Planning in Lambeth

Before submission

Validation requirements

Lambeth validates planning applications by ensuring sufficient information is provided to assess the proposal. If items are missing, applicants must supply them within 28 days or the application is returned without assessment.

• The validation process typically occurs within five days of receipt.
• Decision target dates are eight weeks for smaller applications and house extensions, and thirteen weeks for larger developments.

SourceLambeth — application requirements(opens in a new tab)· checked 2026-10-07

Timescales

Realistic decision times

Statutory target

The national determination period set in law, counted from validation. A target, not a guarantee.

Actual processing time

What the council's published performance data shows in practice, including extensions of time.

Allow for validation before the decision period starts. The usual statutory determination periods in England are 8 weeks for non-major applications, 13 weeks for major development and 16 weeks where environmental impact assessment is required, unless a different period is agreed.

• These are statutory targets, not a measured borough average or a guarantee. No current borough-specific average has been verified for this guide.
• An incomplete submission, amendments, committee referral or an agreed extension of time can extend the overall programme.
• Ask the planning team about its current validation queue before setting a construction date. Prior approval and other specialist applications can have different statutory periods.
• Validation typically occurs within five days of receipt, with decision targets of eight weeks for smaller projects and thirteen weeks for larger developments. Check the application guidance linked above for the latest position.

SourceGOV.UK — determining a planning application(opens in a new tab)· checked 2026-10-07

Permitted development

Article 4 restrictions

These are selected directions, not an exhaustive address search. Read the council’s current map, schedule, commencement date and any later modifications for your property. A conservation area is not automatically an Article 4 area, and a direction affecting changes of use does not necessarily restrict a home extension. Confirm the responsible planning authority too: some development-corporation areas have separate arrangements.

Lambeth Council uses Article 4 Directions to withdraw specific permitted development rights, requiring formal planning permission for affected works. These directions cover both changes of use and external building alterations.

• Directions exist to withdraw Class MA (commercial conversion) and Class L(b) (C3 to small HMO) permitted development rights.
• Article 4 Directions removing rights for external alterations are in effect for conservation areas including Albert Square, Hyde Farm, Lansdowne Gardens, Leigham Court Estate, Park Hall Road, St Marks, Stockwell Park, Streatham Lodge, and Vauxhall.

SourceLambeth — Article 4 information(opens in a new tab)· checked 2026-10-07