Renovation quotation comparison in Singapore: a worksheet

For a renovation quotation comparison in Singapore, put both quotes on the same price basis first, then score each against the five areas in the Competition and Consumer Commission of Singapore’s (CCS) guide for the renovation industry: timeline, itemised pricing, description of the work, exchange, repair and refund terms, and changes only with your express agreement. IRAS says GST-registered businesses may not quote prices without GST; its page does not mention renovation, so applying that to a “plus GST” renovation quote is our inference, and such a quote is one to query before you compare.

The worksheet below is this publication’s own, not a CCS, IRAS or Courts form, and it names no firm. This is general information, not legal advice. Every quote, price and score in the examples is invented for illustration.

What do CCS’s five areas ask a renovation contractor to cover?

CCS’s page on fair trading practices for the renovation industry (last updated 26 September 2025) summarises its guide for the industry. The guide uses “Contractor” to include interior designers as well as renovation contractors, so the same areas fit an interior designer quote comparison. It is written for contractors, to raise their awareness of good practices and of conduct that may constitute unfair practices under the Consumer Protection (Fair Trading) Act 2003. CCS puts the timeline, description and remedies in the contract, so at quote stage a missing start date is a question to ask, not a finding about the contractor (our reading).

How do I put two renovation quotes on the same footing?

Give both contractors the same written brief so that they price the same scope; our product-comparison brief method was written for purchases, but the habit carries over. When the quotes arrive, make four adjustments before comparing totals:

1. Same tax basis. Work out what you would pay with GST, if it is charged (next section).
2. Same scope. Match each item in the more detailed quote to the other; where one is silent, write “not stated” and ask.
3. Same mandatory charges. CCS’s Guidelines on Price Transparency, in effect from 1 November 2020 for all suppliers, say unavoidable or mandatory charges such as taxes, surcharges and service fees should be in the total headline price. Add any that one quote shows separately.
4. Same unknowns. For a line marked “to be confirmed”, ask for a written estimate and carry it into your total. CCS’s renovation page says contractors should disclose charges that cannot be calculated in advance and give estimates before the contract is entered into.

An illustrative pair (invented figures) for the same kitchen and bathroom refresh:

• Quote A: S$16,500 “plus GST”, in eight itemised lines, from a business the homeowner has confirmed is GST-registered.
• Quote B: a single sum of S$18,000 headed “full renovation as discussed”, with no items and no mention of GST.

At first glance A is S$1,500 cheaper. Our arithmetic at 9%: GST on A is S$1,485, so A comes to S$17,985. B’s S$18,000 is comparable only if it already includes any GST due, which B should confirm in writing. If B meant S$18,000 plus GST, it is S$19,620 (GST of S$1,620), S$1,635 above A. Even on B’s best reading A is only S$15 cheaper, not S$1,500, and A shows what the money buys while B does not yet.

Is a “plus GST” renovation quote acceptable in Singapore?

IRAS’s page on buying from a GST-registered business (last updated 13 November 2025) says GST-registered businesses are not allowed to display, quote, advertise or publish prices without GST, and that those who do not comply with the price display requirement could be subject to a fine. Its examples:

• Acceptable: “$109 w/GST” and “$109 (inclusive of GST)”.
• Not acceptable: “$100 + GST”, “$100 + 9% GST” and “$100 + $9 GST”.

Our inference: the page lists “quote” among the ways of presenting a price but never mentions renovation, so applying its rule to a renovation quote is our reading, not an IRAS ruling. On that reading, “S$16,500 + GST” from a registered business has the same form as “$100 + GST”, which IRAS lists as not acceptable. Ask for a revised quote with the GST-inclusive price (our suggestion), and treat a first-draft slip as a prompt to ask, not proof of anything.

The page also says only GST-registered businesses may charge and collect GST, and links an IRAS e-Service to check registration. The examples assume 9%, the standard rate on IRAS’s GST overview (last updated 16 October 2026), which says most local provision of services is standard-rated; go by the GST line on your own quote.

How do I score two quotes on CCS’s five areas?

Score each area 0 (nothing in writing), 1 (vague or incomplete) or 2 (specific and in writing) for each quote. The scale is ours, not CCS’s. Copy these lines:

• 1. Timeline (agreed start and completion dates, how delays are managed): Score A __ B __
• 2. Pricing (itemised, GST-inclusive total, mandatory charges included, estimates for charges not yet known): Score A __ B __
• 3. Description (reasonably detailed breakdown: materials, areas, quantities): Score A __ B __
• 4. Exchange, repair, refund (rights stated, warranty period, what it covers, who honours it, how to claim): Score A __ B __
• 5. Consent (how a change is proposed, priced and agreed with your express agreement): Score A __ B __

For the illustrative pair, one honest scoring is:

• Timeline: A 1 (“about six weeks”, no dates, nothing on delays); B 2 (dates and a delay clause).
• Pricing: A 1 (itemised, but “plus GST” and one open line); B 0 (a lump sum).
• Description: A 2 (each line names area, material and quantity); B 0 (“full renovation as discussed”).
• Exchange, repair, refund: A 0 (silent); B 1 (a warranty period, nothing on how to claim).
• Consent: A 0; B 0.

That is 4 for A and 3 for B, and a one-point lead on a three-step scale is not a verdict. The grid gives you the questions: dates, delay terms, a GST-inclusive price, an estimate for the open line and warranty terms from A; items, GST status and warranty detail from B; how changes are agreed from both. A contractor who will not answer in writing has told you something too (our inference). The grid shows what a firm has committed to on paper, not whether it will deliver.

What counts as a hidden cost in a renovation quote?

CCS’s renovation page heads its pricing area “Transparent Pricing with No Hidden Costs”, and its price-transparency guidelines encourage an “opt-in” or “opt-neutral” approach to optional add-ons. In a quote, look for extras included by default instead of listed for you to accept or strike out, and for charges in the terms or after the total but not in it. No page read for this article says which charges a renovation contractor may make or sets a rule on deposits or payment stages, so this worksheet does not say what is normal; compare when each payment falls and what it is tied to.

How do I track changes after signing?

CCS’s fifth area says revisions to the contract or work order variations should be made only with your express agreement. The page does not say the agreement must be written; a written record is our suggestion, because it lets you show what you agreed. Keep a variation-order log, one row per change:

• Number, date raised and who asked
• Scope change: added, removed or substituted
• Price change in S$, with GST stated
• Effect on the completion date
• Your consent: date, how it was given and by whom
• New contract total

An illustrative row (invented): VO-1, 9 November 2026, two extra kitchen sockets, +S$180 including GST, completion date unchanged, consent by signed note on 9 November, new total S$18,165 (Quote A’s S$17,985 plus S$180). A blank consent cell is a prompt to resolve the point before that work goes ahead (our suggestion). Our checkout records guide covers what to keep when you pay for a purchase; the habit is the same.

When could the Small Claims Tribunals help?

The Singapore Courts’ page on cases eligible for a small claim (last updated 2 June 2026) gives a renovation contract as its example of a contract for the provision of services. It says claims with a total value of up to S$20,000, or S$30,000 with a Memorandum of Consent from both parties, can be heard, must be filed within two years of the event that created the cause of action, and must be served on a respondent in Singapore. Steps and fees are in our Small Claims Tribunals guide; the Courts’ page is general guidance, not legal advice.

What to check before you sign

Confirm in writing that both quotes are on the same GST basis (and that any GST comes from a business you have checked is registered), that the itemised scope is attached with an estimate for each open line, that dates, delay handling and warranty terms are written down, and how a change is agreed. Permits, approvals and any accreditation of the contractor are outside this worksheet: confirm them with the relevant authority.

Other method guides for big purchases are collected under comparing, and the consumer rights route-finder shows where else to turn if a purchase goes wrong.

Common questions