Which Park Royal postcodes does this house extensions service cover?
Every Park Royal postcode district we draw in, the stock that dominates
it and the authority that validates a house extensions there. Park Royal fees below are the
statutory England rates for 2026, not house extensions estimates.
| Postcode | Area | Dominant stock | What it means for a house extensions |
|---|
| NW10 | Willesden / Harlesden / Kensal Green | Modern apartments, post-war estates | Willesden / Harlesden / Kensal Green is split at NW10. Either Brent Council or Ealing Council can determine a house extensions here, so the NW10 address is checked against both policies maps first. |
| W5 | Ealing Broadway | Edwardian villas, Victorian terraces | Neighbouring Ealing Broadway, where house extensions work is handled by the same Ealing Council case officers. |
| W3 | Acton | Victorian and Edwardian terraces | Neighbouring Acton, where house extensions work is handled by the same Ealing Council case officers. |
| W7 | Hanwell | Edwardian villas, 1930s semi-detached | Neighbouring Hanwell, where house extensions work is handled by the same Ealing Council case officers. |
| W13 | West Ealing | Edwardian terraces | Neighbouring West Ealing, where house extensions work is handled by the same Ealing Council case officers. |
| UB1 | Southall | Edwardian terraces, post-war flats | Neighbouring Southall, where house extensions work is handled by the same Ealing Council case officers. |
| UB6 | Greenford | 1930s semi-detached | Neighbouring Greenford, where house extensions work is handled by the same Ealing Council case officers. |
| UB5 | Northolt | 1930s semi-detached, post-war estates | Neighbouring Northolt, where house extensions work is handled by the same Ealing Council case officers. |
| W4 | Bedford Park | Arts & Crafts villas (listed) | Neighbouring Bedford Park, where house extensions work is handled by the same Ealing Council case officers. |
| W5 | Pitshanger | Edwardian villas | Neighbouring Pitshanger, where house extensions work is handled by the same Ealing Council case officers. |
What changes about a house extensions in each part of Park Royal?
Roof pitch, wall build-up and plot depth change every few Park Royal
streets, and each one changes what a house extensions can achieve at that address.
- Park Royal (NW10) — industrial fringe, new residential defines Park Royal, where modern apartments, post-war estates set what a house extensions can do. Post-war houses on these estates often sit under an estate management scheme across NW10. Any Park Royal house extensions is validated by Ealing Council, with Park Royal station the usual Park Royal reference point on the site plan.
- Near Park Royal: Greenford (UB6) — 1930s semi-detached defines Greenford, where 1930s semi-detached set what a house extensions can do. 1930s semis here have the deepest rear gardens in the area across UB6. Any Greenford house extensions is validated by Ealing Council, with Greenford station the usual Greenford reference point on the site plan.
- Near Park Royal: Northolt (UB5) — a house extensions in Northolt starts from 1930s semi-detached, post-war estates, and Northolt reads as 1930s semi-detached, post-war estates. 1930s semis here have the deepest rear gardens in the area in UB5. Ealing Council assesses Northolt house extensions against its own Northolt character guidance, and the location plan we draw for Northolt references Northolt Tube.
- Near Park Royal: Bedford Park (W4) — a house extensions in Bedford Park starts from arts & crafts villas (listed), and Bedford Park reads as Arts & Crafts garden suburb, conservation. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage in W4. Ealing Council assesses Bedford Park house extensions against its own Bedford Park character guidance, and the location plan we draw for Bedford Park references Bedford Park Estate.
- Near Park Royal: Pitshanger (W5) — Edwardian conservation area defines Pitshanger, where edwardian villas set what a house extensions can do. Edwardian plots here are wider across W5. Any Pitshanger house extensions is validated by Ealing Council, with Pitshanger Lane the usual Pitshanger reference point on the site plan.
- Near Park Royal: Ealing Broadway (W5) — a house extensions in Ealing Broadway starts from edwardian villas, victorian terraces, and Ealing Broadway reads as Edwardian villas, Victorian terraces. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage in W5. Ealing Council assesses Ealing Broadway house extensions against its own Ealing Broadway character guidance, and the location plan we draw for Ealing Broadway references Ealing Broadway station.
- Near Park Royal: Acton (W3) — Victorian and Edwardian terraces defines Acton, where victorian and edwardian terraces set what a house extensions can do. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage across W3. Any Acton house extensions is validated by Ealing Council, with Acton Town the usual Acton reference point on the site plan.
How do conservation areas and Article 4 affect a house extensions in Park Royal?
How designation changes a Park Royal house extensions: Ealing Council maintains 30 conservation areas, including Hanwell, Ealing Broadway, Pitshanger. Inside any of them a Park Royal house extensions cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Hanwell sets the tone for Park Royal casework.
Article 4 and your Park Royal house extensions: Article 4 for HMOs in specific streets in Acton, Ealing and Southall. At a NW10 address that matters twice over, because Ealing Council applies the direction unevenly across Park Royal — we read the Park Royal policies map for the exact NW10 address before quoting house extensions.
What Park Royal is built from: 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. That mix decides the house extensions route in Park Royal more than the postcode does.
What happens if a Park Royal property sits on a boundary?
- Hounslow — adjoining Park Royal, with 30 conservation areas centred on W3. A house extensions on the far side of the Park Royal line is determined by Hounslow Council, so the Park Royal quote for house extensions is checked against Hounslow guidance before it is issued.
- Hillingdon — adjoining Park Royal, with 29 conservation areas centred on HA4. A house extensions on the far side of the Park Royal line is determined by Hillingdon Council, so the Park Royal quote for house extensions is checked against Hillingdon guidance before it is issued.
- Brent — adjoining Park Royal, with 22 conservation areas centred on NW2. A house extensions on the far side of the Park Royal line is determined by Brent Council, so the Park Royal quote for house extensions is checked against Brent guidance before it is issued.
- Hammersmith and Fulham — cross the Park Royal boundary and Hammersmith & Fulham Council takes the house extensions instead, applying 45 conservation areas of its own around W6. We re-price house extensions at the Park Royal edge because Hammersmith and Fulham policy and Ealing policy rarely align on house extensions depth.
Sources for this Park Royal house extensions 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.
