Home / Conservation areas / London Borough of Harrow
LondonConservation areas in London Borough of Harrow
31 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
Brookshill Drive and Grimsdyke Estate
Official record · ref. 174_HRW_CA29
Rules & recordHarrow on-the-Hill / Harrow Park
Official record · ref. 174_HRW_CA3
Rules & recordHarrow on-the-Hill / Harrow School
Official record · ref. 174_HRW_CA2
Rules & recordHarrow on-the-Hill / Mount Park Estate
Official record · ref. 174_HRW_CA7
Rules & recordHarrow on-the-Hill / Roxborough Park and The Grove
Official record · ref. 174_HRW_CA8
Rules & recordHarrow on-the-Hill / Roxeth Hill
Official record · ref. 174_HRW_CA1
Rules & recordHarrow on-the-Hill / South Hill Avenue
Official record · ref. 174_HRW_CA6
Rules & recordHarrow on-the-Hill / Sudbury Hill
Official record · ref. 174_HRW_CA5
Rules & recordHarrow on-the-Hill / Village
Official record · ref. 174_HRW_CA4
Rules & recordHarrow Weald
Official record · ref. 174_HRW_CA28
Rules & recordPinner / East End Farm
Official record · ref. 174_HRW_CA13
Rules & recordPinner / Eastcote Village
Official record · ref. 174_HRW_CA20
Rules & recordPinner / Moss Lane
Official record · ref. 174_HRW_CA12
Rules & recordPinner / Pinner High Street
Official record · ref. 174_HRW_CA11
Rules & recordPinner / Pinner Hill Estate
Official record · ref. 174_HRW_CA17
Rules & recordPinner / Pinner Road
Official record · ref. 174_HRW_CA21
Rules & recordPinner / Pinnerwood Farm
Official record · ref. 174_HRW_CA18
Rules & recordPinner / Pinnerwood Park Estate
Official record · ref. 174_HRW_CA16
Rules & recordPinner / Rayners Lane
Official record · ref. 174_HRW_CA19
Rules & recordPinner / Tookes Green
Official record · ref. 174_HRW_CA15
Rules & recordPinner / Waxwell Close
Official record · ref. 174_HRW_CA10
Rules & recordPinner / Waxwell Lane
Official record · ref. 174_HRW_CA9
Rules & recordPinner / West Towers
Official record · ref. 174_HRW_CA14
Rules & recordPinnerwood Park Estate Conservation Area PART 1
Official record · ref. COA00000162
Rules & recordStanmore and Edgware / Canons Park Estate
Official record · ref. 174_HRW_CA27
Rules & recordStanmore and Edgware / Edgware High Street
Official record · ref. 174_HRW_CA26
Rules & recordStanmore and Edgware / Kerry Avenue
Official record · ref. 174_HRW_CA25
Rules & recordStanmore and Edgware / Little Common
Official record · ref. 174_HRW_CA22
Rules & recordStanmore and Edgware / Old Church Lane
Official record · ref. 174_HRW_CA24
Rules & recordStanmore and Edgware / Stanmore Hill
Official record · ref. 174_HRW_CA23
Rules & recordWest Drive Conservation Area
Official record · ref. COA00000089
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.