Home extensions in Hull
Planning an extension in Hull? Compare extension types, see guide prices adjusted for Hull and book a free site visit.
- Postcode districtsHU1, HU2, HU3, HU5, HU8, HU9
- Price regionYorkshire and the Humber (×0.94)
- Planning rulesEngland
- Site visitFree, no obligation
Hull extension prices at a glance
We publish guide prices so you can budget before anyone visits. For Hull they are adjusted by ×0.94, the factor we use across Yorkshire and the Humber.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £23,500 – £30,500 |
| Wraparound extensions | 25 m² | £54,000 – £68,500 |
| Orangery extensions | 16 m² | £42,000 – £53,000 |
| Conservatory replacement extensions | 14 m² | £28,000 – £36,500 |
| Single-storey rear extensions | 20 m² | £38,500 – £49,000 |
| Kitchen extensions | 20 m² | £39,000 – £50,000 |
Covering Hull and nearby
Site visits are available across Hull (HU1, HU2, HU3, HU5, HU8, HU9). Nearby, we also take on projects in Beverley (8 miles), Brough (10 miles), Goole (22 miles), Bridlington (24 miles). For homes towards Lincolnshire, Grimsby is around 16 miles away.
Planning rules in Hull
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
What works best for Hull houses?
Homes across Yorkshire and the Humber range from back-to-back and through terraces to large suburban semis, and extension options vary with them.
Start by comparing pitched roof extensions, double-storey extensions and side return extensions: between them they cover most of the layouts we see requested for houses like these.
Every extension type in Hull
- Annexe extensions · from £51,500
- Flat roof extensions · from £19,500
- Home office extensions · from £15,000
- Side return extensions · from £16,500
- Utility and boot room extensions · from £13,000
- Extensions over a garage · from £22,500
- Glass box extensions · from £28,000
- Wraparound extensions · from £33,500
- Conservatory replacement extensions · from £18,500
- Building regulations for extensions · from £800
- Bungalow extensions · from £24,500
- Planning permission for extensions · from £300
- Double-storey extensions · from £35,500
- Timber frame extensions · from £19,500
- Porch extensions · from £3,750
- Bedroom extensions · from £24,000
- Side extensions · from £20,500
- Extension plans and drawings · from £1,100
- Single-storey rear extensions · from £19,500
- Pitched roof extensions · from £20,500
- Orangery extensions · from £28,000
- Kitchen extensions · from £25,000
Free site visit
We visit your Hull home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Hull
How much does an extension cost in Hull?
Using our Yorkshire and the Humber factor (×0.94), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,000 including VAT, and a 32 m² two-storey extension £54,000 to £71,000. Your written price follows the survey.
Do I need planning permission for an extension in Hull?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Hull, and the guide-price tool gives a range for your own size and finish in about a minute.
How long does an extension take in Hull?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Book a free site visit in Hull
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.