What you could build at SE5 0NW: 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 Burgess Park West & John Ruskin Street, Southwark.
66extensions seen within 600 m in the last 10 years
7loft conversions within 600 m in the last 10 years
86.7extensions 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 Grosvenor Park 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 Burgess Park West & John Ruskin Street.
Move to a home 20 m² bigger (about £572,000)
Stamp duty on the new home
£18,600
Estate agent on yours 1.2% + VAT
£6,408
Solicitors, buying and selling
£3,000
Survey
£600
Removals
£1,500
Money gone
£30,108
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
−£76,200
Money gone
−£18,700
On these figures, extending loses about £48,808 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.
125, Camberwell Road, Se5 0hb
Windows, doors or cladding
Under consideration
–
26/AP/2243
296, Walworth Road, Se17 2te
Other householder work
Refused
Jul 2026
26/AP/1717
89, John Ruskin Street, Se5 0pq
Loft or dormer
Approved
May 2026
26/AP/0930
33, Sutherland Square, Se17 3ee
Rear extension
Approved
Jun 2026
26/AP/0455
140, Olney Road, Se17 3hr
Garage conversion or garage
Approved
Apr 2026
26/AP/0521
28, Westcott Road, Se17 3qy
Loft or dormer
Approved
Feb 2026
25/AP/3765
33, Urlwin Street, Se5 0nf
Side return or wrap-around
Approved
Feb 2026
25/AP/3737
3 Butterworth Terrace, Sutherland Walk, Se17 3ej
Outbuilding or garden room
Refused
Dec 2025
25/AP/2410
4, Rust Square, Se5 7lg
Rear extension
Approved
Jan 2026
25/AP/3219
1, Sutherland Walk, Se17 3ef
Outbuilding or garden room
Approved
Dec 2025
25/AP/2919
56, Lorrimore Road, Se17 3lz
Loft or dormer
Approved
Nov 2025
25/AP/2836
31, Sutherland Square, Se17 3eq
Windows, doors or cladding
Approved
Sept 2025
25/AP/2027
13, Sutherland Square, Se17 3eq
Outbuilding or garden room
Approved
Sept 2025
25/AP/2032
211, John Ruskin Street, Se5 0pt
Rear extension
Approved
Aug 2025
25/AP/1676
211, John Ruskin Street, Se5 0pt
Outbuilding or garden room
Approved
Aug 2025
25/AP/1702
111, John Ruskin Street, Se5 0pq
Loft or dormer
Approved
May 2025
25/AP/1176
5, Lytham Street, Se17 2pn
Rear extension
Approved
Feb 2025
25/AP/0227
51, Fleming Road, Se17 3qr
Side extension
Approved
Mar 2025
24/AP/3771
121, Grosvenor Park, Se5 0nj
Rear extension
Approved
Jan 2025
24/AP/3559
45, Westcott Road, Se17 3qy
Loft or dormer
Approved
Dec 2024
24/AP/3413
97, Lorrimore Road, Se17 3lz
Windows, doors or cladding
Approved
Dec 2024
24/AP/3207
37, Queens Row, Se17 2px
Loft or dormer
Approved
Dec 2024
24/AP/3174
20, Fielding Street, Se17 3hd
Windows, doors or cladding
Approved
Nov 2024
24/AP/2830
105, Olney Road, Se17 3ht
Rear extension
Approved
Sept 2024
24/AP/1998
25, Chapter Road, Se17 3es
Rear extension
Approved
Jul 2024
24/AP/1434
52, Lorrimore Road, Se17 3lz
Windows, doors or cladding
Approved
Jul 2024
24/AP/1313
The Old Rectory Liverpool Grove London Southwark Se17 2hh, Se17 2hh
Windows, doors or cladding
Approved
May 2024
24/AP/0640
68, Lorrimore Road, Se17 3lz
Rear extension
Approved
Jan 2024
23/AP/3076
140, Ark All Saints Academy, Wyndham Road, Se5 0ub
Other householder work
Not needed / lawful
Oct 2023
23/AP/2636
4, Lorrimore Square, Se17 3qt
Windows, doors or cladding
Approved
Feb 2024
23/AP/2561
40, 1, Balmoral Court, Merrow Street, Se17 2nh
Loft or dormer
Approved
Oct 2023
23/AP/2581
96, Lorrimore Road, Se17 3na
Rear extension
Approved
Oct 2023
23/AP/2554
37, Queens Row, Se17 2px
Loft or dormer
Refused
Oct 2023
23/AP/2264
56, Lorrimore Road, Se17 3lz
Side return or wrap-around
Approved
Oct 2023
23/AP/1856
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% (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.