Project Management, Partner

James is a chartered surveyor renowned for transforming ambitious ideas into realities. Specialising in project and development management, he has successfully led complex refurbishments and redevelopment initiatives from inception to completion. James founded Hollen, and subsequently co-founded Hollen+, elevating industry standards and bringing innovative solutions to the forefront.

Project Management, Partner

Tom is a chartered surveyor and project management expert. Starting at Bollingbrook in 2014, he earned his MRICS with Colliers and later joined Blackburn & Co, handling projects up to £120m. Tom has worked on major cut-and-carve and fit-outs across EMEA, including a 300,000 sq ft refurb in Prague. He’s all about managing tricky, multi-stakeholder projects and joined Hollen in 2020.

Hollen+ Partner

Greg co-founded Hollen+ to bring together his 15 years of client-side, value-add asset management experience with his passion for sustainability.

It’s where his expertise in adding value to commercial real estate meets his mission to make the world a greener, better place—one project at a time!

Project Manager

Siobhan is a project manager with global experience! She kicked off her career at Turner Construction in NYC, gaining 6 years of hands-on experience with everything from cut-and-carve redevelopments to CAT B fit-outs.

After delivering 1 million+ square feet at WeWork, she joined Hollen in 2021, managing complex projects with contract values up to £130m in the UK. 

Project Manager

Harry earned his MSc in Real Estate from Henley Business School in 2023 and jumped right into action at Hollen as a Project Manager. He’s been busy delivering everything from Shell and Core to CAT A and CAT B projects for major clients like WPP, Revantage, and Bauer Media. Harry's handled offices, recording studios, warehouses, retail, and mixed-use projects across the UK, with budgets up to £7 million.

Project Manager

Laura is a chartered surveyor and joined Hollen as a Project Manager in June 2024, following her time at Montagu Evans. Laura is currently managing several CAT B office fit-out projects, overseeing them from the initial stages through to client handover. Laura is passionate about the process of transforming spaces and is committed to expanding her expertise in project management with each new challenge.

Project Manager

David is a chartered surveyor specialising in project and development management for commercial, residential, and mixed-use schemes up to £50 million. With projects across the UK, EMEA and APAC, he works with clients like WPP, LaSalle IM, Abrdn, The Langham Estate, DEFRA, and Network Rail.

His expertise spans offices, hotels, BTR, retail, and mixed-use sectors.

Project Manager

Adib is a seasoned project manager with a knack for delivering standout projects across office, hotel, student, and residential sectors (BTR & PRS) on contracts up to £115 million. He’s led high-profile change of use schemes, including the conversion of London’s iconic Grade II listed 55 Broadway from office space into a hotel. Adib’s passion lies in delivering efficient, profitable results for his clients, making sure every project hits the mark.