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Public Consultation on Proposals for a modest office terrace at 101 St Martin's Lane, London, WC2N 4AZ

Enhancing Wellbeing and Sustainability in the Heart of the West End
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Aerial View Looking South of the building

Cambridge Investment Partnership are bringing forward proposals for the redevelopment of Stanton House, providing

Modest, Office only terraces at 101 St. Martin's Lane

A modest, sustainable upgrade within a historic West End setting
On behalf of Saint Martin’s Lane s.a.r.l., we are proposing a sensitive refurbishment of the third-floor terrace at 101 St Martin’s Lane. The plans will transform a maintenance area into a discreet, green outdoor space for office workers, enhancing wellbeing and sustainability while protecting neighbours’ privacy. Located within the Trafalgar Square Conservation Area, the design takes a retrofit-first approach, improving rather than expanding, and will be shaped by feedback from local residents before submission to Westminster City Council.
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The site

The third-floor terrace at 101 St Martin’s Lane is part of a mixed-use building in the heart of London’s West End, surrounded by theatres, offices and residential properties.

Located within the Trafalgar Square Conservation Area, the building contributes to the area’s distinctive character but its upper terraces currently appear tired and purely a maintenance area, with minimal planting, exposed equipment and outdated finishes. Originally intended for maintenance access, the terrace offers little visual or environmental benefit to those working in the building or living nearby. Refurbishing this space presents a valuable opportunity to improve its quality and ensure the building remains attractive, sustainable and fit for long-term use.
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Images of the existing site

The proposals for 101 St Martin’s Lane have been developed by an experienced team with strong expertise in heritage and retrofit design.

Barr Gazetas lead on architecture, with Newmark providing planning advice. Specialist input from Clarke Saunders (acoustics) and Point2 (daylight and rights of light) ensures neighbouring amenity is protected, while BNP Paribas will oversee building management. Together, the team is committed to a discreet, high-quality upgrade that enhances wellbeing, sustainability and the building’s long-term future within its historic setting.

Our Proposals

Our proposals will provide up to 100 high-quality new homes, including 40% affordable housing, within a landscape-led design that reflects the character of Linton.

Nearly half of the site will become public open space, featuring play areas, walking routes and space for wildlife, creating a peaceful, sustainable and well-connected extension to the village.

A calm outdoor space for office workers
The terrace will become a small, peaceful area for third-floor office users during weekday hours only.

Protecting neighbours’ privacy and peace

A new 2-metre acoustic screen and soft planting will reduce overlooking, light spill and noise.

Clear rules to manage the space

No smoking, no music, and no evening or weekend use, with on-site management in place.

Greener and more sustainable design


The project reuses the existing terrace, adding planting that supports biodiversity and the Wild West End initiative.

Improving the building’s appearance

Worn railings and equipment will be replaced with greenery and high-quality finishes to create a more attractive outlook.

Designed with care for its surroundings

The proposals respect the area’s historic character while improving wellbeing and ensuring the building’s long-term future.
DSP seeks to find the most sustainable solution to secure the long-term future of every site.
DSP is committed to future-proofing every asset in the most sustainable way possible. In this case, introducing a new, highly flexible building offers the most appropriate and responsible approach, following detailed testing of all refurbishment and retrofit alternatives.

Design and Sustainability Approach

The proposals for 101 St Martin’s Lane will transform the existing third-floor terrace into a small, well-designed outdoor space for office workers. The current terrace, used mainly for maintenance, will be upgraded with new planting, high-quality finishes and a solid acoustic and privacy screen. These improvements will make the space more attractive and sustainable, while keeping its use modest and in line with the building’s character. A retrofit-first approach ensures that the existing structure is reused wherever possible, reducing waste and supporting Westminster’s environmental ambitions. The new planting will contribute to the Wild West End initiative, helping to increase greenery and biodiversity in this busy part of the West End.

Proposed plan
Proposed landscaping plan
Indicative Images
Indicative Images
Indicative Images
Indicative Images

Protecting Neighbours and Managing the Space

We understand how important peace and privacy are for those living nearby. The terrace design has been developed carefully to respect neighbours, with a 1.85 metre acoustic and privacy screen and soft planting that will reduce overlooking and noise. We have also introduced buffer zones at both ends of the terrace, positioning the usable space away from neighbouring residential properties as a positive and responsive design measure. No external lighting is proposed, helping to prevent light from shining into nearby homes. The terrace would be open from 8am to 8pm Monday to Friday, and from 8am to 7pm on Saturdays, these times will be subject to an agreed Operational Management Plan secured through the planning application. There will also be no smoking or music permitted. A clear management plan will make sure these rules are followed, supported by on-site supervision and a 24-hour contact number for residents should any concerns arise. Cleaning will also be managed quietly and responsibly, using a reach-and-wash system rather than abseiling.

Benefits for the Building and Community

These improvements will make a real difference to both the people who work in the building and the neighbours who live nearby. For office occupiers, the terrace will provide a small, peaceful place to get fresh air during the day. For residents, it means less light spill, more greenery and a softer, more pleasant view. The refurbishment will remove worn materials and exposed equipment, improving the appearance of the building and helping it sit more comfortably within its historic West End surroundings. Overall, the project represents a modest but meaningful upgrade that supports wellbeing, sustainability and the long-term future of 101 St Martin’s Lane.

Precedent Imagery

The Wider Team

Structureal engineer
Structureal engineer
Pre-redevelopment and circularity consultant
Pre-redevelopment and circularity consultant

We want to hear your views on the proposals for 101 St Martin’s Lane

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Join our Online Residents' Meeting

We’re inviting local residents to learn more about the proposals for 101 St Martin’s Lane
This will be a chance to view the plans, speak directly with the project team and share your thoughts before a planning application is submitted.
  • Thursday 11th December
  • 6-7pm
  • Online
RSVP here

Online
Webinar

  • Thursday 6th November 2025
  • 6pm - 7pm
Sign up here

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We are keen to engage with you and get your thoughts.