Experts In Facility Maintenance

United Building Maintenance Associates has over 30 years of experience delivering impeccable facility maintenance at very competitive rates. We take a pro-active approach to keeping our clients’ facilities in optimum working condition and appearance. With an eye toward the future, we are committed to innovation, supporting LEED certification requirements and sustainable practices. Allow us to manage the details of your property, so you can focus on asset management and building your business.


Sharad D. MadisonPresident and CEO
Sharad Madison, President, CEO and Chairman of United, a company founded and owned by his late father, Oliver Madison, joined United in 1994 to help build the company into an organization that currently employs over 800 employees. United is the first minority cleaning company to service a “Class A” building as a prime contractor in New York City. The company services numerous major corporations such as: J.P. Morgan Chase, TIAA-CREF, TD Bank, Citigroup, and MetLife.

Prior to joining United, Mr. Madison worked for Coram/Curaflex Healthcare as a Regional General Manager, covering New Jersey, Pennsylvania and Delaware. He was responsible for tripling the patient base and procuring the largest managed care contract in the company. In addition, he led his region to one of the highest Joint Hospital Accreditation scores in the country.

Previous to his tenure at Coram/Curable Healthcare, Mr. Madison worked for HMSS, Inc. as an Area Sales Manager. He was awarded the President’s Award in 1990 and appointed to the President’s Advisory Council and National Marketing Advisory Council in 1991.

Preceding his tenure at HMSS, Inc., Mr. Madison worked for ICI Pharmaceuticals Group where he held posts as a Pharmaceutical Sales Representative, Regional Recruiter and lastly, Oncology Specialist.

Mr. Madison graduated from Morehouse College in May 1985 with a degree in Biology. He has also attended the Amos Tuck School at Dartmouth Entrepreneurship Program and the Kellogg School of Management Entrepreneurship Program.

Mr. Madison sits on the board of the Boys and Girls Club of Newark, The Board of Governors of TPC at Jasna Polana in Princeton and the Board of the Accident and Prevention Safety Group in New York City. Mr. Madison formally held the following positions: member of the Minority Business Input Committee of the Council, member in the first class of the Center of Excellence roundtable of the NMSDC and member of the Diversity Advisory Committee for Goldman Sachs. He is also past chair for the New York Area for the Amos Tuck School of Minority Entrepreneurship Program.

Harry A. LasterExecutive Vice President
Mr. Laster is currently responsible for Business Development, Client Relations, Operations and Labor Relations at United. He has spent in excess of twenty five years providing janitorial and related services to clients in New York City, the Metropolitan Area, and Eastern Pennsylvania.

His experiences have crossed many different industries and many types of facilities. Ranging from small retail accounts to multi-million square foot buildings, the clients Mr. Laster has serviced properties for include Corporate Headquarters, Multi-Tenant Properties, Health Care Facilities, Performing Arts Venues, and Schools. During his tenure he has held senior positions in several major companies in our industry.

Mr. Laster’s professional experience is supported by academic achievements including a Bachelor of Arts from Queens College and a Masters of Business Administration from Adelphi University.

Rob BergerVice President
Rob Berger has over 20+ years of experience in the maintenance and management field.  After his service in the United States Marine Corps, Rob entered the industry as an Operating Engineer.  Working his way up to the level of Director of Engineering, Rob became well versed in Union and Non-Union operations, for both Engineering and Janitorial.

Rob has overseen engineering and janitorial for companies in several states, including New York, New Jersey, Pennsylvania, Maryland and Virginia.

In 2018 Rob was the founding Chair and is the Current Co-Chair of BOMA Philadelphia’s Engineering Committee.

Lucia HerreraVice President of Finance
Lucia leads Accounting Operations and Treasury, and assists with Human Resources and Office Management. Lucia has more than 20 years of experience in all levels of accounting. She oversees all financial activities, reporting on revenue, training accounting staff, budgeting, disbursing funds to departments, managing risk, implementing policies and all accounting software to improve financial processes. Lucia earned a Bachelor’s degree in Business Administration from PUCMM in the Dominican Republic.
Giovanni AlavenaVice President of Operations
Giovanni joined United Building Maintenance in March 2013. He is UBM’s Director of Operations, with over twenty-five years experience serving as a representative to corporate facility, engineering and maintenance departments. In his position he has provided corporate training, field management and client retention strategies. His unique experience includes both managing small business enterprises and large corporate environments for the provisioning of on-site janitorial services. Giovanni speaks both Spanish and English.

Our Valued Clients

Our long-standing commitment to quality has earned a loyal following among Fortune 500 companies in the Tri-state area. At United, we pride ourselves in providing time-tested results you can depend on.


United provides safe, efficient, high-quality facility maintenance, allowing you to focus on your bottom line while we maintain the value of your property. We’d love to learn all about your unique needs, so be sure to get in touch today.