LISTING FORMS (Mandatory Listings): Listing Agreements of properties located within Middlesex. A listing agreement is a contract between homeowners and brokers that legally establishes how a realtor will find a property buyer on the seller's behalf.List In Middlesex MLS, Realtor. For a consultation, give us a call at 781-843-2200 or fill out our contact form online. Contact Us. Free Consultation 781-843-2200. Way to fill out the forms. Get the latest listings with instant updates. Fill out the form below and we will contact you with more info. Morris County news and join the discussion in the forums. Kolpan told cathy contacted several issues that agreement is listed on nj local listings.