Holborn Renovations & Design-Build — WC1

Match the address to its conservation area guidance

Camden’s Bloomsbury appraisal and management strategy, adopted in April 2011 for an area first designated in 1968, replaced a 1998 statement. Its sub areas covering Holborn are New Oxford Street/High Holborn/Southampton Row, Lincoln’s Inn Fields/Inns of Court/High Holborn, Great James Street/Bedford Row and Queen Square/Red Lion Square. It expects original features to be kept and repaired, but it cites policy since replaced, so read it alongside the current Local Plan.

Bloomsbury conservation area appraisal and management strategy, April 2011 · Camden Local Plan, adopted 3 July 2017

Hatton Garden, designated in 1999, has an appraisal adopted on 12 September 2017. Under it, total or substantial demolition needs planning permission, as do roof alterations, extensions and terraces, which are unlikely to be acceptable where they harm the building, break a terrace’s unified roofscape or are prominent in the townscape or long views.

Hatton Garden conservation area appraisal and management strategy · Hatton Garden conservation area appraisal, adopted September 2017

The Kingsway area, designated on 16 June 1981, has a statement adopted in December 2001 describing it as predominantly commercial with little residential use; it adjoins Bloomsbury at Lincoln’s Inn Fields and the neighbouring Seven Dials area. Across the boundary, the City of London’s Chancery Lane conservation area, between Holborn, Fleet Street, Chancery Lane and Fetter Lane, has its own guidance adopted on 23 February 2016, and Camden’s appraisals do not apply there.

Kingsway conservation area appraisal and management strategy · Kingsway conservation area statement, December 2001 · City of London: Chancery Lane conservation area SPD, adopted 23 February 2016 · Find the council for the property

Article 4: what applies at a Camden address

As of 4 October 2026, Camden’s heritage Article 4 index lists no direction for the Bloomsbury, Hatton Garden or Kingsway conservation areas. The Bloomsbury appraisal says a direction is not considered appropriate there, given the high proportion of listed buildings and the limited number of properties with permitted development rights. Without a direction, the controls that remain are listing, the conservation-area rules and the normal limits of householder permitted development, which a flat does not have in any case.

Camden: current heritage Article 4 directions · Bloomsbury conservation area appraisal and management strategy, April 2011 · Householder permitted development technical guidance · Historic England: listed-building consent

Camden’s borough-wide basement direction does apply, so every basement excavation at a Camden address needs planning permission. Its Class MA directions, in effect from 29 July 2022 and, as modified, applying from 23 February 2023 in the areas shown on its maps, concern turning commercial premises into homes rather than work to an existing home. For a City of London or Westminster address, check that council’s own Article 4 information.

Camden: borough-wide basement Article 4 direction · Camden: Article 4 directions on changes of use (Class MA) · Find the council for the property

Work from the adopted plan and the current planning authority

Camden still treats its Local Plan of 3 July 2017 as the basis for planning decisions. Its replacement, submitted on 3 October 2025, had hearings in May and June 2026, and in letter ED102 of 12 August 2026 the Inspector found it unsound as submitted but likely capable of being made sound through main modifications, with at least six weeks’ consultation to follow. When checked on 4 October 2026, no consultation timetable had appeared; the draft is not adopted policy.

Camden Local Plan, adopted 3 July 2017 · Replacement Camden Local Plan: examination news · Inspector’s post-hearings letter ED102, 12 August 2026

Camden lists its January 2021 planning guidance on home improvements, basements and design as adopted, though that guidance carries less weight than the Local Plan. None of Camden’s adopted neighbourhood plans covers Holborn.

Camden: planning policy and guidance documents · Camden: neighbourhood planning

Since 10 August 2026 the Oxford Street Development Corporation has been the local planning authority for its mapped area, which includes land around Tottenham Court Road station and St Giles. Camden says planning applications, pre-application requests and enforcement complaints for that area must not be sent to it, and the corporation decides transferred applications using Camden’s plan. If your address is near there, check the boundary map.

Camden: transfer of planning powers to the Oxford Street Development Corporation · Oxford Street Development Corporation area boundary map

Refitting a lower ground floor is not excavation

At a Camden address, the borough-wide Article 4 direction, which the council lists as adopted on 1 June 2017, means every basement excavation needs planning permission. A new or extended basement also needs a site-specific Basement Impact Assessment covering drainage, flooding, groundwater and structural stability. The basements policy in the draft replacement plan is still under examination and is not adopted.

Camden: borough-wide basement Article 4 direction · Camden: basement development and impact assessments · Replacement Camden Local Plan: examination news

Upgrading a bathroom in a basement that already exists raises different questions from deepening it or cutting a new lightwell. Hatton Garden’s appraisal generally resists new front lightwells and accepts basements under or behind buildings only where they do not harm the area. The Bloomsbury strategy resists infilling lightwells and, where shops have infilled basements and the pavement meets the building, does not normally accept excavation.

Hatton Garden conservation area appraisal, adopted September 2017 · Bloomsbury conservation area appraisal and management strategy, April 2011