The minimum statutory requirements for a rent demand required by R.P.A.P.L. Section 711 in order to maintain a summary proceeding are that petitioner make either a three day personal demand or serve a written demand on the tenant for rent alleged to be owed. If a written demand is made, the demand must be served pursuant to the provisions of R.P.A.P.L. Section 735 which requires the written notice be personally delivered to the respondent. If, after reasonable application, personal delivery of the demand cannot be effectuated, then the demand must be served by substituted service on a person of suitable age and discretion or by conspicuous placement on the entrance door of the premises at issue followed within one day by first class and certified or registered mailing. R.P.A.P.L. 735(1). The parties, however, may contract to different and more stringent demand provisions in their lease than those contained in the statute. Hendrickson v. Lexington Oil Co., Inc., 41 AD2d 672 (2nd Dept. 1973); Margis Realty Co. v. Belaguer, N.Y.L.J., 3/24/92, p.21, Civ. Ct., J. Wendt); PAK Realty Associates v. RE/MAX Universal, Inc., 157 Misc 2d 985 (Civ. Ct. Queens Co.1993). Pursuant to the parties' written lease the Petitioner was required to serve a five day written demand for rent on the Respondent prior to the commencement of the summary proceeding. Paragraph 19 of the lease requires as follows: