Understanding HDB room sizes is crucial for over 80% of Singaporeans living in public housing. Whether you're planning a 3-room HDB-size renovation or designing a 5-room BTO-size layout, knowing the exact dimensions helps you make informed decisions.
This comprehensive guide provides validated room-by-room measurements for every HDB flat type, including detailed dimensions for HDB bathrooms, kitchen sizes, bedroom measurements, and living hall specifications. We'll cover everything from studio apartment sizes to executive flat dimensions with expert insights from leading renovation professionals.
HDB Room Size Classification: How It Works
The HDB naming system counts common areas as rooms. One thing to note is that the common area (living room + kitchen) is also considered a room in HDB's naming convention, meaning a 2-room will only have one bedroom, a 3-room will have two bedrooms, and so on.
Key Point: Both 4-room flat sizes and 5-room flat sizes contain only three bedrooms; the difference lies in the standard area dimensions.
Since October 2024, the HDB has introduced three flat classifications: Standard, Plus, and Prime, which significantly affect pricing and location attributes.
Complete HDB Flat Size Breakdown: Official Measurements
Studio Apartment Size & 2-Room Flexi Dimensions
Studio Apartments:
- Total size: 35-47 square meters
- Target: Elderly citizens (55+)
- Features: Flexible lease options, elder-friendly design
2-Room Flexi Flat Size:
- Type 1: About 36 square metres (388 sq ft)
- Type 2: About 45 square metres (484 sq ft)
- Layout: 1 bedroom, one bathroom, one kitchen, one storeroom-cum-apartment-shelter
3 Room HDB Size: Detailed Room Dimensions
Total Floor Area: 60 to 65 square meters (646-700 square feet)
Room Breakdown:
- Bedrooms: 2 (master + 1 common)
- Living area: Combined living/dining space
- Kitchen: Compact design with storage
- Bathroom: 1 main bathroom
- Storage: Household shelter/storeroom
3 Room HDB Bathroom Size: 3-4 square meters, with combined toilet and shower areas
Expert Renovation Insight: HDB 3-room BTO renovations typically cost between S$25,000Â and S$45,000, depending on scope and finishes, with professional packages starting from S$5,590 for essential upgrades.
4 Room Flat Size: Singapore's Most Popular Choice
Official Dimensions:
- New BTO flats: 90 square meters (969 square feet)
- Older resale flats: 82 square meters (883 square feet)
- Range variation: 90 to 110 square meters
4 Room HDB Layout Breakdown:
- Bedrooms: 3 (1 master with ensuite + 2 common)
- Bathrooms: 2 total
- Living room size: Starting at 14 sqm
- Kitchen: Adjacent to the dining area
- Service yard: Additional utility space
4 Room HDB Bathroom Dimensions: 4-5 square meters, often includes both master and shared bathroom
Professional Analysis: HDB 4-room flats typically span 90-100 square meters, offering ample space for creative renovations. Renovation experts note that newer BTO 4-room flats usually provide 90-93 square meters, whereas resale units vary from 74 to 120 square meters.
5 Room BTO Size & Layout Specifications
Total Floor Area: 110 to 130 square meters (1,184-1,399 square feet)
5 Room HDB Bathroom Size: 5-6 square meters with more design flexibility
Key Differentiator: The main advantage isn't additional bedrooms but expanded living and dining areas. The living and dining areas are significantly larger than those of the 4-room units.
5 Room Layout Features:
- Bedrooms: 3 (same as 4-room)
- Living area: Significantly larger than a 4-room
- Dining area: Separate, spacious dining space
- Optional features: Balcony or expanded service yard
HDB Room-by-Room Size Analysis: Expert Measurements
HDB Bathroom Sizes: Complete Specifications
Standard HDB Toilet Dimensions:
- HDB toilet bowl size typically follows a standard dimension of around 48cm in width, while the height is 43cm
- HDB toilet bowl S-trap distance from the wall typically follows the standard measurement of 150mm
Bathroom Renovation Coverage:
Professional renovation packages typically cover up to 250sqft per toilet for overlay work, with premium packages including complete hacking and reinstallation.
Bathroom Size by Flat Type:
- 3-room bathrooms: 3-4 square meters (combined facilities)
- 4-room bathrooms: 4-5 square meters (master + shared)
- 5-room bathrooms: 5-6 square meters (enhanced layouts)
HDB Kitchen Size & Layout Standards
Kitchen Design Principles:
HDB kitchens prioritize compact designs suited to HDB spaces, focusing on functionality over size. Standard features include:
- Counter space: Optimized for daily cooking needs
- Storage: Floor-to-ceiling cabinet potential
- Service yard connection: In 4-room and 5-room layouts
- Appliance integration: Built-in solutions maximize space
Kitchen Renovation Specifications:
- Cabinet installation: 10 ft bottom cabinet + 10 ft top cabinet (standard 5-room)
- Countertop: Quartz top tier 1 single profile - 10 ft
- Floor coverage: 800 sqft for living/dining and bedrooms
Discover how to optimize your HDB kitchen space with innovative cabinet solutions.
HDB Living Hall Dimensions
Living Room Size Standards:
- 4-room flats: Living room starting at 14 sqm
- Layout flexibility: Open-concept designs can expand perceived space
- Height: Standard ceiling height of 2.6m for BTO flats
Space Optimization: Transform your space with an open-concept design that seamlessly merges kitchen, dining, and living areas to create a visually spacious environment.
HDB Bedroom Dimensions by Flat Type
Standard Bedroom Sizes:
- 3-room bedrooms: Compact but functional for rest
- 4-room bedrooms: The bedrooms in a HDB 44-roomflat are often small in size compared to landed properties, but still comfortable enough for a good night's rest
- Master bedrooms: Larger than common bedrooms with ensuite bathrooms
- Common bedrooms: usually located near each other, making it easier for families to monitor younger children
HDB Renovation Cost Guide: Professional Insights
Renovation Packages by Room Size
3-Room BTO Packages:
- Kitchen + 2 Toilets: S$18,390 for kitchen + 2 toilets package
- Basic renovation: RCS packages start from S$5,590 for kitchen cabinets
- Complete renovation: S$25,000 to S$45,000 for complete renovation
4-Room Renovation Costs:
- Average spending: Singapore homeowners spend between $43,000 $66,000 on average for a 4-room HDB renovation
- Budget allocation: Kitchen Renovation: S$8,000 - S$15,000 (35-40% of total budget)
- Bathroom renovation: S$6,000 - S$12,000 (25-30% of total budget)
5-Room Premium Packages:
- Complete bare unit: Premium 5-room BTO complete renovation S$20,690
- Professional features: Premium tiles, full carpentry, 12-month warranty
Professional Renovation Timeline
Project Duration:
- 3-room renovation: 8-12 weeks including permits (1-2 weeks), construction (6-8 weeks), and final handover (1 week)
- Complete house renovation: 6 to 10 weeks for whole house projects
- Overlay packages: 2 to 4 weeks for simpler overlay packages or partial renovations
Expert Tips: Maximizing HDB Room Sizes
Space Optimization Strategies
Vertical Storage Solutions:
Vertical space remains the most underused resource in Singapore kitchens. Furthermore, tall cabinets create visual height while providing extra storage for items that are seldom used.
Smart Design Choices:
- Light colors: Create an illusion of larger spaces
- Open concepts: Remove non-structural walls between living and dining areas
- Multi-functional furniture: Maximize utility in a limited space
Professional Design Consultation
Expert Services Include:
- Site Measurement: Precise assessment of your flat's dimensions
- Design Proposal: Customized plans with 3D visualization
- Quote Finalization: Transparent, all-inclusive pricing
Why Professional Help Matters:
Professional installation ensures proper leveling, secure mounting, and correct alignment. Furthermore, professionals handle unexpected complications, such as uneven walls, which are common in older HDB flats.
Current Market Trends: HDB Size Preferences
Popular Room Size Choices
4-Room Popularity: Singaporean families prefer 4-room HDBs over 5-room units, and for good reason. It is essentially the right home size for small families and young couples who are still planning to start a family.
5-Room Advantages: The 5-room HDBs offer greater flexibility for various furniture layouts and interior styles you wish to achieve in your home.
Renovation Permit Requirements
HDB Regulations:
- Most HDB renovations require permits, including floor works, wall finishes, and wet area modifications
- Bathroom restrictions: HDB imposes a 3-year limitation on bathroom/toilet finishes for new BTO flats
- Professional handling: Our team submits all required documentation promptly and accurately. Meanwhile, we follow up directly with HDB officers to ensure a smooth approval process.
Frequently Asked Questions: HDB Room Sizes
Q: What's the difference between 4-room and 5-room HDB sizes?
A: Both have three bedrooms. The main difference is that the living and dining areas are significantly larger in 5-room units, providing more flexibility for furniture arrangements.
Q: How much space do I need for a bathroom renovation?
A: Professional packages typically cover up to 250sqft per toilet, with dimensions ranging from 3-6 square meters depending on flat type.
Q: Can I renovate in stages to manage costs?
A: Yes, renovating in phases is a practical approach to managing your renovation cost in the Singapore budget. Start with essential areas, such as kitchens and bathrooms.
Professional Renovation Services: Transform Your HDB
Comprehensive Renovation Solutions
Expert Team: RCS delivers premium renovations at competitive prices through efficient processes and wise material choices.
Service Quality: "RCS exceeded our expectations with their 'top-rated hdb resale renovation' service," Mrs. Tan shared enthusiastically.
Complete Packages Include:
- Professional design consultation, 3D rendering, all permits and approvals, material delivery, daily cleanup, progress updates, quality installation, and comprehensive warranty coverage
Why Choose Professional Renovation
Quality Assurance: RCS provides transparent pricing with no hidden fees. Moreover, they utilize high-quality materials and employ skilled artisans for every project.
Warranty Coverage: RCS offers comprehensive warranty coverage that includes all artistry, materials, and system functionality, with a prompt response to warranty claims.
Contact for Free Consultation: Transform your HDB with expert guidance - +65 8784 8742
Conclusion: Making Informed HDB Size Decisions
Understanding exact HDB room sizes empowers confident decisions in Singapore's competitive housing market. Whether planning a 3-room HDB size renovation or optimizing a 5-room BTO size layout, professional guidance ensures optimal results.
Key Takeaways:
- 3-room flats: 60-65 sqm, ideal for young couples
- 4-room flats: 90-110 sqm, Singapore's most popular choice
- 5-room flats: 110-130 sqm, enhanced common areas
Professional Recommendation: Get at least three detailed quotes. Then, compare not just prices but also materials, timeline, and warranty terms.
With accurate measurements and professional renovation support, any HDB flat size can become your perfect home, maximizing space, functionality, and value in Singapore's dynamic property market.
Explore comprehensive HDB renovation packages tailored to your flat size and budget requirements.