Due diligence is not just about confirming that everything is in order — it is also about recognizing when something is not. The warning signs in property transactions are often clear when you know what to look for. None of the red flags listed here require panic or assumption of bad faith — but all of them require that the transaction pause until the issue is understood and resolved, or abandoned if it cannot be. Acting on a red flag means asking questions and seeking professional guidance, not proceeding and hoping for the best.

The registered owner on the title does not match the seller’s identity. If the name on the Certified True Copy from the Registry of Deeds does not match the identity of the person offering to sell, this must be explained and documented before any further action. A name discrepancy without a clear legal explanation — a valid SPA, a court order, or an estate document — is a fundamental red flag.

The seller cannot produce the owner’s duplicate copy of the title. A seller who does not have their own copy of the title may have pledged it as mortgage collateral, or the title may be involved in a dispute. The absence of the owner’s duplicate should be explained clearly and verified through the Registry of Deeds before proceeding.

Active annotations on the back of the title. Any uncancelled annotation — particularly adverse claims, lis pendens notices, or active mortgages — requires professional legal review before the transaction proceeds. Do not rely on the seller’s explanation of what an annotation means.

The title number on the seller’s copy differs from the Registry of Deeds record. A mismatch between the seller’s copy and the official Registry of Deeds record is a serious indicator of a potentially forged or altered title. Stop and seek legal advice immediately.

Seller claims to be an heir but cannot produce estate settlement documents. An heir has no individual right to sell estate property without formal settlement. If a seller describes themselves as an heir but cannot show documents proving the estate has been legally settled and the title transferred, do not proceed.

The SPA presented has expired, is undated, or was not notarized. A defective SPA does not confer valid authority. Any SPA presented as the basis for a seller’s authority must be scrutinized carefully — date of execution, notarization, scope, and if signed abroad, proper authentication.

Co-owners on the title are absent and unaccounted for. If the title shows multiple registered owners but only one is present and the others are not represented by valid SPAs or in person, the transaction cannot validly proceed without their consent.

The seller cannot provide a current RPT clearance. A seller who cannot produce an RPT clearance may have years of unpaid real property tax. The absence of this document should stop any payment beyond a refundable reservation while the RPT status is independently verified at the LGU.

The Tax Declaration is in a name other than the current registered owner. This indicates an incomplete prior title transfer — a legal gap that has not been resolved and must be addressed before the current transaction proceeds.

For developer purchases: no valid DHSUD License to Sell. A developer who cannot show a valid, current License to Sell from DHSUD is operating outside regulatory requirements. This is a serious red flag for any pre-selling transaction.

Pressure to sign quickly without time to review documents.Legitimate sellers and developers do not pressure buyers to sign without adequate time for review and due diligence. Urgency created by the seller — “another buyer is ready,” “this price expires today” — is a classic pressure tactic. A transaction that is genuinely available today will still be available after proper review.

Request to pay in cash with no official receipts. All significant property payments must be documented with official receipts. A seller who insists on cash payments without receipts, or who asks for payments to be made to a personal account with no documentation, is creating conditions where the buyer has no evidence of payment and no legal standing if the transaction fails.

The price is significantly below market value without a clear explanation. A property priced far below comparable properties in the same building or area is not necessarily a bargain — it may indicate a problem the seller knows about and has not disclosed. Always investigate unusual pricing before treating it as an opportunity.

Seller is evasive about providing documents for independent verification. A seller who provides copies of documents but refuses to allow independent verification at the Registry of Deeds, LGU, or other agencies is preventing the buyer from conducting legitimate due diligence. This is a fundamental red flag regardless of how reasonable the explanation may sound.