HDB Interior Design Singapore: A Room-by-Room Cost Guide

HDB interior design Singapore costs shift from room to room, and HDB's newer BTO flats now come with induction-ready kitchens plus pre-laid wet-area tiles. Most owners still commit to a full renovation after key collection. Knowing per-room numbers helps you avoid surprise overruns.

What shapes your HDB interior design Singapore budget

Flat size sets the baseline. A 4-room flat measures about 90 square metres, a 5-room about 110 square metres, and a 3-room about 60 to 65 square metres. Bigger floor area means more flooring, more paint, and more carpentry. The reno permit from HDB also matters because structural rules limit what you can touch.

You cannot hack structural walls, beams, columns, or slabs. The bomb shelter stays as is, with only light fittings and laminated flooring allowed inside, and the door remains. Those limits keep part of your budget fixed no matter how creative you get. Smart HDB interior design pairs low vinyl floors with tall carpentry so the fixed rules still leave room to save.

Kitchen and the HDB open concept kitchen option

The kitchen is where budgets move most. A standard HDB kitchen renovation runs roughly S$8,000 to S$15,000 for cabinets, a quartz or solid-surface countertop, and plumbing works. The HDB open concept kitchen is allowed, and new BTO units arrive induction-ready, which avoids gas piping work under SCDF and SP rules.

If you want a full open layout, a lightweight non-ceramic partition can replace a non-structural divider. Remember that window grilles on upper-floor windows stay for child safety, so plan the view before you open walls.

Bedrooms and HDB approved flooring

Bedrooms reward storage carpentry. A platform bed with storage, a built-in wardrobe, and a study nook are common in 4-room and 5-room flats. Flooring for bedrooms uses HDB approved flooring such as vinyl or laminate, which costs less than tile and installs fast. Expect S$3,000 to S$6,000 per bedroom for flooring plus basic carpentry.

HDB approved flooring also covers the living area. Vinyl and laminate handle daily wear well and suit the HDB flat space saving goal because they sit low and need no thick screed. Plain HDB interior design still needs the same material discipline, so do not skip the grade check on the quote.

Bathrooms, painting, and the HDB renovation permit

Bathrooms cost about S$4,000 to S$8,000 each when you replace tiles, a water heater, and fittings. BTO flats already include wet-area tiles, so light touch-ups keep this lower. Painting the whole flat runs roughly S$2,000 to S$4,000.

Before any works start, your contractor files the HDB renovation permit. Processing takes about two weeks. Only HDB Licensed Renovation Contractors in the Directory of Renovation Contractors may submit it, so confirm your builder is on the list early.

Step-by-step way to price each room

1. List every room and its current condition from your flat handover.
2. Mark structural limits from your floor plan, including the bomb shelter and beams.
3. Get itemised quotes per room from at least two LRC-registered contractors.
4. Add a 10 percent buffer for hidden works like rewiring or water stains.
5. Lock the permit timeline with your contractor before signing.

Whole-house customization lets you treat the flat as one system instead of separate rooms. A single design plan aligns flooring, carpentry, and lighting so the money you spend builds a home that fits how you actually live.