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 Colwyn Bay?
In Colwyn Bay, 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. Building costs in Wales run about 8% below the UK average, and the figures for Colwyn Bay are adjusted to reflect that. 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 |
The main things that change the cost:
- Finishes
- Whether you live in during the work
- Windows and doors
- Extent of rewiring and replumbing
Use the guide price tool to see how size and specification change the figure, then ask for a written, itemised quote.
Do you need planning permission for a house renovation in Colwyn Bay?
Before anything is built in Colwyn Bay, we confirm which approvals apply 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.
At the survey we check your house’s planning history and any restrictions, and tell you which route applies.
What we handle
Handled as part of most house renovations:
- Joinery, doors and floors
- Decoration
- Kitchens and bathrooms
- Condition survey and scope of works
- Plastering and boarding
- Building control for notifiable work
How long does it take?
The build itself usually takes 8 to 20 weeks on site depending on scope. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Colwyn Bay
Wales has many terraced valley streets, stone cottages and post-war estates, so extension designs are shaped by slopes, materials and local character.
Colwyn Bay sits in Clwyd, about 35 miles north-west of Wrexham. We cover the whole of Colwyn Bay, including postcodes LL29.
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
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions about house renovations in Colwyn Bay
Do I need planning permission for a house renovation in Colwyn Bay?
In Wales internal renovation usually does not need planning permission unless the house is listed. Notifiable work must meet building regulations.
Who approves a house renovation in Colwyn Bay?
Planning matters in Colwyn Bay go to the council covering your address, and the work needs building control approval. We prepare and submit the applications for you.
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.
How much does a house renovation cost in Colwyn Bay?
In Colwyn Bay, 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.
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.
How long does a full renovation take?
Typically 8 to 20 weeks on site depending on the size of the house and scope.
