"Real estate broker", hereinafter referred as broker, any
person who for another person and a fee, commission or
other valuable consideration, or with the intention or with
the expectation of upon the promise of receiving or
collecting a fee, commission or other valuable
consideration, does any of the following:- sell, exchange,
purchases, rents or leases, or negotiates, or offers, attempts
or agrees to negotiate the sale, exchange, purchase, rental
or leasing of any real estate, or lists or offers, attempts or
agrees to list any real estate , or buys or offers to buy, sells
or offers to sell or otherwise deals in options on real estate,
or advertises or holds himself out as engaged in the
business of selling, exchanging, purchasing, renting or
leasing real estate, or assists or directs in the procuring of
prospects or the negotiation or completion of any
agreement or transaction which results or is intended to
result in the sale, exchange, purchase, leasing or renting of
any real estate.