L-shaped wraparound drawings for Southwark — a full-width rear extension married to the side-return infill so the whole ground floor opens up, drawn to Southwark Council's guidance, delivered in days and revised free until your decision, with a free approval-odds check first.
Southwark Council granted 89% of the householder planning decisions it made in its latest published year — 2 points above the 87% England-wide householder average. Mansards and roof extensions on terraces are assessed against the established roofline and the conservation-area appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant Georgian (1714–1837), Victorian (1837–1901) and postwar (1945–1970) housing stock sets the design brief on most streets.
Under Class B, a rear dormer stays permitted development up to 40m³ of added roof volume on a terrace or 50m³ on a semi-detached or detached house, while Class A allows a single-storey rear extension of 3m beyond the original rear wall on a terrace and 4m on a detached house before a full application is needed. Southwark carries at least one Article 4 direction, and conservation areas including Camberwell Grove, Dulwich Village and Bermondsey Street remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Southwark is determined against an 8-week statutory target.
Camberwell (Georgian and Victorian terraces around Camberwell Grove), Dulwich (villas and the Dulwich Village conservation area under the Dulwich Estate), Bermondsey (warehouse conversions and terraces off Bermondsey Street), Peckham (Victorian terraces including the Holly Grove enclave), Nunhead (modest Victorian terraces near Nunhead Green and the cemetery) and Walworth (dense Georgian and Victorian terraces threaded through large estates) — these are the Southwark pockets our drawings cover most. Heritage designations here include Camberwell Grove, Dulwich Village, Bermondsey Street, Holly Grove and Nunhead Green. Southwark Council weighs each proposal against the Southwark Plan and the borough's Residential Design Standards SPD, where the borough runs detailed basement and residential design standards on top of the usual tests. Camberwell, Peckham and the warehouse quarters around Bermondsey are heavily subdivided into flats, none of which hold householder permitted-development rights.. On roofs the borough is butterfly and parapet roofs on the terraces and flat and pitched roofs on the former warehouses, over Georgian and Victorian terraces, former warehouse and industrial conversions and Dulwich villas and postwar estates.
A wraparound is the ambitious ground-floor move, and Southwark has the stock that suits it — the borough is built largely from Georgian and Victorian terraces, former warehouse and industrial conversions and Dulwich villas and postwar estates, and the terraces and semis with an L-shaped back addition give you both a side alley to infill and a rear garden to project into. Do both in one L-shaped sweep and the kitchen, dining and living space merge into a single room that runs the full width of the house and out into the garden. Southwark Council assesses the scheme against the Southwark Plan and the borough's Residential Design Standards SPD, and because the footprint is large it looks hardest at what survives of the garden.
The drawings carry the argument. We show the retained private amenity space to scale, prove the rear projection sits within the depth the council accepts for the house type, and set the side leg so it clears the boundary and keeps the neighbour's daylight — a wraparound touches two boundaries, not one, so both neighbour relationships are drawn out. Mansards and roof extensions on terraces are assessed against the established roofline and the conservation-area appraisal, which on a footprint this size is where a scheme is won or lost.
Where Southwark's streets sit in conservation areas — Camberwell Grove, Dulwich Village, Bermondsey Street, Holly Grove and Nunhead Green among them — a wraparound is never permitted development and the design is read against the area's character. Southwark carries numerous Article 4 directions across conservation areas such as Camberwell Grove and Bermondsey Street, while the Dulwich Estate's scheme of management adds a separate layer of consent in Dulwich. We settle the designation before the footprint is fixed.
A wraparound in Southwark almost always needs a full householder application, because joining a side infill to a deep rear extension takes it past permitted-development limits. You will need to apply to Southwark Council if any of these apply — and for a true wraparound, at least one always will:
We draw the L-shaped footprint against the retained garden, the rear depth within the council's limit for your house type and the two neighbour boundaries the side and rear legs touch — the things Southwark Council's officers and both neighbours check — then submit a validation-complete householder application.
Below is Southwark Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Southwark grants most householder applications, but heavy conservation-area coverage, its basement policies and the Dulwich Estate's scheme of management dictate what is achievable in many neighbourhoods. A wraparound stands or falls on the garden it leaves and the two boundaries it meets, so a pack that settles both 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 Camberwell, Dulwich and Bermondsey, the approved wraparound is a single-storey L that reads as one considered addition rather than two bolted together: the rear leg kept to the depth the council accepts, the side leg matched to the host brick and roofed with a glazed flat or lantern, and enough garden left to satisfy the borough's private-amenity expectation. On the borough's georgian and victorian terraces, this is the biggest transformation the ground floor can take in a single application.
The borough runs detailed basement and residential design standards on top of the usual tests. We size the footprint so the garden that remains still works, keep the eaves and roof low enough to protect both neighbours' light, and present the whole L as a single scheme — which reads far more clearly to Southwark Council than a side return and a rear extension submitted as separate, overlapping proposals.
We draw L-shaped wraparounds on the terraced and semi-detached streets across the borough. A few of the neighbourhoods where Southwark wraparounds come up most often:
Wraparound extension drawings for Camberwell's Georgian and Victorian terraces around Camberwell Grove — garden-checked, boundary-detailed and drawn to Southwark Council's guidance.
Wraparound extension drawings for Dulwich's villas and the Dulwich Village conservation area under the Dulwich Estate — garden-checked, boundary-detailed and drawn to Southwark Council's guidance.
Wraparound extension drawings for Bermondsey's warehouse conversions and terraces off Bermondsey Street — garden-checked, boundary-detailed and drawn to Southwark Council's guidance.
Wraparound extension drawings for Peckham's Victorian terraces including the Holly Grove enclave — garden-checked, boundary-detailed and drawn to Southwark Council's guidance.
Wraparound extension drawings for Nunhead's modest Victorian terraces near Nunhead Green and the cemetery — garden-checked, boundary-detailed and drawn to Southwark Council's guidance.
Wraparound extension drawings for Walworth's dense Georgian and Victorian terraces threaded through large estates — garden-checked, boundary-detailed and drawn to Southwark Council's guidance.
A wraparound is the two smaller extensions combined — which changes what Southwark Council needs and what the ground floor gains. This is how the options compare.
| Ground-floor option | Permitted development? | What it gains | What Southwark Council checks |
|---|---|---|---|
| Side return only | Sometimes, within width and height limits | Full-width kitchen | Width, roof glazing |
| Rear extension only | Often, within the depth limit | Deeper living space | Rear depth, neighbour daylight |
| Wraparound (side + rear) | No — full application | Largest open-plan ground floor | Combined footprint, garden retained |
| Two-storey wraparound | No — full application | Room above as well as below | Bulk, overlooking, two boundaries |
In conservation areas such as Camberwell Grove and Dulwich Village, a wraparound is never permitted development and always needs a full application.
A fixed process built around how Southwark Council validates and decides wraparound applications — most drawings are submission-ready within seven days of survey.
Send us your Southwark postcode and house type. We confirm your conservation and Article 4 status, measure the garden against the borough's amenity expectation, and score your odds against live Southwark Council decisions.
We measure the side alley, the rear building line, the garden depth and both neighbours' window heights — the numbers the footprint, rear depth and two-boundary daylight tests depend on.
Chartered designers develop the L-shaped extension to your brief, drawn to Southwark Council's extension guidance with the retained garden, rear depth and both boundary junctions detailed on the page.
We submit the householder application, manage validation and case-officer queries, and revise the drawings free until Southwark Council issues its decision.
Almost always. A wraparound joins a side-return infill to a rear extension, and that combination takes the footprint past what permitted development allows, so it needs a full householder application to Southwark Council. Only the rare, very shallow case stays within the limits. On designated land — a conservation area such as Camberwell Grove and Dulwich Village — a wraparound is never permitted development, so an application is certain.
It is an L-shaped extension that fills the side return and wraps around into a full-width rear extension in one continuous sweep, so the kitchen, dining and living space become a single open room the width of the house. Southwark's period terraces and semis with an L-shaped back addition suit it well, which is why the wraparound is the borough's biggest single-storey extension. Southwark Council is the decision-maker.
Southwark Council expects a usable amount of private garden to survive, because a wraparound is the deepest single-storey footprint and takes the most outdoor space. There is no single fixed figure — it is judged on the plot and the borough's amenity guidance — so we draw the retained garden to scale and size the extension around it, rather than maximising the build and hoping it passes.
Usually on both sides. A wraparound touches two boundaries — the side leg runs along one neighbour and the rear leg can affect the other — so the Party Wall etc. Act often applies to each, and notice must be served before work starts. This is separate from Southwark Council's planning decision. We detail both boundary junctions on the drawings and flag the notices early so surveyors can be appointed without delaying the build.
Built as one project it usually is, and it reads better to Southwark Council too. A single wraparound application covers the whole L-shaped footprint in one decision rather than two overlapping submissions, and the build shares one set of foundations, one roof and one disruption. We draw it as a single coherent scheme so the council assesses one clear proposal instead of piecing two together.
We price each Southwark wraparound individually, because garden depth, side-alley width and roof form vary house to house, and send a fixed, no-obligation quote within one working day. It covers the full drawing pack with free revisions until Southwark Council approves, and we confirm the retained-garden and boundary position at the outset. Call 020 7864 7245 to start.
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