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Planning guide · Richmond upon Thames

Permitted development in Richmond upon Thames

Single-storey rear extensions, lofts and side extensions you can build in Richmond upon Thames without full planning — and the exceptions.

Quick answer

Borough
Richmond upon Thames
Planning authority
Richmond Council
Conservation areas
72
Statutory determination
8 weeks
Our approval rate
98% first time

Architectural planning drawings for a London project — planning drawings in Richmond Upon Thames

Does permitted development survive in Richmond upon Thames?

Only outside the designations, and there are more of those here than anywhere: 85 conservation areas covering about 3,172 hectares. Where rights do survive, the borough is receptive — it granted 211 larger-extension prior approvals, a 73.0% rate on determined cases.

MeasureRichmond upon ThamesLondon
Conservation areas (national register)85 covering 3,172 ha1,141
Larger-extension prior approvals granted21173.0% of those determined
Lawful development certificates issued1,323
Householder approval rate80.2%83.0%
Decisions made under delegated powers99.1%97.0%
Householder appeals allowed after refusal43.8% of 66740.8% of 13,067

Sources: conservation areas from planning.data.gov.uk, retrieved 1 September 2026, hectares computed from the published boundaries; decision figures from MHCLG PS1 and PS2, twelve quarters to March 2026; appeals from Planning Inspectorate casework decided 2016–2026. Inside a conservation area Article 2(3) removes Class A side extensions, cladding and Class B roof enlargement entirely, so the designation check settles most Richmond questions before the dimensions are reached.

In detail

Answers for Richmond upon Thames

What can I build under PD in Richmond upon Thames without planning?

Single-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.

Does Permitted Development apply to flats in Richmond upon Thames?

No. Permitted Development rights apply only to houses (Class C3 dwellings). Flats and maisonettes require full planning for almost every external alteration.

Are PD rights different in a conservation area?

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.

What is a Lawful Development Certificate?

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.

Do I need building regulations even under PD?

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.

Related guides for Richmond upon Thames
An architectural technologist checking a printed set of house drawings, marking a proposed elevation in red — permitted development in Richmond upon Thames
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Which postcode districts around Richmond upon Thames do we cover for permitted development scheme work?

Every Richmond upon Thames postcode district we draw in, the stock that dominates it and the authority that validates a permitted development scheme there. Richmond upon Thames fees below are the statutory England rates for 2026, not permitted development scheme estimates.

PostcodeAreaDominant stockWhat it means for a permitted development scheme
SW13BarnesGeorgian villas, Edwardian terracesA permitted development scheme at an SW13 address in Barnes is determined by Richmond Council under its own Local Plan policies for Barnes.
SW14Mortlake / East SheenEdwardian villas, 1930s semi-detachedSW14 covers Mortlake / East Sheen only; Richmond Council handles the permitted development scheme.
TW1TwickenhamGeorgian fragments, Victorian terraces, Edwardian villasTW1 covers Twickenham only; Richmond Council handles the permitted development scheme.
TW2Twickenham / WhittonGeorgian fragments, Victorian terraces, Edwardian villasTW2 covers Twickenham / Whitton only; Richmond Council handles the permitted development scheme.
TW9Richmond / KewGeorgian terraces, Victorian villasTW9 covers Richmond / Kew only; Richmond Council handles the permitted development scheme.
TW10Richmond / HamGeorgian terraces, Victorian villasRichmond / Ham sits wholly inside TW10, so Richmond Council validates every permitted development scheme submitted from an TW10 address.
TW11TeddingtonEdwardian villas, Victorian terracesTW11 covers Teddington only; Richmond Council handles the permitted development scheme.
TW12Hampton / Hampton HillGeorgian villas, Edwardian terraces, 1930s semi-detachedHampton / Hampton Hill sits wholly inside TW12, so Richmond Council validates every permitted development scheme submitted from an TW12 address.

What changes about a permitted development scheme in each part of Richmond upon Thames?

Roof pitch, wall build-up and plot depth change every few Richmond upon Thames streets, and each one changes what a permitted development scheme can achieve at that address.

How do conservation areas and Article 4 affect a permitted development scheme in Richmond upon Thames?

Richmond upon Thames conservation designations: there are 72 on Richmond Council’s own list, Kew Green, Hampton Wick, Twickenham Riverside among them. Designation costs a Richmond upon Thames owner the permitted-development route: a permitted development scheme then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Barnes Village is the Richmond upon Thames designation that most often changes a permitted development scheme design.

Richmond upon Thames permitted development status: there is no borough-wide direction from Richmond Council, so a permitted development scheme at a SW13 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a Richmond upon Thames sale to argue it later.

What Richmond upon Thames is built from: Georgian in Richmond Green and Twickenham; Edwardian villas in Barnes and East Sheen; 1930s semi-detached in Whitton; riverside cottages along the Thames. Highest conservation area coverage in London; Royal Parks and Thames corridor add heritage layers; design quality heavily scrutinised. That mix decides the permitted development scheme route in Richmond upon Thames more than the postcode does.

Which neighbouring authorities border Richmond upon Thames?

Sources for this Richmond upon Thames 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.

Permitted development in Richmond upon Thames — a London terraced street of the type we survey
A london terraced street of the type we survey — permitted development in Richmond upon Thames.

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