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West Yorkshire

Rear extensions in Chapel Allerton

Rear extensions in Chapel Allerton: single-storey and two-storey extensions, side returns, wraparounds and glass-led designs, planned around stone terraces and brick semis and the English rules.

Chapel Allerton is in West Yorkshire, with postcode districts including LS6, LS7 and LS8. The nearest places we also cover are Leeds (2.3 miles) and Horsforth (4.2 miles).

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Rear extensions we build in Chapel Allerton

Also available across West Yorkshire:

Rear extension prices in Chapel Allerton

Yorkshire prices sit below our West Midlands baseline; matching natural stone is the main variable.

ExampleGuide inc VAT
Single-storey, 3 m × 4 m (12 m²)£21,000–£34,500
Single-storey, 4 m × 6 m (24 m²)£42,500–£69,000
Two-storey, 3 m × 5 m footprint (30 m²)£50,000–£75,500
Side return, about 14 m²£30,000–£49,500
Wraparound, about 25 m²£51,000–£83,500

What are homes in Chapel Allerton like to extend?

Stone terraces and brick semis are typical of Chapel Allerton. Matching sandstone or gritstone on a terrace is one of the biggest cost variables, and reclaimed stone is often the best match.

Planning rules for Chapel Allerton

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.

Planning and Building Regulations are separate in England: even a permitted development extension is inspected for foundations, drainage, structure, insulation, fire safety and ventilation, through the council or a registered building control approver, ending with a completion certificate.

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FAQ

Questions people ask

How much is a rear extension in Chapel Allerton?

A 3 m × 4 m single-storey rear extension is about £21,000–£34,500 including VAT at our Yorkshire and the Humber guide rates; the written price follows a survey.

Do I need planning permission in Chapel Allerton?

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 Chapel Allerton 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.

Next step

See what your rear extension would cost

Get a guide price online in a couple of minutes, or book a free site visit and we'll measure up and talk you through the planning route.

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