What you could build at CR2 6LT: the planning rules at this address, what neighbours have built and how big, planning decisions nearby, rough costs and the value an extension adds, and how to get started. In South End & St Peter's Road, Croydon.
80extensions seen within 600 m in the last 10 years
8loft conversions within 600 m in the last 10 years
68extensions per 1,000 homes in the neighbourhood (10 years)
● work seen on energy certificates · ● application approved · ● refused · ● pending or other · ● this postcode
The rules at this address
Mostly flats at this postcode. Flats have no permitted development rights, so almost any extension or loft conversion needs planning permission, and the freeholder's consent under the lease.
In the The Waldrons conservation area: permitted development is narrower (for example no side extensions or roof cladding), and demolition and works to trees need consent.
No Article 4 direction recorded for this postcode.
Listed buildings need listed building consent for most changes, inside and out: check the National Heritage List.
To be certain work is permitted development, apply for a lawful development certificate (about £129 for householders in England). Building regulations apply either way.
Across England and Wales, homes extended by a typical 30 m² and then resold rose about 11.1% more than similar homes nearby over the same years (124,884 resales). How extensions pay off by size, type and region.
Single-storey rear or side extension: about £2,000–£3,000 per m² (London £2,500–£4,000), plus fees and VAT
Loft conversion: about £45,000–£75,000 for a dormer; more for a mansard or hip-to-gable
Two-storey extension: about £1,800–£2,800 per m² of new floor
Garage conversion: about £15,000–£30,000
Basement: about £3,500–£5,000 per m², London mostly
Build costs are rough 2026 ranges from industry guides, not quotes. Get three quotes for your plans.
Move or improve?
The money you don't get back either way, for the same extra space in South End & St Peter's Road.
Move to a home 20 m² bigger (about £357,000)
Stamp duty on the new home
£7,850
Estate agent on yours 1.2% + VAT
£3,888
Solicitors, buying and selling
£3,000
Survey
£600
Removals
£1,500
Money gone
£16,838
Extend by 20 m²
Building, plus 15% for design, planning and contingency
£57,500
Less what it adds to your home's value 60% of the local price
−£52,200
Money gone
£5,300
On these figures, extending loses about £11,538 less. Moving also changes the area, the schools and the commute; extending means months of building work and depends on planning.
Building costs vary a lot (a single-storey rear extension is often £2,000–£3,000 per m², more in London). How much space adds depends on the home and street: what extensions added to resale prices. A guide, not advice; nothing you type leaves this page.
Getting started
Look at what neighbours did. Open applications above to see drawings that were approved on similar houses, and who designed them.
Check the route: permitted development (with a lawful development certificate), prior approval for larger rear extensions, or full householder planning permission.
Get a measured survey and a designer: an architect, an architectural technologist or a designer who handles planning drawings.
Apply (householder permission is about £258 in England; councils aim to decide within 8 weeks).
Building regulations through the council's building control or an approved inspector, and party wall notices to neighbours if you build on or near the boundary.
Choose a builder: written quotes, a contract, staged payments, and check their insurance and references.
From energy certificates: an extension where a later certificate shows more floor space, a loft conversion where roof rooms appear. Certificates come with sales, lettings and some building work, so the year is when it was first seen.
Not every extension shows here. We only see building work when a new energy certificate is lodged, which happens when a home is sold, let or newly built. A loft or extension added since then won't appear, even with planning permission and building control sign-off, because those records aren't published as open data outside London. Missing work doesn't mean missing paperwork.
16, St Peter'S Road, Cr0 1hd
Porch or front extension
Approved
Mar 2026
25/03913/HSE
58, Wandle Road, Cr0 1dx
Rear extension
Approved
Feb 2026
25/03379/HSE
20, Dering Road, Cr0 1ds
Side return or wrap-around
Approved
Oct 2025
25/02774/HSE
245, Violet Lane, Cr0 4hn
Side return or wrap-around
Refused
Apr 2026
25/02686/HSE
26, Lower Coombe Street, Cr0 1aa
Loft or dormer
Approved
Sept 2025
25/02456/LP
15, Brafferton Road, Cr0 1ad
Loft or dormer
Refused
Aug 2025
25/01729/LE
107, Violet Lane, Cr0 4hl
Two-storey extension
Approved
Jul 2025
25/01888/HSE
245, Violet Lane, Cr0 4hn
Rear extension
Approved
Jul 2025
25/01782/GPDO
3, Crowley Crescent, Cr0 4ee
Rear extension
Approved
Jun 2025
25/01558/HSE
21, Keen'S Road, Cr0 1ah
Rear extension
Approved
Jun 2025
25/01246/HSE
129, Violet Lane, Cr0 4hl
Rear extension
Approved
May 2025
25/01303/GPDO
16, Crowley Crescent, Cr0 4eb
Rear extension
Approved
Apr 2025
25/00712/GPDO
139, Haling Park Road, Cr2 6nn
Rear extension
Approved
Apr 2025
25/00681/GPDO
9, Whitgift Avenue, Cr2 6az
Loft or dormer
Approved
May 2025
25/00378/HSE
18, Cosedge Crescent, Cr0 4dn
Two-storey extension
Approved
Apr 2025
25/00008/HSE
8, Ledbury Road, Cr0 1ep
Two-storey extension
Approved
Jan 2025
24/04114/HSE
8, Ledbury Road, Cr0 1ep
Rear extension
Approved
Jan 2025
24/04115/GPDO
34, Denning Avenue, Cr0 4de
Loft or dormer
Approved
Dec 2024
24/03743/HSE
147, Haling Park Road, Cr2 6nn
Two-storey extension
Refused
Nov 2024
24/03267/HSE
13, Whitgift Avenue, Cr2 6az
Windows, doors or cladding
Approved
Nov 2024
24/03211/HSE
147, Haling Park Road, Cr2 6nn
Rear extension
Approved
Nov 2024
24/03259/GPDO
14, Whitgift Avenue, Cr2 6ay
Rear extension
Approved
Oct 2024
24/03235/GPDO
14, Whitgift Avenue, Cr2 6ay
Outbuilding or garden room
Approved
Nov 2024
24/03236/HSE
53, Church Road, Cr0 1sj
Side return or wrap-around
Approved
Oct 2024
24/02461/HSE
18, Queen Street, Cr0 1sy
Two-storey extension
Approved
Sept 2024
24/02273/HSE
73, Waldronhyrst, Cr2 6nz
Other householder work
Approved
Sept 2024
24/01834/HSE
18, Queen Street, Cr0 1sy
Two-storey extension
Refused
Jun 2024
24/01170/HSE
54, Garden Flat, Heathfield Road, Cr0 1ew
Rear extension
Under consideration
–
23/03424/HSE
42a, Flat, South End, Cr0 1dp
Loft or dormer
Refused
Apr 2024
24/00773/LP
Cotswold, Dering Place, Cr0 1dt
Side extension
Approved
Mar 2024
23/04769/HSE
3, Hillside Road, Cr0 4da
Other householder work
Refused
Jan 2024
23/02970/HSE
127, Edridge Road, Cr0 1ej
Loft or dormer
Refused
Jan 2024
23/04283/HSE
13, Whitgift Avenue, Cr2 6az
Loft or dormer
Approved
Feb 2024
23/04174/HSE
55, Wandle Road, Cr0 1dx
Side return or wrap-around
Approved
Nov 2023
23/03261/HSE
Householder applications validated since 2023 within 600 m. The council's page has the drawings, the decision notice and who the agent or architect was. Hover a row for the description. Source: GLA Planning London Datahub.
100% (5)
88% (122)
88%
8 weeks
Basement
–
74% (57)
83%
8 weeks
Porch or front extension
–
88% (65)
81%
8 weeks
Share of decided applications approved since 2023 (number decided in brackets). Withdrawn applications aren't counted; many are withdrawn when refusal looks likely.