By Borough
HMO Conversion Drawings by London Council
Borough-by-borough guidance on hmo conversion drawings — local conservation areas, Article 4 directions and validation quirks for each council.
Ealing
London Borough of EalingWandsworth
London Borough of WandsworthBromley
London Borough of BromleyRichmond
London Borough of Richmond upon ThamesIslington
London Borough of IslingtonLambeth
London Borough of LambethWaltham Forest
London Borough of Waltham ForestKensington & Chelsea
Royal Borough of Kensington and ChelseaWestminster
Westminster City CouncilGreenwich
Royal Borough of GreenwichLewisham
London Borough of LewishamCroydon
Croydon CouncilRedbridge
London Borough of RedbridgeHounslow
London Borough of HounslowMerton
London Borough of MertonSutton
London Borough of SuttonBrent
London Borough of BrentNewham
London Borough of NewhamHavering
London Borough of HaveringBexley
London Borough of BexleyHillingdon
London Borough of HillingdonBarking & Dagenham
London Borough of Barking and Dagenham
London Borough of EalingWandsworth
London Borough of WandsworthBromley
London Borough of BromleyRichmond
London Borough of Richmond upon ThamesIslington
London Borough of IslingtonLambeth
London Borough of LambethWaltham Forest
London Borough of Waltham ForestKensington & Chelsea
Royal Borough of Kensington and ChelseaWestminster
Westminster City CouncilGreenwich
Royal Borough of GreenwichLewisham
London Borough of LewishamCroydon
Croydon CouncilRedbridge
London Borough of RedbridgeHounslow
London Borough of HounslowMerton
London Borough of MertonSutton
London Borough of SuttonBrent
London Borough of BrentNewham
London Borough of NewhamHavering
London Borough of HaveringBexley
London Borough of BexleyHillingdon
London Borough of HillingdonBarking & Dagenham
London Borough of Barking and Dagenham
HMO Conversion Drawings in every borough and neighbourhood
Barnet
Harrow
Haringey
Hammersmith & Fulham
Enfield
Tower Hamlets
HMO Conversion Drawings guides that apply in every borough
These are the same in all 33 councils, so they are worth reading once rather than borough by borough.