Wraparound Extension Drawings in Kilburn NW6
Fixed-fee, MCIAT-chartered wraparound extension drawings for Kilburn (NW6) homeowners — London Borough of Brent validation and local constraints handled from the start.
Kilburn (NW6) straddles a borough boundary at the High Road, and the Brent side is where the North Kilburn conservation area sits — late-Victorian terraces and semis on the streets running off the High Road and Willesden Lane. Brent has attached an Article 4 direction to that conservation area.
The North Kilburn Article 4 direction removes permitted development rights across the conservation area, so rear and roof projects on those streets need a full planning application. Brent's separate HMO Article 4 direction removes the permitted change to a small house in multiple occupation across the borough — directly relevant in NW6, where the large Victorian houses have long been subdivided and HMO conversion is a common intent. The scale of existing flat conversion is itself a constraint: flats have no permitted development rights at all, and leasehold consent sits alongside planning. We confirm the borough, the conservation-area boundary and the tenure of an NW6 address before drawing to Brent's guidance.
Planning in Kilburn (NW6): what to know before you apply
NW6 carries Brent's North Kilburn Article 4 direction, which removes permitted development rights across the North Kilburn conservation area — rear and loft projects there need a full application. Brent's HMO Article 4 direction separately removes the permitted change to small houses in multiple occupation, so NW6 HMO conversions require planning permission. Note that Kilburn straddles a borough boundary at the High Road, so confirming the correct council for an address is the first step; and the district's many converted flats have no permitted development rights regardless.
Typical Kilburn housing stock
Late-Victorian terraces and semi-detached houses on the streets off the High Road and Willesden Lane, many long ago converted into flats, with Edwardian and interwar stock toward Salusbury Road.
Streets we regularly draw for in Kilburn
Kilburn High Road · Willesden Lane · Brondesbury Road · Salusbury Road
Wraparound Extension Drawings for Kilburn (NW6) homes: the package and the process
Every wraparound extension drawings we prepare for an Kilburn property is drawn to London Borough of Brent’s validation standards and tuned to the NW6 constraints above. Here is what the drawing package covers and how the process runs from first survey to approval.
A wraparound extension is what happens when a rear extension and a side return are designed together rather than as two separate projects: the new build wraps around the back corner of the house, turning a galley kitchen and a small rear room into one continuous kitchen, dining and living space running the full width of the plot. It is the most ambitious single-storey option most London terraces and semi-detached houses have, and because it reshapes almost the entire ground floor, it needs careful structural and drainage planning as well as a confident planning application.
DrawingsDirect draws wraparound extensions for full planning and building regulations, with structural calculations for the L-shaped frame and any drainage diversion produced in-house by our MCIAT-chartered team, on a fixed fee. If your project is a single-storey rear addition or a side infill on its own, see our Rear Extension and Side Return Extension pages; if you also want a second storey, see Double Storey Extension Drawings.
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.
| 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 Kilburn NW6 — 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 for a side-return extension in Brent?+
What does Brent's borough-wide HMO Article 4 direction affect?+
Is a hip-to-gable loft conversion allowed on my Brent semi?+
How long does Brent Council take to decide?+
How much do planning drawings cost in Brent?+
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