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Postcode coverage

Architectural drawings in SW3

Chelsea / Brompton — covered by RBKC Planning.

SW3 at a glance

Primary area
Chelsea / Brompton
Borough
Kensington and Chelsea
Planning authority
RBKC Planning
Article 4 in force
Yes
Conservation areas (borough)
38
Quote turnaround
Same day

London period house exterior with architectural character — architectural drawings
Services in SW3

Drawings for every SW3 property type

Questions about SW3

SW3 planning FAQ

What borough is SW3?

SW3 primarily covers Chelsea / Brompton in Kensington and Chelsea.

Do I need planning permission in SW3?

Decisions for SW3 are made by RBKC Planning. 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 Kensington and Chelsea: Yes.

What does it cost to get drawings in SW3?

Building regs from £950. We do not charge hourly. Free site survey across all SW3 addresses.

How long does a project take in SW3?

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. RBKC Planning timelines align with the national norm.

What housing stock dominates SW3?

Chelsea / Brompton in SW3 is characterised by the housing stock of Kensington and Chelsea — broadly grand white stucco regency and victorian terraces.

Boroughs covering SW3

Local authorities

Nearby postcodes in Kensington and Chelsea

Architectural drawings in SW3 — the exterior of London house before works
The exterior of a london house before works — architectural drawings in SW3.
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Where in SW3 does a drawing package actually get determined?

Every SW3 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. SW3 fees below are the statutory England rates for 2026, not drawing package estimates.

PostcodeAreaDominant stockWhat it means for a drawing package
SW3Chelsea / BromptonGeorgian and Victorian terraces, listed buildingsSW3 covers Chelsea / Brompton only; RBKC Planning handles the drawing package.
SW3ChelseaGeorgian and Victorian terraces, listed buildingsChelsea sits inside SW3; drawing package proposals here are determined by RBKC Planning.
SW3BromptonStucco terraces, Edwardian mansion blocksBrompton sits inside SW3; drawing package proposals here are determined by RBKC Planning.
SW5Earl's CourtStucco terraces, Edwardian mansion blocksAdjoining district to SW3, also inside Kensington and Chelsea for drawing package purposes.
SW7South Kensington / KnightsbridgeStucco terraces, mansion blocks, listed buildingsAdjoining district to SW3, also inside Kensington and Chelsea for drawing package purposes.
SW10West Brompton / World's EndGeorgian and Victorian terraces, listed buildingsAdjoining district to SW3, also inside Kensington and Chelsea for drawing package purposes.

How does a drawing package differ street by street across SW3?

Roof pitch, wall build-up and plot depth change every few SW3 streets, and each one changes what a drawing package can achieve at that address.

What local planning policy applies to a drawing package in SW3?

SW3 (Chelsea / Brompton) conservation designations: there are 38 across RBKC Planning, Kensington, Chelsea, Notting Hill among them. Designation costs a SW3 (Chelsea / Brompton) owner the permitted-development route: a drawing package then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Earls Court is the SW3 (Chelsea / Brompton) designation that most often changes a drawing package design.

SW3 (Chelsea / Brompton) and Article 4: Article 4 Directions covering HMOs, office-to-residential, and basement developments — RBKC has some of the strictest basement policies in London. A drawing package planned at a SW3 address is checked against that direction first; RBKC Planning publishes the SW3 (Chelsea / Brompton) extent, and the SW3 line rarely follows the SW3 (Chelsea / Brompton) boundary you would expect.

SW3 (Chelsea / Brompton) below-ground policy: RBKC's basement policy (post-2015) limits to single-storey under 50% of garden area; double-storey basements effectively prohibited in residential streets. Any drawing package in SW3 (Chelsea / Brompton) that goes below existing foundations triggers two months notice under section 6 of the Party Wall etc. Act 1996, and RBKC Planning will want the SW3 ground and groundwater position set out.

SW3 (Chelsea / Brompton) housing stock: Grand white stucco Regency and Victorian terraces; red-brick Queen Anne mansions in Kensington; Edwardian mansion blocks; almost no post-war housing stock. Internationally wealthy residents; extensive listed building coverage; heritage and streetscape prioritised in every decision. Read that before choosing a drawing package route in SW3 (Chelsea / Brompton) — construction, not postcode, sets what is achievable. RBKC Planning charges £548 for a householder application and has 8 weeks to determine it.

Who decides a drawing package on the edge of SW3?

Sources for this SW3 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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An architectural technologist checking a printed set of house drawings, marking a proposed elevation in red — architectural drawings in SW3
Every set is checked line by line against the validation checklist before it leaves the office.
Further reading

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