Building Maintenance in Long Island

At North Hills Office Services, Inc., we have been providing building maintenance services in Long Island for over 48 years. Our commitment is to provide quality janitorial services at the lowest possible cost for our clients.

Zip codes we serve in Suffolk County: 00501, 00544, 11701-11708, 11713, 11715-11722, 11724-11727, 11729-11731, 11733, 11738-11743, 11745-11747, 11749-11752, 11754, 11757, 11760, 11764, 11766-11770, 11772, 11775-11780, 11782, 11784, 11786-11790, 11792, 11794-11796, 11805, 11901, 11930-11935, 11937, 11939-11942, 11944, 11946-11965, 11967-11973, 11975-11978, 11980

Zip codes we serve in Nassau County: 11001-11003, 11010, 11020-11027, 11030, 11040-11044, 11050-11055, 11096, 11099, 11501, 11507, 11509, 11510, 11514, 11516, 11518, 11520, 11530, 11531, 11535, 11536, 11542, 11545, 11547-11561, 11563-11566, 11568, 11569, 11570-11572, 11575-11577, 11579-11583, 11588, 11590, 11592-11598, 11596, 11598, 11599, 11709, 11710, 11714, 11732, 11735-11737, 11753, 11756, 11758, 11762, 11765, 11771, 11773, 11774, 11783, 11791, 11793, 11797, 11801-11804, 11815, 11819, 11853-11855