What Article 4 HMO directions do + which boroughs 2026
Town + Country Planning Act 1990 + GPDO 2015 grant permitted development for change of use Class C3 (single dwelling) → Class C4 (small HMO 3–6 occupants). Article 4 directions remove that PD right in defined geographic areas, meaning full planning application required. Larger HMO (7+ occupants = sui generis) always needs planning regardless. Designated Article 4 HMO directions in London 2026: Newham (borough-wide 2013); Tower Hamlets (borough-wide 2014); Waltham Forest (borough-wide 2018); Hackney (borough-wide 2019); Lewisham (designated wards New Cross, Brockley, Lewisham Central, Forest Hill, Catford South 2020); Lambeth (designated wards Streatham Hill, Streatham South, Streatham Wells, Knight's Hill, Brixton Hill 2021); Southwark (Peckham, Camberwell Green, South Bermondsey 2021); Croydon (borough-wide 2017); Brent (Willesden Green, Dudden Hill, Mapesbury, Kilburn 2019); Ealing (West Ealing, Hanwell, Northfield, Southall 2020); Hounslow (Hounslow Central, Hounslow West, Heston West, Cranford 2019); Barking + Dagenham (borough-wide 2017); Redbridge (borough-wide 2019); Enfield (Edmonton Green, Lower Edmonton, Upper Edmonton, Tottenham Hale fringe 2020); Haringey (Tottenham Hale, Tottenham Green, Northumberland Park, West Green, Bruce Grove 2019); Bexley (North End, Erith, Lesnes Abbey 2022). Boundaries precise + often cover only specific streets. Check LPA constraint search portal or pre-app advice (£280–£540) before purchase. Refusal rates: Newham 55–65%, Tower Hamlets 45–55%, Hackney 50–60%, Croydon 40–55%, Waltham Forest 40–50%, Lambeth + Lewisham + Southwark 35–45%. Common refusal reasons: HMO saturation (10–20% per area threshold), amenity loss, parking pressure, character harm, fire-safety deficiency, room size below standard, no Section 106 contribution offered.
Application route + evidence + cost + alternatives
Application route C3→C4 via Article 4 area: full planning (£293 + £180–£480 architect drawings). Larger HMO C3→sui generis (7+): full planning £462–£675 + likely Section 106 + management plan. Evidence to maximise approval: (1) HMO saturation desktop study — 200m radius map showing existing HMOs vs borough threshold; (2) Amenity standards declaration ([[minimum-room-sizes-hmo-london-2026]], [[hmo-amenity-standards-london]]) + waste/cycle storage; (3) Parking + transport (PTAL rating + cycle parking 0.5–1 per occupant); (4) Management plan — named manager + 24/7 contact + tenancy template + ASB procedure; (5) Neighbour engagement — pre-app consultation letters + recorded responses. Pre-application advice £280–£540 strongly recommended. Decision 8–13 weeks typical (extended 16 weeks if committee). Appeals: written representations 9–14 weeks via PINS, success 25–40% (character + saturation hard to overturn). Alternatives: (1) Lodger scheme — 1–2 lodgers under Rent a Room (£7,500 tax-free); (2) Buy outside Article 4 — Hammersmith + Fulham, Wandsworth, Merton, Kingston, Sutton, Richmond, Bromley, Greenwich, Hillingdon, Harrow, Havering still PD; (3) Large family let (C3) — let to large related family, remains C3. Builderr default: pre-app engagement + saturation desktop + amenity-exceeding design = approval odds 65–75% (vs LPA average 35–45%). Typical 6-bed C3→sui generis HMO project total £125,000–£195,000 inc planning + conversion + furniture.
