The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical phase, ideal for georgian in Greenwich town centre typical of Greenwich.
Harder than the London average by twelve points. Greenwich approved 70.7% of the householder applications it decided in the three years to March 2026 — 1,627 of 2,301 — against 83.0% across London, while still settling 93.8% inside eight weeks.
| Measure | Greenwich | London |
|---|---|---|
| Householder approval rate | 70.7% | 83.0% |
| Householder decisions made | 2,301 | 77,680 |
| Refused | 674 | — |
| Decided inside eight weeks | 93.8% | — |
| Larger-extension prior approvals granted | 230 | 52.9% of those determined |
| Extension applications in the Datahub | 6,386 | 60% approved |
| Appeals allowed after refusal | 39.7% of 632 | 39.0% of 15,646 |
Sources: decision figures from MHCLG District Planning Application Statistics (PS1 and PS2), twelve quarters to March 2026; the Datahub row from the Planning London Datahub, retrieved 15 August 2026, phrase-matched and comparable within Greenwich only; appeals from Planning Inspectorate casework decided 2016–2026. The twelve-point gap is the strongest argument for getting the drawings right before submission rather than after a refusal.
A house extension drawings package in Greenwich, where the stock is largely Georgian in Greenwich town centre; Victorian terraces in East Greenwich, is the full measured-survey-to-submission drawing set Royal Borough of Greenwich needs in order to determine an application: existing and proposed plans, elevations and sections at 1:100 and 1:50, a location and site plan, and the supporting statements the case officer asks for.
Prepared and reviewed by the chartered technologist team at Architectural Drawings London — MCIAT chartered, £2m PI insured.Last reviewed 2026-08-03.
The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical phase, ideal for georgian in Greenwich town centre typical of Greenwich.
Housing stock in Greenwich: Georgian in Greenwich town centre; Victorian terraces in East Greenwich, Charlton; inter-war semi-detached in Eltham; new-build along the riverside.
Character: World Heritage Site status in Greenwich town centre adds heritage weight; outer borough areas (Eltham, Thamesmead) generally permissive.
Measured existing survey, photographic record, Article 4 and conservation check specific to Greenwich before we quote.
2–3 design options at concept stage — alternative layouts, glazing, roof forms.
Site location plan, existing and proposed plans, elevations, sections, D&AS where required.
Steel beam, foundation, lintel design. Chartered engineer sign-off.
Party Wall notices where needed; Thames Water Build Over Agreement where within 3m of a public sewer.
Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Move the controls for an indicative figure. It anchors your budget — it is not a quote. Every project is priced after a free survey.
Build costs are separate and quoted by your contractor. See our published fees.
Every Greenwich postcode district we draw in, the stock that dominates it and the authority that validates a house extension there. Greenwich fees below are the statutory England rates for 2026, not house extension estimates.
| Postcode | Area | Dominant stock | What it means for a house extension |
|---|---|---|---|
| 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 house extension here, so the SE2 address is checked against both policies maps first. |
| SE3 | Blackheath / Kidbrooke | Georgian villas, Victorian terraces | A house extension in Blackheath / Kidbrooke may land with Greenwich Council or Lewisham Council — SE3 crosses the boundary, and the SE3 policies map decides it street by street. |
| SE7 | Charlton | Victorian villas, 1930s semi-detached | SE7 covers Charlton only; Greenwich Council handles the house extension, and Charlton case officers apply the SE7 conservation-area map. |
| SE9 | Eltham / Mottingham | 1930s semi-detached, post-war flats | Eltham / Mottingham is split at SE9. Either Greenwich Council or Bromley Council can determine a house extension here, so the SE9 address is checked against both policies maps first. |
| SE10 | Greenwich | Georgian terraces, listed buildings | SE10 covers Greenwich only; Greenwich Council handles the house extension, and Greenwich case officers apply the SE10 conservation-area map. |
| SE18 | Woolwich / Plumstead | Georgian fragments, post-war estates, new-build | A house extension at an SE18 address in Woolwich / Plumstead is determined by Greenwich Council under its own Local Plan policies for Woolwich / Plumstead. |
| SE28 | Thamesmead | Post-war estates, new-build | A house extension 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 house extension can achieve at that address.
How designation changes a Greenwich house extension: Greenwich Council maintains 20 conservation areas, including Charlton, Eltham Park, Greenwich Town Centre (World Heritage Site). Inside any of them a Greenwich house extension 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. Blackheath sets the tone for Greenwich casework.
Greenwich permitted development status: there is no borough-wide direction from Greenwich Council, so a house extension at a SE2 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a Greenwich sale to argue it later.
The building fabric around Greenwich: 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. A house extension in Greenwich is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Greenwich Council.
Sources for this Greenwich house extension 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.
Of 632 householder appeals decided in Greenwich over the window covering appeals decided 2016-2026, Greenwich sat close to the London norm, with 39.7% of appeals succeeding against 39.0% city-wide. 251 were allowed and 368 dismissed, with 13 split. Extensions and other alterations to a single home are decided as householder applications, so these 632 cases are the population a refusal in Greenwich joins on appeal - not the far larger number that were simply approved.
Half of those Greenwich appeals took more than 77 days to decide from the day the appeal started — time added on top of the council's own determination period, which is the argument for getting the application right first. 8.4% of them (53 cases) involved a conservation area, so heritage argument carries real weight in Greenwich. 10.6% affected the setting of a listed building. 100.0% were decided by written representations rather than a hearing or inquiry, meaning the written case and the drawings were the whole of the evidence.
632 householder appeals decided in Greenwich. Source: Planning Inspectorate casework, OGL v3.0.
Direct answers to the questions Greenwich homeowners ask every week about house extension drawings.
Start a free quote →Most standard extensions in Greenwich qualify as Permitted Development — single-storey rear up to 3m/4m, side extensions up to half the width of the house, under standard national rules. Flats, listed buildings and conservation areas need full planning permission. We confirm eligibility at the free site survey.
Standard permitted development allows single-storey rear extensions up to 3m (attached house) or 4m (detached) in Greenwich. Larger extensions up to 6m/8m are allowed under Prior Approval (Class AA). Flats, listed buildings and Article 4 areas in Greenwich are excluded from these PD rights.
A Greenwich extension has two cost lines: our architectural package (planning, building regulations and structural calculations in one fixed quote) and the build itself, which contractors price per square metre and which moves with access, ground conditions and specification. A side return typically costs less per m² than a double-storey rear. See our fees.
Greenwich does not have a borough-specific basement policy beyond the national framework — basement conversions are generally permissible subject to structural, drainage and flood-risk considerations. Thames Water Build Over Agreements apply where you're within 3m of a public sewer.
Most Victorian terraces in Greenwich (particularly in Greenwich Town Centre (World Heritage Site)) benefit from both — a side return extension infills the narrow side passage to create a wider kitchen, a rear extension projects back into the garden. A wraparound combines the two. We recommend the best option at the free site visit.
Greenwich's georgian in Greenwich town centre terraced and semi-detached stock typically suits rear single-storey extensions (kitchen-diners), side-return infill extensions, or double-storey rear. Wraparound extensions combine both directions for maximum gain. We recommend the most viable option at the free site visit.
We cover all Greenwich postcodes — SE3, SE7, SE9, SE10, SE18, SE28 — with local surveyors. Survey appointments within 3 working days.
Greenwich Council follows the London Plan and its own Local Development Framework. Extensions must match or complement existing materials, respect neighbour amenity and comply with Part L. We include a Pre-Application Advice summary where the planning history is complex.
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