City of London
External and internal alterations to Carpenters Hall, 1 Throgmorton Avenue and 23 Great Winchester Street, including: i) the demolition of fourth and fifth floors of Carpenters Hall and lift overrun and their replacement with new fourth, fifth and sixth floors with roof level terrace and plant enclosure; a new pavilion to the third-floor link extension over Throgmorton Avenue; improved step-free access including new step-free routes from Throgmorton Avenue and London Wall; the reinstatement of external decorative detail and refurbishment of London Wall arcade and facades; internal works including minor opening up of the party wall to create connection through to 3 Throgmorton Avenue and access to new associated archive and learning centre; the restoration of historic circulation to Court Room at ground floor; the removal of existing suspended ceilings and secondary glazing throughout and replacement of windows; minor redecoration and refurbishment of the interiors and associated works. ii) The demolition of the existing fourth floor and construction of a new fourth and fifth floors at 23 Great Winchester Street and the interconnection of Nos. 3 (in part), 5-7, 15-17 Throgmorton Avenue and 23 Great Winchester Street and the creation of step-free access from Great Winchester Street. Internal works to 23 Great Winchester Street including reconfiguration of lightwell, the restoration of the entrance skylight, re-instatement of historic circulation and plan form at ground, first, second and third floors including access to the main staircase at ground floor level. Internal works including the removal of partitions, doors, suspended ceilings existing secondary glazing, plant, access ladders and walkways, replacement windows and associated works.
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Progress
Application details
- Reference
- 24/01054/LBC
- Local authority
- City
- Ward
- BD
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 30 Oct 2024
- Validated
- 30 Oct 2024
- Comments close
- 28 Nov 2024
- Target decision
- 25 Dec 2024
- Decided
- 5 Jun 2026
Estimated project value
£4k–£12k
Typical UK cost for this job type, at UK average rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: FMB 2026 double glazing guide, 3-bed semi full replacement.
Floor area gained: 6,088m²
Planning constraints
No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.
Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.
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