Paper 2 · HDB Policies
HDB Minimum Occupation Period (MOP) Explained
The Minimum Occupation Period (MOP) gates when an HDB owner can sell, rent out the whole flat, or buy private property. It is one of the most-tested HDB rules — and the trap is *how* the period is counted.
How it's counted
- MOP is generally 5 years of actual occupation, counted from key collection.
- Periods you do not physically occupy the flat (left vacant, whole-flat sublet, overseas) do not count and can push the MOP date back.
- Prime Location (PLH) and some plus/prime flats carry a longer 10-year MOP — a newer rule worth knowing.
What you can and can't do
| Action | During MOP | After MOP |
|---|---|---|
| Sell on the open market | ❌ No | ✅ Yes |
| Rent out the whole flat | ❌ No | ✅ Yes (with approval) |
| Rent out spare rooms | ✅ Yes (registered, you still live there) | ✅ Yes |
| Buy private residential property | ❌ Not allowed | ✅ Yes |
Worked example
A couple collect keys in Jan 2020 but post the family overseas and leave the flat vacant for two years. Their MOP doesn't simply end in Jan 2025 — the non-occupied period doesn't count, pushing the date later. Separately, a Prime Location (PLH) flat bought today would carry a 10-year MOP, not 5.
Common mistakes
- Counting MOP from the purchase/booking date instead of key collection + occupation.
- Assuming vacancy or whole-flat subletting still counts toward MOP.
- Renting out the whole flat during MOP (only rooms are allowed).
- Forgetting PLH flats are on a 10-year MOP.
The trap
Counting MOP as plain calendar time since purchase — it's 5 years of genuine occupation, so vacancy/whole-flat subletting can extend it. And renting a room is allowed within MOP; renting the whole flat is not. Watch for PLH flats on a 10-year MOP.
What the MOP restricts
- During the MOP you generally cannot sell the flat on the open market, rent out the whole flat, or buy private residential property (local or overseas).
- You can rent out spare rooms while you continue to live in the flat.
Length & special cases
- The MOP is usually 5 years of actual occupation from key collection — periods the flat is not occupied do not count towards it.
- Prime Location Public Housing (PLH) and certain Plus/Prime flats carry a longer 10-year MOP with tighter resale conditions.
Exam takeaway
MOP = genuine occupation, not elapsed time. Whole-flat rental & open-market sale wait until after MOP; room rental is fine during. Check whether it's a PLH flat (10 years).
Apply it · the IRAC method
Mr Tan bought a BTO flat and collected his keys 3 years ago. He wants to sell it on the open market now because he has been posted overseas for work, and separately asks whether he can rent out the whole flat in the meantime.
- IIssue: Can Mr Tan sell his flat on the resale market or sublet the whole flat only 3 years after key collection?
- RRule: HDB flats are subject to a Minimum Occupation Period (MOP), typically 5 years for most flats, computed from the date of key collection and excluding any period the flat is not occupied by the owners. Owners must physically occupy the flat throughout the MOP and generally cannot sell the flat on the open market or sublet the whole flat before the MOP is fulfilled (subletting of rooms may be allowed with HDB approval). Confirm the current MOP duration and exact conditions with HDB.
- AApplication: Mr Tan is only 3 years into a 5-year MOP, so he has not fulfilled the MOP. He therefore cannot sell his flat on the open resale market yet, and he cannot sublet the whole flat. Being posted overseas does not automatically waive the MOP; he would need to check with HDB on any exceptional treatment.
- CConclusion: Advise Mr Tan that he must complete the MOP before selling or subletting the whole flat. He should confirm his exact MOP completion date and any available options (e.g. subletting rooms) directly with HDB.
Worked case study · Section B style
A couple collected keys to their new BTO flat 3 years ago. They now want to sell on the open market and rent out the whole flat in the meantime. • 3 years since key collection • 5-year MOP applies
- (i) The MOP (generally 5 years from key collection) has not been met
- (ii) They cannot sell on the open market before the MOP is met
- (iii) They cannot rent out the whole flat before the MOP (renting a room is allowed, with rules)
- (iv) They may sell or rent out the whole flat now, since they have occupied it
- A.(i), (ii) and (iii) only
- B.(i) and (iv) only
- C.(iii) only
- D.All of the above
Show answer & explanation
Answer: A. (i)–(iii) are correct: 3 < 5 years, so no open-market sale or whole-flat rental yet (room rental is allowed). (iv) is the trap.
Ready to test yourself?
Practise exam-style questions on HDB Policies — with instant answers and explanations.
Practise HDB Policies questions →Common questions
- How long is the HDB MOP?
- For most flats the MOP is 5 years of actual occupation from key collection. Certain schemes can differ, so the specific flat's conditions should always be checked.
- Can I rent out my HDB flat during the MOP?
- You cannot rent out the whole flat during MOP, but you may rent out spare bedrooms (subject to HDB's rules) while you continue living there.
Keep learning
Explore more
Get each day's lesson free — one RES topic + the trap, every day on Telegram.
Join @resprepsg →Study material aligned to the public CEA syllabus. Not financial or legal advice — verify current figures with the relevant authority (IRAS, HDB, CEA, MAS).