Bungalow rear extension in Farnworth

How much does a bungalow rear extension cost in Farnworth?

For Farnworth we work from the North West England rate: £1,740–£2,820 per square metre of new floor, including VAT, standard specification. North West prices sit below our West Midlands baseline; access on terraced streets is the main variable.

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 for a bungalow rear extension in Farnworth?

Whether your bungalow rear extension in Farnworth needs a planning application depends on its size, your house and any local restrictions.

English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres 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.

Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.

What are homes in Farnworth like to extend?

Stone and brick terraces are common around Farnworth. Where houses back onto a ginnel or alley, deliveries can come in from the rear, which makes the build tidier.

How a bungalow rear extension in Farnworth comes together

1. Look round and measure

   A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.

2. Drawings and budget

   Floor plans and elevations for the options, each with a guide price.

3. Approvals

   Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.

4. Written price, then build

   Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.

Bungalow rear extensions near Farnworth

Close by, we work in Little Lever, about 1.3 miles away, and Kearsley, about 1.3 miles away.

• Bungalow rear extension in Little Lever
• Bungalow rear extension in Kearsley
• Bungalow rear extension in Little Hulton
• Bungalow rear extension in Walkden
• Bungalow rear extension in Bolton

Other work in Farnworth:

• Single-storey rear extension
• Two-storey rear extension
• Kitchen-diner rear extension
• Side return extension
• Wraparound extension
• Glazed rear extension

All rear extensions in Farnworth