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Image courtesy of White Associates                                                                        


Tri-Sail Towers



Cheergrey Properties Limited








The three towers (11, 9, and 7 storeys) include 9,290m2 of offices and 3,252m2 of retail space and underground parking and landscaping.

Tri-Sail Towers is located next to London Stansted airport and intends to offer premium office space.


Conduct a BREEAM Offices Design & Procurement and Post-Construction Assessments and advice on achieving a “Very Good” sustainability rating.



We were appointed by Cheergrey Properties as sustainability consultants to ensure that both BREEAM assessments for this multi-million pound development—during design and post-works completion—obtain a “Very Good” environmental and sustainability rating.


We have been involved throughout the design phase of the project with regular meetings and communication with the client and design team. We have issued updated BREEAM Offices reports summarising the status of the project in terms of its’ sustainability credentials, advising on the future steps to ensure the “Very Good” rating is met. We have provided guidance as to the type of actions required by each design team member and what specifications are needed, as well as the documentation that still needs to be produced.


Particular importance was paid to noise and ventilation issues due to the proximity of the airport, as well as renewable energy.

Did You Know?


Air conditioning systems can harbour harmful chemicals and bugs such as Legionella, moulds, and particulates that are released back into the ducts from the filter, especially when the weather fluctuates. In air-conditioned buildings, many more people suffer from the Sick Building Syndrome.


Sick Building Syndrome has been identified in 30% of non-domestic buildings and leads to higher levels of worker sickness, absenteeism, staff turnover, and a downturn in productivity.












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