Do HMOs need planning permission in Lewisham?

Lewisham has 58 active Article 4 directions in our records. Where an Article 4 direction applies, permitted development rights to convert a home (use class C3) to a small HMO (C4) can be removed, so a full planning application is required. Coverage varies — verify with the council before relying on this.

When does an HMO need a licence in Lewisham?

Nationally, a property let to 5 or more occupants forming 2 or more separate households and sharing a kitchen, bathroom or toilet must hold a mandatory HMO licence — this applies in every council in England, including Lewisham. Some councils also run additional or selective licensing schemes covering smaller HMOs; check the current schemes with Lewisham council.

What are the minimum room sizes for a licensed HMO?

A mandatory HMO licence enforces national minimum sleeping-room floor areas: 6.51 m² for one person aged over 10, 10.22 m² for two people over 10, and 4.64 m² for a child under 10. These are national statute and apply in Lewisham.

Astor Holdings · Borough Intelligence

Lewisham HMO & Article 4 planning

335 applications in the last 12 months · Analysis updated 13 Jul 2026 · High confidence

Grade – 335 apps (12 mo)

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Astor analyst's read

Lewisham — 58 active Article 4 directions in our records, 1 HMO-specific; 335 applications in 12 months.

Profile

Outer south-east London, mixed suburban and urban typology, historically strong family housing stock with growing regeneration pockets.

Planning

58 active Article 4 directions in our records with limited HMO-specific designation suggests heavy conservation footprint; verify HMO Article 4 scope directly with council given sparse metadata.

Deal angle

Moderate regulatory friction from Article 4 density; low HMO-specific restriction in our records, but council verification essential before assuming bridging/HMO headroom.

ASTOR UNDERWRITING UNIT // AI SYNTHESIS // VERIFY WITH COUNCIL BEFORE ACTING

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Map Article 4 zones (oxblood = HMO-related) · application pins · click for detail

58 Article 4 directions recorded for Lewisham, but their polygon geometry isn't published on planning.data.gov.uk yet — the directions below are real (sourced from the metadata feed) and only the map overlay is empty. Coverage will fill in as the LPA uploads boundary data.

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Investment Grade

A: select with confidence · B: selectable with discipline · C: case-by-case · D: avoid unless exceptional

Lewisham is a fast-moving, permissive council for routine works (householder, tree, commercial) but has weaponised Article 4 and town centre policy to eliminate HMO conversions and non-designated CoU plays entirely. 286% volume surge indicates strong investor demand, but applications are tilting toward lower-risk extensions and listed property renovations, not development. Lenders: safe for <8w bridging on householder/commercial; avoid HMO and CoU entirely.

86%

Approval Rate · 12-mo trend

6.3w

Avg Decision

335

Apps (12 mo)

High Committee Risk

Council Profile

Planning stance Permissive on routine works (householder, tree, commercial 85%+); hostile to residential intensification (HMO/CoU). Article 4 enforcement is active and unyielding.

Decision speed Fast

Conservation areas Wide conservation area coverage across SE6 (Forest Hill, Sydenham), SE23 (Honor Oak, Brockley), SE13 (Lee Green, Blackheath). External works (windows, doors, roofs) require conservation area consent; restricts extension/renovation viability.

Key priorities

Town centre first—refusal of conversions outside designated centres (Policy DM17 or equivalent)Residential stability—blocking C3→C4 HMO conversions via Article 4 (Class L)Heritage protection—conservation area external works restrictions in SE6, SE23, SE13, SE26 high-heritage districtsGreen space—TPO scrutiny and biodiversity net gain compliance in new buildsMixed-use/regeneration—Deptford, Catford, New Cross district centres receiving investment pressure

Article 4 directions (planning.data.gov.uk) 58 directions recorded — HMO restrictions apply. Full breakdown ↓

Investment Assessment

Best opportunities

Householder/residential extensions in non-conservation areas (SE4, parts of SE8) targeting 5–8w turnaroundCommercial fit-out and retail within designated town centres (Lewisham, Catford, Deptford) at 100% approvalTree works and ancillary structures (sheds, fences) exploiting 93% approval and 5.0w speedLawful Development Certificates for de-risking phased renovation in conservation zones

Highest risk types

HMO conversions (Article 4 Class L blocks all C3→C4 PD; near-zero viability)Change of Use applications (0% approval on 4 decided apps; likely Policy DM17 enforcement)New Build Residential (1 on record; 25.4w decision + S106 viability risk)Listed Building works (0 decided; expect 12–16w committee process + strict heritage compliance)

HMO viability Zero. Article 4 Direction (Class L, since 2012) eliminates C3→C4 PD; full planning on 7 apps shows near-total refusal. Avoid this sector entirely. — Article 4 restrictions apply, see below ↓

Commercial conversion Strong. Retail/food 100% approval; office→residential (Class MA) likely viable in town centres if density compliant. Catford/Deptford regeneration priority.

Approval factors & Refusal patterns

What gets approved

Fast council velocity—5.9w median decision across all types high

High baseline approval rate (86%) and improving trend (+12pp YoY) high

Commercial/tree works extremely permissive (93–100% approval) medium

Article 4 Direction (Class L, HMO) eliminates C3→C4 conversion opportunity entirely high

Change of Use 100% refusal rate signals aggressive town centre policy enforcement high

Common refusal reasons

Change of Use applications refused—likely policy DM17 (town centre hierarchy first) or DM18 (protecting residential stock) high

Change of Use

HMO conversions (C3→C4) refused or withdrawn—Article 4 Direction blocks permitted development; full planning faces near-total refusal high

HMO / House in Multiple Occupation

Householder refusals (4 on record)—likely conservation area external works or listed building restrictions medium

Residential Extension / Householder

Prior Approval 1 refusal (out of 4)—office/commercial to residential conversions may face viability or density concerns low

Prior Approval / Permitted Development

Timing outlook by type

Householder

5–7 weeks typical; conservation area properties add 1–2w risk.

Change of use

9–11 weeks; extreme refusal risk makes timing irrelevant—assume rejection unless site is town-centre-designated.

Major development

25+ weeks; subject to Section 106, viability appraisal, and committee delegation.

Prior approval

10–12 weeks; slower than fast-track baseline due to pre-application negotiation or density checks.

Application types breakdown

Type	Count	Decided	Approval	Avg weeks	Risk	Investor notes
Other / Miscellaneous Low volume of decisions relative to application volume · Heterogeneous category may mask specific risk pockets	116	41	93%	5.5	low	Highly permissive. Includes LDCs, TPO works, ancillary structures—fast-track opportunity. Monitor granularity.
Residential Extension / Householder 4 refusals on record; likely heritage/conservation friction · Approval rate (81%) below council average (86%)	61	21	81%	5.8	low	Standard risk. Expect 5–6w turnaround. Monitor conservation area constraints in SE6/SE23.
Tree Works Limited dataset (15 decisions) · 1 withdrawal suggests some pre-app negotiation	19	15	93%	5.0	low	Highest approval rate (93%), fastest median (5.1w). Conservation areas may require arboricultural surveys.
Commercial / Retail / Food & Beverage Only 6 decisions; small sample · Longer median (10w) suggests committee scrutiny on use class/impact	15	6	100%	9.7	low	Perfect approval record but slower (10w median). Mixed-use and retail conversion plays viable. Monitor town centre policy.
Change of Use 100% refusal rate (4/4 refused) · Severe underperformance vs national avg (~75%) · Possible Policy H1/Town Centre first refusals	30	4	0%	9.6	high	AVOID. All 4 decided CoU applications refused. Likely Policy DM17 (town centre hierarchy) enforcement. High committee risk.
Prior Approval / Permitted Development 1 refusal despite lower-risk fast-track category · Small sample (4 decisions) · Median 11.7w suggests preapproval delays	8	4	75%	9.6	medium	Better than CoU but sluggish. Class MA (office→residential) may face viability concerns; Class Q (agriculture) low volume.
HMO / House in Multiple Occupation Only 1 decision (refused); 1 withdrawal · Article 4 (Class L) in force since 2012 blocks C3→C4 PD · HMO approval rate collapsed 60pp YoY	7	1	0%	9.0	high	BLOCKED. Article 4 Direction (Class L, in force since 2012-01-01) eliminates C3→C4 permitted dev across all wards. Full planning req'd; extremely high refusal risk.
Advertisement / Signage Minimal sample (2 decisions) · Slower than expected (10.3w median)	3	2	100%	10.2	low	Permissive but slow. Likely town centre/conservation scrutiny on signage design. Low volume suggests niche opportunity.
Lawful Development Certificate Minimal dataset (1 decision) · LDCs rarely refused; low evidential value	3	1	100%	8.1	low	Uncontested (1 approved). Use LDCs to de-risk phased conversions & extensions in conservation zones.
New Build Residential Single data point (1 decision) · 25.4w decision time suggests complex major application · Likely subject to Section 106 and viability appraisal	1	1	100%	25.4	high	Only 1 on record; 25.4w turnaround. Major residential is committee-driven and slow. Expect infrastructure/S106 demands.

Six-month trends

Approval rates improving (+12pp to 86%) but HMO viability collapsing (-60pp) indicates council priority shift toward residential protection, not intensification. Volume surge (286% YoY) is predominantly householder/minor works; major residential and HMO applications languishing. Commercial sector steady and permissive. Expect continued council focus on town centre regeneration (Catford, Deptford, New Cross).

Analyst notes & data quality

Lewisham's 86% approval rate masks severe bifurcation: routine works 85–100% approval, HMO/CoU 0% (systematic refusal). Article 4 HMO enforcement (since 2012, 56 zones covering all major centres) is the dominant constraint—this is not a new policy shift, but data confirms council is weaponising it aggressively. Tier 1 AI triage flagged 31/93 apps for deep-dive, suggesting complexity and committee risk on larger works. High withdrawal rate (3/251) implies pre-app culture is strong—developers negotiating hard before submission. SE6/SE23 high-heritage concentration; expect conservation friction on external works.

HMO Requirements in Lewisham

What it takes to run a House in Multiple Occupation in Lewisham — whether you need planning permission, the licence the property must hold, and the statutory minimum room sizes. Verify current details with the council before committing.

Full guides: HMO licensing in Lewisham ↗ · Article 4 directions ↗

01 · Planning permission

Planning permission required for small HMOs

An Article 4 direction removes permitted development rights for small HMOs (C3→C4) in 1 designated area in our records — converting a family home to a small HMO needs full planning permission here. Confirm whether your property falls within the designated area.

See the full Article 4 picture below ↓

02 · Licence to operate

Mandatory HMO licence National

5 or more occupants forming 2 or more separate households

Any HMO occupied by five or more people making up two or more separate households (sharing a kitchen, bathroom or toilet) must hold a mandatory HMO licence. This applies in every council in England, regardless of the number of storeys.

No Additional or Selective licensing scheme in our records for Lewisham. Many boroughs operate schemes that extend licensing to smaller HMOs or all rented homes, and these change on five-year cycles — check the council's current designation via the gov.uk licence finder ↗.

03 · Minimum room sizes

One person aged over 10	6.51 m²
Two people aged over 10	10.22 m²
One person aged under 10	4.64 m²
Any sleeping room	≥ 4.64 m²

Kitchen, bathroom & WC standards

Licensed HMOs must provide adequate, well-located cooking, washing and toilet facilities for the number of occupants, plus safe gas/electrics, working fire detection and proper waste storage. The exact ratios (occupants per bathroom, per WC, kitchen size) are set by each council in its own HMO amenity standards — confirm the figures with the borough before committing to a scheme.

Minimum room sizes and the mandatory-licensing threshold are national law (Licensing of Houses in Multiple Occupation (Mandatory Conditions of Licences) (England) Regulations 2018), sourced under the Open Government Licence v3 — they apply in every council. Licensing designations shown are those in our records; verify the current position and exact amenity standards with Lewisham Council before relying on this. gov.uk: HMO licences ↗

Article 4 Directions in Lewisham planning.data.gov.uk

HMO conversion (C3→C4)

Requires full planning permission — permitted development rights removed.

1 designated area Relevant to: lender, investor, developer

HMO Restrictions (1)

Check the direction document to confirm the geographic extent.

Article 4 (HMO) — Lewisham HMO since 2012

HMO Conversion (C3→C4)

Converting a family home (C3) to a small HMO of up to 6 people (C4) requires full planning permission — permitted development rights have been removed.

Relevant to: lender, developer, investor

Lewisham HMO & Article 4 planning

See the full picture for Lewisham

HMO Requirements in Lewisham

Article 4 Directions in Lewisham planning.data.gov.uk