Hip-to-gable drawings for Greenwich semis and end-terraces — building the sloping hipped end up into a flat gable wall to unlock the full width of the roof, drawn to the Royal Borough of Greenwich's guidance, delivered in days and revised free until your decision, with a free approval-odds check first.
the Royal Borough of Greenwich granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. The Maritime Greenwich World Heritage Site and its buffer zone add height and setting tests near the town centre, which is where a policy-literate drawing pack earns its keep. Its dominant Georgian (1714–1837), Victorian (1837–1901), Edwardian (1901–1910) and interwar (1918–1939) 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 the Royal Borough of Greenwich needs a full application. Greenwich carries at least one Article 4 direction, and conservation areas including West Greenwich, Blackheath Park and Ashburnham Triangle remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Greenwich is determined against an 8-week statutory target.
Greenwich (Georgian and early-Victorian terraces inside the West Greenwich conservation area), Blackheath (villas and terraces around the Cator Estate and Blackheath Park), Westcombe Park (Edwardian and Victorian villas climbing the hill above the river), Charlton (the older cottages and interwar streets around Charlton Village), Eltham (interwar semis including the Well Hall Progress Estate) and Woolwich (denser Victorian terraces amid riverside regeneration) — these are the Greenwich pockets our drawings cover most. Heritage designations here include West Greenwich, Blackheath Park, Ashburnham Triangle, Westcombe Park and Charlton Village. the Royal Borough of Greenwich weighs each proposal against the Royal Greenwich Local Plan: Core Strategy with Detailed Policies and the borough's residential extensions design guidance, where protected Thames-side views shape what roof additions are acceptable on the borough's northern edge. On roofs the borough is parapet and butterfly roofs on the Georgian terraces and pitched and hipped roofs on the villas, over Georgian and early-Victorian terraces, Victorian and Edwardian villas and riverside and interwar housing.
The hip-to-gable is the semi's loft, and Greenwich has the stock that needs it — the borough runs to Georgian and early-Victorian terraces, Victorian and Edwardian villas and riverside and interwar housing, and wherever the roof is hipped it wastes the triangle of space where the slope cuts in at the side. Build that hip up into a gable wall and the loft gains full-height room right across the width, usually with a rear dormer behind it. the Royal Borough of Greenwich judges the scheme against the Royal Greenwich Local Plan: Core Strategy with Detailed Policies and the borough's residential extensions design guidance, and because the gable is a side elevation it is read against the neighbouring house first.
That neighbour relationship is the drawing's job. We build the gable to the original ridge line, match the brick or render and the verge detail to the host, and where the house is one of a mirrored pair we show the new gable against the neighbour's retained hip so the officer can weigh the balance. The Maritime Greenwich World Heritage Site and its buffer zone add height and setting tests near the town centre, and on a paired roof that is precisely the test a hip-to-gable has to pass.
Where Greenwich's streets are designated — West Greenwich, Blackheath Park, Ashburnham Triangle, Westcombe Park and Charlton Village among them — a hip-to-gable is scrutinised hard, because losing a hip changes the roofscape the area is protected for. Article 4 directions strip out permitted-development rights across Greenwich's conservation areas such as West Greenwich and Westcombe Park, so front-facing and roof alterations there need a full application. We check the designation before the gable is drawn.
A hip-to-gable in Greenwich is not permitted development — extending the roof up and out over the hip takes it past what Class B allows — so it needs a full application to the Royal Borough of Greenwich. These are the points the council weighs:
We draw the new gable to the existing ridge, the verge and materials matched to the host, and the balance with the neighbour's retained hip — the side-elevation relationships the Royal Borough of Greenwich's officers check first — and submit a validation-complete householder application, usually with the rear dormer on the same drawings.
Below is the Royal Borough of Greenwich's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Greenwich approves most householder applications, but the Maritime Greenwich World Heritage Site and its dense conservation coverage set the terms for what works near the town centre and the river. A hip-to-gable turns on side-elevation bulk and the balance of the pair, so a pack that draws the gable against the neighbour 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 Greenwich, Blackheath and Westcombe Park, the hip-to-gable that goes through is the restrained one: the gable built to the original ridge rather than above it, materials matched so the extended end reads as part of the house, and — on a pair — the new wall sitting comfortably beside the neighbour's hip rather than overwhelming it. On the borough's georgian and early-victorian terraces, squaring one or both hips is what makes the whole loft usable, which is why it is nearly always drawn with a rear dormer behind.
Protected Thames-side views shape what roof additions are acceptable on the borough's northern edge. We hold the gable to the ridge, detail the verge and the flank window to sit quietly, and present the gable and dormer as one roof alteration — so the Royal Borough of Greenwich assesses a single coherent change to the roof rather than two competing ones.
We draw hip-to-gable lofts on the semi-detached and end-of-terrace streets across the borough. A few of the neighbourhoods where Greenwich hip-to-gables come up most often:
Hip-to-gable loft drawings for Greenwich's Georgian and early-Victorian terraces inside the West Greenwich conservation area — ridge-matched, pair-balanced and drawn to the Royal Borough of Greenwich's guidance.
Hip-to-gable loft drawings for Blackheath's villas and terraces around the Cator Estate and Blackheath Park — ridge-matched, pair-balanced and drawn to the Royal Borough of Greenwich's guidance.
Hip-to-gable loft drawings for Westcombe Park's Edwardian and Victorian villas climbing the hill above the river — ridge-matched, pair-balanced and drawn to the Royal Borough of Greenwich's guidance.
Hip-to-gable loft drawings for Charlton's the older cottages and interwar streets around Charlton Village — ridge-matched, pair-balanced and drawn to the Royal Borough of Greenwich's guidance.
Hip-to-gable loft drawings for Eltham's interwar semis including the Well Hall Progress Estate — ridge-matched, pair-balanced and drawn to the Royal Borough of Greenwich's guidance.
Hip-to-gable loft drawings for Woolwich's denser Victorian terraces amid riverside regeneration — ridge-matched, pair-balanced and drawn to the Royal Borough of Greenwich's guidance.
A hip-to-gable only applies where the roof is hipped — and what it gains depends on the house. This is how the cases compare.
| Roof / house type | Hip-to-gable route | What it gains | What the Royal Borough of Greenwich checks |
|---|---|---|---|
| Hipped semi-detached | Full application, one gable | Full-width loft on the hipped side | Balance with the paired neighbour |
| Hipped end-terrace | Full application, one gable | Squares off the exposed end | Side elevation and street rhythm |
| Hipped detached | Full application, one or both ends | Loft across the whole roof | Bulk and the wider roofscape |
| Already gabled roof | Not needed — dormer only | Space via a rear dormer instead | Dormer volume and set-back |
In conservation areas such as West Greenwich and Blackheath Park, the loss of a hip is resisted and a hip-to-gable is assessed on its effect on the protected roofscape.
A fixed process built around how the Royal Borough of Greenwich validates and decides hip-to-gable applications — most drawings are submission-ready within seven days of survey.
Send us your Greenwich postcode and whether your roof is hipped one or both ends. We confirm your conservation and Article 4 status and score your odds against live the Royal Borough of Greenwich decisions.
We measure the ridge and eaves, the hip geometry and — on a pair — the neighbour's roof, so the new gable can be drawn to the original ridge and balanced against the adjoining house.
Chartered designers develop the gable and its rear dormer to your brief, drawn to the Royal Borough of Greenwich's roof-alteration guidance with the side elevation and neighbour relationship resolved on the page.
We submit the householder application, manage validation and case-officer queries, and revise the drawings free until the Royal Borough of Greenwich issues its decision.
Yes. A hip-to-gable rebuilds the sloping hipped end of the roof as a vertical gable, and because that extends the roof it falls outside permitted development — so it always needs a full householder application to the Royal Borough of Greenwich, whether or not your street is designated. It is usually submitted together with a rear dormer as a single roof-alteration application.
It replaces the roof's sloping hipped end with a flat gable wall built up to the ridge, turning the wasted triangle where the slope cuts in into full-height loft space across the width of the house. Greenwich's hipped semis and end-terraces suit it especially well, and it is nearly always paired with a rear dormer to open up the back of the roof too. the Royal Borough of Greenwich is the decision-maker.
Yes, and a matching pair often reads better to the Royal Borough of Greenwich than a single gable on one side, because it keeps the two houses balanced. Where only one owner converts, we draw the new gable carefully against the neighbour's retained hip so the officer can see the pair still works. The balance of the pair is one of the main things the council weighs.
Almost always. The gable opens up the side of the roof and a rear dormer opens up the back, and together they make the whole loft usable — so in Greenwich the two are typically drawn and submitted as one application to the Royal Borough of Greenwich. Presenting them together means the council assesses a single coherent change to the roof rather than two separate alterations.
Usually, on a semi or end-terrace. The gable is built up off the flank, and the loft steelwork often bears on the party wall, so the Party Wall etc. Act applies and notice must be served before work starts — separately from the Royal Borough of Greenwich's planning decision. We detail the junction on the drawings and flag the notice early so a surveyor can be appointed without delay.
We price each Greenwich hip-to-gable individually, because the roof geometry and whether it is one gable or two vary house to house, and send a fixed, no-obligation quote within one working day. It covers the full drawing pack — usually gable plus rear dormer — with free revisions until the Royal Borough of Greenwich approves. Call 020 7864 7245 to start.
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