What to Do When a Seller-Financed Buyer Stops Paying

Grace periods vs. technical default: know the difference

A grace period is the contractual buffer between when a payment is due and when it is considered late. Most seller-financed mortgages in Puerto Rico specify a grace period of several days from the due date. Once that window closes without payment, the buyer is in technical default — even if the missed amount seems small.

Your contract should define exactly: the due date, the grace period in calendar days, what constitutes a "missed payment" versus a partial payment, and how many consecutive missed payments trigger the acceleration clause (which makes the full remaining balance due immediately). Without these terms spelled out in writing, a dispute about whether a default has actually occurred is much harder to resolve — in or out of court. If your current contract is ambiguous on any of these points, an attorney can help you draft cleaner terms before you need them.

Step 1: Document everything before you do anything else

When a payment does not arrive, your first impulse may be to call or text the buyer. That is a reasonable first step — but it must be accompanied by documentation. Write down the date the payment was due, the date you noticed the gap, how you contacted the buyer, and what was said. If you communicate by text or email, keep a copy. If you speak by phone, follow up with a written summary sent to the buyer the same day.

Documentation matters because if this situation escalates to court or formal foreclosure, your payment history is your primary evidence. A complete, timestamped record showing every confirmed payment, every late payment, and every gap gives you a clear factual basis that a handwritten ledger or a collection of screenshots cannot match. ATH Movil email confirmations, ACH receipts, and Zelle notifications are all usable evidence — but only if they are organized and complete from the start of the loan, not assembled in a hurry after a dispute begins.

Step 2: Send a formal cure notice

A cure notice is a written demand that gives the buyer a specified number of days to bring the mortgage current. Under Puerto Rico law, formally notifying a borrower of their default before proceeding with foreclosure is a required step — buyers have a legal right to cure their default, and that right must be communicated in writing. Your cure notice should state the total amount overdue (including principal, accrued interest, and any late fees), the date through which the calculation was made, a clear deadline for payment, and a statement that failure to cure may result in acceleration of the full loan balance.

Send the notice via certified mail with return receipt requested. This creates a verifiable delivery record that becomes part of your case file. Email or text alone are not sufficient for this step. If you are unsure about the required cure period or notice format for your specific mortgage deed (escritura de hipoteca), consult a Puerto Rico real estate attorney before sending. Getting this step wrong can delay or complicate any legal proceeding that follows.

Step 3: Negotiate a workout before escalating

Many private lenders move straight to legal threats after a missed payment. In most cases, that is the wrong call. Foreclosure in Puerto Rico is expensive, slow, and uncertain. A workout — a temporary or permanent modification of the payment terms — can resolve a short-term cash flow problem without either party spending money on attorneys or waiting years for a court ruling.

Common workout structures include: a forbearance agreement (pause or reduce payments for a defined period, with the arrears added to the end of the loan), a repayment plan (slightly higher monthly payments until the arrears are cleared), or a loan modification (a permanent adjustment to the interest rate or term length). Any workout must be documented in a signed written agreement. A verbal agreement between a private lender and buyer is not enforceable. If you reach an agreement, have an attorney put it in writing — the cost of that document is far less than the cost of discovering later that the terms were misunderstood.

Step 4: Foreclosure as a last resort

If the buyer fails to cure after formal notice and does not engage in good-faith negotiation, foreclosure may be your only remaining option. In Puerto Rico, private mortgage foreclosures proceed through the civil court system. The process requires filing a complaint with the Tribunal de Primera Instancia, serving the debtor properly, and obtaining a court judgment before any public auction can be scheduled.

The process is not quick. Puerto Rico's courts carry significant backlogs, and a contested foreclosure can take substantially longer than an uncontested one. Before filing, consult a Puerto Rico real estate attorney who has worked with seller-financed mortgages specifically. They will review your promissory note, escritura de hipoteca, and payment history to assess the strength of your position and advise on whether foreclosure is the right path or whether there are other remedies available.

How your payment records protect you throughout the process

Whether a default is resolved through a workout, a cure, or foreclosure proceedings, your payment records are your most valuable asset at every stage. A clean, exportable history of every payment received — with exact dates, amounts, and methods — along with your cure notice correspondence and any written workout agreements gives your attorney a clear factual foundation to work from.

This is where a tool like Lend. makes a concrete difference. Your amortization schedule, confirmed payment history, and 480.7A documentation (for reporting the interest received to your borrower, which they use for their Puerto Rico tax return) are all in one place and automatically updated as payments arrive via ATH Movil, Zelle, or ACH. When a dispute begins — or when your attorney asks for documentation — you are not assembling evidence from three different inboxes and a spreadsheet.