Which Hillingdon postcodes does this permitted development scheme service cover?
Every Hillingdon postcode district we draw in, the stock that dominates
it and the authority that validates a permitted development scheme there. Hillingdon fees below are the
statutory England rates for 2026, not permitted development scheme estimates.
| Postcode | Area | Dominant stock | What it means for a permitted development scheme |
|---|
| HA5 | Pinner / Eastcote | Tudor fragments, Edwardian villas, 1930s semi-detached | Pinner / Eastcote is split at HA5. Either Hillingdon Council or Harrow Council can determine a permitted development scheme here, so the HA5 address is checked against both policies maps first. |
| HA6 | Northwood | 1930s detached, Edwardian villas | Northwood sits wholly inside HA6, so Hillingdon Council validates every permitted development scheme submitted from an HA6 address. |
| UB3 | Hayes / Harlington | 1930s semi-detached, post-war estates | Hayes / Harlington sits wholly inside UB3, so Hillingdon Council validates every permitted development scheme submitted from an UB3 address. |
| UB4 | Hayes / Yeading | 1930s semi-detached, post-war estates | A permitted development scheme at an UB4 address in Hayes / Yeading is determined by Hillingdon Council under its own Local Plan policies for Hayes / Yeading. |
| UB7 | West Drayton / Sipson / Harmondsworth | 1930s semi-detached, post-war | A permitted development scheme at an UB7 address in West Drayton / Sipson / Harmondsworth is determined by Hillingdon Council under its own Local Plan policies for West Drayton / Sipson / Harmondsworth. |
| UB8 | Uxbridge / Cowley | Georgian fragments, 1930s semi-detached, post-war flats | UB8 covers Uxbridge / Cowley only; Hillingdon Council handles the permitted development scheme. |
| UB9 | Denham / Harefield | Tudor and Georgian fragments, 1930s semi-detached | Permitted development rights come from national legislation, but the article 4 directions that withdraw them are local — and UB9 has two local authorities. Harefield's rights are Hillingdon's to restrict; Denham's are Buckinghamshire Council's, because Denham is not in London. Read the article 4 register held by the authority your address belongs to, not the one the postcode looks like it belongs to. |
| UB10 | Hillingdon / Ickenham | 1930s semi-detached, Tudor fragments | UB10 covers Hillingdon / Ickenham only; Hillingdon Council handles the permitted development scheme. |
Which Hillingdon neighbourhoods suit a permitted development scheme best?
Roof pitch, wall build-up and plot depth change every few Hillingdon
streets, and each one changes what a permitted development scheme can achieve at that address.
- Harefield (UB9) — a permitted development scheme in Harefield starts from tudor and georgian fragments, 1930s semi-detached, and Harefield reads as village conservation, rural fringe. Applications on Georgian stock here almost always need a heritage statement alongside the drawings in UB9. Hillingdon Council assesses Harefield permitted development schemes against its own Harefield character guidance, and the location plan we draw for Harefield references Harefield Hospital.
- Yiewsley (UB7) — a permitted development scheme in Yiewsley starts from 1930s semi-detached, and Yiewsley reads as 1930s semi-detached. On these 1930s semis the prior approval route often replaces a full application in UB7. Hillingdon Council assesses Yiewsley permitted development schemes against its own Yiewsley character guidance, and the location plan we draw for Yiewsley references Yiewsley High Street.
- Eastcote (HA5) — a permitted development scheme in Eastcote starts from 1930s semi-detached, and Eastcote reads as 1930s semi-detached. On these 1930s semis the prior approval route often replaces a full application in HA5. Hillingdon Council assesses Eastcote permitted development schemes against its own Eastcote character guidance, and the location plan we draw for Eastcote references Eastcote Tube.
- Hillingdon (UB10) — permitted development scheme work in Hillingdon means 1930s semi-detached. Hillingdon is 1930s semi-detached, post-war. On these 1930s semis the prior approval route often replaces a full application throughout UB10. Hillingdon Council decides the Hillingdon application, and Hillingdon Tube anchors the Hillingdon location plan.
- Uxbridge (UB8) — a permitted development scheme in Uxbridge starts from georgian fragments, 1930s semi-detached, post-war flats, and Uxbridge reads as Georgian centre, 1930s residential. Applications on Georgian stock here almost always need a heritage statement alongside the drawings in UB8. Hillingdon Council assesses Uxbridge permitted development schemes against its own Uxbridge character guidance, and the location plan we draw for Uxbridge references Uxbridge High Street.
- Ruislip (HA4) — 1930s semi-detached, Tudor fragments defines Ruislip, where 1930s semi-detached, tudor cottages set what a permitted development scheme can do. On these 1930s semis the prior approval route often replaces a full application across HA4. Any Ruislip permitted development scheme is validated by Hillingdon Council, with Ruislip Lido the usual Ruislip reference point on the site plan.
- Northwood (HA6) — permitted development scheme work in Northwood means 1930s detached, edwardian villas. Northwood is 1930s detached and semi-detached. Edwardian houses here typically need the same householder set plus a roof plan where a dormer is proposed throughout HA6. Hillingdon Council decides the Northwood application, and Northwood Hills anchors the Northwood location plan.
Does Hillingdon planning policy restrict a permitted development scheme?
Conservation areas covering Hillingdon: Hillingdon Council runs 29, and Ickenham, Uxbridge, Ruislip Village are the ones Hillingdon owners meet most. A permitted development scheme inside a Hillingdon conservation area loses permitted development, so the Hillingdon submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Uxbridge a permitted development scheme is judged on the street elevation first.
No blanket Article 4 over Hillingdon: Hillingdon Council has not withdrawn permitted development across Hillingdon, so a permitted development scheme outside a Hillingdon conservation area usually keeps it. The £274 Lawful Development Certificate is still the document a HA4 owner wants on file.
What Hillingdon is built from: 1930s semi-detached dominates; Metropolitan Green Belt covers much of north Hillingdon; Victorian cottages in Uxbridge and Ruislip villages; post-war housing near Heathrow. Largest outer west London borough; significant Green Belt; Heathrow noise contours affect planning decisions in Harmondsworth and Sipson. That mix decides the permitted development scheme route in Hillingdon more than the postcode does.
Which neighbouring authorities border Hillingdon?
- Harrow — cross the Hillingdon boundary and Harrow Council takes the permitted development scheme instead, applying 29 conservation areas of its own around HA1. We re-price permitted development schemes at the Hillingdon edge because Harrow policy and Hillingdon policy rarely align on permitted development scheme depth.
- Ealing — cross the Hillingdon boundary and Ealing Council takes the permitted development scheme instead, applying 30 conservation areas of its own around W3. We re-price permitted development schemes at the Hillingdon edge because Ealing policy and Hillingdon policy rarely align on permitted development scheme depth.
- Hounslow — adjoining Hillingdon, with 30 conservation areas centred on W3. A permitted development scheme on the far side of the Hillingdon line is determined by Hounslow Council, so the Hillingdon quote for permitted development schemes is checked against Hounslow guidance before it is issued.
Sources for this Hillingdon permitted development scheme 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.
