Wraparound Extension Drawings in Custom House E16
Fixed-fee, MCIAT-chartered wraparound extension drawings for Custom House (E16) homeowners — London Borough of Newham validation and local constraints handled from the start.
Custom House (E16) grew as Victorian dock-worker housing around the Royal Victoria Dock, which opened in 1855, and now sits inside the Royal Docks regeneration and Enterprise Zone. Surviving and postwar-rebuilt terraces sit alongside major new-build development around the ExCeL and the Elizabeth line, so householder work here is largely extensions and lofts on the terraced houses that line the residential streets.
There is no conservation area covering the Custom House part of E16 — that is a genuine, verified fact, not an omission. Its planning character is instead shaped by the working dockside terraced grain and the surrounding regeneration, and by the London Borough of Newham's householder design expectations, which lean on keeping original building lines, materials and roof continuity intact. We treat that terraced character, rather than a conservation designation, as the reference point when we design an extension.
Demand for rear extensions and loft conversions runs steadily across residential streets like Tollgate Road, Rogers Road and Chadwin Road, where compact terraced houses sit on modest plots. We check each property's permitted-development position against Newham's borough-wide controls first — and any surface-water drainage points given the low-lying dockside land — then prepare drawings that either stay within permitted development or are ready to validate as a full householder application.
Planning in Custom House (E16): what to know before you apply
Because Custom House is a dockside mix of surviving and rebuilt terraces set within the Royal Docks regeneration area, Newham assess extensions against the prevailing rhythm and building line of the individual residential street, so matching original brick, roof continuity and neighbour relationships matters alongside the numbers. There is no conservation area and no local Article 4 direction in the Custom House part of E16, so many terraced houses retain permitted development rights for rear and loft work — but compact plots, shared party walls and low-lying land mean depth, height, neighbour impact and drainage are the points a householder application is judged on.
Typical Custom House housing stock
A mix of surviving and postwar-rebuilt terraced housing with substantial new-build apartments across the Royal Docks regeneration area. It is the terraced houses on the residential streets, rather than the apartment blocks, that generate most of the rear-extension and loft-conversion work here.
Streets we regularly draw for in Custom House
Barrier Point Road · Tollgate Road · Rayleigh Road · Wesley Avenue · Rogers Road · Ruscoe Road · Egham Road · Chadwin Road · Cranley Road · Selby Road · Caraway Close · Eclipse Road
What E16 is actually built of
Measured from 274 classified residential buildings in E16, not from a description of the area.
Custom House E16 housing mix
Residential building form across the E16 postcode district, from 274 classified buildings.
| Attached on more than one side | 68% |
|---|---|
| Attached on one side | 27% |
| Detached | 4% |
| Median building footprint | 50 m² |
| Addresses per buildingAbove about 2 means flats and maisonettes dominate | 2.42 |
| Buildings classified | 274 |
Source: Ordnance Survey National Geographic Database (derived statistics). Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Extracted 2026-08-17.
Wraparound Extension Drawings for Custom House (E16) homes: the package and the process
A wraparound is assessed as one addition, so the drawings have to present it as one: a single proposed footprint with the rear depth and the side width both dimensioned, the roof drawn as it turns the corner, and the remaining garden shown on the site plan.
The corner is where the technical work sits. Two roof planes and two structural spans meet at the return, drainage has to get round it, and the internal opening is usually wide enough to need a designed frame rather than a single beam. We resolve that junction on the drawings before it becomes a question on site.
A wraparound needs both a rear garden and a side alley, which in practice means a terrace or end-of-terrace with an outrigger. Where only one of the two exists, the honest answer is a rear extension or a side return — the combined footprint has nowhere to turn the corner.
What makes a wraparound extension different from a rear or side return alone?
A rear extension adds depth at the back of the house; a side return adds width down the alley; a wraparound does both at once, so the new floor area turns the corner of the original building rather than sitting against just one wall. The result is typically the largest open-plan space a single-storey extension can deliver, but it also means more of the original external wall is removed and more of the roof is new, which raises the structural and drainage stakes compared with either extension on its own. Homeowners who start out planning a rear extension or a side return alone often move to a wraparound once they see how little extra it costs to combine the two, since much of the groundwork, roof structure and glazing is shared between them rather than duplicated.
Do wraparound extensions need full planning permission in London?
Almost always, yes. Permitted development allowances are calculated on combined additions to the original house, and a wraparound's depth plus width together generally exceed the volume and footprint limits that apply to a rear extension or side extension considered separately. A Lawful Development Certificate route is rarely viable for a genuine wraparound.
Conservation area status and Article 4 directions, common across the terraced streets where wraparound extensions are most popular, remove permitted development rights further still, so we design every wraparound on the assumption it will go through full householder planning.
Structural design for a wraparound extension
Because the new space turns a corner, the structural frame has to work as one continuous system rather than two independent extensions bolted together.
- A continuous steel or ring-beam frame carrying the roof around the internal corner where the rear and side elements meet
- A glazed roof lantern or rooflight strip often placed at the corner junction, where natural light reaches deepest into the combined plan
- Foundations for both the rear and side elements designed together, so they tie into the existing house consistently
- Bi-fold or sliding doors across the rear elevation, coordinated with the side glazing so the two elements read as one space
| Route | What it covers | Typical fee |
|---|---|---|
| Full planning permission | Required for almost all wraparound extensions given the combined footprint | Full Planning pack ~£1,600–£2,400 |
| Planning + Building Regulations (structural) | Combined pack including structural calculations for the L-shaped frame and drainage diversion | Planning + Building Regs pack ~£2,200–£3,850 |
| Rear extension alone (comparison) | Smaller single-storey addition, may qualify for permitted development | see Rear Extension Drawings, from £1,100 |
| Side return alone (comparison) | Widens the kitchen only, keeps garden depth unchanged | see Side Return Extension Drawings, from £1,400 |
Wraparound Extension Drawings in Custom House E16 — FAQs
How much does a wraparound extension cost to design in London?+
Does a wraparound extension always need planning permission?+
Do I need an architect for a wraparound extension?+
Will I need a Party Wall Agreement for a wraparound extension?+
How long does it take to get wraparound extension drawings?+
Do I need planning permission to extend a house in Custom House?+
Is Custom House in a conservation area?+
How much do planning and building-regulation drawings cost for a Custom House extension?+
How long does Newham Council take to decide?+
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