Two-storey side extensions in Nottinghamshire

What a two-storey side extension involves

A two-storey side extension suits a detached or semi-detached house with a side garden, driveway or garage wide enough to build on. You get a design that sits comfortably on the street, a planning application or permitted development check depending on your nation, structural design, building regulations approval and the build itself. We manage the whole process, and the work is carried out by vetted teams working under S&K.

Towns in Nottinghamshire include Nottingham (NG1), Mansfield (NG18), Worksop (S80), Newark-on-Trent (NG23), Arnold (NG4) and West Bridgford (NG2). If yours isn't listed, we still cover it.

Guide price in the East Midlands

A guide price for Nottinghamshire: around £84,500–£113,000 for a 3 m × 7 m footprint on two floors (42 m² of new floor space). That works out at £2,010–£2,700 per m² of new floor space, including VAT at 20%. Design fees, structural calculations and approval fees are separate and listed on our prices page.

Rules in England

In England, a two-storey side extension always needs householder planning permission, because permitted development only allows single-storey extensions beyond a side wall. The fee is £548 (or £575 for applications made from 8 December 2026), and councils should decide within 8 weeks of validation. Expect them to look at set-back, roof height, gaps to the boundary and the effect on neighbours.

The Party Wall etc. Act 1996 applies, so notices may be needed for work on or near a shared wall or boundary.

Getting the design right

Avoiding a terracing effect

Where semi-detached houses sit close together, side extensions on neighbouring houses can join up and turn a row of pairs into a terrace. Many councils ask for a gap to the boundary at first floor to stop this, so we check local guidance before fixing the width.

Set-down and set-back

Councils usually want a two-storey side extension to look subordinate to the house. Setting the front wall back from the main front and dropping the ridge slightly below the main roof helps it read as an addition, and is often expected in local design guidance.

How we work in Nottinghamshire

1. Look at the house

   We start in Nottinghamshire with a free visit: measurements, photos, a look at the loft and drains, and a frank chat about budget.

2. Choose the approval route

   Some designs fit permitted development, most need a householder application. We decide which applies in England before drawing in detail.

3. Engineer it

   Foundations sized for two floors, steels for any openings, and building control approval, all before anyone starts on site.

4. Build and sign-off

   Vetted teams working under S&K build the extension, and we arrange the building control completion certificate at the end.

Towns we cover in Nottinghamshire

• Nottingham
• Mansfield
• Worksop
• Newark-on-Trent
• Arnold
• West Bridgford
• Sutton-in-Ashfield
• Hucknall
• Kirkby-in-Ashfield
• Retford
• Eastwood
• Mansfield Woodhouse
• Basford
• Shirebrook
• Boughton
• Warsop

Neighbouring areas

• Two-storey side extensions in Derbyshire
• Two-storey side extensions in South Yorkshire
• Two-storey side extensions in Leicestershire
• Two-storey side extensions in Rutland

All extension services in Nottinghamshire · About two-storey side extensions