Designated 1969; guidelines January 2002Islington’s Barnsbury Conservation Area
Islington’s table gives the Barnsbury Conservation Area (CA10) a designation date of 1 April 1969, a last amendment or extension on 22 April 2004 and current design guidelines adopted in January 2002. The guidelines say the council will operate special policies there to preserve and enhance the area’s special character and appearance. As the boundary was last changed after the guidelines were written, check the address on Islington’s current map. Regent’s Canal West (CA17), which the Site Allocations also list as adjacent to the Barnsbury Estate, was designated on 27 January 1981 and has its own guidelines of January 2002.
Islington conservation areas, designation dates and design guidelines · Islington: Barnsbury (CA10) Conservation Area Design Guidelines, January 2002 (PDF) · Islington Local Plan: Site Allocations, adopted 28 September 2023 (PDF)
For a refurbishment, the guidelines bear most on the outside. Traditional roof extensions may be permitted on the properties listed in Schedule 10.2; otherwise none visible from any street level position will be permitted, including long views. New or enlarged dormers and rooflights are not permitted on the front or side slopes of exposed pitched roofs; plant rooms, air conditioning units and water tanks at roof level are opposed where they can be seen from the street or public space; and full width rear extensions above one storey are not normally permitted. The council seeks to keep porticos and traditional ironwork, and will not give permission to alter or remove original or traditional front walls and railings.
Islington: Barnsbury (CA10) Conservation Area Design Guidelines, January 2002 (PDF)
40 of 42 areas; guide December 2024Article 4 directions in the Barnsbury Conservation Area
Islington has removed permitted development rights by Article 4 direction in 40 of its 42 conservation areas to prevent some minor alterations, and explains that a direction may mean applying for planning permission for changes such as external doors and windows or painting outside brickwork. Its works-to-windows and external wall insulation checklists name Barnsbury among the conservation areas where an Article 4 direction removes the permitted development right to make material changes to house windows, or to apply external insulation to a house, facing a public highway.
Islington permitted development and Article 4 directions · Islington conservation areas, designation dates and design guidelines · Islington works to windows: planning permission checklist · Islington external wall insulation: planning permission checklist
Islington’s permitted development guide for net zero works, dated December 2024, names Barnsbury for replacing windows and applying external insulation on the front elevation of a house, and points to the council’s interactive map to see which conservation areas have directions. The January 2002 guidelines also describe an Article 4(1) direction controlling forecourt enclosures at 270–400 (even) Caledonian Road. Islington’s change-of-use directions, such as those on Class E to C3, are separate from householder works; ask the council for the full scope at your address.
Islington Permitted Development Guide for Net Zero Works, December 2024 (PDF) · Islington: Barnsbury (CA10) Conservation Area Design Guidelines, January 2002 (PDF) · Islington permitted development and Article 4 directions
Local Plan adopted 28 September 2023Islington’s adopted Local Plan
Islington adopted its Local Plan on 28 September 2023 in three parts: the Strategic and Development Management Policies, Site Allocations and the Bunhill and Clerkenwell Area Action Plan. Policy DH2 requires planning and listed building consent applications to include a Heritage Statement that shows a clear understanding of the significance of any heritage assets affected. It also requires development in conservation areas to conserve or enhance their significance, and the buildings, spaces and trees that contribute to that significance to be retained. The plan lists Lonsdale Square, Gibson Square, Thornhill Square and Barnsbury Square Garden among its historic green spaces, each marked as a London Square.
Islington Local Plan, adopted 28 September 2023 · Islington Local Plan: Strategic and Development Management Policies
The plan treats locally listed buildings as non-designated heritage assets and resists their removal. It names two Barnsbury moated-manor Archaeological Priority Areas, both Tier 2, and Policy DH2 requires an Archaeological Assessment for proposals that could affect archaeological remains, particularly in such areas. Historic England’s record for the Barnsbury moated site 1 priority area describes the site of a former medieval moated enclosure and house, and traces the manor house back to the early 14th century. Policy H2 requires planning permission to combine two or more homes into one, and allows a home to be split only where, among other tests, it exceeds 125sqm gross internal area.
Islington Local Plan: Strategic and Development Management Policies · Planning Data (Historic England): Barnsbury moated site 1, Archaeological Priority Area, Tier II
Basement SPD 2016; design guide 2017Islington’s basement and urban design guidance
Islington’s Urban Design Guide, adopted in January 2017, says roof extensions anywhere along an unaltered roofline in a conservation area will not generally be acceptable, that acceptable roof extensions on terraces or villas must be restricted to a single storey, and that flat mansards are usually not acceptable in conservation areas. It asks for chimney stacks to be retained, and for butterfly parapet profiles to be kept where they are a characteristic feature.
Islington urban design guide SPD, adopted January 2017 · Islington Urban Design Guide SPD, January 2017
The Basement Development SPD, adopted in January 2016, notes that householder permitted development rights do not apply to flats or maisonettes and do not remove the need for listed building consent. In conservation areas it generally resists infilling front lightwells, says any front lightwell should go no lower than the original lower ground floor where one exists, and asks that basements under gardens leave the prevailing garden level unchanged. Islington says a basement usually needs planning permission.
Islington basement development guidance · Islington Basement Development SPD, January 2016
Work out the consent route for the exact Barnsbury address before you commit to new windows, roof work or any digging. Treat each regime on its own terms: planning permission, listed building consent, conservation-area controls, any Article 4 direction, the Building Regulations, the landlord’s consent under a lease and any Party Wall procedure. An approval under one leaves every other still to check.
