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Free 2026 London Planning ReportWraparound Extension Drawings in Hammersmith W6

Side-return extension drawings for a Victorian terrace in Hammersmith W6, London Borough of Hammersmith and Fulham
Hammersmith · W6 · Hammersmith & Fulham

Wraparound Extension Drawings in Hammersmith W6

Fixed-fee, MCIAT-chartered wraparound extension drawings for Hammersmith (W6) homeowners — London Borough of Hammersmith & Fulham validation and local constraints handled from the start.

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Hammersmith (W6) runs from the tight Victorian grid of Brackenbury Village up to the larger houses around Brook Green, and side-return and loft projects are the staple here. The Bradmore conservation area covers most of Brackenbury's streets, so what reads as a routine extension a few roads away is a conservation-area application within its boundary.

Brook Green adds a second, distinct context of larger period houses and stucco frontages under their own conservation-area control. We check which grid a Hammersmith property sits in — and where its boundary falls — before recommending a route, and prepare the drawings to the borough's design and validation standards.

Side-return extension drawings for a Victorian terrace in Hammersmith W6, London Borough of Hammersmith and Fulham
Isometric illustration of a Hammersmith W6 home wraparound extension drawings design
Proposed floor plan
Hammersmith W6

Planning in Hammersmith (W6): what to know before you apply

W6 sits across the Bradmore and Brook Green conservation areas, which cover much of the residential grid and remove permitted development rights on many streets, so extensions and loft conversions are assessed against the borough's conservation guidance. London Borough of Hammersmith and Fulham does not publish an Article 4 schedule to the national open-data register, so an empty entry there is not evidence of absence — we confirm the current directions and conservation boundary with the council before advising.

Typical Hammersmith housing stock

Tight grids of two- and three-storey Victorian terraces around Brackenbury Village, larger stucco-fronted and villa houses toward Brook Green, and Edwardian red-brick mansion flats on the main approaches.

Streets we regularly draw for in Hammersmith

Brackenbury Road · Aldensley Road · Hammersmith Grove · Brook Green · Goldhawk Road

Wraparound Extension Drawings for Hammersmith (W6) homes: the package and the process

Every wraparound extension drawings we prepare for an Hammersmith property is drawn to London Borough of Hammersmith & Fulham’s validation standards and tuned to the W6 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.

Wraparound extension planning routes
RouteWhat it coversTypical fee
Full planning permissionRequired for almost all wraparound extensions given the combined footprintFull Planning pack ~£1,600–£2,400
Planning + Building Regulations (structural)Combined pack including structural calculations for the L-shaped frame and drainage diversionPlanning + Building Regs pack ~£2,200–£3,850
Rear extension alone (comparison)Smaller single-storey addition, may qualify for permitted developmentsee Rear Extension Drawings, from £1,100
Side return alone (comparison)Widens the kitchen only, keeps garden depth unchangedsee Side Return Extension Drawings, from £1,400
FAQ

Wraparound Extension Drawings in Hammersmith W6 — FAQs

How much does a wraparound extension cost to design in London?+
Wraparound extension drawings start from £2,200, covering full planning permission and structural design for the combined frame. Adding building regulations and construction detail brings the package to the Planning + Building Regs band, up to around £3,850, fixed and agreed upfront.
Does a wraparound extension always need planning permission?+
In almost every case, yes. The combined depth and width of a rear and side return together generally exceed permitted development limits, so we design wraparound projects on the assumption a full householder planning application is needed.
Do I need an architect for a wraparound extension?+
No. DrawingsDirect is an MCIAT-chartered architectural technologist practice, producing the same council-accepted drawings and structural coordination as an architect, for a fixed fee typically around 30% lower, with one team responsible for both the rear and side return elements rather than two separately briefed designers.
Will I need a Party Wall Agreement for a wraparound extension?+
Usually, because the side return element of a wraparound typically builds against or close to the boundary with the neighbouring property. We prepare the drawings your Party Wall surveyor needs alongside the planning application, timed so the notice period runs in parallel with the council's determination rather than adding to your overall timescale.
How long does it take to get wraparound extension drawings?+
Drawings are typically ready around 7 days from survey. A householder planning application then has a statutory 8-week determination period once submitted.
Do I need planning permission for a side-return extension in Hammersmith & Fulham?+
On the Victorian and Edwardian terraces of Fulham and Shepherd's Bush a single-storey side-return or rear extension can fall within permitted development, so a full application isn't always required. Conservation areas across Fulham, Brackenbury and Ravenscourt Park, and the Peterborough Estate, restrict this. We check your street's designation first and can confirm permitted development with a Lawful Development Certificate.
Will I need a Basement Impact Assessment for a basement in Hammersmith & Fulham?+
Likely, yes. The council applies a basement policy requiring a basement impact assessment for below-ground works, covering structural stability, drainage and groundwater. Basement extensions are common on these terraces, so if you are considering one we flag the requirement early and coordinate the structural input so the application is complete when submitted.
What is special about the Peterborough Estate 'Lion houses'?+
The Peterborough Estate's distinctive red-brick 'Lion houses' carry strong conservation control over their external character, so alterations are expected to respect the estate's materials and detailing. We design to that character and prepare a full householder application where permitted development doesn't apply, which is the reliable route to approval there.
How long does Hammersmith & Fulham take to decide?+
The council determines most householder applications within the statutory eight-week period once validated; basement and conservation cases can involve additional consultation. Because the terraces are party-wall-sensitive, we prepare submissions to the borough's residential extension and basement guidance to avoid the drawing queries that cause most delays.
How much do planning drawings cost in Hammersmith & Fulham?+
We agree a fixed fee before we start, typically around 30% below an architect's fee for the same council-accepted drawings, with free redraws until the council approves. A side-return, a loft and a basement differ in complexity, so we quote once we have seen your address and project rather than by the hour.
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