Kingston upon Thames has 22 conservation areas. What changes inside them, how Heritage Statements work, and which alterations still qualify.
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.
| Measure | Kingston upon Thames | London |
|---|---|---|
| Conservation areas | 28 | 1,141 |
| Designated area | 349 ha | — |
| Tree preservation zones | 7,145 | — |
| Article 4 areas | 114 | — |
| Listed buildings | 867 | — |
| Extension of time agreed | 15.6% | 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.
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 detailKingston upon Thames has 22 designated conservation areas, including Kingston Old Town, Surbiton, Hampton Wick, Coombe Hill.
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.
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.
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.
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.



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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.
| Postcode | Area | Dominant stock | What it means for a conservation area application |
|---|---|---|---|
| KT1 | Kingston upon Thames | Georgian fragments, Victorian terraces, 1930s semi-detached | KT1 covers Kingston upon Thames only; Kingston Council handles the conservation area application. |
| KT2 | Kingston / Norbiton | Georgian fragments, Victorian terraces, 1930s semi-detached | Kingston / Norbiton sits wholly inside KT2, so Kingston Council validates every conservation area application submitted from an KT2 address. |
| KT3 | New Malden | Edwardian villas, 1930s semi-detached | New Malden sits wholly inside KT3, so Kingston Council validates every conservation area application submitted from an KT3 address. |
| KT5 | Surbiton / Tolworth | Edwardian villas, mansion blocks | A conservation area application at an KT5 address in Surbiton / Tolworth is determined by Kingston Council under its own Local Plan policies for Surbiton / Tolworth. |
| KT6 | Surbiton | Edwardian villas, mansion blocks | KT6 covers Surbiton only; Kingston Council handles the conservation area application. |
| KT9 | Chessington | 1930s semi-detached | A conservation area application at an KT9 address in Chessington is determined by Kingston Council under its own Local Plan policies for Chessington. |
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.
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.
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.

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