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Planning application

Royal Institute Of British Architects 66 Portland Place London W1B 1AD

Awaiting decision Westminster 26/04081/FULL Full Planning Permission Application

Works: Loft or dormer Windows or glazing

Relates to 26/04082/LBC

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 26/04082/LBC)

As published by the council, reference 26/04081/FULL

Application record

Reference
26/04081/FULL
Type
Full Planning Permission Application
Status
Pending
Received
22 Jun 2026
Validated
22 Jun 2026
Ward
West End
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  • 26/04967/ADLBC Withdrawn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)

    Submitted 24 Jul 2026
  • 26/04082/LBC 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 26/04081/FULL)

    Submitted 22 Jun 2026 Heritage and listed buildings
  • 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).

    Submitted 10 Jun 2026
  • 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).

    Submitted 22 Apr 2026 Full applications
  • 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).

    Submitted 21 Apr 2026 Conditions
  • 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)

    Submitted 16 Apr 2026 Conditions
  • 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).

    Submitted 10 Apr 2026 Conditions
  • 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)

    Submitted 7 Apr 2026 Full applications
  • 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)

    Submitted 7 Apr 2026 Conditions
  • 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)

    Submitted 24 Mar 2026 Conditions

Timeline

Dates from the published record

  1. 22 Jun 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. 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.

Cases linked to this one on the register

  • 26/04082/LBC 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 26/04081/FULL)

    Submitted 22 Jun 2026 Heritage and listed buildings

1 later application on the register refers to this one:

  • 26/04082/LBC 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 26/04081/FULL)

    Submitted 22 Jun 2026 Heritage and listed buildings

Who's behind it

Company information only, from the register and Companies House

Newmark LLP Agent

978 applications on PlanIndex · across 39 councils · 97% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

16 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Trade members open them from here.

Open the documents

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 full applications in a median of 89 days. More in our guide to how long planning decisions take.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • Royal Institute Of British Architects 66 Portland Place London W1B 1AD

    26/03809/ADLBC Submitted 10 Jun 2026 8m away

    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

    26/04082/LBC Submitted 22 Jun 2026 8m away

    90% historically approved · decision due ~17 Aug

    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)

    Awaiting decision Heritage and listed buildings Loft or dormer Windows or glazing

  • Royal Institute Of British Architects 66 Portland Place London W1B 1AD

    26/04967/ADLBC Submitted 24 Jul 2026 8m away

    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

    25/07571/ADLBC Submitted 20 Oct 2025 8m away

    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

    26/02506/ADLBC Submitted 16 Apr 2026 8m away

    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

    26/01923/ADLBC Submitted 24 Mar 2026 8m away

    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

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront.

    15 Sep 2026 Full applications
  • 26/06297/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Alterations to rear elevation at basement level comprising repolacement window and installation of double opening door.

    15 Sep 2026 Full applications
  • 26/06234/FULL Awaiting decision

    40 Grosvenor Place London SW1X 7HJ

    Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

    11 Sep 2026 Full applications
  • 26/06249/FULL 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 26/06250/LBC)

    11 Sep 2026 Full applications
  • 26/03576/FULL Decided

    15A Devonshire Terrace London W2 3DW

    Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)

    1 Jun 2026 Full applications