All contracts, options, or other devices not based upon a substantial consideration, or that are otherwise employed to permit an unlicensed person to sell, lease, or let real estate, the beneficial title to which has not, in good faith, passed to such party for a substantial consideration, are hereby declared void and ineffective in all cases, suits, or proceedings had or taken under this chapter; however, this section shall not apply to irrevocable gifts, to unconditional contracts to purchase, or to options based upon a substantial consideration actually paid and not subject to any agreements to return or right of return reserved.

The main kinetic energy to receiving our rents on time is to implement a reasonable grace period, ours if 4 days, along with a late fee of $125 on day 5, then we send the late fee notice along with one of these options a 3 day notice, 7 day notice with a chance to ‘cure,’ and an ‘unconditional quit’ 7 day notice.Chapter 83.808 (3) A facility or unit owner may charge a tenant a reasonable late fee for each period that he or she does not pay rent due under the rental agreement.

http://www.nolo.com/legal-encyclopedia/state-laws-unconditional-quit-terminations.htmlMe.

All contracts, options, or other devices not based upon a substantial consideration, or that are otherwise employed to permit an unlicensed person to sell, lease, or let real estate, the beneficial title to which has not, in good faith, passed to such party for a substantial consideration, are hereby declared void and ineffective in all cases, suits, or proceedings had or taken under this chapter; however, this section shall not apply to irrevocable gifts, to unconditional contracts to purchase, or to options based upon a substantial consideration actually paid and not subject to any agreements to return or right of return reserved.Note the PRESUMPTION of brokering and the person has to PROVE they are not. 

I forgot, ask an unconditional lien waiver release for final payment.

All contracts, options, or other devices not based upon a substantial consideration, or that are otherwise employed to permit an unlicensed person to sell, lease, or let real estate, the beneficial title to which has not, in good faith, passed to such party for a substantial consideration, are hereby declared void and ineffective in all cases, suits, or proceedings had or taken under this chapter; however, this section shall not apply to irrevocable gifts, to unconditional contracts to purchase, or to options based upon a substantial consideration actually paid and not subject to any agreements to return or right of return reserved.Burden of proof is on the person to PROVE they are not acting as an unlicensed broker.

Do not forget that there are 4 types of lien waivers, the most stringent is unconditional release on final.

All contracts, options, or other devices not based upon a substantial consideration, or that are otherwise employed to permit an unlicensed person to sell, lease, or let real estate, the beneficial title to which has not, in good faith, passed to such party for a substantial consideration, are hereby declared void and ineffective in all cases, suits, or proceedings had or taken under this chapter; however, this section shall not apply to irrevocable gifts, to unconditional contracts to purchase, or to options based upon a substantial consideration actually paid and not subject to any agreements to return or right of return reserved.So, if your "teacher", "mentor" or whatever else they claim to be is proposing using contracts to broker real estate without being licensed or owning the property, they are teaching ILLEGAL practices at YOUR expense.

All contracts, options, or other devices not based upon a substantial consideration, or that are otherwise employed to permit an unlicensed person to sell, lease, or let real estate, the beneficial title to which has not, in good faith, passed to such party for a substantial consideration, are hereby declared void and ineffective in all cases, suits, or proceedings had or taken under this chapter; however, this section shall not apply to irrevocable gifts, to unconditional contracts to purchase, or to options based upon a substantial consideration actually paid and not subject to any agreements to return or right of return reserved.

here is what i've used in the pastDemand Promissory NoteFull Name: ______________________________________________________________________________Residence Address: _______________________________________________________________________(Hereinafter referred to as the Borrower/s)Full Name: ______________________________________________________________________________Residence Address: _______________________________________________________________________Relation to Borrower: ______________________________________________________________________(Hereinafter referred to as the Co-Maker/s)Full Name: ______________________________________________________________________________Residence Address: ________________________________________________________________________(Hereinafter referred to as the Lender)For value received, the Borrower hereby unconditionally promises to pay to the order of Lender the sum of ______________________ (PhP________) together with interest accrued at the rate of __________percent (______%) per month on any unpaid balance.Payable on DemandThe entire outstanding amount shall become immediately payable upon demand by the Lender or holder of this Note, but demand shall not be made before the _______day of _____________________20____.Place of PaymentPayment shall be made at the above stated address of the Lender or at such place as may be designated from time to time in writing by the Lender or holder of this Note.