What you could build at SE5 8DH: 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 Camberwell South, Southwark.
188extensions seen within 600 m in the last 10 years
22loft conversions within 600 m in the last 10 years
128.2extensions 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
Houses usually have permitted development rights: some rear extensions (typically up to 3 m deep for a semi or terrace, 4 m detached), loft conversions within volume limits, and porches can go ahead without planning permission. Larger single-storey rear extensions (up to 6 m / 8 m) can use the “prior approval” neighbour scheme.
Not in a conservation area (from council registers).
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 Camberwell South.
Move to a home 20 m² bigger (about £919,000)
Stamp duty on the new home
£35,950
Estate agent on yours 1.2% + VAT
£10,728
Solicitors, buying and selling
£3,000
Survey
£600
Removals
£1,500
Money gone
£51,778
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
−£104,400
Money gone
−£46,900
On these figures, extending loses about £98,678 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.
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26/AP/2681
90, Shenley Road, Se5 8nq
Other householder work
Under consideration
–
26/AP/2581
76, Shenley Road, Se5 8nq
Loft or dormer
Under consideration
–
26/AP/2545
7, Soames Street, Se15 4bz
Side return or wrap-around
Under consideration
–
26/AP/2607
138, Oglander Road, Se15 4db
Other householder work
Under consideration
–
26/AP/2440
83, Talfourd Road, Se15 5nn
Other householder work
Approved
Sept 2026
26/AP/2340
1, Maldon Close, Se5 8dd
Outbuilding or garden room
Approved
Sept 2026
26/AP/2270
190, Choumert Road, Se15 4ab
Other householder work
Refused
Sept 2026
26/AP/2071
107, Choumert Road, Se15 4ap
Rear extension
Approved
Sept 2026
26/AP/2056
81, Grove Hill Road, Se5 8df
Rear extension
Approved
Aug 2026
26/AP/1789
63, Vestry Road, Se5 8pg
Loft or dormer
Approved
Aug 2026
26/AP/1702
155, Chadwick Road, Se15 4py
Two-storey extension
Approved
Sept 2026
26/AP/1744
250, Bellenden Road, Se15 4by
Side extension
Approved
Aug 2026
26/AP/1809
65, Grove Hill Road, Se5 8df
Other householder work
Withdrawn
Aug 2026
26/AP/1785
84, Lyndhurst Way, Se15 5ap
Loft or dormer
Approved
Oct 2026
26/AP/1619
83, Crofton Road, Se5 8lz
Basement
Refused
Jul 2026
26/AP/1308
95, Lyndhurst Grove, Se15 5aw
Loft or dormer
Approved
Jul 2026
26/AP/1531
2, Denman Road, Se15 5np
Outbuilding or garden room
Approved
Jul 2026
26/AP/1423
2, Pelham Close, Se5 8lw
Windows, doors or cladding
Approved
Jul 2026
26/AP/1494
11, Wingfield Street, Se15 4ln
Loft or dormer
Approved
Jul 2026
26/AP/1454
70, Linnell Road, Se5 8nj
Side return or wrap-around
Approved
Jul 2026
26/AP/1318
27, Oswyth Road, Se5 8nh
Side return or wrap-around
Approved
Jul 2026
26/AP/1415
31, Muschamp Road, Se15 4eg
Loft or dormer
Approved
Jul 2026
26/AP/1389
52, Maxted Road, Se15 4lf
Loft or dormer
Approved
Jun 2026
26/AP/1310
41, Blenheim Grove, Se15 4qs
Loft or dormer
Approved
Jul 2026
26/AP/1324
8, Marsden Road, Se15 4ee
Loft or dormer
Approved
Jul 2026
26/AP/1199
5, Marsden Road, Se15 4ee
Rear extension
Approved
May 2026
26/AP/1055
97, Grove Park, Se5 8le
Loft or dormer
Approved
Jul 2026
26/AP/1050
59, Ondine Road, Se15 4ea
Side return or wrap-around
Approved
May 2026
26/AP/1033
69, Lyndhurst Grove, Se15 5aw
Side extension
Approved
May 2026
26/AP/1004
48, Maxted Road, Se15 4lf
Loft or dormer
Approved
Jun 2026
26/AP/0914
60, Grove Park, Se5 8lf
Loft or dormer
Approved
Aug 2026
26/AP/0784
25, St Francis Road, Se22 8de
Loft or dormer
Approved
Jun 2026
26/AP/0898
175, Bellenden Road, Se15 4dg
Loft or dormer
Approved
May 2026
26/AP/0875
2, Denman Road, Se15 5np
Rear extension
Approved
Apr 2026
26/AP/0754
26, Adys Road, Se15 4dz
Loft or dormer
Approved
Apr 2026
26/AP/0612
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.
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100% (47)
88%
7 weeks
Basement
–
96% (47)
83%
8 weeks
Porch or front extension
–
100% (19)
81%
7 weeks
Share of decided applications approved since 2023 (number decided in brackets). Withdrawn applications aren't counted; many are withdrawn when refusal looks likely.