Two-storey extension drawings for Elmbridge homes — bedroom above, living space below, drawn against the 3-metre projection and 7-metre boundary rules and to Elmbridge Borough Council's design guidance, delivered in days and revised free until your decision.
Elmbridge Borough Council granted 78% of the householder planning decisions it made in its latest published year — 9 points below the 87% England-wide householder average. Around three-fifths of the borough is Metropolitan Green Belt, together with extensive protected commons, a dominant constraint on the countryside, 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. Elmbridge carries at least one Article 4 direction, and conservation areas including Esher, Church Cobham and Weybridge Town Centre and Monument Green remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Elmbridge is determined against an 8-week statutory target.
Weybridge (ultra-prime gated mansions on large plots around St George's Hill), Esher (affluent commuter town with a period and detached-house conservation core), Cobham (a village core surrounded by large, high-value detached homes), Walton-on-Thames (a larger town mixing period, postwar and riverside flatted stock), Thames Ditton (riverside village character with Victorian and Edwardian houses) and Claygate (village-scale suburban semis and detached homes) — these are the Elmbridge pockets our drawings cover most. Heritage designations here include Esher, Church Cobham, Weybridge Town Centre and Monument Green, Oatlands, Thames Ditton and Giggs Hill Green and Hersham Village. Elmbridge Borough Council weighs each proposal against the Elmbridge Core Strategy (adopted 2011) and Development Management Plan (2015), with a new Local Plan in preparation, where very high designated-heritage coverage across roughly twenty conservation areas of small historic town and village cores. Flats and apartments cluster in the town centres of Walton, Weybridge and Molesey and along the riverside; converted flats carry no householder permitted-development rights.. On roofs the borough is steep tiled and gabled roofs, often tile-hung, on the Arts-and-Crafts and mock-Tudor detached houses and hipped roofs on the interwar semis, over large detached stockbroker-belt houses, including the private St George's Hill estate at Weybridge, Victorian and Edwardian period villas in the town and village cores, interwar and postwar detached and semi-detached suburban housing and riverside apartments in the Thames-side towns.
Adding at first floor changes the question the case officer asks. A single-storey extension is judged mostly on daylight and garden loss; a two-storey extension is judged on overlooking, bulk against the neighbouring roofline, and whether it reads as part of the house or bolted onto it. Elmbridge is largely large detached stockbroker-belt houses, including the private St George's Hill estate at Weybridge, Victorian and Edwardian period villas in the town and village cores, interwar and postwar detached and semi-detached suburban housing and riverside apartments in the Thames-side towns, and steep tiled and gabled roofs, often tile-hung, on the Arts-and-Crafts and mock-Tudor detached houses and hipped roofs on the interwar semis set what a matching roof actually means here.
The permitted-development route exists but is narrow: 3 metres of rear projection, a 7-metre stand-off from the rear boundary, eaves and ridge no higher than the original, and side-facing upper windows obscure-glazed and non-opening below 1.7 metres above floor level. Most two-storey schemes fail one of those, usually the 7-metre boundary rule on a shorter garden, and go in as a full application instead. We establish which route applies before designing, because it changes the drawing set.
Around three-fifths of the borough is Metropolitan Green Belt, together with extensive protected commons, a dominant constraint on the countryside. Elmbridge has made immediate Article 4 directions removing permitted-development rights on specific Green Belt and amenity land, such as land off Woodlands Lane in Cobham, to prevent unauthorised change ahead of formal control.
Some two-storey rear extensions are permitted development. You will need a full application to Elmbridge Borough Council if any of these apply:
We set the projection and boundary distance on the site plan, prove the roof-pitch match on the elevations, and specify obscure glazing on the side windows — the three things Elmbridge Borough Council checks first — then submit a validation-complete pack.
Below is Elmbridge Borough Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Elmbridge is one of the stricter commuter authorities, with roughly three-fifths of the borough in Green Belt suppressing the countryside grant rate while urban householder schemes fare considerably better. Two-storey schemes attract more neighbour comment than any other householder work, so the overlooking and daylight case has to be made on the drawings.
Source: MHCLG planning application statistics (householder decisions, England, 1 April 2025 - 31 March 2026). Compare every borough on our London approval-rate league table.
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Across Weybridge, Esher and Cobham, the schemes that succeed set the first floor back from the ground floor, keep the ridge below the original, and treat the flank wall as blank or obscure-glazed. On large detached stockbroker-belt houses, including the private st george's hill estate at weybridge, matching the eaves line matters more than matching the brick: an extension that carries the existing eaves through reads as original even in a different material.
Very high designated-heritage coverage across roughly twenty conservation areas of small historic town and village cores. We draw the 45-degree daylight test from the neighbour's nearest habitable window, show the window positions in section, and set out the steel and foundation implications early — a two-storey extension changes the load path, so the structural design and the planning design have to be developed together rather than in sequence.
We draw two-storey extensions across Elmbridge. A few of the areas where they come up most often:
Two storey extension drawings for Weybridge — ultra-prime gated mansions on large plots around St George's Hill — dimensioned against the 3m and 7m limits and drawn to Elmbridge Borough Council's guidance.
Two storey extension drawings for Esher — affluent commuter town with a period and detached-house conservation core — dimensioned against the 3m and 7m limits and drawn to Elmbridge Borough Council's guidance.
Two storey extension drawings for Cobham — a village core surrounded by large, high-value detached homes — dimensioned against the 3m and 7m limits and drawn to Elmbridge Borough Council's guidance.
Two storey extension drawings for Walton-on-Thames — a larger town mixing period, postwar and riverside flatted stock — dimensioned against the 3m and 7m limits and drawn to Elmbridge Borough Council's guidance.
Two storey extension drawings for Thames Ditton — riverside village character with Victorian and Edwardian houses — dimensioned against the 3m and 7m limits and drawn to Elmbridge Borough Council's guidance.
Two storey extension drawings for Claygate — village-scale suburban semis and detached homes — dimensioned against the 3m and 7m limits and drawn to Elmbridge Borough Council's guidance.
The first-floor limits are tighter than the ground-floor ones. This is how the common cases compare.
| Scheme | Permitted development? | Deciding limit | What Elmbridge Borough Council checks |
|---|---|---|---|
| Two-storey rear, 3m projection, 7m+ to boundary | Often yes | 3m projection / 7m boundary | Roof match, side-window glazing |
| Two-storey rear, under 7m to boundary | No — full application | Rear-boundary distance | Overlooking, daylight, garden loss |
| Two-storey side extension | No — full application | Side elevation | Gap to boundary, street rhythm |
| Two-storey wraparound | No — full application | Combined footprint | Bulk, massing, neighbour amenity |
| Any two-storey on designated land | No — full application | Designation | Character and appearance |
Limits from the GPDO 2015, Schedule 2, Part 1, Class A — two-storey rear extension conditions.
A fixed process built around how Elmbridge Borough Council validates and decides two-storey applications.
Send us your Elmbridge postcode and garden depth. We measure the 7-metre boundary rule against your plot, confirm designation status, and score your odds against live Elmbridge Borough Council decisions.
We measure the original rear wall, eaves and ridge heights, garden depth and every neighbouring window that faces the site — the inputs the daylight and overlooking case is built from.
Chartered designers develop the two-storey addition to your brief with the roof and eaves resolved, and we coordinate the load path so the structural scheme and the planning scheme are the same building.
We submit the application, manage validation and case-officer queries, and revise the drawings free until Elmbridge Borough Council issues its decision.
Often, but not always. A two-storey rear extension can be permitted development if it projects no more than 3 metres, sits at least 7 metres from the rear boundary, does not exceed the existing eaves and ridge, and has obscure-glazed non-opening side windows below 1.7 metres. In Elmbridge, the 7-metre rule is what most commonly forces a full application to Elmbridge Borough Council.
No part of a permitted-development two-storey rear extension may come within 7 metres of the boundary opposite the rear wall of the house. It exists to protect the neighbour behind you from being overlooked at first floor. On shorter Elmbridge gardens this is decisive, and we measure it on survey before any design work rather than discovering it at validation. Elmbridge Borough Council is the decision-maker.
Not under permitted development — two-storey side extensions always need a full application to Elmbridge Borough Council. They are assessed on the gap to the boundary, whether the street's rhythm of spaces between houses survives, and whether the extension is subordinate to the original. Setting the first floor back from the front building line and down from the ridge is what usually makes the difference.
Overlooking is the most common objection, and it is answerable on the drawings. We position habitable-room windows away from neighbouring gardens, obscure-glaze and fix shut anything on the flank below 1.7 metres, and show the sight lines in section. Where the geometry is tight, a rooflight or a high-level window gives the same daylight without the mutual overlooking that draws objections. This applies to your Elmbridge address specifically. Elmbridge Borough Council is the decision-maker.
Almost certainly. Excavating within 3 metres of a neighbouring structure and building on or up to the boundary both trigger the Party Wall etc. Act 1996, and a two-storey extension usually does both. It is entirely separate from Elmbridge Borough Council's planning decision, so we flag the notice period early and detail the junction on the drawings.
Yes. Adding a floor changes the load path from roof to foundation, so beams, padstones and foundation depths all need designing and calculating for building control. Planning and building regulations are separate consents, and the structural set is what building control assesses — we prepare both so the approved scheme is the buildable one. This applies to your Elmbridge address specifically. Elmbridge Borough Council is the decision-maker.
We quote each Elmbridge two-storey extension individually, because plot depth, roof form and structural complexity vary house to house, and send a fixed, no-obligation quote within one working day. It covers the drawing pack with free revisions until Elmbridge Borough Council approves. Call 020 7864 7245 to start.
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