Somerset
Rear extensions in Bishopsworth
Rear extensions in Bishopsworth: single-storey and two-storey extensions, side returns, wraparounds and glass-led designs, planned around Victorian terraces and post-war semis and the English rules.
Bishopsworth is in Somerset, with postcode districts including BS3, BS13 and BS14. The nearest places we also cover are Bristol (3.0 miles) and Keynsham (5.3 miles).
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Tell us about the house and we'll call to arrange a free, no-obligation visit.
Rear extensions we build in Bishopsworth
- Single-storey rear extensions
- Two-storey rear extensions
- Kitchen-diner rear extensions
- Side return extensions
- Wraparound extensions
- Glazed and glass-box rear extensions
- Rear extensions for terraced houses
- Rear extensions for semi-detached houses
- Rear extensions for bungalows
- Rear extension plans and planning applications
Also available across Somerset:
- Rear extensions for detached houses
- Flat-roof rear extensions
- Pitched and lean-to roof rear extensions
- Knocking through to a rear extension
- Roof lanterns and rooflights for rear extensions
- Permitted development rear extensions
- Larger home extension prior approval (England)
- Building Regulations for rear extensions
Rear extension prices in Bishopsworth
South West prices run slightly above our West Midlands baseline; natural stone to match the house is the main variable.
| Example | Guide inc VAT |
|---|---|
| Single-storey, 3 m × 4 m (12 m²) | £23,500–£38,500 |
| Single-storey, 4 m × 6 m (24 m²) | £47,500–£77,500 |
| Two-storey, 3 m × 5 m footprint (30 m²) | £56,000–£84,000 |
| Side return, about 14 m² | £33,500–£55,500 |
| Wraparound, about 25 m² | £57,000–£93,500 |
What are homes in Bishopsworth like to extend?
Bishopsworth has Victorian terraces nearer the centre and post-war semis on the edges. Sloping gardens are frequent, which affects floor levels and steps down to the patio.
Planning rules for Bishopsworth
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is within 2 metres of a boundary.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
Every rear extension in England needs Building Regulations approval, whether or not planning is needed. You can use the council's building control service or a registered building control approver, by full plans (checked before work, usually within five weeks) or a building notice, and you get a completion certificate at the end.
Nearby towns
FAQ
Questions people ask
How much is a rear extension in Bishopsworth?
A 3 m × 4 m single-storey rear extension is about £23,500–£38,500 including VAT at our South West England guide rates; the written price follows a survey.
Do I need planning permission in Bishopsworth?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Is the site visit in Bishopsworth free?
Yes, with no obligation.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.