Westminster leaflet 2004; Camden statement 1998Find the guidance for each side of the boundary
Westminster first designated its Covent Garden conservation area in 1971 and extended it in 1974, 1978, 1987 and 2007, but lists no conservation area audit for it: the council publishes an information leaflet dated May 2004, a directory and a map. The leaflet predates the 2007 extension, so check the boundary on the council’s map and weigh proposals against City Plan Policies 44 and 45. The leaflet names Strand and Savoy, Adelphi, Trafalgar Square and Leicester Square as adjoining conservation areas.
Westminster’s conservation areas: character summaries and overview · Westminster: conservation area audits, maps and guidance A–K · Westminster: Covent Garden conservation area information leaflet, May 2004 · Westminster: Covent Garden conservation area map · City Plan 2019–2040 (2026), adopted 21 January 2026 · Westminster: conservation areas and audits
Camden’s Seven Dials (Covent Garden) conservation area was designated on 26 November 1971 and extended in 1974, 1991 and 1998, and its statement dates from 1998. Policy D2 of the Local Plan commits the council to taking account of such statements, but this one predates the 2017 Local Plan, so read it as Camden’s adopted 1998 guidance rather than current policy.
Camden: Seven Dials (Covent Garden) conservation area statement, 1998 · Camden Local Plan 2017: policy document · Camden Local Plan, adopted 3 July 2017
The 1998 statement says roof alterations at the front, rear and side need planning permission, that opportunities for roof extensions are limited and that an extension is likely to be unacceptable on a largely unimpaired terrace. Concealed roof gardens, for example behind parapets, can be acceptable but not on mansard roofs, and infilling yards and rear spaces will generally be unacceptable. Rear extensions that would spoil a uniform rear elevation are not acceptable under it either.
Camden: Seven Dials (Covent Garden) conservation area statement, 1998
Article 4 lists checked 4 October 2026No heritage direction, but a basement direction on each side
Westminster’s Article 4 page lists minor-alteration directions, but none with a stated address is in Covent Garden, and Camden’s heritage Article 4 index, checked on 4 October 2026, lists none for Seven Dials. That leaves listing, conservation-area limits and the lease in place, and a flat never had householder rights to lose.
Westminster: Article 4 directions and address map · Camden: current heritage Article 4 directions · Historic England: listed-building consent · Householder permitted development technical guidance · LEASE: alterations and home improvements
Each council’s basement direction applies on its own side. Westminster’s city-wide direction, in force since 31 July 2016, removes householder rights to build basements, lightwells or other development below a house; Camden lists its borough-wide direction as adopted on 1 June 2017 and says planning permission is needed for any basement excavation. Both councils’ Class MA directions concern turning commercial premises into homes, not work to an existing home, and apply by address.
Westminster: city-wide basement Article 4 direction, confirmed July 2016 · Westminster: Article 4 directions and address map · Camden: borough-wide basement Article 4 direction · Camden: Article 4 directions on changes of use (Class MA)
City Plan 2026; Camden Local Plan 2017Two adopted plans, and drafts that are not yet policy
On the Westminster side, the City Plan 2019–2040 (2026), adopted on 21 January 2026, is the basis for decisions. Under Policy 44, work to a listed building must keep its special interest intact and development must preserve or enhance a conservation area, while Policy 45E accepts a roof extension in principle only where heritage assets are not adversely affected. A New City Plan, begun with a notice of intention in July 2026, is emerging only.
Westminster: adopted planning policies and made neighbourhood plans · City Plan 2019–2040 (2026), adopted 21 January 2026 · Westminster: New City Plan (emerging, not adopted)
On the Camden side, the adopted Local Plan of 3 July 2017 still governs decisions. The Inspector’s letter ED102, dated 12 August 2026, found its replacement, submitted on 3 October 2025, unsound as it stands but probably capable of being made sound with main modifications, which must go to consultation for six weeks or more; no dates had appeared by 4 October 2026. Camden’s guidance index shows its January 2021 planning guidance for home improvements, basements and design as adopted; it carries less weight than the Local Plan.
Camden Local Plan, adopted 3 July 2017 · Replacement Camden Local Plan: examination news · Inspector’s post-hearings letter ED102, 12 August 2026 · Camden: planning policy and guidance documents
Basement directions 2016 and 2017Refitting below ground versus digging a basement
Updating a shower room on an existing lower ground floor is a separate matter from digging deeper or cutting a new lightwell. On the Westminster side, Policy 50 supports new basements one storey at most below the lowest original floor; under the May 2026 Code of Construction Practice, every new or extended basement needs a Construction Management Plan; and a desk-based archaeological assessment must accompany any application with groundworks in a priority area.
City Plan 2019–2040 (2026), adopted 21 January 2026 · Westminster Code of Construction Practice, May 2026 · Historic England: City of Westminster Archaeological Priority Areas appraisal, March 2017
On the Camden side, a new or extended basement needs its own site Basement Impact Assessment addressing groundwater, drainage, flood risk and structural stability, and Local Plan Policy A5 limits basements to one storey. The 1998 Seven Dials statement adds that new front basement areas will generally be resisted, which matters on streets where buildings rise straight from the footway.
Camden: basement development and impact assessments · Camden Local Plan 2017: policy document · Camden: Seven Dials (Covent Garden) conservation area statement, 1998
Pin down the council and the consents for this address before any window order, roof change or excavation plan. Planning permission, listed building consent, conservation-area controls, each council’s basement direction, Building Regulations, lease consent and the Party Wall Act are independent: clearing one does not settle another, and neither a 2004 leaflet nor a 1998 statement is a decision on your scheme.
Find the council for the property · Historic England: listed-building consent · Westminster: conservation areas and audits · Camden conservation areas and heritage statements · Westminster: city-wide basement Article 4 direction, confirmed July 2016 · Camden: borough-wide basement Article 4 direction · When Building Regulations approval is needed · LEASE: alterations and home improvements · Party-wall work requiring notice