While the developer may cancel your contract in case you fail to pay your installments, they may only do so under the strict provisions of Republic Act (RA) 6552, otherwise known as the "Realty Installment Buyer Act" or the "Maceda Law." This law was created to protect buyers of real estate on an installment basis against onerous and oppressive conditions. More specifically, Section 4 of the said law provides that:
"Section 4. In case where less than two years of installments were paid, the seller shall give the buyer a grace period of not less than sixty days from the date the installment became due.
"If the buyer fails to pay the installments due at the expiration of the grace period, the seller may cancel the contract after thirty days from receipt by the buyer of the notice of cancellation or the demand for rescission of the contract by a notarial act."
Corollary thereto, in Priscilla Zafra Orbe vs. Filinvest Land, Inc., GR 208185, Sept. 6, 2017, through Associate Justice Marvic M.V.F. Leonen, the Supreme Court discussed the following:
"For cancellations under Section 4 to be valid, three (3) requisites must concur. First, the buyer must have been given a 60-day grace period but failed to utilize it. Second, the seller must have sent a notice of cancellation or demand for rescission by notarial act. And third, the cancellation shall take effect only after 30 days of the buyer's receipt of the notice of cancellation:
"Essentially, the said provision provides for three (3) requisites before the seller may actually cancel the subject contract: first, the seller shall give the buyer a 60-day grace period to be reckoned from the date the installment became due; second, the seller must give the buyer a notice of cancellation/demand for rescission by notarial act if the buyer fails to pay the installments due at the expiration of the said grace period; and third, the seller may actually cancel the contract only after thirty (30) days from the buyer's receipt of the said notice of cancellation/demand for rescission by notarial act."
In the instance, since you have paid installments for less than two years, for the seller to cancel your contract validly, you must first be given a 60-day grace period from the date the installment became due. If you fail to utilize this period to update your payment, the seller should send a notice of cancellation or demand for rescission by notarial act. Likewise, the seller may only cancel your contract only after 30 days from your receipt of the said notice/demand. In other words, the developer-seller cannot immediately cancel your contract unless it complies with the foregoing requisites. These are your rights under the law.
Source: Manila Times