Planning application
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Works: Loft or dormer Windows or glazing
Relates to 26/04081/FULL
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Removal of an existing roof lantern and infilling of the opening with a new insulated timber roof construction at third floor roof level; replacement of three existing rooflights with new thermally improved rooflights at fifth floor roof level; and associated repair, waterproofing and roof works at 66 Portland Place. (Linked with 26/04081/FULL)
As published by the council, reference 26/04082/LBC
Application record
- Reference
- 26/04082/LBC
- Category
- Heritage and listed buildings
- Status
- Pending
- Received
- 22 Jun 2026
- Validated
- 22 Jun 2026
- Postcode
- W1B 1AD
Site history
Applications at this address on the Westminster register
This site has had 29 applications since 2025: 5 approved, 0 refused.
-
26/04967/ADLBC Withdrawn
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Details of installation of services and related fixtures pursuant to condition 8 (partial) of listed building consent dated 10 June 2025 (RN: 25/01205/LBC)
-
26/04081/FULL Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Removal of an existing roof lantern and infilling of the opening with a new insulated timber roof construction at third floor roof level; replacement of three existing rooflights with new thermally improved rooflights at fifth floor roof level; and associated repair, waterproofing and roof works at 66 Portland Place. (Linked with 26/04082/LBC)
-
26/03809/ADLBC Decided
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Details of the new lightning protection pursuant to Condition 7 (part 8) (part) of listed building consent dated 11th June 2025 (RN:25/01205/LBC).
-
26/02669/ADFULL Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Details of safe maintenance access systems pursuant to condition 16 (partial) of planning permission dated 10 June 2025 (RN: 25/01204/FULL).
-
26/02621/ADLBC Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Details of safe maintenance access systems pursuant to the partial discharge of condition 7 (Part 8) of listed building consent dated 11th June 2025 (RN: 25/01205/LBC).
-
26/02506/ADLBC Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Detailed drawings of the new or adjusted ceilings pursuant to condition 7 (15) of listed building dated 11th June 2025 (RN:25/01205/LBC)
-
26/02376/ADLBC Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Detailed drawings of the proposed works to the new and adjusted ceilings in the highly significant spaces pursuant to the partial discharge of condition 8 of listed building consent dated 11th June 2025 (RN: 25/01205/LBC).
-
26/02297/ADFULL Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Details of refuse and recycling storage pursuant to condition 11 of planning permission dated 10 June 2025 (RN: 25/01204/FULL)
-
26/02280/ADLBC Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Detailed drawings to show the buildings areas of high significance and details of the position, type, and method of installation of services and related fixtures. Pursuant to partially discharge elements of condition 8 of Listed Building Consent dated 11 June 2025 (RN 25/01205/LBC)
-
26/01923/ADLBC Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Detailed drawings of the a plan to show the building's areas of high significance and details of the position, type, and method of installation of services and related fixtures, including any fire safety works, in areas designated as "high significance", with particular regard to the Jarvis and Florence Hall, Main Foyer and Central Staircase pursuant to condition 8 of planning permission dated 11th June 2025 (RN:25/01205/LBC)
Timeline
Dates from the published record
-
22 Jun 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 17 August 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 65 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
-
26/04081/FULL Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Removal of an existing roof lantern and infilling of the opening with a new insulated timber roof construction at third floor roof level; replacement of three existing rooflights with new thermally improved rooflights at fifth floor roof level; and associated repair, waterproofing and roof works at 66 Portland Place. (Linked with 26/04082/LBC)
1 later application on the register refers to this one:
-
26/04081/FULL Awaiting decision
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Removal of an existing roof lantern and infilling of the opening with a new insulated timber roof construction at third floor roof level; replacement of three existing rooflights with new thermally improved rooflights at fifth floor roof level; and associated repair, waterproofing and roof works at 66 Portland Place. (Linked with 26/04082/LBC)
What happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided heritage and listed building applications in a median of 93 days. More in our guide to how long planning decisions take.
About heritage and listed building applications
Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
89% historically approved · decision due ~5 Aug
Details of the new lightning protection pursuant to Condition 7 (part 8) (part) of listed building consent dated 11th June 2025 (RN:25/01205/LBC).
Decided -
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
89% historically approved · decision due ~18 Sep
Details of installation of services and related fixtures pursuant to condition 8 (partial) of listed building consent dated 10 June 2025 (RN: 25/01205/LBC)
Withdrawn -
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Details of new external fire escape, new pavement lights and supporting structure in the Weymouth Street lightwell, new or adjusted balustrades and railings, new guardrail and glass balustrade, new bronze grilles in the Florence Hall floor, alterations to the stage in the Jarvis Hall pursuant to Conditions 7 (Parts 4, 5, 6, 11, 12 and 13) of listed building consent dated 11 June 2025 (RN: 25/01205/LBC)
Granted Conditions 7 docs -
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
91% historically approved · decision due ~11 Jun
Detailed drawings of the new or adjusted ceilings pursuant to condition 7 (15) of listed building dated 11th June 2025 (RN:25/01205/LBC)
Awaiting decision Conditions 11 docs -
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
91% historically approved · decision due ~3 Jun
Detailed drawings of the a plan to show the building's areas of high significance and details of the position, type, and method of installation of services and related fixtures, including any fire safety works, in areas designated as "high significance", with particular regard to the Jarvis and Florence Hall, Main Foyer and Central Staircase pursuant to condition 8 of planning permission dated 11th June 2025 (RN:25/01205/LBC)
Awaiting decision Conditions 29 docs -
Royal Institute Of British Architects 66 Portland Place London W1B 1AD
Details of a plan to show the building's areas of high significance and method of installation of services and related fixtures, including any fire safety works, in areas designated as "high significance", with particular regard to the Jarvis and Florence Hall, Main Foyer and Central Staircase pursuant to Condition 8 (part) of the listed building consent dated 11 June 2025 (RN:25/01205/LBC).
Granted Conditions 58 docs
Other heritage and listed building applications
In Westminster
-
26/06250/LBC Awaiting decision
53 Wimpole Street London W1G 8YH
Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06249/FULL)
-
26/06203/LBC Awaiting decision
106 Blandford Street London W1U 8AG
Installation of two roof-mounted anchor posts. (Linked to 26/06202/FULL)
-
26/06187/LBC Awaiting decision
4 Shepherd Market London W1J 7QB
Installation of wall mounted highway street light on to the facade of 4 Shepherd Market.
-
26/06216/LBC Awaiting decision
208 Regent Street London W1B 5BD
Strip-out of existing, modern retail unit fixtures, fittings, stair and services, with retention of heritage and listed features, including shopfront and entrances, and ground floor ceiling details and features. Fit-out of new retail fittings, fixtures and services. Retention of shopfront with new 'like-for-like' signage and a new flag pole.
-
26/06176/LBC Awaiting decision
46 Gloucester Place London W1U 8HG
Installation of 1,100 mm high protective railings along the existing roof-level access walkway. (Linked to 26/06178/FULL)