Back in the 90s, HDB flats in then-remote estates like Woodlands and Yishun faced an oversupply. This was before the introduction of BTO flats. The general inaccessibility of these estates did not help the sales of the HDB flats.
To clear the stock, HDB combined adjacent 3-room and 4-room units into massive single homes. These became known as jumbo flats. Later, HDB jumbo flats were launched in mature estates, including central areas like Ang Mo Kio, Bishan, and Hougang, as well as more remote estates like Bedok, Jurong East, Pasir Ris, and Tampines.
Jumbo flats can easily stretch over 2,000 square feet. Without hacking down walls to create larger rooms, that’s at least six to seven rooms, with spacious common areas and even a balcony or small courtyard. However, once converted, jumbo flats cannot be subdivided back into smaller units.
No longer unsold inventory, these flats are considered coveted properties in Singapore today. With only an estimated 2,900 units left in the entire country (roughly 0.29% of all HDB stock), they are a rare breed that HDB has no plans to build again.
But with prices now frequently crossing the million-dollar mark, is it still a smart buy? Here are five reasons why a jumbo flat might be the best decision for your family.
5 Benefits of Getting an HDB Jumbo Flat
1. Great Space-Price Ratio
Homes in Singapore are shrinking in size while rising in cost. If you have an extended family, space will be a huge concern. While there are 5-room and executive HDB flat options, these barely have enough space for multi-generational families.
- Massive Floor Area: Ranging from 1,500 to over 1,800 sq ft (approx. 140–170 sqm), a jumbo flat offers 15%–30% more space than even the largest modern 5-room or Executive Condos.
- The Price Reality: While jumbo flat prices have risen — now typically transacting between $900,000 and $1.2 million, depending on location and renovation — they are still a steal compared to the value of private property.
- Private Comparison: A private condo of similar size (1,500+ sq ft) in the Outside Central Region (OCR) often starts at $2 million. You can get jumbo flats for nearly half the price.
Because these are HDB units, eligible buyers can utilise HDB loans (LTV up to 80%) and CPF grants, making the down payment far more manageable than a private property purchase.
2. A Size That Fits All
Unless you live in a landed house, it is unlikely that you can comfortably fit everyone in a multi-generational family in a regular-sized HDB unit. You can avoid unnecessary friction from conflicting lifestyle habits with a jumbo flat. By splitting the purchase costs among more family members, a jumbo unit may prove to be even more financially manageable.
- Privacy for Everyone: With up to seven potential bedrooms, you can easily partition the house to create separate private wings for different generations.
- Avoid Friction: The sheer square footage allows you to avoid the lifestyle friction common in multi-gen families. Parents can have a quiet sanctuary while the kids have a dedicated play zone.
- Cost Sharing: By pooling resources with family members to buy one jumbo flat, the financial burden per person is significantly lower than buying two separate, smaller flats.
3. Scarcity and Resilient Returns
Jumbo flats are a limited-edition asset class.
- Supply Crunch: HDB has halted the construction of jumbo flats. With supply capped at ~2,900 units, they are less susceptible to supply gluts compared to mass-market BTOs, although low transaction volumes make their prices volatile.
- Value Retention: Most properties depreciate as they cross the 30-year mark, but jumbo flats have proven to be a market anomaly. Data suggest that scarcity, combined with the rising necessity for multi-generational homes, has overridden typical depreciation trends. While they are currently enjoying strong pricing power and are projected to perform well in the near future, buyers should remain pragmatic. The reality of a shortening lease is inevitable, and premiums will naturally soften.
- Market Anomaly: In 2025, we saw jumbo flats in non-mature estates like Woodlands entering the million-dollar club due to sheer demand for space.
4. Dual-Key Concept for a Good Rental Opportunity
Want to subsidise your mortgage while living in the unit? Jumbo flats offer a unique layout advantage.
- The Layout Hack: Because Jumbo flats were originally two separate units, many retain two main doors. You can renovate the flat to create a ‘dual-key’ style concept, partitioning a section (such as a bedroom with an attached bathroom) for a tenant.
- Income Potential: This allows you to rent out a ‘studio’ suite for rental income while keeping your own family’s living area completely private.
Always ensure your renovation complies with HDB guidelines. You cannot legally subdivide the unit into two self-contained apartments (e.g., you cannot build a second full kitchen or install sub-metres), but a privacy-focused layout for room rental is perfectly allowed.
5. Room for Creativity
In space-scarce Singapore, standard BTOs can limit your interior design dreams. Jumbo flats are a blank canvas for your ideal designs.
- Open Concept Dreams: The structural walls are often limited to the perimeter, allowing you to hack internal walls to create massive open-concept entertainment halls.
- Lifestyle Zones: Owners have used the extra space for dedicated home gyms, walk-in wardrobes the size of a bedroom, indoor gardens, or even a home cinema.
- The Landed Feel: With features like large balconies and corridor spaces, you can achieve the aesthetic of a landed home or loft without the landed price tag.
Ready to Find Your (Jumbo) Home?
Increase your chances of getting a HDB jumbo flat with our Super Agents — CEA-certified and among the Top 1% in Singapore. With more than 8,000 happy customers served, we’ve garnered 4-star ratings on both Facebook and Google!
You can contact us via WhatsApp to share your preferences. Our algorithm will filter all our available listings based on those, and we’ll WhatsApp them to you once we find a match from our current list of property sellers looking for buyers.
We’ll also send you relevant content that you can use for your research and inform your home-buying decision, so you no longer have to spend hours searching online for the information that you need. Because at Ohmyhome, we’re always by your side, always on your side.
Frequently Asked Questions
Who is eligible to apply for the HDB Conversion Scheme in Singapore for jumbo flats?
To qualify for the HDB Conversion Scheme, you must form a valid family nucleus. This includes spouses and children, parents and siblings, or children under legal custody (if widowed or divorced). Additionally, at least one buyer must be a Singapore Citizen aged 21 or older.
What types of HDB flats can be combined to create a jumbo flat?
Under current HDB regulations, you can only combine two flats if both units are 3-room flats or smaller. You generally cannot combine larger units (like two 4-room flats) or a mix of large and small units under this specific scheme.
Can I buy two adjacent resale HDB flats simultaneously if I don’t own a home?
Yes. If you do not currently own an HDB flat, you can apply to purchase two adjacent 3-room (or smaller) flats in a single application. You must meet the standard eligibility criteria for buying a resale flat.
Do I need to pay off my existing loan before converting my HDB flat?
Yes. If you already own an HDB flat and wish to buy the neighbouring unit to combine them, you must fully discharge (pay off) your existing housing loan before you can take up a new loan for the second unit.
Can singles or joint singles apply for the HDB Conversion Scheme?
No, the scheme is strictly for families.
Featured Image Source: Home & Decor
+65 9755 9283 
hello@ohmyhome.com 
