Home / Conservation areas / Three Rivers District Council
East of EnglandConservation areas in Three Rivers District Council
19 conservation areas and 0 Article 4 directions on the official register. If your property is in one, extensions, lofts, cladding, outbuildings and demolition follow stricter rules.
Conservation areas
Abbots Langley
Official record · ref. 8984
Rules & recordBatchworth Heath
Designated 1994 · ref. 8985
Rules & recordChorleywood Common
Designated 1976 · ref. 8987
Rules & recordChorleywood, Station Estate
Designated 1990 · ref. 8988
Rules & recordCoppermill Lock
Official record · ref. THE_342_CA_5
Rules & recordCroxley Green
Designated 1980 · ref. 8990
Rules & recordCroxley Green, Dickinson Square
Designated 1994 · ref. 8991
Rules & recordFrith Wood
Designated 2007 · ref. 8992
Rules & recordGrove Mill
Designated 1973 · ref. 8993
Rules & recordHeronsgate
Designated 1993 · ref. 8994
Rules & recordHunton Bridge
Designated 1984 · ref. 8995
Rules & recordLoudwater
Designated 1998 · ref. 8996
Rules & recordMoor Park Estate
Designated 1995 · ref. 8999
Rules & recordOuter Loudwater
Designated 2006 · ref. 8997
Rules & recordOxhey Hall
Designated 2006 · ref. 8998
Rules & recordRickmansworth Town Centre
Designated 1973 · ref. 9002
Rules & recordRickmansworth, Cedars Avenue
Designated 2006 · ref. 8986
Rules & recordRickmansworth, Nightingale Road
Designated 1998 · ref. 9000
Rules & recordRickmansworth, Upper Nightingale Road
Designated 2006 · ref. 9001
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.
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.