Listed building consent process, London

Overview of the LBC process

Listed building consent (LBC) is determined under the Planning (Listed Buildings and Conservation Areas) Act 1990. In London, the process runs through six stages: pre-application engagement, submission, validation, public and statutory consultation, officer assessment and decision, and (where granted) discharge of any pre-commencement conditions. Each stage has its own risks and its own opportunities to strengthen the application.

Pre-application stage

Most London boroughs offer a paid pre-application advice service for LBC. The cost varies (Westminster, Camden and RBKC publish their fee scales). Pre-application is optional but on any non-trivial scheme it is the single most useful intervention available: it surfaces officer concerns before submission, when the design and the heritage statement can still be revised at low cost.

A defensible pre-application submission includes a draft significance assessment, a description of the proposal, a heritage impact summary and the relevant policy framework. Pre-app responses in inner London commonly take six to eight weeks.

Validation in London boroughs

LBC applications are submitted via the Planning Portal and validated against each borough's local validation list. Validation requirements vary materially. Westminster, Camden and RBKC require a heritage statement, full architectural drawings (existing, proposed and demolition), a design and access statement (where applicable), a photographic survey and the application forms and certificates. Outer London boroughs may have lighter requirements but still expect a heritage statement.

In inner London, validation backlogs of three to six weeks are routine. The statutory eight-week clock starts on validation, not submission. A complete, well-organised submission shortens validation materially.

Consultation and statutory consultees

LBC applications attract statutory consultation. The borough notifies neighbours, posts a site notice and publishes the application on the planning register. Statutory consultees include:

• Historic England, for Grade I and Grade II* listed buildings and certain Grade II works (demolition, extensions over 100 sq m and works to scheduled monuments).
• The relevant national amenity society (the Georgian Group, the Victorian Society, the Twentieth Century Society, SPAB, the Ancient Monuments Society) where partial or total demolition is proposed.
• The Greater London Authority for schemes of strategic importance.
• The local civic or amenity society, where one is active.

Neighbour and amenity society objections do not, on their own, refuse an application. Officer assessment turns on the heritage and policy merits.

Decision-making and the harm test

The decision-maker (usually a delegated officer, sometimes the planning committee) must apply the statutory duty under section 16(2) of the 1990 Act: special regard to the desirability of preserving the building, its setting and any features of special interest. National policy is set out in NPPF paragraphs 205 to 208, which establish the harm test (substantial vs less than substantial) and the public benefits balance.

In practice, most London LBC refusals turn on one of three things: an unevidenced significance baseline, a proposal that causes harm without sufficient public benefit, or a heritage statement that does not engage with the borough's specific policy and appraisal documents.

How LBC varies by London borough

Borough conservation policy is dense and varies materially. Westminster's Repairs and Alterations Manual sets a higher standard than the national norm. RBKC's Heritage Asset Strategy and conservation area appraisals (over 30 of them) are detailed and frequently cited in officer reports. Camden's Conservation Area Statements and Local Plan policy D2 are exacting. Hackney, Tower Hamlets and Southwark have stronger conservation positions than is commonly assumed. Outer boroughs vary; Richmond, Barnet and Greenwich have particularly active conservation teams.

After the decision

A grant of LBC is normally subject to conditions. Pre-commencement conditions (typically materials, joinery details, services routing) must be discharged before the relevant works start. Failure to comply is a breach of consent and an offence under section 9 of the 1990 Act.

A refusal can be appealed to the Planning Inspectorate within six months under section 20 of the 1990 Act. Most LBC appeals run by written representations; larger or contested schemes can go to a hearing or inquiry. Appeals are heard against the same statutory and policy framework, and the heritage evidence has to be of a higher standard than at first instance.

FAQs