Orangery and conservatory drawings for Epsom & Ewell homes — checked against the Class A rear limits and the 30m² building-regulations exemption, drawn to Epsom & Ewell Borough Council's guidance and revised free until your decision.
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.
The difference is not marketing. A conservatory is predominantly glazed — at least three quarters of the roof and half of the walls — which is what earns it the building-regulations exemption. An orangery has a solid masonry perimeter with a glazed lantern set into a flat roof, so it usually reads as a conventional extension for building control and has to meet Part L thermal standards, Part A structure and Part B fire like any other room.
Both are judged the same way for planning: as rear extensions, against the Class A depth, height and eaves limits, and against the Epsom & Ewell Core Strategy (2007) and Development Management Policies DPD, with a new Local Plan 2022–2040 in preparation. Epsom & Ewell is largely 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, and the design question is usually whether the glazing reads as a lightweight addition to that stock or as a bolted-on conservatory kit. On period houses, an orangery with a properly proportioned lantern almost always sits better than a full-height glazed box.
In conservation areas such as Epsom Town Centre and Ewell Village, rear glazing is assessed on visibility from the street and on the effect on the rear elevation's character. 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.
Many conservatories are permitted development. You will need an application to Epsom & Ewell Borough Council where any of these apply:
We check the scheme against the Class A planning limits and against the building-regulations exemption at the same time, so you know before committing whether you are building an exempt conservatory or a fully regulated room.
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. Glazed rear additions are judged on depth, eaves height and how the glazing meets the existing elevation.
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 schemes that succeed keep the eaves below the neighbour's ground-floor cill line, set the glazing back from the boundary, and use a solid parapet or brick perimeter to tie the addition into the house. On victorian and edwardian villas and terraces around epsom town centre and the railway, a lantern set in a flat roof usually reads better than a pitched glazed roof, and it avoids the summer overheating that makes full conservatories unusable for months a year.
At roughly 34 square kilometres this is the smallest borough in Surrey, leaving very tight land supply. The decision worth making early is whether to keep the separating doors. Keeping them preserves the building-regulations exemption but leaves you with a room that is not part of the house; removing them creates one continuous space but brings the whole addition inside Part L, which changes the glazing specification and usually the heating design too. We set out both versions before you commit.
We draw glazed rear additions across Epsom & Ewell. A few of the areas where they come up most often:
Orangery and conservatory drawings for Epsom town centre — Victorian villas and a commercial core within the town-centre conservation area — checked against the Class A limits and drawn to Epsom & Ewell Borough Council's guidance.
Orangery and conservatory drawings for Ewell Village — a historic village conservation core around the spring ponds — checked against the Class A limits and drawn to Epsom & Ewell Borough Council's guidance.
Orangery and conservatory drawings for Woodcote — affluent large detached houses on wooded plots near the Downs — checked against the Class A limits and drawn to Epsom & Ewell Borough Council's guidance.
Orangery and conservatory drawings for Stamford Green — village-green edge cottages beside Epsom Common — checked against the Class A limits and drawn to Epsom & Ewell Borough Council's guidance.
Orangery and conservatory drawings for Stoneleigh — interwar semi-detached commuter suburbia around the station — checked against the Class A limits and drawn to Epsom & Ewell Borough Council's guidance.
Orangery and conservatory drawings for West Ewell — postwar and interwar semis to the west of the borough — checked against the Class A limits and drawn to Epsom & Ewell Borough Council's guidance.
The planning test is the same for both. The building-regulations test is not.
| Structure | Planning route | Building regulations | Practical effect |
|---|---|---|---|
| Conservatory under 30m², doors retained | Class A rear extension limits | Largely exempt | Cheaper build, unheated in winter |
| Conservatory, doors removed | Class A rear extension limits | Part L applies in full | Continuous space, higher spec glazing |
| Orangery with solid perimeter and lantern | Class A rear extension limits | Fully regulated | Usable year round, better on period houses |
| Any of the above beyond the depth limits | Full householder application | As above | 8-week determination |
| Any of the above on designated land | Full householder application | As above | Design and visibility assessed |
Planning limits from the GPDO 2015, Schedule 2, Part 1, Class A; exemption criteria from the Building Regulations 2010, Schedule 2, Class 7.
A fixed process covering both consents, because they pull in different directions.
Send us your Epsom & Ewell postcode and house type. We confirm the Class A limits that apply, check designation status, and score your odds against live Epsom & Ewell Borough Council decisions.
We measure the rear elevation, eaves and ground levels, and the neighbouring boundary — the numbers that decide both the projection limit and the 2-metre eaves rule.
Chartered designers develop the orangery or conservatory to your brief, and we set out clearly whether it stays inside the building-regulations exemption or becomes a fully regulated room.
We submit the certificate or application, manage validation and officer queries, and revise free until Epsom & Ewell Borough Council decides.
Often not. A conservatory is treated as a rear extension, so it can be permitted development within the Class A limits — 3 metres of projection on a terrace or semi, 4 metres on a detached house, with eaves under 3 metres where it sits within 2 metres of a boundary. In Epsom & Ewell you will need an application to Epsom & Ewell Borough Council beyond those limits, and on designated land such as Epsom Town Centre and Ewell Village.
A conservatory is largely exempt if it is under 30 square metres, at ground level, separated from the house by external-quality doors, and has at least 75% of its roof and 50% of its walls glazed. Glazing, electrics and any drainage work still have to comply. Remove the separating doors and the exemption falls away — the space becomes part of the house and Part L thermal standards apply. This applies to your Epsom & Ewell address specifically. Epsom & Ewell Borough Council is the decision-maker.
For planning, none — both are rear extensions assessed against the same Class A limits by Epsom & Ewell Borough Council. The difference is in building control: an orangery's solid perimeter and flat roof with a lantern usually means it fails the glazing test for exemption, so it is fully regulated. That is why an orangery costs more to build but is comfortable in January.
Usually yes at the rear, though permitted-development rights are narrower on designated land and an Article 4 direction can remove them entirely. The assessment turns on whether the addition is visible from the street and how it meets the original rear elevation. A restrained orangery in matching brick with a lantern is consistently easier to get through than a proprietary glazed conservatory. This applies to your Epsom & Ewell address specifically. Epsom & Ewell Borough Council is the decision-maker.
A fully glazed roof will, unless it is specified for it. That is the practical reason most of our clients end up building an orangery instead: a solid insulated roof perimeter with a lantern gives daylight without the greenhouse effect, and keeps the space usable across the year. We raise it at design stage because it is much cheaper to solve on paper than after the build. This applies to your Epsom & Ewell address specifically. Epsom & Ewell Borough Council is the decision-maker.
If you excavate foundations within 3 metres of a neighbouring structure and deeper than its foundations, or build on the boundary itself, the Party Wall etc. Act 1996 applies and notice must be served. That is separate from Epsom & Ewell Borough Council's planning decision. We flag it at design stage so the notice period does not delay the start on site.
We quote each Epsom & Ewell orangery or conservatory individually, because the structure and the roof form change the work considerably, and send a fixed, no-obligation quote within one working day. It covers the full drawing pack with free revisions until Epsom & Ewell Borough Council approves. Call 020 7864 7245 to start.
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