George Fakhir

Parametric Development Group founding partner, George W. Fakhir also serves as CEO of William & Sons Group, a privately held, full-service, real estate management, development, advisory and investment company.
In business for more than 40 years, Williams & Sons Group is an established firm which manages a balanced portfolio of opportunistic real estate investments, acquisitions and assets in diverse markets.
Fakhir oversees a talented and experienced group of real estate executives and associates. The team works in tandem, focusing on securing and growing strategic assets and increasing long-term stability and profitability.

Frank LePera

A founding partner at Parametric Development Group, Frank LePera is a veteran commercial and residential real estate executive with experience in acquisitions, development, asset and property management, office leasing and finance.

Currently, Mr. LePera is a Senior Director at Cushman & Wakefield’s New York City office where he is responsible for investment sales and corporate advisory work. Prior to joining Cushman & Wakefield, Mr. LePera was the senior managing director at Cogswell Realty LLC where he was responsible for acquisitions, sourcing of equity and debt, and asset management, including the firm’s one-million-square-foot office portfolio and development sites in Newark, New Jersey. Previously, he was the assistant managing director at Trinity Church Real Estate, responsible for office, retail and industrial leasing at the firm’s six million-square-foot portfolio in Hudson Square. He began his career in finance, working at International Corporate Banking, a predecessor of JP Morgan Chase Bank.

Stewart Osborne

Chief Operating Officer

Mr. Osborne has more than 20 years experience as a developer and construction manager – having built a range of projects in Africa, Asia, the Caribbean, and North & South America. Mr. Osborne is responsible for adding and creating value through all aspects of the development process – from project feasibility analysis, construction, marketing and sales. Mr. Osborne’s leadership role in the analysis of projects, budgeting, scheduling, and construction coordination ensures successful project results. Prior to founding Parametric Development Group and NAVA, Mr. Osborne worked as the Director of Development for Corigin Real Estate Group, a privately owned multi-platform real estate investment and development company. Here he participated in the development and management of over 2.3 million sf. of real estate projects. Notably, Mr. Osborne directed all aspects of the development and sale of CANCOlofts, a 1 million sf multi-phase, mixed use development. Other remarkable projects Mr. Osborne has managed include the Virgin Spa @ Natirar, Sir Richard Branson’s only hospitality venture in the USA; THE LOFT, an ultra-luxury SoHo loft conversion; and the Nokia Theater @ Times Square, the award-winning music venue for the Anschutz Entertainment Group. NAVA has completed a 30,000 square foot condominium development in Cobble Hill Brooklyn and together with their partners at Parametric are currently developing two midrise condominiums in Manhattan NYC. Mr. Osborne attended the University of Pennsylvania’s Masters of Architecture program, where he was honored with the prestigious Van Alen Fellowship

David Ruff

Chief Creative Officer

Mr. Ruff is a founding partner of Parametric Development Group and NAVA where he heads the architecture and design team from project ideation through construction management. Ruff is responsible for the visionary aesthetics that distinguishes NAVA projects. Prior to co-founding NAVA, he was President of Design Laboratories LLC, an international architecture and design firm with projects in the US, Europe, India and China. Ruff’s work has been published in Architectural Digest, Architecture Magazine, Interior Design Magazine, AIA Oculus, Contract Magazine and Mann Report among others. Notably, he was the principal responsible for the Red Bull North American HQ., the Brooklyn Academy of Music Capital Improvement Project, a 13 acre redevelopment master plan for downtown Las Vegas, design aspects of the Track and Field Hall of Fame and over 500,000 square feet of high end private residential. NAVA has completed a 30,000 square foot condominium development in Cobble Hill Brooklyn and together with their partners at Parametric are currently developing two midrise condominiums in Manhattan NYC. Ruff has taught graduate studios at the Pratt Institute and Parsons School of Design in New York City. He holds a BSE in Mechanical Engineering from Duke University, studied graduate architecture at Princeton University and Columbia University where he earned his Masters of Architecture. He is a Registered Architect in New York and Connecticut and is a member of the American Institute of Architects.

Clifford Stein

Founding partner of Parametric Development Group, Cliff Stein is a respected accountant, attorney and real estate developer. For the past 30 years, he has successfully managed, purchased, repurposed and sold commercial properties in several states.

Mr. Stein formed Savitar Realty Advisors in 1987 to provide consulting and advisory services to lending institutions and government agencies on workouts, restructurings and value enhancements on their non-performing properties. Previously, he served as a law clerk for U. S. Bankruptcy Judge Joseph A. Gassen and worked as partner and director of acquisitions for a private, Miami-based real estate investment company where he analyzed, negotiated and acquired non-performing real estate assets.

Mr. Stein’s extensive real estate accomplishments include transforming the legendary Lincoln Theatre in South Beach from a historic movie theater and symphony hall into a popular mixed-use building featuring retailer H&M’s flagship store. Former Florida Governor Lawton Chiles appointed him to serve as a Commissioner on the Florida Real Estate Commission, where he served two terms and was elected as Chairman of the Commission in 1996.  Mr. Stein was also appointed to the Board of Directors of Cenvill Development by the FDIC to represent its interest as the single-largest shareholder of the former $500 million publicly-traded real estate concern.

He holds a Juris Doctor from University of Miami and Bachelor of Science in finance and accounting from American University.