Rear extension planning drawings in Mablethorpe

What do rear extension planning drawings cost in Mablethorpe?

As a guide, £1,000–£2,500 including VAT for a single-storey rear extension, or £2,000–£3,500 for a two-storey scheme. A householder planning application in England costs £548 (£575 for applications made from 8 December 2026), and a lawful development certificate for proposed work costs half the householder fee. Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.

Do you need planning permission for a rear extension in Mablethorpe?

Here is how the rules in England apply to a rear extension in Mablethorpe.

England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.

Councils aim to decide householder applications within 8 weeks of validation, and prior approval within 42 days.

Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.

What are homes in Mablethorpe like to extend?

Red-brick terraces and semis are typical of Mablethorpe. Coal-mining legacy areas in parts of the East Midlands can need a Coal Authority check before foundations are designed.

How a rear extension in Mablethorpe comes together

1. Free site visit

   We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.

2. Drawings and budget

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

3. Planning and regulations

   We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.

4. Build and sign-off

   We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.

Rear extension planning drawings near Mablethorpe

Close by, we work in Louth, about 11.1 miles away, and Skegness, about 14.0 miles away.

• Rear extension planning drawings in Louth
• Rear extension planning drawings in Skegness
• Rear extension planning drawings in Cleethorpes
• Rear extension planning drawings in Grimsby
• Rear extension planning drawings in Immingham

Other work in Mablethorpe:

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

All rear extensions in Mablethorpe