What an HDB flat renovation really costs in 2026 and how to check contractor quotes
Breaking down renovation prices for three-room, four-room and five-room HDB flats, from light refresh works to full hacking and rewiring. Compare package rates from interior firms and independent contractors, see how carpentry, flooring and wet-area works drive the final bill, and learn which permits and HDB rules apply before work starts this year.
Across Singapore, two households can renovate similar HDB flats and still receive very different quotations. The reason is usually not just contractor margin. It is the mix of demolition, wet works, electrical upgrades, material allowances, site protection, haulage, and whether the quote is detailed enough to show what is actually included. In 2026, understanding the structure of a quote matters as much as the total sum, because a cheaper package can become more expensive once variation orders start appearing.
Electrical rewiring permit requirements
Electrical work is one of the fastest ways for a renovation budget to rise, especially in older flats where the existing system may not suit newer appliances. When reviewing electrical rewiring permit requirements, look beyond the number of power points. A proper quote should state whether it covers full rewiring or only additions, whether concealed wiring is included, whether the distribution board is being upgraded, and whether higher-load items such as air-conditioners, ovens, induction hobs, or storage heaters need dedicated circuits. If approval, testing, or licensed electrical involvement is required for the stated scope, that should be clearly written into the quotation instead of left as a verbal promise.
Flooring and tiling labour rates
Flooring and tiling labour rates often vary because contractors price not just by area, but by complexity. A simple overlay job is different from hacking old tiles, removing skirting, screeding an uneven base, carrying materials up, cutting around corners, or laying larger-format tiles. In practical 2026 terms, vinyl flooring supply and installation for an HDB flat commonly falls around S$5 to S$12 per square foot, while tiled flooring can run about S$8 to S$18 per square foot installed, with labour-only components often rising when tile size, pattern, or site condition is more demanding. A useful quote separates supply, labour, hacking, and disposal so you can compare like for like.
Wet area waterproofing standards
Bathrooms, service yards, and other splash-prone zones deserve close attention because waterproofing failures are expensive to fix after handover. When checking wet area waterproofing standards, the quotation should mention surface preparation, membrane or system type, the extent of treated areas, and whether water ponding or flood testing is included where applicable. It is also worth checking if the contractor is waterproofing only the shower zone or the full wet area, because that decision changes both price and long-term risk. Vague wording such as waterproofing as needed makes cost comparison difficult and should be clarified before any deposit is paid.
How to read the total quote
A realistic 2026 budget for an HDB flat depends heavily on scope. Cosmetic refreshes with paint, light carpentry, and limited replacement works may start around S$20,000 to S$35,000. More typical mid-range projects that include flooring, kitchen carpentry, electrical works, and one or two bathroom upgrades often land around S$35,000 to S$65,000. Extensive gut renovations with hacking, custom built-ins, redesigned layouts, and premium finishes can exceed S$70,000. These figures are broad estimates only, and the final amount can change with flat size, age, condition, design choices, and contractor methodology.
When a contractor says its material allowance is standard, it helps to compare key line items against recognisable market references. The examples below are not full-project package prices. They are benchmark ranges that can help you spot quotes that look unusually low because the material grade, quantity, or installation scope has been understated.
| Product/Service | Provider | Cost Estimation |
|---|---|---|
| Vinyl flooring supply and install | Evorich | About S$6-S$12 per sq ft |
| Porcelain tiles, supply only | Hafary | About S$3-S$8 per sq ft before labour |
| Waterproofing system materials | Mapei | Roughly S$1-S$3 per sq ft in material cost, before full installation pricing |
| Interior repainting package | Nippon Paint | About S$1,200-S$3,000 for a typical HDB repainting scope |
| Quartz countertop supply | Caesarstone | About S$95-S$160 per foot run |
| Modular kitchen cabinet reference | IKEA Singapore | About S$2,000-S$6,000+ before countertop and site installation |
Prices, rates, or cost estimates mentioned in this article are based on the latest available information but may change over time. Independent research is advised before making financial decisions.
The strongest way to check a contractor quote is to compare structure, not just headline price. Ask whether the total includes demolition, debris removal, floor and lift protection, HDB permit-related submissions where relevant, plumbing fittings, silicone finishing, touch-up paint, cleaning, and GST. Confirm material specifications in writing, including tile size, laminate grade, countertop brand, sanitary model allowance, and the number of electrical points. A quote with clear measurements, inclusions, exclusions, and unit rates usually tells you more about value than a shorter quote with a lower lump sum.
In the end, HDB renovation costs in 2026 are shaped by detail. Rewiring scope, flooring complexity, waterproofing quality, and transparent documentation all influence what you really pay. A reliable quote is not the one with the smallest number at the bottom, but the one that makes its assumptions visible enough for an informed comparison.
