(1) “Billing period” means the payment cycle agreed to by the parties, or, in the absence of an agreement, the calendar month within which the work is performed.

(2) “Contractor” includes, but is not limited to, an architect, engineer, real estate broker or agent, subcontractor or other person, who enters into any contract with another person to furnish labor and/or materials in connection with the erection, construction, completion, alteration or repair of any building or for additions to a building, by such contractor, or for the sale to such other person of any lands and premises, whether owned by such contractor or another, upon which such contractor undertakes to erect, construct, complete, alter or repair any building or addition to a building.

(3) “Moneys or funds” includes, but is not limited to, the entire amount of all moneys or funds received by a contractor, as defined in this section, who, being the owner of the legal title to lands and premises, receives, in connection with a contract for the sale thereof and for the erection, construction, completion, alteration or repair of any building or addition thereon by such contractor, any moneys or funds by way of a loan or advance upon the security of such lands and premises for the purpose of such erection, construction, completion, alteration or repair, or who receives from the other contracting party or vendee any deposit or sum of money on account of the purchase or contract price, and no part of such moneys or funds shall be deemed or construed applicable to the payment of the cost or selling price of land, unless that part of the contract price or selling price applicable to cost or selling price of land, be specifically so stated in the contract.

(4) “Owner” means a person who has an interest in the lands or premises upon which a contractor has undertaken to erect, construct, complete, alter or repair any building or addition to a building.

(5) “Person” shall include a corporation, partnership, limited liability corporation or partnership, business trust, other association, estate trust, foundation or a natural person.

(6) “Subcontractor” means a person who enters into a contract to furnish labor and/or materials to a contractor.