HDB Guide 2026: MOP, Upgrading & Resale Rules Explained

What This HDB Guide Covers

Singapore's public housing market is the foundation of the country's residential property ladder. Roughly four in five resident households live in HDB flats, and for the majority of owners the flat is their largest single asset.

This guide is written for three readers:

• HDB owners approaching their MOP who want to understand exactly when and how they can sell.
• Upgraders weighing an HDB-to-condo move and worried about sequencing and ABSD.
• Buyers assessing a resale flat as a long-term home or an entry point to the property market.

All figures are in Singapore Dollars.

The Minimum Occupation Period (MOP)

The MOP is the period you must physically occupy your flat before you may sell it on the open market or rent out the whole flat. It typically runs from the date of key collection.

Resale Eligibility & Grants

Who Can Buy an HDB Resale Flat

• Singapore Citizens and Permanent Residents forming a family nucleus, or single citizens aged 35 and above under the Single Singapore Citizen Scheme.
• PR households must meet citizenship proportions in the household.
• Non-citizens may generally not buy an HDB resale flat, though a non-citizen spouse may be included in a citizen's application under prevailing rules.

Grants and Their Trade-offs

CPF Housing Grants reduce the purchase price but attach a five-year MOP and, in some cases, a resale levy. Take the grant only after checking whether the attached conditions will block a planned upgrade inside that window.

If you sell a subsidised flat and later buy another subsidised flat, a resale levy applies. For upgraders moving to private property, the levy does not apply — but the MOP and any clawback conditions still do (see the Property Tax, ABSD & SSD guide).

Upgrading from HDB to a Condominium

The single most consequential decision an HDB upgrader makes is sequence: sell the flat first, or buy the condo first.

Sell-First

• You avoid ABSD entirely, because you own only one residential property at the point of purchase.
• You know your exact proceeds before committing to a loan quantum.
• The risk is a gap between giving up possession and receiving the new keys, which may require temporary accommodation.

Buy-First

• You secure the unit before selling, which suits a hot market or a specific stack you want.
• You will likely face ABSD on the second property, which for a Singapore Citizen's second residential property is a substantial percentage of the price.
• The ABSD may be refundable on a later sale within the prescribed window, subject to IRAS conditions — but the cash flow requirement is real in the meantime.

Worked Example in SGD

CPF, Loans and TDSR

Using CPF for the New Purchase

On sale of your flat, the CPF you used plus accrued interest is refunded to your CPF Ordinary Account. That refund is not lost — it can be redeployed as part of the downpayment on the next property, subject to valuation limits and the applicable Loan-to-Value ratio.

Loan-to-Value and TDSR

• Bank loans on a first housing loan typically allow up to 75 per cent LTV, requiring 25 per cent downpayment of which at least 5 per cent must be cash.
• LTV tightens on a second or subsequent housing loan.
• MAS requires lenders to compute the Total Debt Servicing Ratio at the higher of the actual interest rate or the medium-term floor rate. Budget on the floor.

See the full CPF Housing Guide for the detailed mechanics.

Common Mistakes

1. Assuming the MOP date is the sale date. It is the earliest date you may sell; the actual exercise timeline adds weeks to months.
2. Pricing off asking prices. Transacted comparables are the only defensible basis for a plan.
3. Buying before selling without ABSD cash. The most common cause of a stalled upgrade.
4. Ignoring the resale levy when returning to a subsidised flat.
5. Forgetting renovation contingency. Hold SGD 15,000–25,000 for works floor plans do not reveal.

Expert Advice

Singapore's public housing programme has spent six decades solving for volume. The current phase is solving for precision — which shows up in delivery predictability, layout versatility and running cost. If you are an HDB owner with an MOP between 2027 and 2029, the useful move this quarter is not to wait for prices to peak. It is to map your MOP date against upcoming OCR supply and to decide your sequence while you still have options.

See also the full article library for neighbourhood, MRT, school and investment deep dives.