HDB Flat Types and Classifications

Understand the different HDB flat types and classification available to meet different household needs and budgets.

Last updated 3 June 2026

HDB flats are where most Singaporeans live. Understanding the different flat types and classification can help you assess your housing options from the start more clearly.

What flat types and classification mean for you

Flat types determine the kind of home that may suit your household size and needs, while flat classification indicates the conditions attached to the flat, such as the Minimum Occupation Period (MOP).

Together, they affect where you can apply for a flat, how long you need to live in it, and the housing options you may consider.

HDB Flat Types

HDB offers a range of flat types to suit different household sizes and life stages, from singles or couples starting out to families living across generations.

You can buy HDB flats either directly from HDB (e.g. Build-to-Order and Sales of Balance Flats exercise), or from the resale market.

Community Care Apartments (CCAs)

How to buy this flat type: From HDB only
Flat features: 1 bedroom, 1 bathroom, living/ dining/ kitchen

CCAs combine senior-friendly housing with care services, offering an option for seniors to age in-place and independently in a community setting.

2-Room Flats

Types of 2-room flats & how to buy them: 2-room (from resale market only), 2-room Flexi (from HDB or resale market), Short-lease 2-room Flexi (from HDB only)
Flat features: 1 bedroom, 1 bathroom, living/ dining, kitchen, household shelter

2-room flats are designed for singles, seniors or small households who prefer a more compact living space. They are suitable for those starting out or looking to right-size their home.

3-Room Flats

How to buy this flat type: From HDB or resale market
Flat features: 2 bedrooms (1 of which is a master bedroom with attached bathroom), common bathroom, living/ dining, kitchen/ utility, household shelter

3-room flats are commonly chosen by young couples or smaller families. They offer a balance between affordability and space, making them a popular first home.

4-Room Flats

How to buy this flat type: From HDB or resale market
Flat features: 3 bedrooms (1 of which is a master bedroom with attached bathroom), common bathroom, living/ dining, kitchen, service yard, household shelter

4-room flats are one of the most common flat types for families. They provide more flexibility as household needs grow, such as space for children or a home workspace.

5-Room Flats

How to buy this flat type: From HDB or resale market
Flat features: 3 bedrooms (1 of which is a master bedroom with attached bathroom), common bathroom, living/ dining, kitchen, service yard, household shelter, suggested study

5-room flats are suitable for larger families that want more living space. They offer greater flexibility in how the rooms can be used.

3-Generation (3Gen) Flats

How to buy this flat type: From HDB or resale market
Flat features: 4 bedrooms (2 of which have attached bathrooms), common bathroom, living/ dining, kitchen, service yard, household shelter

3Gen flats are designed for multi-generation families who wish to live together. They support the needs of extended family living under one roof while allowing for shared and private spaces.

Executive Flats

How to buy this flat type: From resale market only
Flat features: 1 master bedroom with attached bathroom, 2 additional bedrooms, common bathroom, living/ dining, kitchen

Executive flats may be suitable for families or households that require more space. They have a larger layout with additional space that can be used as a study or family area, and some include a balcony. HDB ceased building executive flats in 1995, and they are now only available on the resale market.

For older resale flats, some features (e.g. household shelter and master bedroom with attached bathroom) may not be available. As the layout and floor area may vary from flat to flat, you are encouraged to view the resale flats you are interested in.

For new flats sold by HDB, you can visit the MyNiceHome Gallery at HDB Hub to explore our showflats of the various flat types, or check out the virtual gallery.

💡Minimum occupation period (MOP) condition for HDB flats

Whether they are new or resale flats, all HDB flats are subject to a minimum occupation period (MOP). MOP is the period during which you must live in your HDB flat before you can sell it on the resale market.

How does MOP affect me?

During the MOP, you cannot:

Sell your HDB flat
Rent out your whole HDB flat
Acquire a private residential property
Apply for another BTO flat

You will still be able to rent out your spare bedrooms during the MOP, if you are able to meet the other eligibility criteria.

Non-occupation of your flat during the MOP is an infringement of HDB’s rules and regulations, and enforcement action will be taken against errant flat owners. This could range from a financial penalty to compulsory acquisition of the flat.

HDB also conducts inspection on all flats involved in a resale transaction. If there are signs that the flat has not been lived in, HDB will withhold the resale application and commence investigations.

How long is the MOP of my flat?

The MOP of your HDB flat is calculated from the date you collect the keys to your flat and excludes any period when you do not occupy the flat, such as when the whole flat is rented out or when there has been an infringement of the flat lease.

The length of the MOP depends on the purchase mode, flat type, and date of flat application. You can check whether you have met the MOP to sell your flat by using HDB's 'Check Flat Details' e-Service.

HDB Flat Classification

Choosing a flat type is only one part of the decision. Where the flat is located – and the conditions tied to it – also matters.

New HDB flats are offered under different classifications, based on their locational attributes:

Proximity to city centre
Transport connectivity
Availability of amenities, such as social and commercial services that are typically found in town centres

Standard flats

Standard flats form the largest category of BTO flats to be launched every year.

Plus flats

Plus flats are located in choicer locations with good connectivity, proximity to amenities, and the city centre. Some may come with unique features, such as waterfront living.

Prime flats

Prime flats are located in the choicest locations. They tend to be centrally located, typically within or near the central region and/or major town centres, and are therefore well-served by comprehensive amenities, and have excellent transport connectivity. Prime flats include Prime Location Public Housing (PLH) flats sold before the October 2024 sales exercise.

Differences between Standard, Plus, and Prime flats

As Plus and Prime flats would command higher market values given their attractive location and attributes, these flats will be priced with additional subsidies to keep them affordable. Plus and Prime flats will also come with tighter sale conditions.

For example, buyers of Plus and Prime flats will need to live in their flats for a longer minimum occupation period (MOP) of at least 10 years. If they choose to sell their flat after the MOP, Plus and Prime flat owners will have to pay a percentage of the resale price of the flat, reflective of the extra subsidies they received.

Standard, Plus, and Prime Housing Framework

	Standard Flats	Plus Flats	Prime Flats
Location	Largest category of BTO supply, may come with 1-2 good locational attributes like near to MRT stations or good amenities	Choicer locations (e.g. nearer to city centre, good connectivity, good amenities, and/ or with unique features like waterfront living)	Choicest locations (e.g. centrally located, excellent connectivity, and comprehensive amenities and/ or with unique features like waterfront living)
Subsidies	Significant market discounts	More subsidies, in addition to significant market discounts	Most subsidies, in addition to significant market discounts
Sale Conditions	Standard This includes: 5-year MOP Renting out of whole flat allowed after MOP No subsidy recovery upon resale of flat	Tighter This includes: 10-year MOP No rental of whole flat Subsidy recovery upon resale of flat (less than Prime)	Tightest This includes: 10-year MOP No rental of whole flat Subsidy recovery upon resale of flat

Are existing flats affected by the Standard, Plus, and Prime classification?

Existing flats and flats launched by HDB before the October 2024 sales launch will not be affected by the Standard, Plus, and Prime classification. Prevailing resale eligibility conditions will apply.

How do you know if the BTO project at an upcoming sales launch is Standard, Plus or Prime?

The classification of BTO projects on offer will be announced at each of HDB’s sales launches.

How flat types and classification work together

HDB flats may be classified or unclassified, depending on when the flat was built or launched, and the conditions that apply to it.

For example, flats launched from the October 2024 sales exercise onwards will be classified as Standard, Plus or Prime, and a new 4-room flat in a town centre may have a different classification from a new 4-room flat in a less central area.

Flats built and launched before the October 2024 sales exercise are not classified. So a 4-room resale flat that was built in the 1990s is unclassified.

If you’re just starting out, it may help to consider:

Household size and needs: identify suitable flat types
Location and conditions: understand whether a flat is classified and the conditions that apply
How long you plan to stay in the flat: to plan for your housing needs over time
Your budget: assess and narrow down what is within your means

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