Kingston upon Thames — covered by Kingston Council.
Planning permission drawings delivered by an MCIAT chartered team.
Building regulations drawings delivered by an MCIAT chartered team.
Loft conversion drawings delivered by an MCIAT chartered team.
House extension drawings delivered by an MCIAT chartered team.
Mansard roof extensions delivered by an MCIAT chartered team.
Garage conversion drawings delivered by an MCIAT chartered team.
Basement conversion drawings delivered by an MCIAT chartered team.
Structural calculations delivered by an MCIAT chartered team.
Measured building survey delivered by an MCIAT chartered team.
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Rear dormer drawings delivered by an MCIAT chartered team.


KT1 primarily covers Kingston upon Thames in Kingston upon Thames.
Decisions for KT1 are made by Kingston Council. Standard Permitted Development rules apply for most rear extensions and loft conversions on terraced and semi-detached houses, unless the property is in a conservation area, is listed, or sits under an Article 4 Direction. Article 4 in Kingston upon Thames: No.
Building regs from £950. We do not charge hourly. Free site survey across all KT1 addresses.
From first call to planning decision: typically 12–14 weeks. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination. Kingston Council timelines align with the national norm.
Kingston upon Thames in KT1 is characterised by the housing stock of Kingston upon Thames — broadly edwardian villas in surbiton and new malden.

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Every KT1 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. KT1 fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| KT1 | Kingston upon Thames | Georgian fragments, Victorian terraces, 1930s semi-detached | Kingston upon Thames sits wholly inside KT1, so Kingston Council validates every drawing package submitted from an KT1 address. |
| KT1 | Kingston | Georgian fragments, Victorian terraces, 1930s semi-detached | Kingston sits inside KT1; drawing package proposals here are determined by Kingston Council. |
| KT2 | Kingston / Norbiton | Georgian fragments, Victorian terraces, 1930s semi-detached | Adjoining district to KT1, also inside Kingston upon Thames for drawing package purposes. |
| KT3 | New Malden | Edwardian villas, 1930s semi-detached | Adjoining district to KT1, also inside Kingston upon Thames for drawing package purposes. |
| KT5 | Surbiton / Tolworth | Edwardian villas, mansion blocks | Adjoining district to KT1, also inside Kingston upon Thames for drawing package purposes. |
Roof pitch, wall build-up and plot depth change every few KT1 streets, and each one changes what a drawing package can achieve at that address.
Conservation areas covering KT1 (Kingston upon Thames): Kingston Council runs 22, and Hampton Wick, Coombe Hill, Kingston Old Town are the ones KT1 (Kingston upon Thames) owners meet most. A drawing package inside a KT1 (Kingston upon Thames) conservation area loses permitted development, so the KT1 (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 drawing package is judged on the street elevation first.
Article 4 and your KT1 (Kingston upon Thames) drawing package: Kingston Council has made no borough-wide direction, so permitted development for a drawing package in KT1 (Kingston upon Thames) generally survives outside KT1 (Kingston upon Thames) conservation areas and listed curtilages. A Lawful Development Certificate at £274 is how a KT1 owner records that a drawing package was lawful.
What KT1 (Kingston upon Thames) is built from: 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. That mix decides the drawing package route in KT1 (Kingston upon Thames) more than the postcode does, and it is what a Kingston Council case officer reads first. A householder application costs £548 paid to Kingston Council direct, with 8 weeks to a decision once validated.
Sources for this KT1 drawing package 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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