Two-storey extensions in Tunbridge Wells
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Tunbridge Wells.
Tunbridge Wells at a glance
- Postcode districts
- TN1, TN2, TN3 and TN4
- Area
- Kent, England
- Price region
- South East England
- Nearest towns
- Tonbridge (4.3 miles), Crowborough (6.6 miles), Sevenoaks (10.2 miles), East Grinstead (11.7 miles)
- Distance to Maidstone
- about 14.4 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 Tunbridge Wells we also work in Tonbridge, Crowborough and Sevenoaks, and across the rest of Kent. Postcode districts in and near Tunbridge Wells: TN1, TN2, TN3 and TN4.
Extensions available in Tunbridge Wells
Two-storey rear extensions
Guide from £61,500 in Tunbridge Wells, including VAT.
Learn more
Two-storey side extensions
For homes in Tunbridge Wells: typical guide from £94,500.
Learn more
Two-storey wraparound extensions
Guide from £132,500 in Tunbridge Wells, including VAT.
Learn more
Part single, part two-storey extensions
Guide from £79,000 in Tunbridge Wells, including VAT.
Learn more
Extensions over a garage
For homes in Tunbridge Wells: typical guide from £34,500.
Learn more
First-floor extensions
For homes in Tunbridge Wells: typical guide from £27,500.
Learn more
Two-storey extensions for semi-detached houses
Tunbridge Wells guide price from £61,500, Standard spec.
Learn more
Two-storey extensions for detached houses
Guide from £94,500 in Tunbridge Wells, including VAT.
Learn more
Kitchen extensions with bedrooms above
Design, approvals and build for Tunbridge Wells homes. Guide from £61,500 (before kitchen units).
Learn more
Extra bedroom and en-suite extensions
Design, approvals and build for Tunbridge Wells homes. Guide from £61,500 (plus en-suite).
Learn moreWhich type suits your house?
Which type suits your house in Tunbridge Wells depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
Also available in Kent
- 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 Tunbridge Wells
Tunbridge Wells 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 Tunbridge Wells
Do you cover Tunbridge Wells?
Yes. We cover Tunbridge Wells (TN1, TN2, TN3 and TN4) and the surrounding area, including Tonbridge and Crowborough. The first site visit is free.
What does a two-storey extension cost in Tunbridge Wells?
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 Tunbridge Wells do you cover?
Everywhere around it, including Tonbridge (4.3 miles), Crowborough (6.6 miles) and Sevenoaks (10.2 miles), and the rest of Kent.