Message from Mercer County Park Commission: Mercer Lake will be closed to boat traffic from Nov. 18 – 25 due to PSE&G over-water construction. 

Buildings & Grounds

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Karl Thomas, General Supervisor of Trades

 Phone:  609-989-6181
 Fax:  609-984-9013
 Mail:  640 S. Broad Street
   P.O. Box 8068
   Trenton, NJ 08650-0068


Peter Berkin, Supervisor of Trades

Phone: 609-530-7506
Fax: 609-989-6032
Mail: 640 S. Broad Street
P.O. Box 8068
Trenton, NJ 08650-0068


The Division of Buildings & Grounds provides safe, secure and well maintained buildings and grounds for the general public, residents and employees of Mercer County. The staff strives to provide these services in a courteous, professional and responsible manner. The Buildings & Grounds Maintenance Department provides physical support, custodial and maintenance services to 37 different county-owned facilities and several county offices located in leased areas. Among other responsibilities, department staff ensures building safety and the optimal performance of building systems by providing preventative maintenance and repair of mechanical, HVAC, electrical, plumbing, building security systems and interior/exterior repairs and renovations.