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Planning guide · Kingston upon Thames

Kingston Old Town, Surbiton and 20 more protected areas

Kingston upon Thames has 22 conservation areas. What changes inside them, how Heritage Statements work, and which alterations still qualify.

Quick answer

Borough
Kingston upon Thames
Planning authority
Kingston Council
Conservation areas
22
Statutory determination
8 weeks
Our approval rate
98% first time

London period house exterior with architectural character — planning drawings in Kingston Upon Thames

What is protected in Kingston upon Thames besides buildings?

Trees, on a scale no other borough matches. Kingston carries 7,145 tree preservation zones in the national register, alongside 114 Article 4 areas and 28 conservation areas covering 349 hectares. Southborough is the largest at 50 hectares. It holds 867 listed buildings.

MeasureKingston upon ThamesLondon
Conservation areas281,141
Designated area349 ha
Tree preservation zones7,145
Article 4 areas114
Listed buildings867
Extension of time agreed15.6%34.5%

Sources: conservation area counts and boundaries from the planning.data.gov.uk register, retrieved 1 September 2026, with hectares computed from the published boundaries. Article 4, tree preservation and listed building counts from the planning.data.gov.uk designation registers; a count of zero there means the register has no entry for that borough, never that none exist. Decision figures from MHCLG PS1 and PS2, twelve quarters to March 2026. Open Government Licence v3.0.

Why does the Kingston upon Thames map show more Article 4 than conservation area?

Two different sets of lines appear on the map here, and the difference between them is the point. One set is the borough’s 28 conservation areas. The other is its Article 4 areas, of which the register holds 113 — four times as many, cut far more finely. Both come from national data and the postcode search runs on your device. Being simplified shapes, they will place you on one side of a boundary or the other but will not survey where that boundary actually falls.

That imbalance is the practical story in Kingston. Conservation area designation covers about 349.1 hectares, with Southborough the largest single area at 49.8 hectares and Oakhill recorded in more than one piece, the smaller running to 0.8. Article 4 coverage, by contrast, is granular enough that a Kingston address can sit under a direction while falling outside every conservation area shown — which is the usual reason a householder here is told a rear extension or a new rooflight needs consent when someone two streets away did the same work without one. The register carries no designation dates for the borough and no linked appraisal documents against any of the 28 areas, so use the map as a locator and go to the council for the written character assessment. If your postcode lights up an Article 4 polygon and nothing else, permitted development is still the wrong assumption to start from.

Layer sources: conservation areas and article-4 direction areas, both taken from planning.data.gov.uk, retrieval date 15 August 2026, checked again on 1 September 2026. Contains public sector information licensed under the Open Government Licence v3.0

In detail

Answers for Kingston upon Thames

How many conservation areas does Kingston upon Thames have?

Kingston upon Thames has 22 designated conservation areas, including Kingston Old Town, Surbiton, Hampton Wick, Coombe Hill.

What changes need planning in a Kingston upon Thames conservation area?

Any external alteration visible from a public space typically requires full planning permission inside a conservation area: roof additions, dormers, replacement windows, rendering, hardstanding, and demolition. Internal works generally do not, unless the property is also listed.

Do I need a Heritage Statement in Kingston upon Thames?

Yes — every application inside a conservation area requires a Heritage Statement. It must address the conservation area character appraisal, identify heritage assets, and explain how the design preserves or enhances character. We prepare this as part of every conservation-area application.

Can I have a roof extension or mansard in a Kingston upon Thames conservation area?

Rear mansards and dormers are routinely approved in many London conservation areas where the design matches the terrace's existing roofscape — particularly in Hackney, Islington, Tower Hamlets, Lambeth and Southwark. Front-facing dormers are almost universally refused.

How long does conservation area approval take in Kingston upon Thames?

Kingston Council statutory determination is 8 weeks for householder applications. Conservation officer consultation adds 2–3 weeks in practice. Expect 11–14 weeks from validation to decision.

Related guides for Kingston upon Thames
Conservation area planning in Kingston upon Thames — a London terraced street of the type we survey
A london terraced street of the type we survey — conservation area planning in Kingston upon Thames.
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Where in Kingston upon Thames does a conservation area application actually get determined?

Every Kingston upon Thames postcode district we draw in, the stock that dominates it and the authority that validates a conservation area application there. Kingston upon Thames fees below are the statutory England rates for 2026, not conservation area application estimates.

PostcodeAreaDominant stockWhat it means for a conservation area application
KT1Kingston upon ThamesGeorgian fragments, Victorian terraces, 1930s semi-detachedKT1 covers Kingston upon Thames only; Kingston Council handles the conservation area application.
KT2Kingston / NorbitonGeorgian fragments, Victorian terraces, 1930s semi-detachedKingston / Norbiton sits wholly inside KT2, so Kingston Council validates every conservation area application submitted from an KT2 address.
KT3New MaldenEdwardian villas, 1930s semi-detachedNew Malden sits wholly inside KT3, so Kingston Council validates every conservation area application submitted from an KT3 address.
KT5Surbiton / TolworthEdwardian villas, mansion blocksA conservation area application at an KT5 address in Surbiton / Tolworth is determined by Kingston Council under its own Local Plan policies for Surbiton / Tolworth.
KT6SurbitonEdwardian villas, mansion blocksKT6 covers Surbiton only; Kingston Council handles the conservation area application.
KT9Chessington1930s semi-detachedA conservation area application at an KT9 address in Chessington is determined by Kingston Council under its own Local Plan policies for Chessington.

How does a conservation area application differ street by street across Kingston upon Thames?

Roof pitch, wall build-up and plot depth change every few Kingston upon Thames streets, and each one changes what a conservation area application can achieve at that address.

Does Kingston upon Thames planning policy restrict a conservation area application?

Conservation areas covering Kingston upon Thames: Kingston Council runs 22, and Surbiton, Hampton Wick, Coombe Hill are the ones Kingston upon Thames owners meet most. A conservation area application inside a Kingston upon Thames conservation area loses permitted development, so the Kingston upon Thames submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Surbiton a conservation area application is judged on the street elevation first.

Article 4 and your Kingston upon Thames conservation area application: Kingston Council has made no borough-wide direction, so permitted development for a conservation area application in Kingston upon Thames generally survives outside Kingston upon Thames conservation areas and listed curtilages. A Lawful Development Certificate at £274 is how a KT1 owner records that a conservation area application was lawful.

Kingston upon Thames housing stock: Edwardian villas in Surbiton and New Malden; Victorian terraces in Kingston central; 1930s semi-detached in Chessington and Tolworth; post-war in New Malden. Outer south-west London suburban; generally permissive; riverside conservation areas add character in Kingston town. Read that before choosing a conservation area application route in Kingston upon Thames — construction, not postcode, sets what is achievable.

Who decides a conservation area application on the edge of Kingston upon Thames?

Sources for this Kingston upon Thames conservation area application 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.

A printed planning application drawing set — proposed elevations, floor plans and the os location plan with the site outlined in red — conservation area planning in Kingston upon Thames
The planning set that goes to the council through the Planning Portal: proposed elevations, plans, and the OS location plan with your site outlined.

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