What you could build at UB2 4HQ: 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 Norwood Green South, Ealing.
45extensions seen within 600 m in the last 10 years
6loft conversions within 600 m in the last 10 years
93.3extensions 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 Norwood Green South.
Move to a home 20 m² bigger (about £621,000)
Stamp duty on the new home
£21,050
Estate agent on yours 1.2% + VAT
£7,704
Solicitors, buying and selling
£3,000
Survey
£600
Removals
£1,500
Money gone
£33,854
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
−£51,600
Money gone
£5,900
On these figures, extending loses about £27,954 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.
53, Havelock Road, Ub2 4ny
Rear extension
Approved
Aug 2026
262468HH
27, Hunt Road, Ub2 4pz
Rear extension
Not needed / lawful
Jul 2026
262457PALHE
25, Hunt Road, Ub2 4pz
Rear extension
Not needed / lawful
Jul 2026
262463PALHE
23, Marlow Road, Ub2 4ns
Rear extension
Not needed / lawful
Jul 2026
262381PALHE
25, Thorncliffe Road, Ub2 5rj
Loft or dormer
Under consideration
–
262430HH
73, Havelock Road, Ub2 4pb
Rear extension
Approved
Aug 2026
262295HH
4, Marlow Road, Ub2 4ns
Rear extension
Refused
Jul 2026
262117PALHE
57, Minterne Avenue, Ub2 4hp
Rear extension
Not needed / lawful
Jun 2026
262183PALHE
3, Marlow Road, Ub2 4ns
Rear extension
Refused
Jul 2026
262088PALHE
36, Minterne Avenue, Ub2 4hp
Loft or dormer
Under consideration
–
262062HH
46, Minterne Avenue, Ub2 4hp
Rear extension
Not needed / lawful
Jun 2026
262037PALHE
11, Sherborne Avenue, Ub2 4hu
Loft or dormer
Approved
Jul 2026
261968HH
46, Shaftesbury Avenue, Ub2 4hj
Rear extension
Approved
Jun 2026
261839PALHE
8, Stour Avenue, Ub2 4hl
Loft or dormer
Approved
Jul 2026
262087HH
23, Marlow Road, Ub2 4ns
Rear extension
Refused
Jun 2026
261823PALHE
6, Shaftesbury Avenue, Ub2 4hq
Rear extension
Approved
Jun 2026
261218HH
19, Hunt Road, Ub2 4pz
Rear extension
Approved
Jun 2026
261501HH
162, Norwood Road, Ub2 4js
Other householder work
Refused
Jun 2026
261358HH
25, Thorncliffe Road, Ub2 5rj
Rear extension
Not needed / lawful
May 2026
261360PALHE
18, Dorset Avenue, Ub2 4hf
Rear extension
Not needed / lawful
Apr 2026
261244PALHE
36, Minterne Avenue, Ub2 4hp
Loft or dormer
Refused
May 2026
260128HH
46, Shaftesbury Avenue, Ub2 4hj
Rear extension
Refused
Apr 2026
260742PALHE
16, Gregory Road, Ub2 4pp
Rear extension
Approved
Apr 2026
260779HH
3, Minterne Avenue, Ub2 4hn
Side return or wrap-around
Approved
Jun 2026
260491HH
11, Sherborne Avenue, Ub2 4hu
Loft or dormer
Approved
Mar 2026
260210HH
3, Minterne Avenue, Ub2 4hn
Side return or wrap-around
Refused
Jan 2026
254264HH
23, Marlow Road, Ub2 4ns
Rear extension
Refused
Dec 2025
254377PALHE
24, Thorncliffe Road, Ub2 5rg
Two-storey extension
Approved
Dec 2025
253736HH
34, Marlow Road, Ub2 4ns
Rear extension
Not needed / lawful
Oct 2025
253542PALHE
7, Sherborne Avenue, Ub2 4hu
Loft or dormer
Approved
Jan 2026
253528HH
20, Minterne Avenue, Ub2 4hw
Loft or dormer
Approved
Dec 2025
253522HH
41, Craneswater Park, Ub2 5rw
Loft or dormer
Refused
Oct 2025
253225HH
36, Minterne Avenue, Ub2 4hp
Rear extension
Not needed / lawful
Sept 2025
253153PALHE
36, Minterne Avenue, Ub2 4hp
Outbuilding or garden room
Approved
Oct 2025
253183HH
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.