Renovation loan: how it works and what it really costs

You have got the keys, or you are about to, and the quotes are landing between S$40,000 and S$80,000. Your savings do not cover that and still leave a buffer, so the bank's renovation loan starts to look like the answer. Before you sign, it helps to know what that loan really costs over five years, and how much of your quote it should actually be covering.

We build as a main contractor, so we see both sides: the renovation bill on our end, and the loan homeowners take to pay it. This is a plain breakdown of how a renovation loan in Singapore works, what it costs, and how to size it against a real quote rather than a round number.

What a renovation loan in Singapore actually is

A renovation loan is an unsecured personal loan ringfenced for home improvement. Unsecured means there is no collateral: the bank is lending against your income, not your flat, so approval depends on your salary and credit record. Because it is meant for renovation, banks usually release the money to your contractor or interior designer, not into your own account, and they may ask for the quotation or invoice first.

Two numbers matter. The first is the flat interest rate, which is what banks advertise. In early 2026 these sit roughly between 2.68% and 4.5% per annum, with the sharpest promotional rates (below 3%) tied to conditions like crediting your salary to that bank or applying online. The second, and the one that tells the truth, is the effective interest rate (EIR). A flat rate charges interest on the full original amount for the whole tenure, even as you pay the balance down. The EIR reflects the real cost on your shrinking balance, and it typically runs 5% to 8% per annum. So a flat rate near 3% is really costing you closer to 5% or 6%. Always compare EIR to EIR, never flat to flat.

MAS rules cap most unsecured renovation loans for HDB flats at S$30,000 or six times your monthly income, whichever is lower. Tenures usually run one to five years. HDB-focused loan packages commonly sit in the S$15,000 to S$30,000 band, which is the first sign of the gap we will come back to: the loan cap is often smaller than the renovation itself.

What the interest works out to

On a S$20,000 loan over five years, total interest across the main banks lands somewhere around S$2,680 to S$3,750, depending on the rate and your profile. That is the number to hold in your head: borrowing S$20,000 costs you roughly three thousand dollars in interest, spread over sixty monthly instalments. Borrow S$30,000 and the interest scales up proportionally. It is not free money, but it is far cheaper than a credit card or a generic personal loan, which is why it exists as a separate product.

What the renovation itself really costs

The loan is only half the equation. Here is what full-home renovations commonly run in 2026, by property type. These are broad market ranges, not quotes. Your figure moves with condition of the flat, how much you keep versus tear out, and the finish level you choose.

Property type	Typical range	Rough average
HDB 3 to 4 room	S$25,000 to S$65,000	≈ S$42,000
HDB 5 room / Executive	S$35,000 to S$100,000	≈ S$58,000
Condominium	S$40,000 to S$150,000	≈ S$78,000
Landed	S$80,000 to S$300,000+	≈ S$160,000

The single biggest split is BTO versus resale. A BTO (Build-To-Order, a brand new HDB flat) starts as a blank, finished shell, so you skip demolition. A resale flat usually needs hacking (removing existing walls, tiles or fixtures) and rectification of old work before anything new goes in. That gap alone adds roughly S$10,000 to S$20,000, plus more wet works. As a rough guide for 2026: a 4-room BTO commonly runs S$51,000 to S$61,800, while the same flat as a resale runs S$64,300 to S$80,300.

Where the money actually goes

Homeowners are often surprised that the finishes they can see are not the biggest line. The drivers, in order:

• Carpentry. Built-in wardrobes, kitchen cabinets, feature walls. This is frequently the largest single category, sometimes close to half the budget. In a 4-room package it can run S$12,000 to S$25,000 on its own.
• Wet works and hacking. Bathroom tiling, waterproofing and knocking out walls or floors. Waterproofing is invisible when done and expensive when skipped, so this is not a place to trim.
• Finish level. Moving from basic to high-end roughly doubles a budget. A 4-room flat done to a basic spec might be S$35,000 to S$45,000; the same layout in high-end finishes can reach S$90,000. Same walls, very different materials.
• Property type and size. More rooms, more bathrooms, more square metres. Condo and landed work costs more per unit of area as well, partly from access rules and building requirements.

The trade-off worth naming: you can borrow more to reach a higher finish, but interest is charged on all of it. Spending an extra S$15,000 on premium carpentry adds not just S$15,000 but the interest on it over five years. That is a fair choice to make, as long as you make it with eyes open.

How much should you actually borrow

Because the loan caps out at S$30,000 for HDB and the average 4 to 5-room renovation sits well above that, most homeowners do not borrow the whole cost. They borrow a slice and pay the rest from savings. That is usually the sensible order:

1. Get a firm, itemised quote first. Not a ballpark. A quote broken down by trade so you know what you are financing. A round number like "about S$50k" is not something to size a loan against.
2. Keep a cash buffer. Renovations run over on resale flats especially, because you cannot see behind old walls until you open them. Leave money for the surprises rather than borrowing to the maximum on day one.
3. Borrow the gap, not the total. If your quote is S$55,000 and you have S$30,000 saved, you might borrow S$25,000 and keep S$5,000 back. Borrowing the full S$55,000 when you do not need to just adds interest.
4. Check the six-times-income cap early. If your monthly income is S$4,000, six times is S$24,000, below the S$30,000 ceiling. Know your real limit before you plan around it.

The fine print that changes the cost

The advertised rate is not the whole bill. Watch for these:

• Processing or handling fees. Usually a small percentage of the loan, charged upfront or added to the principal. Ask whether the quoted EIR already includes it.
• Promotional conditions. The lowest rates often require salary crediting, an online application, or a minimum loan size. Miss a condition and you fall to the standard rate, which can be a full percentage point higher on a flat basis.
• Early repayment charges. Some lenders charge a fee if you clear the loan ahead of schedule. If you expect a bonus or plan to repay early, this matters more than the headline rate.
• Late payment penalties. Missing an instalment adds a fee and can affect your credit record, which follows you to the next loan or mortgage.

None of these are hidden traps, but they are easy to skim past when you are comparing rates. Read the letter of offer line by line, and if a fee is not clear, ask the bank to state it as a dollar figure over your actual tenure.

Can I use a renovation loan for a resale HDB flat that needs hacking?

Yes. Hacking, wet works and rectification are all normal renovation costs and can be financed. Just remember the loan is still capped at S$30,000 or six times your monthly income for HDB, and resale work adds roughly S$10,000 to S$20,000 over a comparable BTO, so the loan will usually cover only part of the total.

Is the flat rate or the effective rate the one I should compare?

The effective interest rate (EIR). The flat rate is advertised because it looks lower, but it charges interest on the full original amount for the whole tenure. The EIR reflects the real cost on your falling balance, typically 5% to 8% per annum in 2026. Compare EIR to EIR across banks so you are comparing like for like.

How much interest will I really pay?

As a guide, a S$20,000 loan over five years costs roughly S$2,680 to S$3,750 in total interest, depending on the lender and your profile. Scale that up for a larger loan. Fees and whether you qualify for a promotional rate will move the final figure, so ask for the total repayment amount in dollars before you sign.

If you tell us your flat type, its condition and roughly what you want done, we can talk through a realistic cost and how much of it a loan should sensibly cover.