Back-of-house extension drawings for Hammersmith and Fulham homes — the glazed kitchen-diner across the rear, drawn to Hammersmith & Fulham Council's depth and daylight limits, delivered in days and revised free until your decision, with a free approval-odds check first.
Hammersmith & Fulham Council granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. Basement schemes require a detailed basement impact assessment covering ground stability, flooding and construction management, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901) and Edwardian (1901–1910) 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. Hammersmith and Fulham carries at least one Article 4 direction, and conservation areas including Brackenbury, Bradmore and Peterborough Estate remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Hammersmith and Fulham is determined against an 8-week statutory target.
Hammersmith (Victorian terraces around the Brackenbury village grid), Fulham (the Peterborough Estate 'Lion' houses and Hurlingham mansion flats), Shepherd's Bush (dense Victorian terraces, much of it split into flats), Brook Green (Edwardian terraces interspersed with mansion blocks), Parsons Green (Victorian terraces gathered around the green) and Sands End (former industrial land now mixing terraces with new housing) — these are the Hammersmith and Fulham pockets our drawings cover most. Heritage designations here include Brackenbury, Bradmore, Peterborough Estate, Ravenscourt and Wendell Park. Hammersmith & Fulham Council weighs each proposal against Hammersmith and Fulham Local Plan and the Planning Guidance SPD, where with terraces packed tightly, mansard and side-return proposals turn on protecting a consistent roofline and rear amenity. Converted flats dominate large parts of Shepherd's Bush and Fulham, and none carry householder permitted-development rights.. On roofs the borough is London butterfly roofs concealed behind the terrace parapets and back-addition closet-wing roofs that shape side-return schemes, over Victorian and Edwardian terraces, purpose-built mansion flats and converted period flats.
The rear extension is the workhorse of Hammersmith and Fulham home improvement — it is how a dark back kitchen becomes an open family room facing the garden. Because the borough is built largely from Victorian and Edwardian terraces, purpose-built mansion flats and converted period flats, most back walls sit close to a neighbour on at least one side, and that proximity, not the design, is what Hammersmith & Fulham Council scrutinises. The council reads the proposal against Hammersmith and Fulham Local Plan and the Planning Guidance SPD, 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. Basement schemes require a detailed basement impact assessment covering ground stability, flooding and construction management, so the rear elevation is composed around it rather than corrected after an objection.
Where the property sits in a conservation area — Brackenbury, Bradmore, Peterborough Estate, Ravenscourt and Wendell Park among Hammersmith and Fulham's — the larger-home extension route is switched off and even a modest rear addition needs consent. Conservation areas blanket much of the borough — Brackenbury, Bradmore and the Fulham Peterborough Estate among them — and Article 4 directions there remove permitted-development rights on frontages and roofs. We confirm the designation before the survey.
Many single-storey rear extensions in Hammersmith and Fulham are permitted development and need no application. You will normally need to apply to Hammersmith & Fulham 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 Hammersmith & Fulham 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 Hammersmith & Fulham Council's real householder decision record, taken from official planning statistics and refreshed as new data lands. Hammersmith and Fulham grants a high share of householder applications, though tight terrace density and basement engineering are the constraints that shape most designs. 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, 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 Hammersmith, Fulham and Shepherd's Bush, 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 victorian and edwardian terraces, 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.
With terraces packed tightly, mansard and side-return proposals turn on protecting a consistent roofline and rear amenity. We keep the extension inside the daylight splays, set any glazed roof below the first-floor cill, and retain the garden depth Hammersmith & Fulham 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 Hammersmith and Fulham back-of-house projects come up most often:
Rear extension drawings for Hammersmith's Victorian terraces around the Brackenbury village grid — depth-checked, daylight-tested and drawn to Hammersmith & Fulham Council's guidance.
Rear extension drawings for Fulham's the Peterborough Estate 'Lion' houses and Hurlingham mansion flats — depth-checked, daylight-tested and drawn to Hammersmith & Fulham Council's guidance.
Rear extension drawings for Shepherd's Bush's dense Victorian terraces, much of it split into flats — depth-checked, daylight-tested and drawn to Hammersmith & Fulham Council's guidance.
Rear extension drawings for Brook Green's Edwardian terraces interspersed with mansion blocks — depth-checked, daylight-tested and drawn to Hammersmith & Fulham Council's guidance.
Rear extension drawings for Parsons Green's Victorian terraces gathered around the green — depth-checked, daylight-tested and drawn to Hammersmith & Fulham Council's guidance.
Rear extension drawings for Sands End's former industrial land now mixing terraces with new housing — depth-checked, daylight-tested and drawn to Hammersmith & Fulham Council's guidance.
How far you can extend at the back in Hammersmith and Fulham depends on your house type and the route you take. This is how the options compare.
| Route | Depth allowed | Consent needed | What Hammersmith & Fulham 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 Brackenbury and Bradmore and Article 4 streets need a full application.
A fixed process built around how Hammersmith & Fulham Council validates and decides rear-extension applications — most drawings are submission-ready within seven days of survey.
Send us your Hammersmith and Fulham 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 Hammersmith & Fulham 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 Hammersmith & Fulham 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 Hammersmith & Fulham 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 Hammersmith and Fulham. You will need to involve Hammersmith & Fulham 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 Brackenbury and Bradmore, 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 Hammersmith & Fulham 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 Hammersmith and Fulham's conservation areas.
It is the daylight test Hammersmith & Fulham 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 Hammersmith and Fulham address specifically.
A two-storey rear extension almost always needs a full householder application to Hammersmith & Fulham 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 Hammersmith and Fulham 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 Hammersmith & Fulham 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 Hammersmith and Fulham address specifically.
We price each Hammersmith and Fulham 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 Hammersmith & Fulham 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.