Two-storey extensions in Amersham
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Amersham.
Amersham at a glance
- Postcode districts
- HP7 and HP16
- Area
- Buckinghamshire, England
- Price region
- South East England
- Nearest towns
- Amersham on the Hill (0.7 miles), Chesham (2.4 miles), Beaconsfield (4 miles), Chorleywood (4.5 miles)
- Distance to Milton Keynes
- about 26.6 miles
- Approvals
- Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission.
Around Amersham we also work in Amersham on the Hill, Chesham and Beaconsfield, and across the rest of Buckinghamshire. Postcode districts in and near Amersham: HP7 and HP16.
Extensions available in Amersham
Two-storey rear extensions
Design, approvals and build for Amersham homes. Guide from £61,500.
Learn more
Two-storey side extensions
Guide from £94,500 in Amersham, including VAT.
Learn more
Two-storey wraparound extensions
Our South East England guide starts at £132,500 for this type.
Learn more
Part single, part two-storey extensions
Our South East England guide starts at £79,000 for this type.
Learn more
Extensions over a garage
Design, approvals and build for Amersham homes. Guide from £34,500.
Learn more
First-floor extensions
Amersham guide price from £27,500, Standard spec.
Learn more
Two-storey extensions for semi-detached houses
Our South East England guide starts at £61,500 for this type.
Learn more
Two-storey extensions for detached houses
For homes in Amersham: typical guide from £94,500.
Learn more
Kitchen extensions with bedrooms above
Amersham guide price from £61,500 (before kitchen units), Standard spec.
Learn more
Extra bedroom and en-suite extensions
Guide from £61,500 (plus en-suite) in Amersham, including VAT.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
Also available in Buckinghamshire
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Amersham
Amersham is in England. Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission. Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
The full England rules explained
Questions about extensions in Amersham
Do you cover Amersham?
Yes. We cover Amersham (HP7 and HP16) and the surrounding area, including Amersham on the Hill and Chesham. The first site visit is free.
What does a two-storey extension cost in Amersham?
Using our South East England guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £61,500–£83,000 including VAT. An extension over a garage is about £34,500–£50,500.
Which other places near Amersham do you cover?
Everywhere around it, including Amersham on the Hill (0.7 miles), Chesham (2.4 miles) and Beaconsfield (4 miles), and the rest of Buckinghamshire.