How to Choose a Renovation Contractor in Singapore: Red Flags and the Right Questions

You meet three contractors. One quotes 38k, one quotes 52k, one quotes 61k for the same four-room flat. Same scope, roughly. So which one do you sign with? Most people pick the middle and hope for the best. That is not a strategy.

Knowing how to choose a renovation contractor in Singapore is less about chasing the cheapest quote and more about reading what a quote is hiding. At Reno Bros we have walked into too many flats where the previous contractor vanished after the deposit, or the bathroom started leaking into the unit below within a year. The patterns repeat. Here is how to spot them before you sign.

Can they even legally touch your flat?

For HDB homes this is not optional. Any contractor doing renovation works in an HDB flat must be listed in the Directory of Renovation Contractors (DRC). It is HDB’s licensing list, and the bar to get on it is not nothing: at least three years in the trade, a registered company, and delisting if they rack up 24 demerit points within 24 months. Listing runs for two years for standard contractors, three years for CaseTrust-accredited firms, so it is a live status, not a one-time badge.

Check it yourself. The DRC is searchable on HDB’s website by company name. If a contractor cannot give you the exact registered name that appears on that list, that is your answer. An unlicensed contractor cannot legally pull your HDB renovation permit, which means your hacking and noisy works happen without approval, and you are the one HDB writes to.

The accreditation that actually protects your money: CaseTrust-RCMA

DRC listing is the floor. CaseTrust (often joint-accredited with the RCMA, the renovation contractors’ association) is the layer above it, and it is the one that guards your cash.

What it buys you in practice:

• A deposit performance bond, so if the firm winds up mid-project, your deposit is backed rather than gone.
• A cap on the upfront deposit at 20% of the contract sum, not the 50% some outfits ask for.
• The CaseTrust Standard Renovation Contract, with an itemised scope and a milestone payment schedule.
• A workmanship warranty of 12 months from completion, in writing.

One honest caveat, because pretending otherwise would do you a disservice. The bond covers 100% of your deposit, but only the deposit. On an 80k job with a 20% deposit, that protects the full 16k you put down up front; the other 64k you pay progressively still relies on the firm actually finishing. Accreditation lowers your risk. It does not delete it, and the contract terms still matter.

Where quotes lie to you

A quote tells you more about a contractor than the showroom does. The biggest red flag in this whole exercise is the vague lump sum. “Carpentry — $18,000.” For what? How many feet run? Top hung, bottom hung, or full height? What laminate grade, EDL or the house basic? Which carcass, moisture-resistant plywood or chipboard that swells the first time your service yard floods?

A real quote breaks this down: line items, measurements (feet run for carpentry, square feet for flooring and tiling), brand and grade for finishes, and clear exclusions. When a Lamitak laminate is specified by code rather than “designer laminate”, you know what you are getting and what an upgrade actually costs.

Two quotes 15k apart usually are not. One has 32mm sintered stone and the other a thin solid surface that scorches when you set down a hot wok. One includes a 24 to 48 hour ponding test on the bathroom waterproofing; the other quietly skips it and you find out two monsoons later. Compare like for like, or you are comparing nothing.

Watch how they want to be paid

How a contractor wants the money tells you how confident they are in finishing. A fair Singapore structure looks roughly like a 10 to 20% deposit, then staggered progress payments tied to real milestones (after hacking and wet works, after carpentry installation, and so on), with a final retention of around 5 to 10% held back until defects are cleared.

That retention is your leverage. It is the reason the snag list gets fixed. If a contractor wants most of the money before the carpentry is even fabricated, walk. Money paid is leverage lost.

Red flags, stated plainly

• Cash only, no proper invoice. No paper trail means no recourse and, often, no GST-registered entity behind the work.
• A quote dramatically below everyone else. Nobody buys 32mm sintered stone and sells it at solid-surface prices for fun. The gap returns later as “variation orders”.
• Pressure to pay a large deposit today to “lock the promo”. Real schedules do not expire by Friday.
• No fixed business address, only a mobile number. If something goes wrong, where do you send the letter?
• Vague on the HDB permit, or offering to skip it. A contractor who treats the permit as paperwork to dodge will treat your waterproofing the same way.
• No portfolio of similar full-home jobs. A firm that does mostly small touch-ups is not the one to gut and rebuild your whole flat.

Six questions to bring to the site meeting

The hesitation, or the confidence, in the answers tells you everything.

• What is your exact company name on the DRC, and are you CaseTrust accredited?
• Who is my single point of contact, and is the project managed by your own staff or subcontracted out?
• Can you show me the itemised contract and the payment milestones in writing?
• What is your warranty, and what specifically does it cover?
• How do you handle the waterproofing and the ponding test, and how long do you let it cure before tiling?
• Can I visit a project you handed over in the last year?

A contractor who answers these without flinching has done it properly, many times. One who gets cagey around the contract or the warranty is telling you how the project will go.

So who do you actually sign with?

The real test comes in week six, when something on site needs a decision and you need to reach someone who picks up. That is the contractor you want: one person accountable, not a number passed between subcontractors. Cheapest almost never wins, and the most expensive is not automatically the safest. Reno Bros runs full-home renovations, BTO through landed, on that project-management discipline, and our quotes are itemised because we would rather argue about a line item now than a leak later. Have a look at our past projects, see the full range of renovation services, and when you are ready to compare us properly, contact the team or message Reno Bros on WhatsApp.

FAQ

How do I check if a renovation contractor is licensed in Singapore?

For HDB work, search the firm by registered company name in HDB’s Directory of Renovation Contractors (DRC) on the HDB website. If the exact name they give you is not on that list, they cannot legally pull your renovation permit, and you should not engage them.

Is CaseTrust accreditation necessary to hire a contractor?

It is not legally required, but it is worth paying for. CaseTrust-RCMA adds a deposit performance bond, caps your upfront deposit at 20%, and gives you a standard itemised contract with a 12-month workmanship warranty. It lowers your financial risk meaningfully.

What deposit is normal for a renovation in Singapore?

A fair upfront deposit sits around 10 to 20% of the contract sum, with the balance paid in stages tied to real milestones. CaseTrust caps it at 20%. If a contractor asks for 40 to 50% before work starts, treat it as a red flag and walk.

Related Reads

• 5 Critical Steps to a Stress-Free Renovation
• The Hidden Costs of Renovation: How to Budget for Quality in 2026
• The Permit Guide for HDB Hacking, Wet Works and Renovation Approvals

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