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 Coulsdon?
In Coulsdon, a house renovation typically costs £1,150–£2,350 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 £103,500–£211,500. Prices across London are typically 30% above the UK average for this kind of work, which is reflected in the range for Coulsdon. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (63 m²) | £72,500–£148,000 |
| Typical project (90 m²) | £103,500–£211,500 |
| Larger project (126 m²) | £145,000–£296,000 |
| Rate per m² | £1,150–£2,350 |
What moves the price most:
- Windows and doors
- Whether you live in during the work
- Kitchens and bathrooms
- Extent of rewiring and replumbing
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 Coulsdon?
Before anything is built in Coulsdon, we confirm which approvals apply in England. In England internal renovation usually does not need planning permission unless the house is listed, when listed building consent covers internal work too. Notifiable work such as rewiring, structural changes, new windows and heating must meet building regulations.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
At the survey we check your house’s planning history and any restrictions, and tell you which route applies.
What we handle
On a typical house renovation we handle:
- Condition survey and scope of works
- Rewiring and heating upgrades
- Building control for notifiable work
- Joinery, doors and floors
- Decoration
- Kitchens and bathrooms
How long does it take?
Expect 8 to 20 weeks on site depending on scope. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Coulsdon
Many London boroughs have conservation areas and detailed design guides, so early design advice saves time at the planning stage.
Projects in Coulsdon (CR5) are surveyed in person before we quote, so the price reflects your actual property.
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
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions about house renovations in Coulsdon
Do you build house renovations in Coulsdon?
Yes. We build house renovations across Coulsdon, including postcodes CR5. Every project starts with a free home visit.
How much does a house renovation cost in Coulsdon?
In Coulsdon, a house renovation typically costs £1,150–£2,350 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 £103,500–£211,500. 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.
Do I need planning permission to renovate?
Internal work usually does not need planning permission unless the house is listed. External changes may.
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.
