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 Merthyr Tydfil?
In Merthyr Tydfil, 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. Prices across Wales are typically 8% below the UK average for this kind of work, which is reflected in the range for Merthyr Tydfil. 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:
- Finishes
- Whether you live in during the work
- Windows and doors
- Extent of rewiring and replumbing
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 house renovation in Merthyr Tydfil?
Here is how the rules work for a house renovation 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.
We check this for your address before design work starts, so there are no surprises later.
What we handle
On a typical house renovation we handle:
- Building control for notifiable work
- Decoration
- Rewiring and heating upgrades
- Joinery, doors and floors
- Structural repairs and damp treatment
- Plastering and boarding
How long does it take?
Build time is typically 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 Merthyr Tydfil
Terraced houses in Welsh towns often have narrow plots, which suits rear and side return extensions and rear dormers.
Our Merthyr Tydfil coverage includes postcode districts CF47, and we also work in nearby places such as Aberdare, Rhondda and Ebbw Vale.
How it works
- 01
Free visit
We look at the property, talk through what you want and measure up. There is no charge and no obligation.
- 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 about house renovations in Merthyr Tydfil
How much does a house renovation cost in Merthyr Tydfil?
In Merthyr Tydfil, 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.
How long does a full renovation take?
Typically 8 to 20 weeks on site depending on the size of the house and scope.
Who approves a house renovation in Merthyr Tydfil?
Planning matters in Merthyr Tydfil 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 Merthyr Tydfil?
In Wales internal renovation usually does not need planning permission unless the house is listed. Notifiable work must meet building regulations.
Is VAT reduced on renovations?
Usually not; the standard 20% rate applies. A reduced 5% rate can apply when renovating a home that has been empty for at least two years.
Do you renovate listed buildings?
Yes, with listed building consent and appropriate materials.
