Local costs · East Midlands · September 2026
How much does an extension cost in Erewash?
A mid-range 25 m² single-storey extension in Erewash costs about £60,000 to £74,000 including VAT, or £2,400 to £3,000 per m² at East Midlands prices. Erewash charges £882 for building control on a 10 to 40 m² extension (full plans, VAT status not stated): 5% above the typical council (£840). With design, a structural engineer, building control and a 15% contingency, budget £75,000 to £97,000.
Work out your project in Erewash
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Typical prices in Erewash
| Project | Building work | Budget to plan for |
|---|---|---|
| Single-storey extension, 25 m² | £60,000 to £74,000 | £75,000 to £97,000 |
| Double-storey extension, 40 m² | £86,500 to £109,000 | £107,000 to £140,000 |
| Dormer loft conversion, 30 m² | £53,500 to £66,000 | £67,000 to £86,000 |
| Kitchen, medium | £8,800 to £15,600 | £10,100 to £17,900 |
| Bathroom refit | £5,800 to £8,700 | £6,700 to £10,000 |
Building prices in East Midlands run about 5% below the UK average outside London. Kitchens and bathrooms vary less from place to place than extensions and lofts.
Building control fees in Erewash
| Work | Charge |
|---|---|
| Extension up to 10 m² (full plans) | £670 |
| Extension 10 to 40 m² (full plans) | £882 |
| Larger extension, over 40 m² (full plans) | £1,110 |
| Extension 10 to 40 m² (building notice) | £926 |
| Loft conversion up to 40 m² | £857 |
| Garage conversion | £504 |
Erewash charges £882 for building control on a 10 to 40 m² extension (full plans, VAT status not stated): 5% above the typical council (£840). Source: Erewash's building control charges, 1 April 2026. VAT status not stated for the table (a GBP126 deposit is described as "including VAT").
Check before relying on it: the schedule does not say whether VAT is included.
Private approved inspectors set their own prices and are often competitive, so it is worth asking one or two for a quote as well. See how Erewash compares with every council we checked.
Notes on Erewash's schedule
Own page. Loft figure is roof conversion with dormer (without 731).
Planning
If your extension needs planning permission, a householder application in England costs £548. Many single-storey rear extensions are permitted development and need no application, and a lawful development certificate (£274) confirms it.
Other councils in East Midlands
Building control for a 10 to 40 m² extension:
- Nottingham: £762
- Bassetlaw: £786
- Blaby: £793
- Harborough: £793
- Hinckley and Bosworth: £793
- Melton: £793
- Oadby and Wigston: £793
- Rutland: £793
Questions people ask
How much does an extension cost in Erewash?
A mid-range 25 m² single-storey extension in Erewash costs about £60,000 to £74,000 including VAT for the building work, or £2,400 to £3,000 per m², based on East Midlands prices reviewed in September 2026. With fees and a 15% contingency, budget £75,000 to £97,000.
How much is building control in Erewash?
Erewash charges £882 (VAT status not stated) for a 10 to 40 m² extension (full plans), according to its published schedule (1 April 2026).
How much does a loft conversion cost in Erewash?
A mid-range 30 m² dormer loft conversion in Erewash costs about £53,500 to £66,000 including VAT for the building work, and about £67,000 to £86,000 with fees and a 15% contingency.
Before you get quotes
- How to compare builders' quotes line by line
- Plan your whole budget, including the costs people forget
- Trades: price an extension element by element with editable unit rates