What you could build at IG2 7QX: 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 Ley Street, Redbridge.
118extensions seen within 600 m in the last 10 years
8loft conversions within 600 m in the last 10 years
92.1extensions 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 Ley Street.
Move to a home 20 m² bigger (about £736,000)
Stamp duty on the new home
£26,800
Estate agent on yours 1.2% + VAT
£8,928
Solicitors, buying and selling
£3,000
Survey
£600
Removals
£1,500
Money gone
£40,828
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
−£69,600
Money gone
−£12,100
On these figures, extending loses about £52,928 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.
1099/26
84, Auckland Road, Ig1 4sf
Rear extension
Not needed / lawful
–
1021/26
270, Thorold Road, Ig1 4hd
Rear extension
Approved
May 2026
0944/26
358, Thorold Road, Ig1 4hf
Rear extension
Refused
May 2026
0593/26
135, Wellesley Road, Ig1 4ln
Rear extension
Under consideration
–
1
19, Westernville Gardens, Ig2 6al
Rear extension
Not needed / lawful
Apr 2026
0793/26
249, Ley Street, Ig1 4bn
Outbuilding or garden room
Approved
Apr 2026
0773/26
1, Mundon Gardens, Ig1 4ah
Side return or wrap-around
Approved
Oct 2025
2418/25
73, Benton Road, Ig1 4as
Loft or dormer
Refused
Sept 2025
1538/25
16, Kings Gardens, Ig1 4aj
Side return or wrap-around
Approved
Sept 2025
2253/25
84, Auckland Road, Ig1 4sf
Rear extension
Refused
Aug 2025
2117/25
208, Balfour Road, Ig1 4ja
Rear extension
Not needed / lawful
Aug 2025
2078/25
119, Wards Road, Ig2 7dz
Side return or wrap-around
Approved
Aug 2025
1833/25
117, Wards Road, Ig2 7dz
Two-storey extension
Approved
Aug 2025
1839/25
159, Balfour Road, Ig1 4hu
Rear extension
Not needed / lawful
Jul 2025
1814/25
256, Balfour Road, Ig1 4hz
Rear extension
Approved
Aug 2025
1852/25
256, Balfour Road, Ig1 4hz
Rear extension
Not needed / lawful
Jul 2025
1683/25
105, Wards Road, Ig2 7dz
Two-storey extension
Approved
Jul 2025
1608/25
105, Wards Road, Ig2 7dz
Rear extension
Approved
Jun 2025
1598/25
164, Balfour Road, Ig1 4jb
Loft or dormer
Withdrawn
Jul 2025
1560/25
7, Kings Gardens, Ig1 4aj
Two-storey extension
Approved
Jun 2025
1384/25
14, Clifton Road, Ig2 7df
Side extension
Approved
Jun 2025
1391/25
126, Auckland Road, Ig1 4sq
Rear extension
Approved
May 2024
0921/24
93, Colombo Road, Ig1 4rh
Rear extension
Approved
Apr 2024
0699/24
22, Benton Road, Ig1 4at
Rear extension
Approved
Feb 2024
0169/24
13, Cranley Road, Ig2 6af
Rear extension
Approved
Feb 2024
0116/24
40, Benton Road, Ig1 4at
Rear extension
Approved
Feb 2024
0002/24
433, Ley Street, Ig1 4ad
Rear extension
Approved
Nov 2023
3080/23
7 Russell Gardens, Ley Street, Ig2 7by
Two-storey extension
Approved
Nov 2023
2904/23
141, Auckland Road, Ig1 4sq
Rear extension
Approved
Aug 2023
2226/23
49, Quebec Road, Ig1 4tu
Rear extension
Approved
Aug 2023
1923/23
70, Cranley Drive, Ig2 6aj
Rear extension
Approved
Jul 2023
1753/23
344, Ley Street, Ig1 4af
Rear extension
Approved
Jun 2023
1504/23
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.
–
75% (8)
88%
7 weeks
Basement
–
80% (5)
83%
10 weeks
Porch or front extension
–
79% (14)
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.