Home / Conservation areas / Hertsmere Borough Council
East of EnglandConservation areas in Hertsmere Borough Council
16 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
Aldenham
Designated 1973 · ref. 2443
Rules & recordBushey Heath High Road
Designated 1990 · ref. 2446
Rules & recordBushey Heath The Lake
Designated 1998 · ref. 2445
Rules & recordBushey High Street
Designated 1973 · ref. 2444
Rules & recordBushey Melbourne Road
Designated 1973 · ref. 7981
Rules & recordElstree Village
Designated 1976 · ref. 2447
Rules & recordLetchmore Heath
Designated 1969 · ref. 2442
Rules & recordPatchetts Green and Delrow
Designated 1998 · ref. 2439
Rules & recordPotters Bar Darkes Lane (West)
Designated 2012 · ref. 10075
Rules & recordPotters Bar The Royds
Designated 2000 · ref. 2440
Rules & recordRadlett North
Designated 1988 · ref. 1523
Rules & recordRadlett South
Designated 1988 · ref. 2438
Rules & recordRidge
Designated 1978 · ref. 2437
Rules & recordRound Bush
Designated 1978 · ref. 2441
Rules & recordShenley Village
Designated 1969 · ref. 2435
Rules & recordSouth Mimms
Designated 1969 · ref. 2436
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.