Home / Conservation areas / London Borough of Hounslow
LondonConservation areas in London Borough of Hounslow
43 conservation areas and 3 Article 4 directions on the official register. If your property is in one, extensions, lofts, cladding, outbuildings and demolition follow stricter rules.
Conservation areas
Bedfont Green
Designated 1974 · ref. HSLCA06
Rules & recordBedford Park
Designated 1970 · ref. 1205
Rules & recordBedford Park (article 4)
Official record · ref. HSLCA04
Rules & recordChiswick High Road
Designated 2014 · ref. HSLCA28
Rules & recordChiswick House
Designated 1977 · ref. HSLCA09
Rules & recordCranford Village
Designated 1991 · ref. HSLCA16
Rules & recordFeltham Town Centre
Designated 1990 · ref. HSLCA14
Rules & recordGlebe Estate
Official record · ref. HSLCA29
Rules & recordGrand Union Canal & Boston Manor
Official record · ref. HSLCA21
Rules & recordGrand Union Canal and Boston Manor
Designated 2001 · ref. 1227
Rules & recordGrove Park
Designated 2002 · ref. HSLCA22
Rules & recordGunnersbury Park
Designated 1990 · ref. 1210
Rules & recordGunnersbury Park (article 4)
Official record · ref. HSLCA15
Rules & recordHanworth Park (ref. 1211)
Designated 1984 · ref. 1211
Rules & recordHanworth Park (ref. HSLCA10)
Official record · ref. HSLCA10
Rules & recordHeston Village (ref. 1212)
Designated 1974 · ref. 1212
Rules & recordHeston Village (ref. HSLCA07)
Official record · ref. HSLCA07
Rules & recordHounslow Cavalry Barracks
Designated 1992 · ref. HSLCA17
Rules & recordIsleworth Riverside (ref. 1215)
Designated 1972 · ref. 1215
Rules & recordIsleworth Riverside (ref. HSLCA05)
Official record · ref. HSLCA05
Rules & recordKew Bridge (ref. 1233)
Designated 2004 · ref. 1233
Rules & recordKew Bridge (ref. HSLCA26)
Official record · ref. HSLCA26
Rules & recordOld Chiswick (ref. 1216)
Designated 1969 · ref. 1216
Rules & recordOld Chiswick (ref. HSLCA03)
Official record · ref. HSLCA03
Rules & recordOsterley Park (ref. 1218)
Designated 1988 · ref. 1218
Rules & recordOsterley Park (ref. HSLCA12)
Official record · ref. HSLCA12
Rules & recordSpring Grove
Designated 2002 · ref. HSLCA23
Rules & recordSt Dunstan's (ref. 1234)
Designated 2008 · ref. 1234
Rules & recordSt Dunstan's (ref. HSLCA27)
Official record · ref. HSLCA27
Rules & recordSt Paul's Brentford
Designated 1989 · ref. 1220
Rules & recordSt Paul's Church
Designated 1992 · ref. HSLCA18
Rules & recordSt Paul's, Brentford
Official record · ref. HSLCA13
Rules & recordSt Stephen's
Designated 1987 · ref. HSLCA11
Rules & recordStamford Brook
Designated 1998 · ref. HSLCA19
Rules & recordStrand on the Green
Designated 1968 · ref. HSLCA01
Rules & recordThe Butts (ref. 1206)
Designated 1968 · ref. 1206
Rules & recordThe Butts (ref. HSLCA02)
Official record · ref. HSLCA02
Rules & recordThorney Hedge
Designated 2002 · ref. HSLCA24
Rules & recordTurnham Green (ref. 1225)
Designated 1975 · ref. 1225
Rules & recordTurnham Green (ref. HSLCA08)
Official record · ref. HSLCA08
Rules & recordWellesley Road (ref. 1232)
Designated 2002 · ref. 1232
Rules & recordWellesley Road (ref. HSLCA25)
Official record · ref. HSLCA25
Rules & recordWoodlands Grove
Designated 1999 · ref. HSLCA20
Rules & recordWhat a conservation area changes
Extensions
Side extensions, and rear extensions of more than one storey, are not permitted development — they need planning permission. Single-storey rear extensions keep their normal limits, but the Larger Home Extension prior-approval route is not available.
Lofts and roofs
Roof extensions such as dormers are not permitted development. Rooflights are usually fine if they don't project more than 15 cm.
Cladding
Cladding the outside of a house in stone, artificial stone, pebble dash, render, timber, plastic or tiles needs planning permission.
Outbuildings
Garden rooms, sheds and other outbuildings to the side of the house need planning permission.
Demolition
Demolishing a building larger than 115 m³ needs planning permission. Taking down a wall, gate or fence over 1 m high next to a road (or 2 m elsewhere) also needs permission.
Trees
You must give the council six weeks' notice before cutting down or pruning most trees (trunk over 7.5 cm across at 1.5 m high), even if they are not protected by a tree preservation order.
Article 4 directions
Councils can remove more permitted development rights — for example for windows, doors, porches or front boundaries — with an Article 4 direction. Check the council's list below.
Article 4 directions in London Borough of Hounslow
These remove some permitted development rights in the areas they cover — check whether one applies to your property before you rely on permitted development.
- Article 4(2) directions for Bedford Park and Gunnersbury Conservation areas (24 July 2001)
- Change of use or development that would result in new dwellings (Class MA/ZA) (22 April 2025)
- Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction (4 September 2023)
Conservation area and Article 4 data: planning.data.gov.uk. Contains public sector information licensed under the Open Government Licence v3.0. Always confirm boundaries and rules with the council before starting work. General information, not legal advice.