Basement Conversion Drawings in Ealing

Which postcode districts around Ealing do we cover for basement conversion work?

Every Ealing postcode district we draw in, the stock that dominates it and the authority that validates a basement conversion there. Ealing fees below are the statutory England rates for 2026, not basement conversion estimates.

Which Ealing neighbourhoods suit a basement conversion best?

Roof pitch, wall build-up and plot depth change every few Ealing streets, and each one changes what a basement conversion can achieve at that address.

• Ealing Broadway (W5) — a basement conversion in Ealing Broadway starts from edwardian villas, victorian terraces, and Ealing Broadway reads as Edwardian villas, Victorian terraces. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged in W5. Ealing Council assesses Ealing Broadway basement conversions against its own Ealing Broadway character guidance, and the location plan we draw for Ealing Broadway references Ealing Broadway station.
• Acton (W3) — a basement conversion in Acton starts from victorian and edwardian terraces, and Acton reads as Victorian and Edwardian terraces. Victorian cellars here convert without planning permission when the footprint and external appearance are unchanged in W3. Ealing Council assesses Acton basement conversions against its own Acton character guidance, and the location plan we draw for Acton references Acton Town.
• Hanwell (W7) — Edwardian villas, 1930s semi-detached defines Hanwell, where edwardian villas, 1930s semi-detached set what a basement conversion can do. Edwardian houses rarely have a usable cellar across W7. Any Hanwell basement conversion is validated by Ealing Council, with Hanwell viaduct the usual Hanwell reference point on the site plan.
• West Ealing (W13) — a basement conversion in West Ealing starts from edwardian terraces, and West Ealing reads as Edwardian terraces. Edwardian houses rarely have a usable cellar in W13. Ealing Council assesses West Ealing basement conversions against its own West Ealing character guidance, and the location plan we draw for West Ealing references West Ealing station.
• Southall (UB1, UB2) — Edwardian terraces, post-war estates defines Southall, where edwardian terraces, post-war flats set what a basement conversion can do. Edwardian houses rarely have a usable cellar across UB1. Any Southall basement conversion is validated by Ealing Council, with Southall Broadway the usual Southall reference point on the site plan.
• Greenford (UB6) — basement conversion work in Greenford means 1930s semi-detached. Greenford is 1930s semi-detached. 1930s houses were built without cellars throughout UB6. Ealing Council decides the Greenford application, and Greenford station anchors the Greenford location plan.
• Northolt (UB5) — basement conversion work in Northolt means 1930s semi-detached, post-war estates. Northolt is 1930s semi-detached, post-war estates. 1930s houses were built without cellars throughout UB5. Ealing Council decides the Northolt application, and Northolt Tube anchors the Northolt location plan.

Does Ealing planning policy restrict a basement conversion?

Conservation areas covering Ealing: Ealing Council runs 30, and Acton Green, Hanwell, Ealing Broadway are the ones Ealing owners meet most. A basement conversion inside a Ealing conservation area loses permitted development, so the Ealing submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Pitshanger a basement conversion is judged on the street elevation first.

Ealing and Article 4: Article 4 for HMOs in specific streets in Acton, Ealing and Southall. A basement conversion planned at a W3 address is checked against that direction first; Ealing Council publishes the Ealing extent, and the W3 line rarely follows the Ealing boundary you would expect.

Ealing housing stock: Victorian and Edwardian villas in Ealing central; 1930s semi-detached in Northolt and Hanwell; mansion blocks along main roads; Bedford Park is a listed Arts & Crafts garden suburb. Leafy outer-west London; Bedford Park conservation area has strict heritage controls; rest of borough generally permissive. Read that before choosing a basement conversion route in Ealing — construction, not postcode, sets what is achievable. Ealing Council charges £548 for a householder application and has 8 weeks to determine it.

Who decides a basement conversion on the edge of Ealing?

• Hounslow — the Hounslow boundary runs against Ealing, so a basement conversion a street from Ealing is decided by Hounslow Council instead. Hounslow runs 30 conservation areas across W3 and its neighbours, which is why basement conversions priced for Ealing are re-checked against Hounslow policy whenever the Ealing address sits on that edge.
• Hillingdon — adjoining Ealing, with 29 conservation areas centred on HA4. A basement conversion on the far side of the Ealing line is determined by Hillingdon Council, so the Ealing quote for basement conversions is checked against Hillingdon guidance before it is issued.
• Brent — the Brent boundary runs against Ealing, so a basement conversion a street from Ealing is decided by Brent Council instead. Brent runs 22 conservation areas across NW2 and its neighbours, which is why basement conversions priced for Ealing are re-checked against Brent policy whenever the Ealing address sits on that edge.
• Hammersmith and Fulham — adjoining Ealing, with 45 conservation areas centred on W6. A basement conversion on the far side of the Ealing line is determined by Hammersmith & Fulham Council, so the Ealing quote for basement conversions is checked against Hammersmith and Fulham guidance before it is issued.

Sources for this Ealing basement conversion page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.