Skip to main content Skip to footer

Astrea appoints Colliers to manage prestigious Berkeley Square Estate


Colliers has been awarded a prestigious mandate from Astrea to provide property management services to the Berkeley Square Estate.

Following a competitive tender process, Colliers was selected to take on the mandate for the Central London portfolio which comprises several historic buildings and landmark properties in Mayfair and Knightsbridge.

Stephanie Handley, Head of Property Management, ESG & Placemaking at Astrea, said: “As custodians of this significant London Estate, we were looking for a team aligned with our thinking that will deliver the innovation that our occupiers are currently seeking for their workplaces,  as we continue to reposition the portfolio. Colliers’ match this ambition and will deliver a tailored service at asset level and adapt quickly to meet changing occupier demands.”

Mark Jarrett, Head of Property Management at Colliers, added: “We are delighted Astrea have chosen Colliers and are looking forward to helping them deliver services worthy of the most prestigious estate in London.

At Colliers, we pride ourselves on our ability to understand the unique challenges facing landlords today, from the necessity to reach Net Zero through to floorplate flexibility and future-proofing. Above all else, we put the needs of the occupier first, developing bespoke solutions for each building and creating communities where our tenants can thrive. Our expertise-based approach to the three pillars of management - customer experience, ESG and technology - means we have the agility and experience in the team to deliver on our promises.”

Colliers will officially take over management of the Berkeley Square Estate from Avison Young in the New Year.

View Our Property Management Services

Related Experts

Mark Jarrett

Head of Professional Services

Investment Property Management

London - West End

Mark joined Colliers International in 2001

Mark is Head of the Investment Property Management Department

Mark is Head of the Professional Services Division


Charles Church (residential developers) 1988-1990

Barnett Baker & Co 1990 - 1995

CBRE (formally St Quintin) 1996 - 2001


View expert

Holly Brown

Head of Client Strategy

Investment Property Management

London - West End

Holly is a Director in the Investment Property Management (IPM) team and  Head of Client Strategy. She works with IPM and National Capital Markets to drive business development and client management and enhance our service offering for our key clients.  

Holly graduated from the University of Reading with First Class Honours in 2011 and qualified as a chartered surveyor in 2013 at niche hotel investment firm, Gerard Nolan and Partners. 

Holly joined CBRE's High Street Retail Investment team in 2014, and transitioned into their Client Care team in 2016 to develop the Retail & Institutional Investors Client Care programmes. 



View expert

Suzy Simpson

Head of Content, Communications and PR


London - West End

As Head of Content, Communications & PR for Colliers in the UK, I am responsible for driving the strategic direction of corporate communications, media relations, and the programming and production of multi-channel content to engage external and internal audiences across the UK.

Get in touch for help with: 

  • Content Communication Strategy 
  • Media Relations
  • Corporate & Internal Communications
  • Media Training & Personal Brand Training


View expert