Before you can sell your HDB flat on the resale market, there is one small but mandatory step that catches many first-time sellers by surprise: registering an HDB intent to sell. You cannot grant an Option to Purchase (OTP) to a buyer until this registration has been in place for a set waiting period. Getting the timing right can save you an awkward delay when you have found a buyer.
This guide focuses on that first step: what the Intent to Sell is, how to register it, the seven-day wait, what HDB checks, and what to do next. It is general information. HDB updates its procedures and portals from time to time, so always confirm the current steps on the HDB website or the HDB Flat Portal.
What the Intent to Sell Does
Registering an Intent to Sell tells the Housing & Development Board (HDB) that you plan to sell your flat. It is done online through HDB’s resale e-services, now accessed via the HDB Flat Portal, using Singpass.
It serves three purposes:
- It starts the clock. Under current rules you must wait at least 7 days after registering before you can grant an OTP to a buyer.
- It triggers an eligibility check. HDB reviews your situation and gives feedback on whether you are eligible to sell, for example whether you have met the Minimum Occupation Period (MOP) and whether there are any outstanding issues on the flat or your loan.
- It unlocks the next steps. Once the registration is in place, you can access the OTP form for your flat through the portal, which you will need when a buyer is ready.
The registration is typically valid for a fixed period, currently 12 months. If you do not sell within that time, you will need to register again. Check the validity period shown on the portal when you register.
Who Should Register and When
Generally, the flat owners register, and any co-owners will be involved in the process. If you are using a property agent, the agent can guide you, but the registration itself is tied to the owners’ Singpass accounts, so expect to log in yourself.
The best time to register is before you start serious marketing, not after you have found a buyer. Because of the 7-day wait, many sellers register as soon as they decide to sell, even if they are still decluttering or getting a valuation. Registering does not commit you to selling, and you can let it lapse if you change your mind.
A few situations to think about before registering:
- You have not met MOP yet. In most cases you cannot sell until the MOP is over. Read selling your HDB flat before MOP if you are in an exceptional situation, and contact HDB before acting.
- Your sale price may not cover your debts. If the likely price is below your outstanding loan plus the CPF you need to refund, read about a negative sale first. You may need to top up the shortfall in cash.
- You need to buy your next home. If you are also buying, plan the sequence of both transactions, including your financing, so you do not end up without a home or paying two mortgages.
The Selling Timeline Around the Intent to Sell
The table below shows where the Intent to Sell sits in the typical resale flow. Exact steps, forms and timings are set by HDB and may change.
| Stage | What happens | What you should do |
|---|---|---|
| Register Intent to Sell | You log in to HDB’s portal with Singpass and register; HDB checks eligibility | Read HDB’s feedback carefully and fix any issues it flags |
| 7-day waiting period | You may market the flat and hold viewings, but cannot grant an OTP yet | Get a valuation idea from recent transacted prices, prepare the flat |
| Grant the OTP | After the wait, you grant the HDB OTP to a buyer and receive an option fee | Use the official OTP form from the portal; note the exercise deadline |
| Buyer exercises the OTP | Buyer pays the exercise fee and the option becomes binding | Both parties prepare for the resale application |
| Resale application | Seller and buyer submit their parts of the resale application to HDB | Submit your documents within the deadlines HDB sets |
| Approval and completion | HDB processes the application and you attend completion | Hand over the flat in the agreed condition |
The full selling journey is covered in HDB’s own guides. The point here is that nothing after the first row can begin without the Intent to Sell in place.
How to Register, Step by Step
The interface may change over time, but the general process looks like this:
- Go to the HDB Flat Portal and log in with Singpass.
- Find the resale section for sellers and choose to register an Intent to Sell.
- Confirm your flat details and the owners listed.
- Answer the questions asked, which may include whether you plan to buy another flat and how you plan to sell.
- Submit and note the date. Count at least 7 days from the registration before you can grant an OTP. Check the earliest date the portal allows rather than counting on your own.
- Review HDB’s eligibility feedback. If anything is flagged, such as an outstanding issue with your loan, arrears, or your MOP not yet being met, deal with it before committing to any buyer.
What to Do During the 7-Day Wait
The waiting week is useful time. Make the most of it:
- Check recent resale prices for similar flats in your block and estate using HDB’s resale price information. This helps you set a realistic asking price.
- Work out your sale proceeds. Log in to your CPF account to see how much CPF, plus accrued interest, will need to be refunded to your CPF account. Check your outstanding HDB or bank loan balance. Subtract both from your likely price to see your cash proceeds.
- Decide whether to use an agent. You can sell on your own or with a property agent. If you use one, agree terms in writing and check the agent’s registration with the Council for Estate Agencies (CEA).
- Prepare the flat. Fix obvious defects, check that any renovations comply with HDB rules, and declutter for viewings.
- Plan your next move. If you are buying another flat or a private property, check your financing and any timing constraints, and whether you need an extension of stay arrangement with your buyer.
- Gather documents. Have your identity details, loan information and any relevant paperwork ready so you can submit the resale application promptly.
Common Questions About the Intent to Sell
Can I advertise the flat before the 7 days are up?
Generally yes, you can market and show the flat. What you cannot do is grant an OTP until the waiting period is over.
Does registering commit me to selling?
No. It is a notice of intention. If you change your mind, you can simply not proceed and let the registration lapse.
What if I find a buyer on day three?
You will need to wait until the earliest date allowed before granting the OTP. Explain the timing to the buyer early so nobody is caught off guard.
Is the Intent to Sell the same as the buyer’s Intent to Buy?
No. Buyers have their own registration and eligibility steps, including getting an HDB Flat Eligibility (HFE) letter if they need an HDB loan or grants. Both sides must complete their own steps.
For the definitive rules, forms and current timelines, check the HDB website and the HDB Flat Portal before you act. When in doubt, contact HDB directly with your specific case.
Official sources: HDB
Further reading: DBSS Flats Explained: Design, Build and Sell Scheme Homes · Selling a Parent’s Home Under an LPA or Deputyship · Selling Your Home During a Mortgage Lock-In: Penalties and Clawbacks