Local costs · Yorkshire and the Humber · September 2026
How much does an extension cost in Hull?
A mid-range 25 m² single-storey extension in Hull costs about £58,000 to £72,000 including VAT, or £2,300 to £2,900 per m² at Yorkshire and the Humber prices. Hull charges £577 for building control on a 10 to 40 m² extension (full plans, VAT status not stated): the 3rd cheapest of the 91 councils we checked, 31% below the typical council (£840). With design, a structural engineer, building control and a 15% contingency, budget £72,500 to £94,000.
Work out your project in Hull
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Typical prices in Hull
| Project | Building work | Budget to plan for |
|---|---|---|
| Single-storey extension, 25 m² | £58,000 to £72,000 | £72,500 to £94,000 |
| Double-storey extension, 40 m² | £84,000 to £106,000 | £103,000 to £136,000 |
| Dormer loft conversion, 30 m² | £52,000 to £64,000 | £65,000 to £83,000 |
| Kitchen, medium | £8,600 to £15,400 | £9,900 to £17,700 |
| Bathroom refit | £5,700 to £8,600 | £6,600 to £9,900 |
Building prices in Yorkshire and the Humber run about 8% below the UK average outside London. Kitchens and bathrooms vary less from place to place than extensions and lofts.
Building control fees in Hull
| Work | Charge |
|---|---|
| Extension up to 10 m² (full plans) | £577 |
| Extension 10 to 40 m² (full plans) | £577 |
| Larger extension, <60 m² (single band) (full plans) | £577 |
| Extension 10 to 40 m² (building notice) | £577 |
| Loft conversion up to 40 m² | £588 |
| Garage conversion | £334 |
Hull charges £577 for building control on a 10 to 40 m² extension (full plans, VAT status not stated): the 3rd cheapest of the 91 councils we checked, 31% below the typical council (£840). Source: Hull's building control charges, 6 April 2026. VAT status not stated in document.
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 Hull compares with every council we checked.
Notes on Hull's schedule
Own schedule. Single band for single-storey extensions under 60 m2.
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 Yorkshire and the Humber
Building control for a 10 to 40 m² extension:
Questions people ask
How much does an extension cost in Hull?
A mid-range 25 m² single-storey extension in Hull costs about £58,000 to £72,000 including VAT for the building work, or £2,300 to £2,900 per m², based on Yorkshire and the Humber prices reviewed in September 2026. With fees and a 15% contingency, budget £72,500 to £94,000.
How much is building control in Hull?
Hull charges £577 (VAT status not stated) for a 10 to 40 m² extension (full plans), according to its published schedule (6 April 2026).
How much does a loft conversion cost in Hull?
A mid-range 30 m² dormer loft conversion in Hull costs about £52,000 to £64,000 including VAT for the building work, and about £65,000 to £83,000 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