A 4-room HDB reno in Singapore can cost anywhere from S$30,000 to well above S$100,000, and both figures are real, for units of similar size. The gap is not fraud or luck. It comes from choices: which trades you hire, which finishes you specify, and whether you treat furniture as part of the budget or as an afterthought once the dust settles. Understanding those choices is how you get a coherent, lasting home instead of a beautiful ceiling with nowhere comfortable to sit.
Quick answer: For most Singapore HDB homes, contractor renovation work (hacking, tiling, carpentry, electrical, painting) typically runs S$40,000-$80,000 for a 4-room flat, rising sharply with custom joinery and premium finishes. Furnishing (sofas, beds, dining sets, wardrobes) is a separate budget that most renovation calculators undercount. Plan both together from day one.
Why Home Reno Costs Vary So Dramatically
Square footage is a starting point, not a predictor. A 4-room flat is approximately 90 sqm; a 5-room is around 110 sqm. But two flats of identical size can produce renovation invoices that differ by S$50,000 or more, because scope differs more than area does.
The three biggest cost drivers are hacking and structural changes, custom built-in carpentry, and the tier of finishing materials. Hacking a wall to open up a living-dining space adds labour and debris-disposal costs that do not appear on a per-sqm rate. A full set of built-in wardrobes, TV feature wall, kitchen cabinets and study shelving can easily account for half a total renovation budget on its own. And the jump from mid-range to premium tiles, quartz countertops or solid-timber flooring can double the materials cost for a single zone.
Electrical and plumbing works are the least glamorous line items but among the most consequential. Older resale flats often need partial rewiring to handle modern appliance loads. Singapore's mains supply runs at 230V, 50Hz, and high-power built-in hobs or ovens typically need a dedicated higher-rated circuit, your licensed electrician will confirm what your unit requires. Skipping this creates problems that surface months later, not during the ID walkthrough.
The Two Budgets Most Homeowners Conflate
The single most common planning mistake is treating renovation and furnishing as one pool of money without ever separating them. What happens in practice: the contractor scope runs long, the TV feature wall ends up more elaborate than planned, and the remaining budget for a bed, sofa, dining table and wardrobe is whatever is left, which is rarely enough to do the spaces justice.
A renovation budget covers work done to the unit: hacking, tiling, painting, electrical, plumbing, built-in carpentry. A furnishing budget covers moveable pieces: sofas, beds, mattresses, dining sets, wardrobes (if freestanding), lighting and soft furnishings. These are bought from different vendors on different timelines, and the second budget is almost always larger than new homeowners expect.
The practical fix is to decide on a furnishing allocation before you finalise contractor scope. If you know you want a quality queen-sized bed frame and mattress, a 3-seater sofa, a dining set for six and a wardrobe, price those categories first. That number then sits alongside your contractor quote, not beneath it.
What Each Zone Typically Costs to Renovate
Rather than a single per-sqm headline figure, it helps to think zone by zone.
Kitchen
The kitchen consistently commands the largest share of renovation spend. New cabinets, countertops, backsplash tiling, a sink and appliance cutouts add up quickly. A standard built-in hob cutout runs around 60 cm or 75-90 cm wide depending on configuration; if you are upgrading to a 4-zone induction hob, budget for a dedicated circuit. Even a mid-range kitchen with laminate-finish cabinets and quartz countertops is a substantial investment; premium finishes push the figure considerably higher.
Bathrooms
Full toilet hacking and retiling is labour-intensive relative to the area involved. Most Singapore bathrooms are small, so the per-sqm cost is high. If you have two bathrooms, doing both in the same reno pass is more efficient than separating the works.
Living and Dining Areas
Flooring and feature walls drive costs here. Engineered timber or premium tiles for an open living-dining zone covering 30-40 sqm adds up. Many homeowners also add recessed lighting, a feature wall for the TV, and some built-in storage. These are also the zones where furnishing quality matters most to daily experience: a sofa you sit on for three hours every evening, a dining table where the family gathers, these pieces earn their budget.
Bedrooms
Master bedroom carpentry (wardrobe, dressing area, bedhead) is often the second-largest built-in spend. Standard wardrobe depth runs around 58-60 cm; a full-width built-in across a bedroom wall adds real cost but also real utility. Secondary bedrooms are frequently where budgets get trimmed, which is a reasonable trade-off. A freestanding wardrobe and a good bed frame can furnish a bedroom well without built-in cost.
Where to Spend More and Where to Scale Back
Spend more on anything that is difficult or expensive to change later: tiles (the hacking cost of replacing them is significant), electrical infrastructure, plumbing rough-ins, and flooring substrate. These are the bones of the renovation.
You can scale back on decorative elements that are easy to update: paint colour, soft furnishings, artwork, accessories. These age quickly anyway and are cheap to refresh in a few years.
Built-in carpentry is the most debated category. Custom built-ins are expensive and they are permanent, if your taste changes or you move, they stay. Freestanding furniture travels with you, can be reconfigured, and in many cases offers better value per piece. The honest answer is that a bedroom wardrobe is a strong candidate for built-in (it uses height efficiently and fits the space precisely), while a TV console or dining storage can often be freestanding without any loss of function.
Singapore's humidity, typically 70-85% year-round and higher after rain, makes material choices more consequential than in temperate climates. Solid wood is durable and refinishable but does move with humidity; engineered wood and plywood are more dimensionally stable and a smart choice for cabinet carcasses. Particleboard is the budget option but is vulnerable to moisture at edges, which matters in kitchens and bathrooms especially.
Furniture as the Multiplier (Not an Afterthought)
A well-renovated shell with poorly chosen furniture looks unfinished. A modestly renovated flat with considered, proportionate furniture looks like a home. This is not a polite consolation, it is what actually happens in practice, repeatedly, in Singapore homes.
Proportion matters more than price. A 3-seater sofa that runs 190-230 cm wide needs roughly 90-100 cm of clear space behind the dining chairs to circulate comfortably; a 4-room living-dining layout can handle this, but it needs to be planned, not discovered after delivery. A queen-sized bed (152 x 190 cm) with a frame adding around 10-15 cm in each direction needs at least 60 cm of clearance on the sides and about 70 cm at the foot, figure that into your bedroom zone before committing to wardrobes and door swings.
The other thing worth naming: furniture is where your home's personality actually lives. Tiles and paint create a backdrop; the sofa, the dining table, the bed and the lighting fixtures are what people see, touch and sit on. Getting these right is not a second-tier concern after the reno is done. The full home furniture range is worth browsing early in the planning process, before the contractor scope is locked, so you have a realistic sense of what the furnishing budget needs to cover.
For the living room specifically, the sofa and the coffee table set the tone for everything else. A fabric sofa in a performance weave is forgiving in Singapore's humidity and easy to maintain; top-grain leather ages well and wipes clean but is warmer to sit on. Explore living room furniture with sizing in mind: measure your clearances first, then filter by footprint.
The bedroom is where material quality pays the longest dividend. A good mattress and a solid bed frame will outlast two paint cycles. Bedroom furniture (from bed frames to storage) is worth allocating properly in the budget rather than treating as whatever is left over.
And a dining table for six (typically around 150-180 cm long) plus chairs is not a trivial purchase: buy a size that fits your actual dining zone with 90 cm clearance all around for people to pull chairs back and circulate. The dining furniture range covers formats from compact 4-seater to extendable family tables.
Frequently Asked Questions
Is it better to renovate first and then buy furniture, or plan both at the same time?
Plan both at the same time, even if you buy furniture after the reno is done. Furniture dimensions affect where you place power points, lighting positions, and how much built-in storage you actually need. Making furniture decisions after the renovation forces you to retrofit around what you already built, which often means expensive workarounds or compromises you live with for years.
How much should I budget for furniture on top of the reno cost?
There is no universal figure, but as a working rule, furnishing a 4-room HDB with quality pieces across the living room, master bedroom, and dining zone is a meaningful expense that deserves its own allocation from the start. Skipping this and using whatever remains from the contractor budget usually means either under-furnishing or buying pieces you will want to replace sooner than expected.
Does doing a resale flat versus a BTO change the cost structure?
Yes, significantly. A resale flat often needs more hacking and infrastructure work (older wiring, existing tiles to remove, more surfaces to refinish). A BTO starts clean, so more of your budget can go to finishes and furniture rather than undoing what was there before. That said, resale flats are often in more central locations and may have more generous layouts, which changes the equation for some buyers.
When is built-in carpentry worth the premium over freestanding furniture?
Built-ins make the most sense where height utilisation matters (floor-to-ceiling wardrobes), where the space has an awkward shape that freestanding pieces cannot fill, or where you are certain you will not be moving. Freestanding furniture wins on flexibility, portability, and often on cost per functional unit. For most families, the honest answer is: built-in for wardrobes and kitchen, freestanding for everything else.
What is the biggest reno mistake Singaporean homeowners regret?
Over-specifying hidden infrastructure and underestimating furnishing costs is the most common regret pattern. Rewiring and hacking are necessary, but they are invisible once done, they do not make the home feel better day to day. Spending that final S$5,000-10,000 on a quality sofa, dining set or mattress instead of an extra feature wall often produces a more noticeable improvement to how the home actually lives.
Plan the Numbers, Then Build the Home
Home reno costs in Singapore are genuinely variable, but they are not mysterious. The biggest variable is not your flat size, it is how much custom built-in work you commit to, which materials you specify, and whether you plan your furnishing budget alongside your contractor scope or leave it as an afterthought. Separate those two budgets early. Allocate both properly. And treat the furniture not as decoration applied after the real work is done, but as part of the real work.
Megafurniture's two showrooms (the flagship at 134 Joo Seng Road and the Tampines outlet at 21 Tampines North Drive 2) are set up to let you see pieces at scale, test proportions and plan your room before you commit. Rated 4.81 from over 4,700 Google reviews, with complimentary delivery and professional assembly on qualifying orders, it is a practical place to get the furnishing side of your budget sorted. Browse the full home furniture range and start building your furnishing budget alongside your reno plan.
Because a growing proportion of the furniture range is built in Megafurniture's own factories in Batu Pahat and Foshan, quality is set at the production stage rather than left to an outside supplier's standards. That single line of responsibility, from factory through to delivery and assembly in your home, is part of what makes the furnishing side of a Singapore reno more predictable than it used to be.