Islington Article 4 Directions Require Full Planning Permission for Business Conversions and Conservation Area Alterations

The Local Plan adopted in September 2023 sets Islington's zoning framework through its Strategic and Development Management Policies and the Bunhill and Clerkenwell Area Action Plan. Two tranches of Article 4 directions now remove permitted development rights for Class E to C3 conversions across virtually the entire borough, so any change from business to residential use requires a full planning application.

Article 4 directions also apply in 40 of the 41 conservation areas. External alterations such as window replacements, extensions and roof work lose their permitted development status and need council approval before work begins.

Who faces the new requirements

Residents and businesses planning conversions or modifications in conservation areas must prepare detailed applications rather than proceeding under permitted development. Small residential sites of fewer than 10 units are subject to financial contributions of £50,000 per unit in north and middle Islington and £60,000 per unit south of Pentonville Road and City Road. Any new dwelling, regardless of size, triggers the Community Infrastructure Levy when gross internal floor space reaches 100 square metres or more.

These rules affect homeowners considering extensions, landlords converting commercial premises and developers of small housing schemes. The requirement for full planning permission adds steps to projects that previously could have started without council review.

Application process under current policies

Developments creating new dwellings or meeting the floor-space threshold must account for the Community Infrastructure Levy in project budgets. Small sites must include the per-unit contributions specified for their location relative to Pentonville Road and City Road. The council assesses each case against the September 2023 Local Plan policies and the relevant Area Action Plan provisions.

Applicants are directed to the council's planning pages for guidance on submissions. Decisions will continue to be made case by case under the adopted documents.