A 5-room HDB flat gives you around 110 square metres to work with, which is enough space to make choices that suit your taste: a study or a guest room, an open kitchen or a closed one, a long dining table or a bigger living room.
That’s also why 5-room renovations go wrong. More space means more carpentry, and it’s easy to fill every wall because you can. But good interior design isn’t about filling every space; it’s about mindfully deciding which ones to leave empty.
Below are five 5-room HDB interior design ideas taken from homes we’ve designed, each with a close look at what’s in the photos and why it works. After that, we cover how BTO and resale 5-room flats differ, point-block layouts, and what to budget.
5-Room HDB Interior Design Ideas in Singapore
1. Sleek Nordic @ Edgedale Plains: Pastels With a Clear Plan
The living room at Edgedale Plains shows how much a painted shape can do. Behind the TV, a soft blush arch is painted straight onto the wall, with a low white console underneath and a mint-green wall running into the next room. There’s no TV feature carpentry at all, which is one of the simplest ways to free up budget for the rooms that need it.
In the kitchen, white cabinets sit against the same mint wall, and an island with a fluted timber base and white top doubles as a breakfast counter. The pink dining chairs pick up the colour of the arch.
In the bathroom, we used a round black-framed mirror and a wall-hung vanity with timber drawers to keep the floor clear, which makes a standard HDB bathroom feel larger. The whole project took six to seven weeks.
The trick here is to pick two or three pastels and repeat them across rooms rather than giving each room its own colour. In a 5-room flat, that repetition is what makes the home feel like one place.
2. Pastel Hush @ Hougang: A Two-Storey Layout Done Gently
Pastel Hush in Hougang is spread over two floors, so we faced a real challenge here: making the two levels feel connected.
Downstairs, we went for a combination of powder blue with open timber shelves above it in the kitchen. We paired it with a solid timber dining table that sits right in front.
The terracotta-peach arch behind the TV accentuates the warmth of the wood in the living room.
The staircase is kept deliberately plain: white walls, a slim black railing and nothing built in around it, so daylight from the upper floor reaches the living area.
Upstairs, the study has a vertical timber slat wall and a desk built under the window. In the other bedroom, we chose pink-and-white doors with a lace-style pattern cut into them for the wardrobe.
In a multi-level flat, carry one colour and one material between floors. Here it’s the warm timber, which shows up in the kitchen, the dining table and the study wall. And the hint of pink, blue, and terracotta, which you can see in different spaces in the home.
3. Modern British Colonial @ Clementi: Dark Floors, Light Walls
The Clementi home is a perfect example of an HDB 5-room flat interior design that uses a dark timber floor, which is unusual in an HDB flat and gives the place a slightly traditional look. We kept the walls white, the sofa soft grey, and used track lighting that runs along the ceiling. This lets the shelves and art have the limelight in the room.
The bedroom has a full-height wardrobe in flat white panels that blends into the wall.
The bathrooms are where colour comes in: a sage-green wall-hung vanity, an oval mirror and a black-framed glass shower screen in one, and green tiles in the shower of the other.
There is one thing that you need to understand tho: the dark floors work well here because in the interior design of a 5-room flat, there’s enough window and wall area to balance it. In a smaller flat, the same choice can close the room in.
4. Cozy Scandi @ Anchorvale: Curves Everywhere
Cozy Scandi at Anchorvale Crescent is built around curves. The living room ceiling has a curved cove with hidden lighting, the TV wall has rounded edges, and the armchairs are low, rounded and upholstered in a textured bouclé. A large curved modular sofa in cream wraps the corner of the room.
The curve carries into the dining area through arched open niches built into a greige carpentry wall, and the dining chairs are bentwood with cane backs around a round white table. Arched pendant shades sit above. Nothing in the room has a sharp corner, which is practical in a busy home as well as pretty.
Choose one shape and repeat it at different scales. Curves at the ceiling, carpentry and furniture level feel considered. A single arched doorway on its own often looks like an afterthought.
5. White Minimalist @ Bukit Batok: Storage That Disappears
At Bukit Batok, almost everything is white, cream or pale grey: large-format light grey floor tiles, a low white TV console and a cream sofa, with an arched opening and sheer curtains softening the light. It looks bare. It isn’t. The storage is simply all behind flat, handleless doors.
The entrance corridor has full-height built-in cabinets for shoes and bags, and a long white bench runs under the window for sitting and extra storage.
In the bedroom, a wall of white wardrobes reads as part of the wall, and a study corner uses floating shelves instead of another tall cabinet.
In a 5-room HDB flat, the entrance and corridor are often wasted. Building storage there frees up the living room to stay empty.
HDB BTO 5-Room Interior Design vs a 5-Room Resale Flat: What’s the Difference?
A new BTO and a 30-year-old resale flat need very different budgets, even though they’re both 5-room. With a BTO, the shell is new. HDB places a three-year restriction on removing the original wall and floor finishes in newly built flats, per its renovation guidelines, so most of a BTO budget goes into carpentry, lighting and loose furniture.
A resale 5-room flat usually needs work before any design starts. Older flats often have tired wiring, worn waterproofing and kitchens laid out as a long galley with a service yard behind. Our 5-room resale kitchen guide puts whole-flat rewiring at around S$4,000 to S$8,000. Whereas full interior demolition of a 5-room flat costs around S$4,500 to S$7,500
In either case, HDB requires prior written approval to hack or demolish walls, and structural walls can’t be removed.
How Much Does 5-Room HDB Interior Design Cost?
It depends far more on the condition of the flat and the amount of carpentry than on style. These are the published ranges we use for resale-specific works:
| Item (5-room resale) | Typical range |
| Full interior demolition | S$4,000 to S$7,000 |
| Whole-flat rewiring | S$4,000 to S$8,000 |
| Floor tile hacking | S$3 to S$5 per sq ft |
| Non-load-bearing wall hacking | S$6 to S$10 per sq ft |
| Debris disposal | S$300 to S$800 per sq ft |
| Mid-range resale kitchen rebuild | S$25,000 to S$45,000 |
Resale kitchens alone tend to cost 15 to 25% more than an equivalent BTO kitchen, mainly because of stripping, levelling and old pipework.
Choosing 5-Room HDB Interior Design Services in Singapore
For a flat this size, ask any designer to show you completed 5-room homes, not renders, and ask how they’d handle your bomb shelter, your corridor and your service yard. Those three spots separate a designer who’s planned a lot of 5-room flats from one who hasn’t. You can see how we work on our HDB interior design page, and book an appointment if you’d like us to look at your floor plan.
Space Factor excels in creating unique design ideas and themes to completely transform a space and change its appearance for the better. We provide services for HDB designs, condominium designs and interior design for landed properties in Singapore. Start building your dream house with us today! Ready to transform your 5-room flat? Contact us today for a personalised design consultation.
Frequently Asked Questions
How big is a 5-room HDB flat?
Most 5-room HDB flats are around 110 square metres, with larger and corner units around 110 to 113 square metres. Older flats can be bigger than newer ones of the same type.
What is the best interior design style for a 5-room HDB flat?
There isn’t one best style. The five homes discussed above range from pastel Nordic to dark-floored colonial. What matters more is repeating a small set of colours and materials across every room, so a large flat feels like one home.
How long does a 5-room HDB renovation take?
A typical HDB renovation takes about 8 to 12 weeks, depending on complexity. A BTO with mostly carpentry can be faster; a resale flat that needs hacking, rewiring and a new kitchen usually takes longer.
Can I hack walls in my 5-room HDB flat?
Only non-structural walls, and only with HDB’s prior written approval. Your contractor should check this against your floor plan before you commit to an open-plan design.
