HDB Interior Design Singapore: A Room-by-Room Cost Guide
HDB interior design Singapore costs depend on flat type, scope, and the materials you choose. With resale flats making up most transactions in 2024, many homeowners now spend more on hacking and rewiring than BTO buyers do. This guide breaks down realistic market ranges by room so you can budget with confidence before you meet any contractor.
Living and dining areas
The living and dining zone is where most families gather, and it sets the tone for the whole flat. For a 4-room BTO of about 90 sqm, flooring and basic carpentry here often fall in the S$8,000 to S$12,000 range when you keep to vinyl or laminate. Resale flats usually cost more because old tile must be hacked and removed before new work starts.
Standard items in this zone include flooring, a feature wall, ceiling works, and lighting. If you want a false ceiling with concealed cove lights, add about S$1,500 to S$3,000. A full wall of built-in cabinets for the TV and display typically runs S$3,000 to S$5,000 depending on laminate grade and the length of the run.
- Vinyl or laminate flooring: S$3,500 to S$6,000 for a 4-room flat.
- Feature wall with laminate or microcement: S$1,200 to S$2,500.
- False ceiling and cove lighting: S$1,500 to S$3,000.
- Built-in TV console and display cabinets: S$3,000 to S$5,000.
Keep the layout open so the space reads larger than its footprint. A simple L-shaped sofa and a round dining table seat four to six without blocking walkways. Good HDB interior design balances cost with daily flow, so spend on the pieces you touch every day.
Kitchen and bathroom costs
Wet areas cost more per square metre because waterproofing and tiling are labour heavy. HDB already provides floor tiles in wet areas for BTO flats, but many owners retile for a fresh look or to correct floor slopes. Plan this early because wet works set the schedule for the rest of the renovation.
A standard HDB kitchen renovation with carpentry, countertop, backsplash, and plumbing runs about S$6,000 to S$10,000. Quartz or solid-surface countertops are the common HDB approved choice and cost S$60 to S$120 per foot run. Each bathroom typically costs S$4,000 to S$7,000 for tiling, new sanitary ware, and waterproofing.
- Choose your countertop material first, since it drives a large part of the quote.
- Decide between an open concept kitchen or a closed one, because partition work changes the price.
- List every appliance, sink, and tap so the plumber can quote accurately.
- Confirm the waterproofing scope with your HDB Licensed Renovation Contractor before signing.
Bedrooms and custom carpentry
Bedrooms are where HDB flat space saving ideas pay off most. A 4-room flat has three bedrooms, while a 5-room of about 110 sqm has four. Custom carpentry here is the biggest variable in your budget because every home stores different things.
Platform beds with storage, built-in wardrobes, and study nooks are popular because they use height and under-bed volume. A built-in wardrobe costs roughly S$1,800 to S$3,500 per room. A platform bed with hydraulic storage starts around S$2,000. These pieces are part of whole-house customization and are measured to your exact wall dimensions rather than bought off a shelf.
How HDB interior design Singapore budgets differ by flat type
Flat size drives the headline number. A 4-room BTO commonly costs S$30,000 to S$45,000 for a full renovation. A resale 4-room often reaches S$50,000 to S$70,000 because of extra hacking, rewiring, and tiling of older finishes. A 5-room resale flat pushes the figure higher still, often past S$70,000 when carpentry volume grows.
These are market ranges, not quotes. Your final cost depends on carpentry volume, material grades, and whether you keep HDB's provided fittings such as doors and bathroom tiles. Always ask for an itemised quote so you can see where each dollar goes and where you can trim without hurting the result.
Permits, contractors, and hidden costs
Every HDB renovation needs a renovation permit from HDB before works begin, with processing of about 2 weeks. Works must be carried out by an HDB Licensed Renovation Contractor listed in the Directory of Renovation Contractors. This protects you because the contractor is bound by HDB's rules on structural safety and permitted works.
Common extra costs that surprise first-timers include air-conditioning trunking, appliance delivery, and disposal of old furniture. Set aside about 10 percent of your budget as a buffer for these items so a small surprise does not derail the plan. A clear quote from the start keeps the buffer small rather than large.
When you plan room by room, you take control of the budget instead of guessing. A whole-house customization approach lets one team design your kitchen, bedrooms, and storage as a single system, so measurements line up and style stays consistent across every room. Talk to a designer who works only with HDB Licensed Renovation Contractors and ask for an itemised plan before you commit a dollar.
