What is a house renovation?

A house renovation brings an older or tired home up to date. It can include rewiring, a new heating system, replastering, new floors, windows, kitchens and bathrooms, and changes to the layout. A full renovation is often combined with an extension or loft conversion.
How much does a house renovation cost in Carmarthen?
In Carmarthen, a house renovation typically costs £850–£1,650 per m² for a medium to full renovation, including VAT at 20% (5% may apply to homes empty for two years or more). For a typical 90 m² project that is roughly £76,500–£148,500. The guide for Carmarthen reflects typical costs in Wales, roughly 8% below the UK-wide figure. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (63 m²) | £53,500–£104,000 |
| Typical project (90 m²) | £76,500–£148,500 |
| Larger project (126 m²) | £107,000–£208,000 |
| Rate per m² | £850–£1,650 |
Your quote will depend mainly on:
- Whether you live in during the work
- Structural and damp repairs
- Finishes
- Kitchens and bathrooms
Your exact price depends on the survey and drawings. The guide price tool gives a quick range in the meantime.
Do you need planning permission for a house renovation in Carmarthen?
The approval route for Carmarthen is set by planning law in Wales. In Wales internal renovation usually does not need planning permission unless the house is listed. Notifiable work must meet building regulations.
The Party Wall etc. Act 1996 applies in Wales, so notices must be served before work on a shared wall, on the boundary, or excavation close to a neighbour’s foundations.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
On a typical house renovation we handle:
- Decoration
- Kitchens and bathrooms
- Condition survey and scope of works
- Rewiring and heating upgrades
- Structural repairs and damp treatment
- Plastering and boarding
How long does it take?
Expect 8 to 20 weeks on site depending on scope. Before that, surveys, drawings and approvals usually take 6 to 12 weeks, longer if the council asks for changes.
Building in Carmarthen
Terraced houses in Welsh towns often have narrow plots, which suits rear and side return extensions and rear dormers.
Carmarthen sits in Dyfed. We cover the whole of Carmarthen, including postcodes SA31.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions about house renovations in Carmarthen
How long does a full renovation take?
Typically 8 to 20 weeks on site depending on the size of the house and scope.
Does a renovation need building regulations approval?
Some parts do, such as rewiring, structural changes, new windows and heating systems. We handle notifications.
How much does a house renovation cost in Carmarthen?
In Carmarthen, a house renovation typically costs £850–£1,650 per m² for a medium to full renovation, including VAT at 20% (5% may apply to homes empty for two years or more). A typical 90 m² project comes to roughly £76,500–£148,500. Your fixed price depends on the survey and drawings.
Who approves a house renovation in Carmarthen?
Planning matters in Carmarthen go to the council covering your address, and the work needs building control approval. We prepare and submit the applications for you.
Do I need planning permission for a house renovation in Carmarthen?
In Wales internal renovation usually does not need planning permission unless the house is listed. Notifiable work must meet building regulations.
Can I live in the house during a renovation?
For light work, yes. For a full renovation, most clients move out for some or all of the job.
