Sales & Purchases

Partner

Jonathan Gross

Jonathan has more than 30 years experience and continues to practice commercial real estate law although in recent years he has become more interested in the protection and development of asset classes in the digital world.

As legal adviser to some of the UK’s largest family offices, private companies and entrepreneurs he is trusted by his clients for his depth of experience in investment, joint ventures and his ability to effect introductions at the highest level. He is also particularly active with clients involved in the arts and finance.

Regarded by his loyal clients as a deal maker his clients rely upon him for his tactical and strategic approach to getting things done.

Formerly at Allen & Overy and SJ Berwin & Co. Jonathan co-founded Quastels with David Quastel in 1998 and is actively involved in the practice management of Quastels .

He has a degree in law from City Business School and Trinity College, Cambridge.

Partner

Michael Haringman

Michael Haringman is the firm’s Senior Partner. Michael advises primarily on commercial matters, commercial property transactions and trusts. His clients include global brands and retailers whom he advises on all commercial and strategic legal aspects of their operations, including acquisitions and disposals of both businesses and real property, lettings, joint ventures and funding requirements.

Over a period of 40 years Michael has developed an exceptional and trusted relationship with his clients, who rely on his insightful analytical approach to give them “complete peace of mind” . Michael serves on the Board of a number of these clients.

Partner

David Quastel

David Quastel is the firm’s Managing Partner and is a versatile and highly skillful commercial/property lawyer with special expertise in real estate development finance and structuring complex property related joint ventures.

David’s forte extends well beyond providing technical legal advice and clients have come to value and rely upon his hands-on strategic advice at the earliest stages of planning and structuring complicated property, corporate and international transactions.

Clients appreciate David’s strategic insights and absolute attention to detail and describe him as “a formidable negotiator”, “a unique problem solver”, “a driving force in concluding a deal satisfactorily” and a “wonderful technician”.

Partner

Owen Walsh

Owen is the co-head of the Commercial Property team. He is recognised by the Legal 500 and acts for clients in most commercial sectors, including leisure, luxury retailers, professionals, hotels, institutional and local authorities.

Owen deals with all types of commercial property transactions including sales and purchases, business tenancies, development, property finance and asset management.

Testimonials from clients include:

‘Every transaction has sailed through without a hitch, due to Owen’s impeccable attention to detail, coupled with a strong commercial understanding of the market.’

‘Owen Walsh deals with all my transactions and is always there day and night. His communication is brilliant, he is extremely thorough with research and he develops leases to suit my style.’

Senior Associate

Roberta Organ

Roberta is an experienced real estate lawyer specialising in all aspects of commercial property. Roberta advises clients on a wide range of property matters including acquisitions and disposals, landlord and tenant transactions and real estate finance. Roberta works across many commercial sectors and acts for clients in retail, leisure and hospitality as well as private investors, corporate occupiers, lenders and developers.

Roberta qualified as a solicitor in 2014 and joined Quastels as a Senior Associate in 2021.