An older resale flat renovation often costs more than a similar job in a newer flat, because pipes, toilets, wiring and windows may need work that a recent unit does not. The purchase price of the flat is only the starting point. This guide explains how to set a renovation budget using real resale figures, without inventing a package price.
The numbers below come from HDB resale transactions registered from November 2025 to November 2026, published on data.gov.sg and updated 10 November 2026. Use them to understand the market you are buying in, then build the renovation budget from the condition of the unit itself.
What the data shows
Of 25,928 resale transactions in that window, 11,988, or 46.2%, were flats aged 30 years or more. Flats aged 40 years or more made up 7,447 transactions, or 28.7%, and their median resale price was $475,000. That compares with a median of $663,000 for flats aged 30 to 39 years, and $733,000 for flats under 10 years old. The overall median in the window was $632,000.
| Flat age in 2026 | Transactions | Share | Median resale price |
|---|---|---|---|
| Under 10 years | 4,960 | 19.1% | $733,000 |
| 10 to 19 years | 3,907 | 15.1% | $688,000 |
| 20 to 29 years | 5,073 | 19.6% | $648,888 |
| 30 to 39 years | 4,541 | 17.5% | $663,000 |
| 40 years or more | 7,447 | 28.7% | $475,000 |
| 30 years or more | 11,988 | 46.2% | $538,944 |
| All transactions | 25,928 | 100% | $632,000 |
Source: HDB resale flat prices from January 2017, data.gov.sg, updated 10 November 2026. The window is November 2025 to November 2026 (25,928 registered transactions). The November 2026 month is a partial extract of 443 transactions. Flat age is calendar year 2026 minus the lease commencement year.
Price is not a budget
The $188,000 gap between the median 30-to-39-year flat and the median 40-year-or-older flat is a purchase-price difference, not a renovation budget. Some buyers have more room in their overall housing spend after paying less for an older unit. That does not mean the gap should be spent on the works, and it does not tell you what your toilets or wiring will cost.
Two flats of the same age can also need very different work. One may have had the toilets and electrical board replaced five years ago. The other may still have original pipes. Your older resale flat renovation budget has to come from a survey of the unit, not from the resale median alone.
What usually costs more
In an older resale flat renovation, the items that most often raise the cost are hidden, not decorative. Plan for these first:
- Toilets — Full hacking, waterproofing, tiling and new fittings cost more than a simple change of sanitary ware. If the toilets have never been redone, treat this as a core budget line. See our bathroom and toilet renovation service for the scope of a full wet-area job.
- Hacking — Removing old tiles, kitchen cabinets, walls or floor finishes takes time, disposal and protection of common corridors. Our hacking and demolition work is usually the first trade on site.
- Plumbing and electrical — Replacing concealed pipes and adding circuits is harder, and messier, once new walls and floors are in.
- Windows — Repair or replacement is easy to forget at quoting stage, then expensive to add later.
- Kitchen — Cabinets, worktops, plumbing and electrical points add up quickly in older layouts. Our notes on kitchen renovation cost in Singapore explain the factors that move a kitchen quote, without a single island-wide rate.
Older resale flat renovation budget
A useful older resale flat renovation budget is built in layers, not from a package headline:
- Must-do hidden works — Toilets, leaks, unsafe wiring, failed waterproofing and window safety. These protect the flat and should not be cut to fund a nicer wardrobe finish.
- Layout and wet-area changes — Hacking, shifting a kitchen sink, or enlarging a toilet within HDB rules.
- Finishes — Flooring, painting, new doors and windows that are aesthetic rather than urgent.
- Carpentry and fittings — Wardrobes, kitchen cabinets, lighting and appliances.
- Contingency — Set aside a share of the works budget for what only appears after hacking, such as rusted pipes or uneven screed. The right share depends on how much of the flat is still original.
We do not publish a dollar figure for any of these layers here, because product choices, the number of toilets and the condition of the slab change the total. What we can do is price your unit from photos and a site visit, line by line, so you can see each layer clearly.
Phasing the works
If the full older resale flat renovation is more than you want to spend at once, phase it in a way that does not waste money. Toilets, leaks, unsafe wiring and window safety should come first, because later finishes will sit on top of them. Kitchen and carpentry can follow in a second phase, as long as you already know the finished floor height and the electrical points those cabinets will need.
How long you plan to stay also shapes the budget. A flat you will live in for many years can justify a fuller first renovation. If you may move in a few years, put the money into the hidden works and a clean, durable finish, and be more cautious with expensive decorative carpentry that the next owner may not keep.
Pay on a schedule that matches completed stages, not a large upfront lump. A written scope, a payment schedule and a clear list of exclusions will do more for your budget than a headline package price.
Permits and contractors
Budget time as well as money. Some works need an HDB renovation permit before they start. Your contractor should file this for you; HDB’s page on applying for a renovation permit explains the process. You also need a contractor from HDB’s directory. See looking for renovation contractors on the HDB site before you award the job.
Permit waiting time, hacking, wet works and carpentry all sit on a sequence. An older resale flat renovation that tries to run painting or flooring too early usually pays for repair later.
Questions for every quote
When you compare quotes, ask each contractor the same questions:
- Which toilets will be fully hacked and re-waterproofed, and which will only be refreshed?
- Are plumbing and electrical replacement included, or priced as optional?
- Is hacking, disposal and corridor protection listed separately?
- Who applies for the HDB permit, and which works does it cover?
- What is excluded, such as windows, air-conditioners or appliances?
- How is variation work priced if hidden damage is found after hacking?
HDB’s important information on renovations is also worth reading before you sign, because you remain responsible for works done in your flat.
Get a renovation quote
Share the resale floor plan, photos of the toilets, kitchen, distribution board and windows, and a short list of what you want to change. We will separate must-do works from optional finishes so your older resale flat renovation budget stays clear.
See our HDB renovation services, then request a free quote or WhatsApp +65 9731 6300. We are open Monday to Friday, 9am to 6pm, and Saturday, 9am to 2pm.
