Back-of-house extension drawings for Headington homes — the glazed kitchen-diner across the rear, drawn to Oxford City Council's depth and daylight limits, delivered in days and revised free until your decision, with a free approval-odds check first.
Oxford City Council granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. Old Headington's traditional stone houses, walls and lanes are protected, so materials, boundary treatments and roof forms are held to a vernacular standard, 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.
The permitted-development ceilings are fixed: 40m³ of new roof volume for a terraced loft and 50m³ for a semi or detached house under Class B, plus a 3m single-storey rear extension on a terrace or 4m on a detached house under Class A. Headington carries at least one Article 4 direction, and conservation areas including Old Headington, Headington Hill and Headington Quarry remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Headington is determined against an 8-week statutory target.
Old Headington (a stone-built village of post-medieval houses and winding lanes, designated a conservation area in 1971), Headington Quarry (a hamlet that grew around the stone pits that supplied Oxford's colleges), Headington Hill (late-Victorian villas laid out on a grand scale, subsequently much divided), New Headington (interwar and postwar streets serving the nearby hospitals), Highfield (Edwardian and interwar housing on the slope toward the city) and Wood Farm (a mid-20th-century council-built estate on the eastern edge) — these are the Headington pockets our drawings cover most. Heritage designations here include Old Headington, Headington Hill and Headington Quarry. Oxford City Council weighs each proposal against the Oxford Local Plan 2036, where proximity to the John Radcliffe and Nuffield hospitals and to Oxford Brookes drives intense rental demand, so the city-wide HMO Article 4 direction is heavily engaged here. Many Headington Hill villas and houses near the hospitals are subdivided into flats and student lets, which carry no householder permitted-development rights.. On roofs the borough is steep gabled stone-tiled and slate roofs on the village houses and hipped roofs on the interwar and postwar suburban stock, over post-medieval stone houses and cottages in the old village core, late-Victorian villas on Headington Hill, many since subdivided and interwar and postwar suburban housing serving the hospitals and universities.
The rear extension is the workhorse of Headington home improvement — it is how a dark back kitchen becomes an open family room facing the garden. Because the borough is built largely from post-medieval stone houses and cottages in the old village core, late-Victorian villas on Headington Hill, many since subdivided and interwar and postwar suburban housing serving the hospitals and universities, most back walls sit close to a neighbour on at least one side, and that proximity, not the design, is what Oxford City Council scrutinises. The council reads the proposal against the Oxford Local Plan 2036, and the first line an officer draws is the 45-degree splay from the neighbour's nearest window.
So the drawings live or die on geometry. We set the depth against the exact permitted-development figure, hold the eaves and the flat-roof or lantern build-up under the 4-metre height ceiling, and show the projection tested against both the 45-degree plan angle and the 25-degree section angle to the neighbouring windows. Old Headington's traditional stone houses, walls and lanes are protected, so materials, boundary treatments and roof forms are held to a vernacular standard, so the rear elevation is composed around it rather than corrected after an objection.
Where the property sits in a conservation area — Old Headington, Headington Hill and Headington Quarry among Headington's — the larger-home extension route is switched off and even a modest rear addition needs consent. Oxford operates a city-wide Article 4 direction (in force since 25 February 2012) that removes the permitted right to change a family home into a small C4 house in multiple occupation, so an HMO conversion anywhere in the city needs planning permission — and the conservation areas layer further controls on frontages, roofs and windows on top. We confirm the designation before the survey.
Many single-storey rear extensions in Headington are permitted development and need no application. You will normally need to apply to Oxford City Council, or use the larger-home prior-approval route, if any of these apply:
We draw the depth, the roof build-up and the daylight splays to each neighbour on the page — the tests Oxford City Council's officers apply first — and submit a validation-complete pack, whether that is a lawful development certificate, a larger-home prior-approval notice or a full householder application.
Below is Oxford City Council's real householder decision record, taken from official planning statistics and refreshed as new data lands. Oxford grants around 87% of the applications it decides, and in Headington the recurring tensions are the village conservation areas and the pressure of hospital and university rental demand under the HMO Article 4. Rear extensions turn most often on neighbour daylight and depth, so a drawing pack that proves those tests upfront is decided faster and refused less often than a DIY submission.
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 Old Headington, Headington Quarry and Headington Hill, the approved rear extension is typically a single-storey glazed box within the depth limit, roofed either flat with a lantern or in a shallow mono-pitch, and finished in brick or render to match the host wall. On the borough's post-medieval stone houses and cottages in the old village core, keeping the projection to the permitted-development figure often avoids an application entirely; where owners want the full 6 metres, the larger-home route succeeds when the neighbour-consultation period passes without a sustained objection.
Proximity to the John Radcliffe and Nuffield hospitals and to Oxford Brookes drives intense rental demand, so the city-wide HMO Article 4 direction is heavily engaged here. We keep the extension inside the daylight splays, set any glazed roof below the first-floor cill, and retain the garden depth Oxford City Council expects — so the back elevation answers the amenity case before a neighbour can lodge one. Two-storey rear extensions we draw with the 7-metre boundary gap and privacy screening resolved on the plan.
We draw rear extensions on every street in the borough. A few of the neighbourhoods where Headington back-of-house projects come up most often:
Rear extension drawings for Old Headington's a stone-built village of post-medieval houses and winding lanes, designated a conservation area in 1971 — depth-checked, daylight-tested and drawn to Oxford City Council's guidance.
Rear extension drawings for Headington Quarry's a hamlet that grew around the stone pits that supplied Oxford's colleges — depth-checked, daylight-tested and drawn to Oxford City Council's guidance.
Rear extension drawings for Headington Hill's late-Victorian villas laid out on a grand scale, subsequently much divided — depth-checked, daylight-tested and drawn to Oxford City Council's guidance.
Rear extension drawings for New Headington's interwar and postwar streets serving the nearby hospitals — depth-checked, daylight-tested and drawn to Oxford City Council's guidance.
Rear extension drawings for Highfield's Edwardian and interwar housing on the slope toward the city — depth-checked, daylight-tested and drawn to Oxford City Council's guidance.
Rear extension drawings for Wood Farm's a mid-20th-century council-built estate on the eastern edge — depth-checked, daylight-tested and drawn to Oxford City Council's guidance.
How far you can extend at the back in Headington depends on your house type and the route you take. This is how the options compare.
| Route | Depth allowed | Consent needed | What Oxford City Council checks |
|---|---|---|---|
| Standard permitted development | 3m terrace/semi · 4m detached | Lawful development certificate (optional) | Depth, 4m height, materials |
| Larger-home prior approval | 6m terrace/semi · 8m detached | Prior-approval notice + neighbour consultation | Neighbour objections on amenity |
| Full householder application | Beyond the above, or two-storey | Full planning permission | Daylight (45°/25°), bulk, garden retained |
| Conservation area | Case by case | Full planning permission | Character, roof form, boundary treatment |
The larger-home route is switched off on designated land — conservation areas such as Old Headington and Headington Hill and Article 4 streets need a full application.
A fixed process built around how Oxford City Council validates and decides rear-extension applications — most drawings are submission-ready within seven days of survey.
Send us your Headington postcode and house type. We confirm your conservation and Article 4 status, how much rear-extension depth you have under permitted development, and score your odds against live Oxford City Council decisions.
We measure the original rear wall, floor and eaves levels, side and rear boundary distances and the neighbours' window positions — the numbers the depth limit and daylight splays depend on.
Chartered designers develop the single or two-storey rear extension to your brief, drawn inside the permitted-development limits or to Oxford City Council's extension design guidance, with the daylight angles shown.
We submit the certificate, prior-approval notice or application, handle validation and case-officer queries, and revise the drawings free until Oxford City Council issues its decision.
Often not. 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 Headington. You will need to involve Oxford City Council for anything deeper via the larger-home route, for two-storey rear extensions, and for any rear extension in a conservation area such as Old Headington and Headington Hill, where those permitted-development rights fall away.
The larger-home extension scheme lets a single-storey rear extension reach 6 metres on a terrace or semi, or 8 metres on a detached house — double the standard allowance. It is not automatic: you submit a prior-approval notification to Oxford City Council, neighbours are consulted, and if one objects on amenity grounds the council rules on it. It also does not apply on designated land such as Headington's conservation areas.
It is the daylight test Oxford City Council applies to protect neighbours. Drawn on plan, a line at 45 degrees from the midpoint of the neighbour's nearest ground-floor window should not be crossed by your extension; a companion 25-degree line is checked in section. If the projection breaches it, the extension is likely to be shortened or refused, so we test and prove it on the drawings before submission. This applies to your Headington address specifically.
A two-storey rear extension almost always needs a full householder application to Oxford City Council, as it sits outside permitted development on most homes. The council checks that it stays at least 7 metres from the rear boundary, does not overbear the neighbours and avoids new overlooking. We resolve the boundary gap, privacy and daylight on the plans so the application is decided on its merits. This applies to your Headington address specifically.
Frequently, yes. If the rear extension involves work to a shared wall, building up to the boundary, or excavating foundations near a neighbour's structure, the Party Wall etc. Act applies and you must serve notice — this is separate from Oxford City Council's planning decision. We flag it early and can prepare the drawings a party-wall surveyor needs alongside the planning set. This applies to your Headington address specifically.
We price each Headington rear extension on its own footprint and send a fixed, no-obligation quote within one working day. It covers the full drawing pack with free revisions until Oxford City Council approves, and we confirm at the outset whether your extension is permitted development, needs prior approval, or a full application. Call 020 7864 7245 to begin.
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Same fixed quotes, same fast drawings — wherever your project is.