MCIAT chartered extension plans across all 33 London boroughs and 287 neighbourhoods. 98% first-time approval. Free measured survey.
House Extension Drawings in London are prepared for extension design and consent and submitted to one of 33 local planning authorities, each with its own Local Plan, Article 4 position and conservation-area register.
Every page below carries its own local dataset — planning authority, Article 4 status, conservation-area count, dominant housing stock and postcode districts. Pick your area for the local detail.
Barking · Dagenham · Chadwell Heath · Becontree · Marks Gate
Barking and Dagenham Council · 9 conservation areas · Article 4: no
Finchley · Hampstead Garden Suburb · Golders Green · Muswell Hill · Hendon · Mill Hill · Edgware · Colindale · Whetstone · East Finchley · Barnet
Barnet Council · 20 conservation areas · Article 4: no
Bexleyheath · Sidcup · Welling · Erith · Crayford · Old Bexley · Belvedere · Barnehurst
Bexley Council · 16 conservation areas · Article 4: no
Wembley · Kilburn · Queen's Park · Harlesden · Mapesbury · Kensal Green · Willesden · Neasden · Cricklewood · Sudbury
Brent Council · 22 conservation areas · Article 4: yes
Bromley · Beckenham · Chislehurst · Bickley · Orpington · Petts Wood · West Wickham · Biggin Hill · Keston · Penge
Bromley Council · 48 conservation areas · Article 4: no
Camden Town · Hampstead · Primrose Hill · Kentish Town · Belsize Park · Bloomsbury · Fitzrovia · King's Cross · Highgate · Swiss Cottage · Gospel Oak · West Hampstead
Camden Council · 40 conservation areas · Article 4: yes
Barbican · Smithfield · Fleet Street · St Paul's
City of London Corporation · 27 conservation areas · Article 4: yes
Croydon · Crystal Palace · Upper Norwood · South Norwood · Thornton Heath · Purley · Coulsdon · Addiscombe · Shirley · Selhurst
Croydon Council · 24 conservation areas · Article 4: no
Ealing Broadway · Acton · Hanwell · West Ealing · Southall · Greenford · Northolt · Bedford Park · Pitshanger · Park Royal
Ealing Council · 30 conservation areas · Article 4: yes
Enfield Town · Palmers Green · Winchmore Hill · Southgate · Edmonton · Ponders End · Bush Hill Park · Oakwood
Enfield Council · 22 conservation areas · Article 4: no
Greenwich · Charlton · Woolwich · Eltham · Blackheath (Greenwich) · Thamesmead · Kidbrooke · New Eltham
Greenwich Council · 20 conservation areas · Article 4: no
Dalston · Stoke Newington · Shoreditch · Hackney Central · London Fields · Clapton · Homerton · Hackney Wick · De Beauvoir Town · Stamford Hill
Hackney Council · 29 conservation areas · Article 4: yes
Fulham · Hammersmith · Shepherd's Bush · White City · Parsons Green · Barons Court · Brackenbury Village · Sand's End
Hammersmith & Fulham Council · 45 conservation areas · Article 4: yes
Crouch End · Muswell Hill (Haringey) · Highgate (Haringey) · Harringay · Tottenham · Stroud Green · Hornsey · Wood Green
Haringey Council · 29 conservation areas · Article 4: yes
Harrow on the Hill · Pinner · Stanmore · Harrow Weald · Kenton · Wealdstone · North Harrow · South Harrow
Harrow Council · 29 conservation areas · Article 4: no
Romford · Hornchurch · Upminster · Rainham · Harold Hill · Collier Row · Elm Park
Havering Council · 15 conservation areas · Article 4: no
Uxbridge · Ruislip · Northwood · Hayes · West Drayton · Ickenham · Harefield · Yiewsley · Eastcote · Hillingdon
Hillingdon Council · 29 conservation areas · Article 4: no
Chiswick · Brentford · Isleworth · Hounslow · Feltham · Hanworth · Turnham Green
Hounslow Council · 30 conservation areas · Article 4: no
Angel · Barnsbury · Canonbury · Highbury · Clerkenwell · Finsbury Park · Archway · Tufnell Park · Holloway · Newington Green
Islington Council · 40 conservation areas · Article 4: yes
Kensington · Chelsea · Notting Hill · Holland Park · Earl's Court · South Kensington · Knightsbridge · North Kensington · Brompton
RBKC Planning · 38 conservation areas · Article 4: yes
Kingston · Surbiton · New Malden · Chessington · Tolworth · Norbiton · Coombe
Kingston Council · 22 conservation areas · Article 4: no
Clapham · Brixton · Herne Hill · Kennington · Streatham · Stockwell · Vauxhall · West Norwood · Tulse Hill · Waterloo
Lambeth Council · 64 conservation areas · Article 4: yes
Brockley · Forest Hill · Honor Oak · Lewisham · Blackheath · Catford · Deptford · Hither Green · Sydenham
Lewisham Council · 30 conservation areas · Article 4: no
Wimbledon · Wimbledon Village · Raynes Park · Morden · Mitcham · Colliers Wood · South Wimbledon
Merton Council · 28 conservation areas · Article 4: no
Stratford · Forest Gate · Plaistow · East Ham · West Ham · Canning Town · Royal Docks · Manor Park · Beckton
Newham Council · 10 conservation areas · Article 4: yes
Wanstead · South Woodford · Woodford Green · Ilford · Barkingside · Gants Hill · Snaresbrook
Redbridge Council · 14 conservation areas · Article 4: no
Richmond · Twickenham · Kew · Barnes · East Sheen · Teddington · Hampton · Whitton · Ham · Mortlake
Richmond Council · 72 conservation areas · Article 4: no
Bermondsey · Borough · Camberwell · Peckham · Dulwich Village · East Dulwich · Rotherhithe · Elephant and Castle · Nunhead
Southwark Council · 43 conservation areas · Article 4: yes
Sutton · Carshalton · Cheam · Wallington · Worcester Park · Belmont · Hackbridge
Sutton Council · 17 conservation areas · Article 4: no
Spitalfields · Whitechapel · Bethnal Green · Bow · Mile End · Wapping · Canary Wharf · Limehouse · Poplar · Shadwell · Stepney
Tower Hamlets Council · 58 conservation areas · Article 4: yes
Walthamstow · Leyton · Leytonstone · Chingford · Highams Park
Waltham Forest Council · 17 conservation areas · Article 4: yes
Clapham Junction · Battersea · Balham · Tooting · Wandsworth Common · Earlsfield · Putney · Southfields · Tonsleys · Nightingale Triangle · Roehampton
Wandsworth Council · 45 conservation areas · Article 4: yes
Mayfair · Belgravia · Marylebone · Pimlico · Soho · Covent Garden · St John's Wood · Bayswater · Paddington · Victoria · Westbourne Green · Maida Vale
Westminster City Council · 56 conservation areas · Article 4: yes



The statutory council fee is separate: £548 for a householder application, £610 for a new dwelling, £274 for a lawful development certificate.
All 33 London boroughs and 287 named neighbourhoods, each with its own page carrying the local planning authority, Article 4 position, conservation-area count, postcode districts and dominant housing stock.
12–14 weeks end to end. 8 weeks of that is statutory determination, 13 weeks for a major application, and validation adds one to two weeks on top.
Planning Permission London · Building Regulations Drawings London · Loft Conversion Drawings London · Architectural Drawings London
