Single-storey, double-storey, rear and side extension drawings for Epsom & Ewell homes — measured to Epsom & Ewell Borough Council's design guidance, delivered in days and revised free until your decision, with a free approval-odds check before you commit.
Epsom & Ewell Borough Council granted 85% of the householder planning decisions it made in its latest published year — 2 points below the 87% England-wide householder average. At roughly 34 square kilometres this is the smallest borough in Surrey, leaving very tight land supply, 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.
Class A and Class B set the thresholds — a rear dormer to 40m³ on a terrace or 50m³ on a semi or detached, and a single-storey rear extension to 3m on a terrace or 4m on a detached house — beyond which Epsom & Ewell Borough Council needs a full application. Epsom & Ewell carries at least one Article 4 direction, and conservation areas including Epsom Town Centre, Ewell Village and Woodcote remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Epsom & Ewell is determined against an 8-week statutory target.
Epsom town centre (Victorian villas and a commercial core within the town-centre conservation area), Ewell Village (a historic village conservation core around the spring ponds), Woodcote (affluent large detached houses on wooded plots near the Downs), Stamford Green (village-green edge cottages beside Epsom Common), Stoneleigh (interwar semi-detached commuter suburbia around the station) and West Ewell (postwar and interwar semis to the west of the borough) — these are the Epsom & Ewell pockets our drawings cover most. Heritage designations here include Epsom Town Centre, Ewell Village, Woodcote, Stamford Green, Chalk Lane and Church Street. Epsom & Ewell Borough Council weighs each proposal against the Epsom & Ewell Core Strategy (2007) and Development Management Policies DPD, with a new Local Plan 2022–2040 in preparation, where Metropolitan Green Belt covers much of the western and southern borough around Epsom Common and Horton Country Park. Converted-flat stock is limited and mostly confined to the town centre and around the station; the suburban wards are dominated by single-family houses that do retain some permitted-development scope.. On roofs the borough is pitched gabled and hipped tiled roofs on the suburban semis and steeper tiled roofs on the detached Downs-fringe houses, over Victorian and Edwardian villas and terraces around Epsom town centre and the railway, extensive interwar and postwar semi-detached suburbia and larger detached stockbroker-belt houses on the Downs fringe at Woodcote.
Epsom & Ewell 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 villas and terraces around Epsom town centre and the railway, extensive interwar and postwar semi-detached suburbia and larger detached stockbroker-belt houses on the Downs fringe at Woodcote, 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. Epsom & Ewell Borough Council judges every one of them against the Epsom & Ewell Core Strategy (2007) and Development Management Policies DPD, with a new Local Plan 2022–2040 in preparation, 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. At roughly 34 square kilometres this is the smallest borough in Surrey, leaving very tight land supply, so we design around it from the first sketch rather than discover it at validation.
Epsom & Ewell also protects whole streets — Epsom Town Centre, Ewell Village, Woodcote, Stamford Green, Chalk Lane and Church Street among them. The borough operates several Article 4 directions, including one over Epsom town-centre office buildings that removes the permitted right to convert offices to homes, alongside directions protecting primary retail frontages and conservation areas. 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 Epsom & Ewell 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 Epsom & Ewell Borough Council if any of these apply:
We draw the footprint, the ridge and eaves heights and the neighbours' daylight on the page — the relationships Epsom & Ewell Borough 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 Epsom & Ewell Borough Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Epsom & Ewell grants a fair share of householder applications broadly in line with the national average, with a very tight land supply and green-belt fringes the main pressure points. 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, England, 1 April 2025 - 31 March 2026). 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 Epsom town centre, Ewell Village and Woodcote, 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 villas and terraces around epsom town centre and the railway, a side-return infill frequently pairs with it to square off the plan; on wider larger detached stockbroker-belt houses on the downs fringe at woodcote, a two-storey side or rear extension can add a bedroom above without swallowing the garden.
Metropolitan Green Belt covers much of the western and southern borough around Epsom Common and Horton Country Park. 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 Epsom & Ewell Borough 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 Epsom & Ewell projects come up most often:
Extension drawings for Epsom town centre's Victorian villas and a commercial core within the town-centre conservation area — footprint-checked, daylight-tested and drawn to Epsom & Ewell Borough Council's guidance.
Extension drawings for Ewell Village's a historic village conservation core around the spring ponds — footprint-checked, daylight-tested and drawn to Epsom & Ewell Borough Council's guidance.
Extension drawings for Woodcote's affluent large detached houses on wooded plots near the Downs — footprint-checked, daylight-tested and drawn to Epsom & Ewell Borough Council's guidance.
Extension drawings for Stamford Green's village-green edge cottages beside Epsom Common — footprint-checked, daylight-tested and drawn to Epsom & Ewell Borough Council's guidance.
Extension drawings for Stoneleigh's interwar semi-detached commuter suburbia around the station — footprint-checked, daylight-tested and drawn to Epsom & Ewell Borough Council's guidance.
Extension drawings for West Ewell's postwar and interwar semis to the west of the borough — footprint-checked, daylight-tested and drawn to Epsom & Ewell Borough Council's guidance.
The right extension in Epsom & Ewell 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 Epsom & Ewell Borough 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 Epsom Town Centre and Ewell Village and Article 4 directions can remove permitted-development rights.
A fixed process built around how Epsom & Ewell Borough Council validates and decides householder extension applications — most drawings are submission-ready within seven days of survey.
Tell us your Epsom & Ewell 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 Epsom & Ewell Borough 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 Epsom & Ewell Borough 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 Epsom & Ewell Borough 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 Epsom & Ewell you will need to apply to Epsom & Ewell Borough 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 Epsom Town Centre and Ewell Village.
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 Epsom & Ewell Borough Council and a neighbour-consultation period, and it does not apply on designated land such as Epsom & Ewell'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 Epsom & Ewell Borough 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.
A householder planning application in Epsom & Ewell 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. Epsom & Ewell Borough 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 Epsom & Ewell Borough Council's building control or an approved inspector can sign the work off.
Every house and brief is different, so we price each Epsom & Ewell extension individually and send a fixed, no-obligation quote back within one working day. It covers the full drawing pack with free revisions until Epsom & Ewell Borough 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.