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 Harrow?
In Harrow, 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. Building costs in London run about 30% above the UK average, and the figures for Harrow are adjusted to reflect that. 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 |
The biggest cost drivers are:
- Windows and doors
- Whether you live in during the work
- Finishes
- 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 Harrow?
The approval route for Harrow is set by planning law 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.
Where work involves a shared wall, building on the boundary, or digging foundations within 3 metres of a neighbour’s building and deeper than its foundations (or within 6 metres for deeper work), the Party Wall etc. Act 1996 applies and notices must be served before work starts.
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
- Joinery, doors and floors
- Plastering and boarding
- Structural repairs and damp treatment
- Rewiring and heating upgrades
- Kitchens and bathrooms
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 Harrow
Many London boroughs have conservation areas and detailed design guides, so early design advice saves time at the planning stage.
Projects in Harrow (HA2) are surveyed in person before we quote, so the price reflects your actual property.
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 fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 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 Harrow
Do I need planning permission to renovate?
Internal work usually does not need planning permission unless the house is listed. External changes may.
Do you renovate listed buildings?
Yes, with listed building consent and appropriate materials.
How much does a house renovation cost in Harrow?
In Harrow, 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 you build house renovations in Harrow?
Yes. We build house renovations across Harrow, including postcodes HA2. Every project starts with a free home visit.