Vanguard Realty Group

1390 Piccard Drive
Suite 120
Rockville, MD 20850
Tel: 301.795.1400
Fax: 301.795.1401

Residential Team

Allison Roseberry
Director of Corporate Services

In addition to her Human Resource Management role, Mrs. Roseberry oversees Vanguard’s office administration team. Since joining Vanguard in 2000, Mrs. Roseberry has consistently built upon her extensive knowledge of office administration, property management, marketing and leasing. Mrs. Roseberry holds a Bachelor of Science degree from the University of Maryland with a major in Human Resource Management and a minor in Management Studies.
Jonathan E. Santamaria
Director, Information Technology

Mr. Santamaria has held various key positions with select Fortune 500 companies whose focus is the operation and finance divisions of real estate, to include development and sales in the commercial, residential, and industrial sectors. He has worked in finance, accounting and operations for over 22 years and has several years of experience in staffing and human resources. His expertise lies in matching functional business requirements to service-oriented organizations such as banking, real estate, and travel & leisure. Mr. Santamaria has staffed and managed various consultants, analysts, IT personnel, and end-users in the areas of accounting, customer service, human resources, sales, and marketing. Mr. Santamaria is CMA and CCM certified. In addition, he is a certified network administrator for Microsoft and Novell Network systems and as a trainer for Microsoft and Lotus Office products. He was educated at San Beda College, Manila, Philippines, and graduated cum laude with a Bachelor of Science degree in Commerce. He is accredited and is an active member of IREM, AOBA, and AFP.

Professional Licenses, Accreditations and Certifications
Accounting Management (CMA)
Cash Management (CCM)
Certified Administrator for Windows 95/98/XP & Novell Network System
Certified Trainer for Microsoft Office Products, Lotus 97 Products, Basic Programming, Oracle Financials Application release 11i and 10.7 (General Ledger, Accounts Payable, Accounts Receivable, Fixed Assets, Cash Management and Treasury)
Gregory Klein
Managing Director, Commercial Leasing & Brokerage

In addition, Mr. Klein provides real estate advisory services to developers, owners/investors, landlords and tenants, and is experienced in land acquisition and land assemblage.  Mr. Klein has been involved in transacting commercial real estate deals since 1986, and joined Vanguard Realty Group in 2003.

His previous roles include Vice President for the Grubb & Ellis Company, where he successfully marketed office, medical, industrial, and Research & Development properties for major developers, and provided tenant representation services to both local and national companies. Mr. Klein is a native of Montgomery County, Maryland.
Luis J. Guevara, Jr.
Director, Business Development & Integration

Prior to joining Vanguard, Mr. Guevara held the position of Vice President, Property Management for The Bernstein Companies, a privately-owned third generation real estate firm in Washington, DC. During Mr. Guevara’s nine years with Bernstein, he was responsible for overseeing a team of management and engineering professionals, and a portfolio of approximately 2.5 million square feet of institutional grade assets.

Prior to Bernstein, Mr. Guevara was a member of the Property Management Division of Lowe Enterprises mid–Atlantic, a national real estate company. Mr. Guevara is a Real Estate broker licensed in Maryland, Virginia and the District of Columbia, and has over 30 years of experience in the commercial real estate services field. He is an active participant in multiple volunteer organizations, to include serving on the Volunteer Staff of the Armed Forces Foundation, supporting several of their key annual programs.
Seymour Zuckerman

Mr. Zuckerman’s career, which began over 45 years ago in New York, includes such experiences as an officer and director for two public companies developing major shopping centers in Canada, and was President of Polinger Company, Zuckerman Kronstadt, and President of the Northeast Region for Pinnacle Realty Management Company. In addition, he has been appointed by the Court as Receiver for a number of properties in the National Capital area. Mr. Zuckerman holds a Bachelor of Science degree from The University of Maryland as well as an L.L.B. from the University of Maryland Law School, and a Property Management license in the District of Columbia.

Mr. Zuckerman has served on the Board of Directors for AOBA, and remains active as a Board member for several nonprofit organizations, to include The Hebrew Academy, The National Hebrew Hospital of Denver, the Potomac Place Condominium Association, and World ORT.

Professional Licenses, Accreditations and Certifications
Admitted to Maryland and New York Bar
Director, Apartment and Office Building Association
Montgomery County Landlord Tenant Commission
Washington, D.C. Association of Realtors
Former Director, Bethesda-Chevy Chase Chamber of Commerce