Two-storey extensions in Gipsy Hill
We design, get approval for and build two-storey extensions in Gipsy Hill and the surrounding area. Choose the type of extension below or book a free site visit.
Gipsy Hill at a glance
- Postcode districts
- SE21 and SE27
- Area
- Greater London, England
- Price region
- London
- Nearest towns
- Crystal Palace (0.8 miles), Upper Norwood (0.9 miles), Norbury (1.3 miles), Streatham (1.7 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.
We cover postcode districts SE21 and SE27 in and around Gipsy Hill, along with neighbouring Crystal Palace, Upper Norwood and Norbury.
Extensions available in Gipsy Hill

Two-storey rear extensions
Our London guide starts at £67,000 for this type.
Learn more
Two-storey side extensions
From £103,500 in Gipsy Hill. Free visit to firm it up.
Learn more
Two-storey wraparound extensions
Gipsy Hill guide price from £144,500, Standard spec.
Learn more
Part single, part two-storey extensions
Our London guide starts at £86,500 for this type.
Learn more
Extensions over a garage
Gipsy Hill guide price from £38,000, Standard spec.
Learn more
First-floor extensions
From £30,000 in Gipsy Hill. Free visit to firm it up.
Learn more
Two-storey extensions for semi-detached houses
Guide from £67,000 in Gipsy Hill, including VAT.
Learn more
Two-storey extensions for detached houses
Gipsy Hill guide price from £103,500, Standard spec.
Learn more
Kitchen extensions with bedrooms above
For homes in Gipsy Hill: typical guide from £67,000 (before kitchen units).
Learn more
Extra bedroom and en-suite extensions
Guide from £67,000 (plus en-suite) in Gipsy Hill, including VAT.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in Greater London, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in Greater London
- 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 Gipsy Hill
Gipsy Hill 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 Gipsy Hill
Do you cover Gipsy Hill?
Yes. We cover Gipsy Hill (SE21 and SE27) and the surrounding area, including Crystal Palace and Upper Norwood. The first site visit is free.
What does a two-storey extension cost in Gipsy Hill?
Using our London 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 £67,000–£90,500 including VAT. An extension over a garage is about £38,000–£55,000.
Which other places near Gipsy Hill do you cover?
Everywhere around it, including Crystal Palace (0.8 miles), Upper Norwood (0.9 miles) and Norbury (1.3 miles), and the rest of Greater London.