Single-storey, double-storey, rear and side extension drawings for Kingston upon Thames homes — measured to Kingston Council's design guidance, delivered in days and revised free until your decision, with a free approval-odds check before you commit.
Kingston Council granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. Surbiton's Victorian villas are assessed on how side and roof extensions read against the pair and the street, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901), Edwardian (1901–1910), interwar (1918–1939) and postwar (1945–1970) housing stock sets the design brief on most streets.
Before permission is required, Class B allows 40m³ of added loft volume on a terrace and 50m³ on a semi or detached house, and Class A allows a 3m single-storey rear extension on a terrace or 4m on a detached house. Kingston upon Thames carries at least one Article 4 direction, and conservation areas including Kingston Old Town (Town Centre), Surbiton and Coombe remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Kingston upon Thames is determined against an 8-week statutory target.
Kingston (the Old Town conservation area and riverside streets), Surbiton (Victorian and Edwardian villas and terraces), New Malden (interwar semi-detached estates), Norbiton (Victorian terraces near the hospital), Coombe (large detached houses on wooded plots) and Chessington (postwar and interwar suburban houses) — these are the Kingston upon Thames pockets our drawings cover most. Heritage designations here include Kingston Old Town (Town Centre), Surbiton, Coombe, Kingston Hill and Berrylands. Kingston Council weighs each proposal against Kingston Local Plan and the Residential Design SPD, where Coombe's low-density, wooded character strongly limits bulk and tree loss. On roofs the borough is pitched and butterfly roofs on the terraces and hipped roofs on the interwar semis, over Victorian and Edwardian terraces in Surbiton, interwar semi-detached houses and large detached homes in Coombe.
Kingston upon Thames homes come in a handful of recurring shapes, and each one points to a different extension. The borough is built largely from Victorian and Edwardian terraces in Surbiton, interwar semi-detached houses and large detached homes in Coombe, so a Victorian terrace usually wants a rear or side-return infill, while an interwar semi has room for a wider single-storey wrap or a two-storey side addition. Kingston Council judges every one of them against Kingston Local Plan and the Residential Design SPD, weighing footprint, height and the impact on the house next door before it looks at the elevations.
That is why the drawings decide the outcome. We set the extension depth against the permitted-development limits precisely, keep the eaves and ridge within the allowances, and plot the 45-degree daylight lines to the neighbours' windows so the case officer can see the amenity test is passed. Surbiton's Victorian villas are assessed on how side and roof extensions read against the pair and the street, so we design around it from the first sketch rather than discover it at validation.
Kingston upon Thames also protects whole streets — Kingston Old Town (Town Centre), Surbiton, Coombe, Kingston Hill and Berrylands among them. Surbiton, Coombe and the Old Town conservation areas apply design controls, and Article 4 directions on some streets remove permitted-development rights. On designated land the larger-home extension route and most side extensions stop being permitted development, so we confirm your address against those layers before drawing a line.
Plenty of Kingston upon Thames extensions are permitted development and need no planning application — a single-storey rear extension within the depth and height limits is the common case. You will normally need to apply to Kingston Council if any of these apply:
We draw the footprint, the ridge and eaves heights and the neighbours' daylight on the page — the relationships Kingston Council's officers weigh first — and submit a validation-complete pack, whether that is a lawful development certificate, a prior-approval notification or a full householder application.
Below is Kingston Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Kingston grants a strong share of householder applications, with the symmetry of Surbiton's villa pairs and the wooded character of Coombe shaping many decisions. A complete, policy-literate extension pack anticipates those pressure points before submission, which is why professionally drawn applications are decided faster and refused less often than DIY ones.
Source: MHCLG planning application statistics (householder decisions, rolling year). Compare every borough on our London approval-rate league table.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
Across Kingston, Surbiton and New Malden, the extension that lands most often is the single-storey rear addition — a glazed kitchen-diner across the back of the house, kept within the permitted-development depth or taken to a full application where the ground floor wants more. On the borough's victorian and edwardian terraces in surbiton, a side-return infill frequently pairs with it to square off the plan; on wider large detached homes in coombe, a two-storey side or rear extension can add a bedroom above without swallowing the garden.
Coombe's low-density, wooded character strongly limits bulk and tree loss. We size the extension to the amenity and daylight tests, match the roof and materials to the host house, and keep enough garden to satisfy Kingston Council's space standards — so the scheme answers the borough's questions before an objection can raise them. Where permitted-development rights are used up or removed, we prepare the householder application to the council's extension design guidance instead.
We draw extensions on every street in the borough. A few of the neighbourhoods where Kingston upon Thames projects come up most often:
Extension drawings for Kingston's the Old Town conservation area and riverside streets — footprint-checked, daylight-tested and drawn to Kingston Council's guidance.
Extension drawings for Surbiton's Victorian and Edwardian villas and terraces — footprint-checked, daylight-tested and drawn to Kingston Council's guidance.
Extension drawings for New Malden's interwar semi-detached estates — footprint-checked, daylight-tested and drawn to Kingston Council's guidance.
Extension drawings for Norbiton's Victorian terraces near the hospital — footprint-checked, daylight-tested and drawn to Kingston Council's guidance.
Extension drawings for Coombe's large detached houses on wooded plots — footprint-checked, daylight-tested and drawn to Kingston Council's guidance.
Extension drawings for Chessington's postwar and interwar suburban houses — footprint-checked, daylight-tested and drawn to Kingston Council's guidance.
The right extension in Kingston upon Thames depends on your house type and how much garden you can give up. This is how the main options compare on planning route and what they add.
| Extension type | Permitted development? | What it adds | What Kingston Council checks |
|---|---|---|---|
| Single-storey rear | Often, within 3m/4m depth (6m/8m via prior approval) | Bigger kitchen-diner across the back | Depth, height, neighbour daylight (45°) |
| Side-return infill | Sometimes, if within width and height limits | Squares off an L-shaped ground floor | Width vs the original house, glazing to boundary |
| Two-storey rear/side | No — full application | Extra bedroom or bathroom above | Bulk, overlooking, 7m rear-boundary gap |
| Wraparound (rear + side) | No — full application | Whole-width open-plan ground floor | Combined footprint and garden retained |
Route depends on your street — conservation areas such as Kingston Old Town (Town Centre) and Surbiton and Article 4 directions can remove permitted-development rights.
A fixed process built around how Kingston Council validates and decides householder extension applications — most drawings are submission-ready within seven days of survey.
Tell us your Kingston upon Thames postcode and house type. We confirm your conservation and Article 4 status, how much permitted-development depth you have left, and score your odds against live Kingston Council decisions.
We measure the existing footprint, floor and eaves levels, boundary distances and the neighbours' window positions — the numbers the depth limits and daylight tests depend on.
Chartered designers develop the single-storey, two-storey or side extension to your brief, drawn inside the permitted-development limits or to Kingston Council's extension design guidance.
We submit the certificate, prior-approval notice or application, manage validation and case-officer queries, and revise the drawings free until Kingston Council issues its decision.
Not always. A single-storey rear extension up to 3 metres deep on a terrace or semi, or 4 metres on a detached house, and no higher than 4 metres, is usually permitted development. In Kingston upon Thames you will need to apply to Kingston Council for two-storey extensions, side extensions wider than half the house, anything forward of the front wall, deeper rear extensions under the larger-home prior-approval route, and any extension in a conservation area such as Kingston Old Town (Town Centre) and Surbiton.
Standard permitted development allows 3 metres on a terraced or semi-detached house and 4 metres on a detached one. The larger-home extension scheme can double that to 6 or 8 metres, but it needs a prior-approval notification to Kingston Council and a neighbour-consultation period, and it does not apply on designated land such as Kingston upon Thames's conservation areas. We confirm which route your property qualifies for before drawing.
Two-storey and double-storey extensions almost always need a full householder application to Kingston Council, because they fall outside permitted development on most homes. The council looks closely at bulk, overlooking of neighbours and the 7-metre gap a two-storey rear extension must keep from the rear boundary. We design to those tests and show the daylight and privacy angles on the drawings. This applies to your Kingston upon Thames address specifically.
A householder planning application in Kingston upon Thames runs to a statutory eight-week target, a larger-home prior-approval notification to around six weeks including the neighbour-consultation period, and a lawful development certificate to eight weeks. Incomplete submissions stall at validation, so we submit a complete pack and manage officer queries to keep the decision on schedule. Kingston Council is the decision-maker.
Yes — planning permission and building regulations are separate consents, and almost every extension needs both. Planning governs whether you can build it; building control governs how it is built, covering structure, insulation, drainage and fire safety. We prepare the building-regulations drawings alongside the planning set so Kingston Council's building control or an approved inspector can sign the work off. This applies to your Kingston upon Thames address specifically.
Every house and brief is different, so we price each Kingston upon Thames extension individually and send a fixed, no-obligation quote back within one working day. It covers the full drawing pack with free revisions until Kingston Council approves, and we tell you upfront whether your extension qualifies as permitted development. Call 020 7864 7245 to get started.
Answer five quick questions and get a free planning score for your exact address — instantly. Then, if you want the full picture, unlock the detailed analysis: your council's live approval rates, local precedents, constraints on your street and a step-by-step route to permission.
Same fixed quotes, same fast drawings — wherever your project is.