
135 Park Street
The development is an 12 storey building comprising 13,475m2 (NIA) of office area over basement to eleventh floor and 141m2 of retail area located on ground floor.


St Jame’s Market Phase 2 will comprise an approximate 300,000ft² mixed use development. At the basement and ground floor will be retail and restaurant units together with two office receptions. Levels 1 to 7 will comprise new office accommodation served by two separate cores in order to provide flexibility for future leasing options. There will be two levels of basement housing plant, waste facility, cycle stores, changing room and shower facilities together with the usual building management space. Further plant areas are provided at roof level including for retail and office tenant’s use. At various levels of the building will be external terraces with a combination of private and communal use.
Sustainability is very high on both Client’s agenda including the team targeting BREEAM ‘Outstanding’ rating for the office accommodation and ‘Excellent’ rating for the retail space, along with a WELL Gold rating. The Crown Estate Development Sustainability Principles are being adopted throughout together with maximising amenity, biodiversity and renewable energy solutions.
The MEP services strategy for heating and cooling in all areas aligns with The London Plan in terms of utilising air source heat pumps with no burning of fossil fuel. In addition, the project is the “pioneer” related to the Design for Performance initiative and NABERS UK rating.

The development is an 12 storey building comprising 13,475m2 (NIA) of office area over basement to eleventh floor and 141m2 of retail area located on ground floor.

Watkins Payne carried out the Independent Design Review role for Seal House, a commercial office development, located in central London.

The Grade II listed building at 2 New Burlington Street has been redeveloped to offer 5,000ft² of high quality residential accommodation, for which Watkins Payne supplied building services engineering and energy consultancy to achieve an EPC D rating.

10 Fetter Lane needed some freshening up for marketing, so the first floor offices were to be modernised as a show stopper with a contemporary exposed services design and improved floor to ceiling height.

BRIT Insurance took 5 floors of the Leadenhall building with views over Tower Bridge and the Thames. The 60,000ft² of high quality office accommodation was fitted out to Category B.

The office building is targeting Energy Performance Certificate (EPC) rating of A.