Since no one has responded as yet, I can tell you that my company, Prudential NJ Properties does property management - in fact - I happen to handle manage 2 homes - 1 in Cranford and 1 on Livingston, where my office is located.
As far as whether that management service is offered closer to your area, I can't say for sure.
We do have offices in Metuchen, Hillsborough and Manalapan, which is getting closer to you, so you might want to give them a call.
Our corporate offices are located in Somerset, and so is our accouting department - which handles all the paperwork (property management contract/agreement) and processing of the rent/repair monies, security deposits, etc.
Feel free to reach out to me for more specific information and fees.