvals come first and typically take 4 to 9 months, depending on the approval route.
Building in Carmarthen
Wales has many terraced valley streets, stone cottages and post-war estates, so extension designs are shaped by slopes, materials and local character.
We work across Carmarthen and neighbouring areas such as Llanelli, Ammanford and Gorseinon. Postcodes we cover in Carmarthen include SA31.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions about new build homes in Carmarthen
Is VAT charged on building a new house?
Construction services for a new dwelling are normally zero-rated when supplied by a VAT-registered builder. Self-builders who buy materials directly can reclaim VAT through HMRC’s DIY housebuilders scheme.
How long does a new build take?
A typical house takes 9 to 14 months on site after approvals.
Do I need planning permission for a new build home in Carmarthen?
In Wales a new home needs full planning permission. Welsh building regulations require automatic fire suppression (sprinklers) in new homes, and sustainable drainage approval from the council’s SuDS approval body is needed for most new buildings.
Can you build to my architect’s design?
Yes. We price and build from your drawings, or we can manage the design for you.
Do you build new build homes in Carmarthen?
Yes. We build new build homes across Carmarthen, including postcodes SA31. Every project starts with a free home visit.
How much does a new build home cost in Carmarthen?
In Carmarthen, a new build home typically costs £1,850–£2,950 per m² of floor area (build cost), including VAT at 0% (zero-rated for qualifying new dwellings). A typical 150 m² project comes to roughly £277,500–£442,500. Your fixed price depends on the survey and drawings.