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What you could build at CR0 5AL: 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 Shirley West, Croydon.
● work seen on energy certificates · ● application approved · ● refused · ● pending or other · ● this postcode
| Home | Work | Seen | Space added | Floor area | Rooms | Distance |
|---|---|---|---|---|---|---|
| 14, Roxton Gardens | Extension | 2025 | +12 m² | 129 m² → 141 m² | 6 → 7 | 0 m |
| 28, Roxton Gardens | Extension | 2024 | +36 m² | 135 m² → 171 m² | – | 0 m |
| 39, Boundary Way | Extension | 2024 | +44 m² | 153 m² → 197 m² | – | 225 m |
| 33, Boundary Way | Extension | 2024 | +33 m² | 127 m² → 160 m² | – | 225 m |
| 80, Addington Village Road | Extension | 2023 | +19 m² | 84 m² → 103 m² | – | 197 m |
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.
| Address | Work | Outcome | Decided | Drawings and agent |
|---|---|---|---|---|
| 9, Spout Hill, Cr0 5an | Rear extension | Approved | Sept 2026 | 26/01977/HSE |
| Beechwood, Bridle Way, Cr0 5ah | Side return or wrap-around | Approved | Jul 2026 | 26/00838/HSE |
| Moot Point, Addington Village Road, Cr0 5aq | Two-storey extension | Approved | May 2026 | 25/03912/HSE |
| 18, Roxton Gardens, Cr0 5al | Rear extension | Approved | Nov 2025 | 25/02041/HSE |
| 235, Victory Manor, Shirley Church Road, Cr0 5ab | Rear extension | Approved | Mar 2023 | 23/00301/GPDO |
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.
| Work | Shirley West | Croydon | London | Typical decision time |
|---|---|---|---|---|
| All householder applications | 85% (161) | 82% (3854) | 80% | 8 weeks |
| Loft or dormer | 69% (29) | 73% (712) | 81% | 8 weeks |
| Rear extension | 95% (56) | 88% (1580) | 79% | 7 weeks |
| Two-storey extension | 80% (35) | 79% (621) | 72% | 8 weeks |
| Other householder work | 80% (10) | 59% (263) | 70% | 8 weeks |
| Side return or wrap-around | 100% (5) | 89% (138) | 88% | 8 weeks |
| Windows, doors or cladding | – | 82% (45) | 90% | 8 weeks |
| Outbuilding or garden room | 100% (5) | 84% (111) | 79% | 8 weeks |
| Side extension | 82% (11) | 94% (140) | 86% | 8 weeks |
| Garage conversion or garage |
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 (126,300 resales). How extensions pay off by size, type and region.
Build costs are rough 2026 ranges from industry guides, not quotes. Get three quotes for your plans.
The money you don't get back either way, for the same extra space in Shirley West.
| Stamp duty on the new home | £21,700 |
|---|---|
| Estate agent on yours 1.2% + VAT | £7,776 |
| Solicitors, buying and selling | £3,000 |
| Survey | £600 |
| Removals | £1,500 |
| Money gone | £34,576 |
| Building, plus 15% for design, planning and contingency | £57,500 |
|---|---|
| Less what it adds to your home's value 60% of the local price | −£56,400 |
| Money gone | £1,100 |
On these figures, extending loses about £33,476 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.
Find help: RIBA Find an Architect ↗ · CIAT architectural technologists ↗ · TrustMark tradespeople ↗ · Federation of Master Builders ↗ · Planning Portal guides ↗
General guidance, not planning or legal advice. Fees and rules as checked in October 2026; confirm with the council.
Energy certificates: MHCLG (OGL). Planning applications: GLA Planning London Datahub. Conservation areas and Article 4: planning.data.gov.uk (OGL).
| – |
| 88% (122) |
| 88% |
| 8 weeks |
| Basement | – | 74% (57) | 83% | 8 weeks |
| Porch or front extension | – | 88% (65) | 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.