East Riding of Yorkshire
Two-storey rear extensions in the East Riding of Yorkshire
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. Across the East Riding of Yorkshire we handle the whole rear extension: survey, drawings, the planning route, building control and the build. Towns we cover here include Kingston upon Hull, Bridlington and Beverley.

In Kingston upon Hull, a two-storey rear extension is worth comparing with the cost of moving once stamp duty, agents' and legal fees are counted. East Riding of Yorkshire has through terraces and some back-to-backs as well as later semis; back-to-backs have little or no rear space, so we look at side or loft options there.
How much does a two-storey rear extension cost in the East Riding of Yorkshire?
For East Riding of Yorkshire we work from the Yorkshire and the Humber rate: £1,670–£2,510 per square metre of new floor, including VAT, standard specification. Yorkshire prices sit below our West Midlands baseline; matching natural stone is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £50,000–£75,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £80,500–£120,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission in the East Riding of Yorkshire?
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent.
Where in the East Riding of Yorkshire do we work?
FAQ
Questions people ask
Does a two-storey rear extension need planning permission?
Almost always. England and Northern Ireland allow 3 metres without an application only if at least 7 metres remains to the rear boundary; Wales and Scotland are similar or stricter.
Is two-storey cheaper per square metre than single-storey?
Usually yes, because the foundations and roof are shared across twice the floor area. The total cost is higher.
Can I add an en-suite upstairs?
Yes. We plan the soil pipe route early so the bathroom sits where drainage works without boxing through the room below.
Do you cover all of the East Riding of Yorkshire?
We cover 7 towns and districts in the East Riding of Yorkshire, including Kingston upon Hull, Bridlington and Beverley.
Who builds the extension?
Vetted building teams working under contract to us; your contract is with S&K Property Investments and Improvement Ltd.