What you could build at W13 0SP: 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 West Ealing, Ealing.
177extensions seen within 600 m in the last 10 years
23loft conversions within 600 m in the last 10 years
94.7extensions 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
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 West Ealing.
Move to a home 20 m² bigger (about £906,000)
Stamp duty on the new home
£35,300
Estate agent on yours 1.2% + VAT
£10,944
Solicitors, buying and selling
£3,000
Survey
£600
Removals
£1,500
Money gone
£51,344
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
−£87,600
Money gone
−£30,100
On these figures, extending loses about £81,444 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.
28, Lavington Road, W13 9nw
Loft or dormer
Approved
Jul 2026
261742HH
5, Bonchurch Road, W13 9je
Rear extension
Approved
Jun 2026
261661HH
45b, Manor Road, W13 0ja
Other householder work
Withdrawn
Jun 2026
261441HH
2, Rathgar Avenue, W13 9pl
Side extension
Under consideration
–
261423HH
51, Alexandria Road, W13 0nr
Loft or dormer
Approved
May 2026
261192HH
29, Loveday Road, W13 9jt
Rear extension
Refused
Apr 2026
261201PALHE
13, Denmark Road, W13 8rq
Two-storey extension
Approved
Jun 2026
261161HH
79, The Avenue, W13 8js
Loft or dormer
Approved
Jun 2026
261136HH
8, Felix Road, W13 0nt
Two-storey extension
Approved
Apr 2026
260515HH
34, Regina Road, W13 9ef
Two-storey extension
Approved
Apr 2026
260348HH
21, Eccleston Road, W13 0ra
Rear extension
Approved
Apr 2026
260122HH
99, Westfield Road, W13 9jd
Rear extension
Approved
Mar 2026
260081HH
25, Broomfield Road, W13 9ap
Other householder work
Approved
Mar 2026
260067HH
33, St James Avenue, W13 9dl
Side extension
Approved
Feb 2026
260046HH
29, Loveday Road, W13 9jt
Side return or wrap-around
Approved
Feb 2026
254842HH
53, Mattock Lane, W13 9la
Windows, doors or cladding
Approved
Feb 2026
254750HH
1, Loveday Road, W13 9jt
Rear extension
Approved
Jan 2026
254395HH
32, Alexandria Road, W13 0nr
Loft or dormer
Approved
Feb 2026
254580HH
44, Westfield Road, W13 9jh
Rear extension
Approved
Jan 2026
254482HH
40, Seaford Road, W13 9ht
Side return or wrap-around
Approved
Jan 2026
254488HH
38, Endsleigh Road, W13 0re
Rear extension
Approved
Jan 2026
254380HH
52, Argyle Road, W13 8aa
Other householder work
Approved
Feb 2026
253650HH
64, Drayton Gardens, W13 0lq
Rear extension
Approved
Nov 2025
253721HH
9, Lavington Road, W13 9nn
Rear extension
Approved
Nov 2025
253624HH
60, Argyle Road, W13 8aa
Loft or dormer
Approved
Jan 2026
253489HH
30, Mattock Lane, W5 5bh
Loft or dormer
Refused
Nov 2025
253402HH
21, Regina Terrace, W13 9hy
Loft or dormer
Approved
Oct 2025
253019HH
99, Westfield Road, W13 9jd
Rear extension
Refused
Sept 2025
253168PALHE
39, Alexandria Road, W13 0nr
Outbuilding or garden room
Other
Sept 2025
252670PACBSD
53, Mattock Lane, W13 9la
Other householder work
Approved
Oct 2025
252738HH
20, Coldershaw Road, W13 9dx
Loft or dormer
Approved
Nov 2025
252599HH
56, Westfield Road, W13 9jh
Rear extension
Approved
Aug 2025
252276HH
15, Sutherland Road, W13 0dx
Rear extension
Approved
Jul 2025
251822HH
19, Craven Avenue, W5 2sy
Rear extension
Approved
Jun 2025
251326HH
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.
–
88% (76)
88%
8 weeks
Basement
–
81% (52)
83%
10 weeks
Porch or front extension
–
80% (64)
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.