SE28 · Thamesmead
SE28 is Thamesmead — later twentieth-century stock and estate layouts in Greenwich (with a Bexley edge), different from the Victorian terrace belts further west. Many houses still use householder permitted development where rights are intact; flats do not. Flood risk and riverside policy can matter as much as conservation designation here.
Location data: postcodes.io · Constraints: planning.data.gov.uk (borough-level) · Open Government Licence
Constraint context · Greenwich
Real · planning.data.gov.ukGreenwich has 14 designated conservation areas and 0 Article 4 areas. A district is too coarse to say which apply to your house — postcode districts span many streets and SE28 crosses 2 boroughs. Enter a full postcode below for the point-level check, or read the full borough picture on the Greenwich planning guide.
Is SE28 in a conservation area?
No conservation-area geometry from the official dataset falls within 1km of the centre of SE28. That is not a guarantee for your own address — designations are drawn street by street, and the national dataset's coverage varies by borough. Check the exact address before you rely on permitted development.
Does an Article 4 direction apply in SE28?
The national dataset holds no Article 4 geometry within 1km of the centre of SE28. Treat that as unknown, not as “none”. The national dataset is known to omit property-specific directions, so the only safe answer is to verify on the council's own register for Greenwich before assuming a permitted-development right still exists.
Every designation in the borough: Greenwich planning guide →
Do you need planning permission in SE28?
Three routes exist, and which one you are on is decided by your address, not your postcode district:
| Permitted development — no application. The work stays inside the GPDO limits and no designation removes them. A Lawful Development Certificate is cheap proof for a future buyer. | No permission |
| Prior approval — the larger single-storey rear extension route, with neighbour consultation. Not available on designated land. | 42 days |
| Full householder application — required once a designation removes your permitted-development right, or the scheme exceeds the limits. | 8 weeks |
No conservation-area or Article 4 geometry from the national dataset falls near the centre of SE28, which makes the permitted-development route more likely here than in designated parts of London — but the dataset omits some property-specific directions, so confirm at your own address before relying on it.
What does planning permission cost in SE28?
| Householder planning application | £548 (from 1 April 2026) |
| Lawful Development Certificate — proposed works | £274 (half the application fee) |
| Lawful Development Certificate — existing works | £548 (the full application fee) |
| Listed building consent | No fee |
| Resubmission after a refusal | Free once, within 12 months of the decision |
National statutory figures for England — councils do not set them, so they are the same in every borough. Planning fees re-index every 1 April; confirm the current amount on the Planning Portal fee calculator before you apply. These are the council's fees only — drawings, surveys and any specialist reports are separate.
How long does it take?
| Householder application — statutory target | 8 weeks |
| Householder application — in practice | 8–12 weeks |
| Prior approval (larger home extension) | 42 days |
| Lawful Development Certificate | 8 weeks |
| Householder appeal — deadline to lodge | 12 weeks from the decision date |
| Householder appeal — typical decision | Around 18 weeks |
What if it's refused?
A refusal is a decision notice with reasons attached, and those reasons are a roadmap. Most homeowners in Greenwich — as anywhere in England — are better served by amending the scheme and using the free resubmission than by appealing: you get one further application on the same site within 12 months without paying again.
| Who can appeal | The applicant only — not neighbours |
| Fee to appeal | None — you bear your own costs |
| Procedure | Written representations for most householder appeals |
| Success rate | Roughly a third — about 36% of householder appeals allowed in 2025/26 |
Appeals go to the Planning Inspectorate, an independent national body. How to read a refusal and choose your route →
Planning permission by project in Greenwich
Charlton, Eltham and Plumstead terraces extend under PD; the Greenwich, Blackheath and Westcombe Park conservation areas need a full application.
Rear extension in Greenwich →Workable on the Victorian terraces of Greenwich, Charlton and the Lewisham-border streets; conservation designation decides PD versus a full application.
Side return extension in Greenwich →Routine on the terraces and semis of Charlton, Eltham and Plumstead under PD; the conservation areas scrutinise dormers.
Loft conversion in Greenwich →Covered by the Residential Extensions, Basements and Conversions SPD; expect a full application with structural and, near the river, flood-risk evidence.
Basement extension in Greenwich →Generous gardens in Eltham, Charlton and Blackheath suit garden rooms under PD; conservation-area designation and height and incidental-use limits are the constraints.
Garden room in Greenwich →Pinpoint your street
More of Greenwich
Maritime World Heritage core, Blackheath and Westcombe Park; named conservation-area Article 4s.
Borough page →Planning Permission Checker provides planning and cost intelligence for early feasibility only. It is not legal, planning, valuation, architectural, structural, or surveying advice. All estimates are indicative and must be verified by qualified professionals before purchase, design, planning submission, or construction.
Cost estimates are indicative only — not a quotation. Final price depends on survey, specification, structure, access, party wall matters, VAT, professional fees, and contractor availability.
Planning outcomes are not guaranteed. Local planning authorities make final decisions.