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Free 2026 London Planning ReportNew Build Drawings in West Wickham BR4

Single-storey rear extension onto a deep garden behind an interwar West Wickham BR4 semi-detached house in Bromley
West Wickham · BR4 · Bromley

New Build Drawings in West Wickham BR4

Fixed-fee, MCIAT-chartered new build drawings for West Wickham (BR4) homeowners — London Borough of Bromley validation and local constraints handled from the start.

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West Wickham (BR4) is a classic interwar railway suburb: once Kent farmland, it was laid out for London commuters after the station opened, and its character today is overwhelmingly 1920s–1930s semi-detached and detached houses on generous, planned plots. Almost every householder project here is a rear extension, side infill or loft on one of those suburban houses, so drawings need to sit comfortably within wide, evenly spaced streets.

There is no conservation area covering West Wickham — that is a genuine, verified fact, not an omission. Its planning character is instead shaped by the consistency of the interwar suburb: regular building lines, front-garden setbacks and the spacing between houses, all read against Bromley's householder design expectations. We treat that suburban grain, rather than a conservation designation, as the reference point when we design an extension.

Because the plots are deep and the layout is so regular, demand for rear extensions and loft conversions is steady along roads like Wickham Chase, Pickhurst Rise and Red Lodge Road. We check each property's permitted-development position against Bromley's borough-wide controls first, then prepare drawings that either stay within permitted development or are ready to validate as a full householder application.

Single-storey rear extension onto a deep garden behind an interwar West Wickham BR4 semi-detached house in Bromley
Isometric illustration of a West Wickham BR4 home new build drawings design
Proposed floor plan
West Wickham BR4

Planning in West Wickham (BR4): what to know before you apply

Bromley assesses West Wickham extensions against the settled interwar suburban pattern, so matching original brick, render and roof form and respecting the gaps between houses matters more than on a mixed-typology road. There is no conservation area and no local Article 4 direction, so many houses retain permitted development rights for rear and loft work — but two-storey side additions, roof changes and neighbour amenity are the points a householder application is judged on.

Typical West Wickham housing stock

Predominantly 1920s–1930s semi-detached and detached houses on wide, planned suburban roads, with some later postwar infill. The generous plots and deep rear gardens that came with garden-suburb-influenced planning are exactly what make rear extensions and loft conversions such common projects here.

Streets we regularly draw for in West Wickham

Wickham Chase · The Avenue · The Drive · Pickhurst Rise · Red Lodge Road · Langley Way · Wickham Court Road · Corkscrew Hill · Ash Road · Bushey Road · Links View Road · Manor Park Road

What BR4 is actually built of

Measured from 287 classified residential buildings in BR4, not from a description of the area.

West Wickham BR4 housing mix

Residential building form across the BR4 postcode district, from 287 classified buildings.

Attached on more than one side23%
Attached on one side59%
Detached17%
Median building footprint84 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate1.06
Buildings classified287

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.

New Build Drawings for West Wickham (BR4) homes: the package and the process

A new dwelling is a full application rather than a householder one, and the drawing set reflects that: site layout with levels and boundaries, floor plans and elevations for the new building, sections showing how it sits in the ground, and street-scene elevations placing it against what is already there.

Two packages follow the approval — the planning set and the construction set — and they have to stay in step. Foundation design, drainage strategy, thermal performance and fire strategy are drawn for Building Control against the same geometry that was granted permission, so the built house matches the approved one.

An infill plot is designed against its neighbours. Plot width, the building line either side, and the ridge heights next door set what the new house can be — and on a tight urban site those constraints usually shape the design more than the brief does.

Is my plot suitable for a new build in London?

A feasibility assessment looks at plot size and shape, access, existing boundary conditions, relevant planning policy for the borough, and the likely impact of a new dwelling on neighbouring properties before any design work begins. Infill plots — a gap between existing buildings on a street — and backland plots — a garden or yard site behind existing houses, reached by a shared access — each raise different issues: infill schemes are usually judged on how well they match the scale, spacing and character of the street, while backland schemes are judged heavily on overlooking, garden loss for neighbours, and whether the access arrangement is acceptable. A feasibility study gives an honest view of whether a scheme is likely to succeed before you commit to full drawings.

What does pre-application advice add to a new build project?

Pre-application advice is a formal, paid process most London boroughs offer, where planning officers give written feedback on a proposed scheme before a full application is submitted. For a new build — where the principle of development itself is often the main issue, not just the design details — this feedback can be invaluable: it surfaces concerns around density, massing, daylight and sunlight or heritage context early enough to be addressed in the drawings, rather than discovered for the first time as a refusal reason months into a full application. We prepare and submit pre-application enquiries as part of the new build service where it is likely to strengthen the eventual planning application.

How do daylight, sunlight and overlooking affect a new build design?

London boroughs assess new dwellings against their effect on the daylight and sunlight reaching neighbouring homes and gardens, commonly using the 45-degree rule as an initial check on a proposal's massing and position relative to neighbouring windows, alongside more detailed daylight and sunlight assessment on sensitive sites. Overlooking and loss of privacy from new windows, upper floors or roof terraces are assessed similarly, and often shape decisions on window placement, floor-to-floor heights and the overall footprint and massing of the new building. Designing with these constraints from the earliest sketch stage, rather than adjusting for them after a refusal, is one of the main advantages of instructing feasibility and pre-application work before a full planning set.

New build project stages
StageWhat it establishesTypical fee guide
FeasibilityWhether the plot can support a new dwelling and the likely constraintsQuoted individually, from within the £2,500 new build fee
Pre-application adviceWritten borough feedback on the scheme before a full applicationQuoted individually alongside the planning fee
Full planning drawingsThe complete drawing set submitted for planning permissionFrom £2,500
Building regs and structuralConstruction-ready drawings and calculations for buildingFrom £2,200–£3,850, quoted once planning is settled
Sheet from a new build drawings package drawn for a West Wickham property in BR4, showing the existing and proposed arrangement at scale
A sheet from the new build drawings package we submit to London Borough of Bromley for West Wickham (BR4) properties.
FAQ

New Build Drawings in West Wickham BR4 — FAQs

How much do new build drawings cost in London?+
New build drawings start from £2,500 for feasibility and a full planning drawing set on a straightforward infill or backland plot, with building regulations and structural drawings quoted separately once the planning design is agreed.
Can any garden or backland plot be built on in London?+
Not necessarily — backland and garden plots are assessed on access, overlooking, loss of garden amenity for neighbours and borough policy, and a feasibility assessment gives an honest early view of whether a scheme is likely to be supported.
Do I need pre-application advice before a full new build application?+
It is not mandatory, but for a new dwelling — where the principle of development is often the main issue — pre-application advice can surface concerns early enough to address them in the design, reducing the risk of refusal.
Do you handle building regulations and structural drawings for a new build, or only planning?+
Both — the full new build service covers planning, building regulations and structural drawings from one in-house team, so the design stays consistent from feasibility through to construction-ready drawings.
How long does a new build project take from feasibility to planning permission?+
This varies with site complexity and whether pre-application advice is sought, but a full planning application is determined within the statutory period the borough applies to the application type, once submitted via the Planning Portal.
Do I need planning permission to extend a house in West Wickham?+
Not always. Many West Wickham houses retain permitted development rights, so a single-storey rear extension or a rear loft conversion can often proceed without a full planning application. Because the interwar plots and building lines are regular, we check your property's limits against Bromley's controls first and prepare a full householder application where the project — such as a two-storey side extension — goes beyond permitted development.
Is West Wickham in a conservation area?+
No. There is no conservation area covering West Wickham. Its planning character is shaped instead by the consistency of the interwar railway suburb — the regular building lines, front-garden setbacks and gaps between houses — and by Bromley's householder design expectations, which favour keeping that spacious suburban grain when you extend.
How much do planning and building-regulation drawings cost for a West Wickham extension?+
We work to fixed fees agreed before we start, with a typical turnaround of around seven days for a standard rear extension or loft on a West Wickham house. As a chartered architectural technologist practice we produce the same council-accepted planning and building-regulation drawings as an architect, usually for a lower fee, and include free redraws until your application is approved.
How long does Bromley Council take to decide?+
Bromley determines most householder applications within the statutory eight-week period once validated. As London's largest borough by area, its casework spans suburban semis to green-belt properties, so a complete, correctly scaled submission is the best way to avoid a validation query and keep to that timescale.
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