What you could build at UB6 8LD: 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 Perivale, Ealing.
68extensions seen within 600 m in the last 10 years
6loft conversions within 600 m in the last 10 years
75.5extensions 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 Perivale.
Move to a home 20 m² bigger (about £708,000)
Stamp duty on the new home
£25,400
Estate agent on yours 1.2% + VAT
£8,280
Solicitors, buying and selling
£3,000
Survey
£600
Removals
£1,500
Money gone
£38,780
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
−£79,800
Money gone
−£22,300
On these figures, extending loses about £61,080 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.
71, Medway Drive, Ub6 8lw
Rear extension
Refused
Jun 2026
261394HH
15, Periwood Crescent, Ub6 7fl
Rear extension
Approved
May 2026
261185HH
56, Hodder Drive, Ub6 8ll
Rear extension
Refused
Mar 2026
260506PALHE
87, Medway Drive, Ub6 8lw
Rear extension
Approved
Jun 2026
260261HH
56, Hodder Drive, Ub6 8ll
Rear extension
Refused
Feb 2026
260119PALHE
56, Hodder Drive, Ub6 8ll
Rear extension
Refused
Feb 2026
260120PALHE
38, Horsenden Lane South, Ub6 8ad
Other householder work
Approved
Apr 2026
254605HH
28, Medway Drive, Ub6 8lw
Rear extension
Not needed / lawful
Feb 2026
254833PALHE
71, Medway Drive, Ub6 8lw
Loft or dormer
Approved
Jan 2026
254646HH
71, Medway Drive, Ub6 8lw
Rear extension
Not needed / lawful
Dec 2025
254385PALHE
90, Thames Avenue, Ub6 8jn
Rear extension
Approved
Jan 2026
254392HH
5, Sunley Gardens, Ub6 7pf
Rear extension
Approved
Feb 2026
254201HH
6, Hodder Drive, Ub6 8lh
Garage conversion or garage
Approved
Jan 2026
253525HH
87, Medway Drive, Ub6 8lw
Rear extension
Refused
Dec 2025
254144HH
39, Rhyl Road, Ub6 8ld
Loft or dormer
Approved
Dec 2025
253674HH
2, Sunley Gardens, Ub6 7pf
Loft or dormer
Refused
Nov 2025
253172HH
6, Hodder Drive, Ub6 8lh
Rear extension
Not needed / lawful
Sept 2025
252966PALHE
6, Hodder Drive, Ub6 8lh
Rear extension
Refused
Oct 2025
252967HH
32, Scorton Avenue, Ub6 8la
Rear extension
Not needed / lawful
Sept 2025
253097PALHE
230, Conway Crescent, Ub6 8jg
Rear extension
Not needed / lawful
Jun 2025
251932PALHE
2, Sunley Gardens, Ub6 7pf
Rear extension
Not needed / lawful
May 2025
251641PALHE
10, Conway Crescent, Ub6 8hx
Basement
Refused
Jun 2025
251643HH
41, Medway Drive, Ub6 8lw
Other householder work
Approved
Jun 2025
251626HH
153, Conway Crescent, Ub6 8jb
Windows, doors or cladding
Approved
Jun 2025
251415HH
5, Selborne Gardens, Ub6 7pd
Rear extension
Approved
May 2025
250881HH
45, Selborne Gardens, Ub6 7pd
Rear extension
Refused
Apr 2025
250725PALHE
45, Selborne Gardens, Ub6 7pd
Rear extension
Approved
Apr 2025
250630HH
7, Woodhouse Avenue, Ub6 8le
Rear extension
Not needed / lawful
Mar 2025
250502PALHE
32, Conway Crescent, Ub6 8hy
Rear extension
Withdrawn
Sept 2024
243245PALHE
35, Woodhouse Avenue, Ub6 8lg
Loft or dormer
Approved
Aug 2024
242556HH
15, Rockford Avenue, Ub6 8ah
Two-storey extension
Approved
Aug 2024
242483HH
11, Woodhouse Close, Ub6 8lf
Loft or dormer
Approved
Jul 2024
242421HH
46, Colwyn Avenue, Ub6 8jz
Loft or dormer
Approved
Aug 2024
242331HH
25, Ribchester Avenue, Ub6 8tg
Other householder work
Approved
Jul 2024
241955HH
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.