Single-storey rear extensions, lofts and side extensions you can build in Greenwich without full planning — and the exceptions.
Better than average. Greenwich granted 230 larger home extension notifications against 205 refusals, a 52.9% grant rate where London manages 34.6%. Its return records no prior-approval-not-required decisions, which means not recorded rather than none. It issued 1,228 lawful development certificates.
| Larger home extension route | Greenwich | London |
|---|---|---|
| Granted | 230 | 1,930 |
| Refused | 205 | 3,646 |
| Grant rate | 52.9% | 34.6% |
| Prior approval not required | not recorded | 9,067 |
| Lawful development certificates | 1,228 | 36,657 |
| Householder approval | 70.7% | 83.0% |
Sources: MHCLG District Planning Application Statistics (PS1 and PS2), twelve quarters to March 2026. A zero in this return means the measure was not recorded for that borough, never that no such decisions exist. Open Government Licence v3.0.
In detailSingle-storey rear extension up to 3m deep (attached house) or 4m (detached); side extension up to half the original width; loft conversion up to 40m³ (terraced) or 50m³ (semi-detached); single-storey outbuilding within the curtilage; replacement windows and doors. All subject to material match, eaves setback (20cm), and not facing a highway.
No. Permitted Development rights apply only to houses (Class C3 dwellings). Flats and maisonettes require full planning for almost every external alteration.
Yes — significantly reduced. In a conservation area: side extensions and two-storey rear extensions are not PD; cladding is not PD; chimney removal needs planning; roof additions are restricted.
An LDC is a formal confirmation from the council that your proposal is lawful PD — recommended before building, useful when selling. Costs around £103 for council fees + drawings.
Yes. Building regulations are entirely separate from planning. Permitted Development removes the planning requirement only — you still need building control sign-off for structure, insulation, fire safety, drainage, and ventilation. We deliver both planning and building regs drawings.



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Every Greenwich postcode district we draw in, the stock that dominates it and the authority that validates a permitted development scheme there. Greenwich fees below are the statutory England rates for 2026, not permitted development scheme estimates.
| Postcode | Area | Dominant stock | What it means for a permitted development scheme |
|---|---|---|---|
| SE2 | Abbey Wood | Georgian in Greenwich town centre; Victorian terraces in East Greenwich | Abbey Wood is split at SE2. Either Greenwich Council or Bexley Council can determine a permitted development scheme here, so the SE2 address is checked against both policies maps first. |
| SE3 | Blackheath / Kidbrooke | Georgian villas, Victorian terraces | SE3 straddles a boundary: Blackheath / Kidbrooke addresses fall to Greenwich Council or Lewisham Council, so confirm which authority validates the permitted development scheme before submitting SE3 drawings. |
| SE7 | Charlton | Victorian villas, 1930s semi-detached | SE7 covers Charlton only; Greenwich Council handles the permitted development scheme. |
| SE9 | Eltham / Mottingham | 1930s semi-detached, post-war flats | Eltham / Mottingham is split at SE9. Either Greenwich Council or Bromley Council can determine a permitted development scheme here, so the SE9 address is checked against both policies maps first. |
| SE10 | Greenwich | Georgian terraces, listed buildings | A permitted development scheme at an SE10 address in Greenwich is determined by Greenwich Council under its own Local Plan policies for Greenwich. |
| SE18 | Woolwich / Plumstead | Georgian fragments, post-war estates, new-build | SE18 covers Woolwich / Plumstead only; Greenwich Council handles the permitted development scheme. |
| SE28 | Thamesmead | Post-war estates, new-build | A permitted development scheme at an SE28 address in Thamesmead is determined by Greenwich Council under its own Local Plan policies for Thamesmead. |
Roof pitch, wall build-up and plot depth change every few Greenwich streets, and each one changes what a permitted development scheme can achieve at that address.
How designation changes a Greenwich permitted development scheme: Greenwich Council maintains 20 conservation areas, including Greenwich Town Centre (World Heritage Site), Blackheath, Charlton. Inside any of them a Greenwich permitted development scheme cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Greenwich Town Centre (World Heritage Site) sets the tone for Greenwich casework.
No blanket Article 4 over Greenwich: Greenwich Council has not withdrawn permitted development across Greenwich, so a permitted development scheme outside a Greenwich conservation area usually keeps it. The £274 Lawful Development Certificate is still the document a SE2 owner wants on file.
Greenwich housing stock: Georgian in Greenwich town centre; Victorian terraces in East Greenwich, Charlton; inter-war semi-detached in Eltham; new-build along the riverside. World Heritage Site status in Greenwich town centre adds heritage weight; outer borough areas (Eltham, Thamesmead) generally permissive. Read that before choosing a permitted development scheme route in Greenwich — construction, not postcode, sets what is achievable.
Sources for this Greenwich permitted development scheme page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.

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