How to Read a Renovation Quotation in Singapore (2026)

A renovation quotation is only comparable when every line states a quantity, a specification and a unit price — item, material, brand or grade, and how many. Two quotes for the same flat can differ by $20,000 and both be honest, because they're pricing different work. Reading them properly is an hour's job, and it's the hour that decides whether your renovation finishes on budget.

Here's what each section should contain, where money hides, and how to put three quotations side by side without comparing apples to renovation packages.

What should a proper renovation quotation include?

Scope by trade, quantities, material specifications, a payment schedule, a timeline, and warranty terms — on paper, before any deposit changes hands. A quotation that fits on one page for a full flat isn't a quotation, it's a price.

• Trade-by-trade breakdown — hacking, masonry, plumbing, electrical, carpentry, painting, glass, flooring, each with its own subtotal
• Quantities — feet run of carpentry, number of electrical points, square feet of flooring, not “kitchen cabinets” as a lump
• Specifications — board type, laminate brand, hinge and runner brand, tile size, paint finish
• Exclusions — what the price does not cover, written down
• Payment schedule — stages tied to completed work, not calendar dates
• Timeline and warranty — site duration and the workmanship warranty period

Every quotation we issue is itemised this way, which occasionally makes ours look longer and more expensive than a competitor's until you count what the shorter one left out.

Why do two quotations for the same flat differ by $20,000?

Almost always because of scope gaps, material grade, and carpentry volume — in that order. Price per unit varies far less between reputable firms than the amount of work each one assumed you wanted.

The usual suspects: one quote includes hacking debris disposal and the other doesn't. One assumes eight feet run of kitchen carpentry, the other twelve. One specifies a 3-in-1 waterproofing system with a flood test, the other says “waterproofing”. One counts thirty electrical points, the other counts the fourteen already in the flat. Line them up trade by trade and the mystery gap usually resolves into four or five identifiable differences.

What do “provisional sum” and “subject to site condition” actually mean?

They mean the price isn't fixed yet, and the risk sits with you. A provisional sum is a placeholder for work whose extent isn't known — reasonable for genuinely unknowable things like rectifying concealed pipe corrosion in a 40-year-old flat, and unreasonable when used for hacking, disposal or electrical points that anyone could have counted on a site visit.

Ask two questions about every provisional item: what would make this go up, and what's the ceiling? A firm that has done a hundred resale flats can tell you the realistic range. If the answer is a shrug, price that shrug into your contingency — and keep 10–15% of your budget aside regardless.

Which line items hide the most money?

Carpentry, electrical points, hacking and disposal, and waterproofing. These four account for most of the gap between the number you sign and the number you eventually pay.

Carpentry deserves the most attention because it's routinely a third of an HDB budget. Our kitchen cost breakdown shows how quickly the same cabinet run changes price with board and hardware grade.

How do you compare three renovation quotes fairly?

Build one spreadsheet with a row per trade, then force every quotation into the same rows. Gaps appear immediately — a blank cell is a scope difference, not a saving.

1. List the trades down the left column: hacking, masonry, plumbing, electrical, carpentry, flooring, painting, glass, cleaning, permits.
2. Enter each firm's subtotal per trade. Where a firm bundles, ask them to unbundle before you continue.
3. Add rows for quantities that drive cost: feet run of carpentry, electrical points, square feet of flooring.
4. Note exclusions in a final row. This is where the cheapest quote usually reveals itself.
5. Only then compare totals — and adjust the cheap one upward for whatever it left out.

Give every firm the same brief before they quote, or you'll spend the comparison stage undoing your own inconsistency. If you want a sanity check on the totals first, the renovation cost calculator gives a range for your flat type and scope.

What are the red flags in a renovation quotation?

Vague lump sums, a deposit above 20%, no company registration details, and pressure to sign at the showroom. Renovation contractors sat among the top five industries for complaints logged with the Consumers Association of Singapore in 2025 — and prepayment is where consumers lose money.

• “Electrical works — $3,500” with no point count. You cannot verify or compare it.
• A deposit above 20%. CaseTrust-accredited firms cap the initial deposit at 20% and protect it with a performance bond.
• Discounts that expire today. A price that only exists for the next hour is a sales tactic, not a quotation.
• No HDB registration number for flat works. Check the firm in HDB's Directory of Renovation Contractors.
• Verbal promises. If the free feature wall isn't in the document, it isn't happening.

Is a quotation the same as a contract?

No. The quotation prices the work; the contract governs what happens when something goes wrong. You want both, and the contract should name the payment stages, the site duration, the variation-order process, the defects liability period, and how disputes get handled.

This is also where accreditation earns its keep — accredited firms work off a standard renovation contract rather than one they wrote themselves. Whether you end up with an interior designer or a direct contractor, insist on the written agreement before the deposit.

Should you take a renovation package instead?

Packages are quotations with the quantities pre-decided for you — useful as a price anchor, risky as a contract. A S$19,999 four-room package sounds like a fixed price until you compare its inclusions against your flat.

Read the package the same way you'd read any quote. How many feet run of carpentry? How many electrical points? Which rooms get flooring, and is it overlay or hack-and-lay? Is hacking included at all? Most packages assume a light BTO scope, and every departure from that scope is priced as an add-on at rates you haven't seen yet.

They can genuinely work for a straightforward flat where your needs match the assumptions. Where they mislead is resale flats, changed layouts, or anyone with more than a standard amount of storage to build. Ask for the package broken into the same line items as a normal quotation — if the numbers hold up, it's a fair deal, and if the breakdown never arrives, you've learned something.

The bottom line

Read quotations by quantity and specification, never by total. Ask what's excluded before you ask for a discount. And when one number is dramatically lower than the other two, assume it's describing less work until someone shows you otherwise. If you'd like a fully itemised comparison for your own flat, send us your floor plan and we'll break it down line by line.