I intend to take an HDB housing loan to finance my flat purchase, when should I apply for an HDB Loan Eligibility (HLE) letter?

You must obtain an HDB Loan Eligibility (HLE) letter before the sellers grant you an Option to Purchase. The HLE letter must be valid when the sellers grant you the Option to Purchase and when you submit the resale application to HDB.
If your HLE is expiring, do submit a fresh application together with the supporting documents for our review seven days before the expiry date. Otherwise, you may log in to My HDBPage using your Singpass to request for a cancellation of the current HLE letter. After the current HLE letter has been cancelled, you may then submit a fresh application together with the supporting documents for our review.