Double Storey Extension Drawings in Ealing Broadway W5
Fixed-fee, MCIAT-chartered double storey extension drawings for Ealing Broadway (W5) homeowners — London Borough of Ealing validation and local constraints handled from the start.
Ealing Broadway (W5) is the heart of 'Queen of the Suburbs' Ealing, and the housing reflects it — substantial Victorian and Edwardian villas climbing the hill north of the Broadway, with mansion flats and larger subdivided houses nearer the station. The scale of these plots means loft conversions, rear extensions and outbuildings are common, but so is the conservation-area control that shapes them.
Three conservation areas meet across the district: Mount Park on the higher ground to the north, Ealing Common to the east and Ealing Green to the south. Which one a property falls in changes what is achievable on the roof and front elevation, so we establish the boundary and the borough's guidance before recommending a permitted-development or full-application route.
Planning in Ealing Broadway (W5): what to know before you apply
W5 carries no borough-wide Article 4 direction affecting typical householder work, so many Ealing Broadway houses retain permitted development rights for rear and loft projects — but the Mount Park, Ealing Common and Ealing Green conservation areas are the significant exceptions, and the generous villa plots mean extensions are judged closely against neighbouring building and garden lines. London Borough of Ealing does not publish an Article 4 schedule to the national open-data register, so we verify the current position with the council before advising.
Typical Ealing Broadway housing stock
Large late-Victorian and Edwardian villas and semi-detached houses on the hill north of the Broadway, many on generous plots, alongside Edwardian mansion flats and subdivided family houses closer to the station.
Streets we regularly draw for in Ealing Broadway
Mount Park Road · Castlebar Road · The Mall · Grange Road · Uxbridge Road
What W5 is actually built of
Measured from 461 classified residential buildings in W5, not from a description of the area.
Ealing Broadway W5 housing mix
Residential building form across the W5 postcode district, from 461 classified buildings.
| Attached on more than one side | 45% |
|---|---|
| Attached on one side | 42% |
| Detached | 12% |
| Median building footprint | 71 m² |
| Addresses per buildingAbove about 2 means flats and maisonettes dominate | 1.79 |
| Buildings classified | 461 |
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.
Double Storey Extension Drawings for Ealing Broadway (W5) homes: the package and the process
At first-floor level the drawings have to answer for daylight, privacy and massing. That means proposed elevations showing every new window with its position relative to the boundary, a section taken through the extension and the neighbouring building, and a roof form drawn to sit below the existing ridge rather than compete with it.
We draw the neighbouring property alongside your own, because the officer's assessment is comparative — the effect on their windows and outlook is the test. Setting the first floor in from the boundary, and showing that set-back as a dimension, resolves most objections before consultation begins.
At first floor the boundary relationship decides everything. A detached house has room to set the addition in on both sides; a semi has one shared wall and one clear flank; a mid-terrace can usually only go to the rear, where the effect on both neighbours has to be drawn.
Do I need planning permission for a double storey extension in London?
Almost always. Permitted development rights for two-storey extensions are far more restrictive than for single-storey work, particularly on how close the new structure can come to a boundary and how closely its roof pitch and eaves height must match the existing house, so most double storey projects are drawn and submitted as full householder planning applications rather than relying on permitted development.
Where the property sits in a conservation area or is subject to an Article 4 direction, any remaining permitted development allowance for a second storey is typically removed entirely, reinforcing the need for a full application. We check your property's status and your borough's design guidance before drawing.
How do councils control the impact of a double storey extension on neighbours?
Because a second storey introduces new windows and massing at first-floor level, London boroughs apply design guidance aimed specifically at protecting neighbouring light, privacy and outlook.
- The 45-degree rule, tested at neighbouring windows, to check the extension does not block an unreasonable amount of daylight
- A common design expectation that a two-storey side extension is set in roughly 1 metre from the shared boundary, rather than built hard against it
- A first floor commonly set back from the ground floor front elevation, so the upper storey reads as subordinate to the main house from the street
- Obscure or high-level glazing on flank walls facing directly into a neighbour's garden or windows, to limit overlooking
Matching the roofline and materials
Planning officers assess a double storey extension heavily on how convincingly it reads as part of the original house rather than an addition bolted onto the side. Our drawings match ridge height, roof pitch, eaves detail and brick or render finish to the existing building wherever the design brief allows, which is consistently one of the strongest factors in securing approval without delay or redesign. Where a subtly contrasting material is proposed instead — a different brick tone, or a zinc or slate roof against a tiled original — we set it out clearly on the elevations so the design intent reads as deliberate rather than a mismatch, which is how most London boroughs prefer a genuine design statement to be presented.
| Option | What it adds | Typical fee |
|---|---|---|
| Single-storey rear extension | A ground-floor kitchen-diner only, may qualify for permitted development | see Rear Extension Drawings, from £1,100 |
| Double storey side or rear extension | Two rooms across two floors, usually needs full planning | Full Planning pack ~£1,600–£2,400 |
| Double storey + Building Regulations (structural) | Combined pack including structural calculations for two-floor loads and foundations | Planning + Building Regs pack ~£2,200–£3,850 |
| Wraparound (rear + side return) | Combines two single-storey extensions into one L-shaped ground floor | see Wraparound Extension Drawings, from £2,200 |
Double Storey Extension Drawings in Ealing Broadway W5 — FAQs
How much does a double storey extension cost to design in London?+
Do I need planning permission to add a second storey?+
Will a double storey extension overlook my neighbour's garden?+
Do I need an architect for a double storey extension?+
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Do I need planning permission for a rear extension in Ealing?+
What extra control applies in Bedford Park?+
How long does Ealing Council take to decide a householder application?+
Can you help with a loft conversion on a 1930s Ealing semi?+
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