(a) On the request of property owners whose property is not in any service area but is in an area that is contiguous to a service area, the sanitary commission may extend a project to include the properties that are the subject of the request.
(b) The sanitary commission may require that the property owners agree:
(1) To pay benefit assessments;
(2) To pay connection charges; and
(3) To any other condition that the sanitary commission makes.