Updated 27 Sep 2026. A cheaper HDB renovation quotation is only cheaper if it covers the work you actually need. Before comparing totals, give each contractor the same room-by-room scope and ask them to identify exclusions, allowances and charges that can change. A missing item is an unanswered cost, not a saving.
This guide helps owners compare quotations before signing. It does not supply market-average prices or a standard renovation package. Use our renovation budget guide to set your household limit and the HDB renovation timeline guide to plan permits, working hours and handover.
Give every contractor the same starting point
List what you want to keep, remove, replace and add in each room. Attach the same drawings and photographs to every request. Specify the intended use: a kitchen for daily cooking, a desk used throughout the working day, or storage that a family member must reach without climbing. Ask contractors to identify where a site measurement or inspection is still needed.
Separate essential work from optional upgrades. If one quotation includes a new wardrobe and another assumes you will retain the old one, their totals do not answer the same question. Ask for the optional item as a separate price so you can see what dropping it really saves.
Check the contracting business, not just the salesperson’s name. HDB’s renovation guidance requires contractors from its Directory of Renovation Contractors, including for renovation work that does not need HDB approval. HDB is not a party to your private contract. Directory listing should not be mistaken for a guarantee of price, workmanship or a refund.
Compare the description beside the price
| Line item | What needs to be written down |
|---|---|
| Carpentry | Dimensions, material, finish, fittings, internal layout, installation and anything charged separately. |
| Flooring | Measured area, specified finish, preparation, removal or overlay, disposal and treatment of edges. |
| Electrical | Number and location of points, supplied fittings, testing, making good and the responsible specialist. |
| Kitchen fittings | Who supplies each appliance or fitting, who installs it, and who confirms dimensions and connections. |
| Site costs | Protection, haulage, debris removal, cleaning and any separately charged access arrangements. |
| Total | Tax treatment, exclusions, provisional amounts, validity period and payment milestones. |
Ask what an allowance buys. A stated allowance for tiles is different from a fixed price for the exact tiles you have selected, installed with the agreed preparation. If the final selection costs more, establish how the difference is calculated and approved. Do not accept a vague “premium finish” as a substitute for an identifiable specification.
For specialist work, confirm the actual provider and credentials. HDB’s permit guidance identifies trade-specific requirements and work needing a qualified person. A quote that includes a job is not approval to carry it out. Ask which permission, professional input and associated cost the proposal assumes.
Put excluded costs back into the comparison
Suppose two hypothetical quotations cover an otherwise identical agreed scope, with all figures including any applicable tax. Quote A is $36,000 but excludes $2,400 of electrical work and $1,200 of disposal and protection that the household needs. Quote B is $38,500 and includes those exact items to the same specification.
For this comparison, A becomes $39,600: $36,000 + $2,400 + $1,200. B is therefore $1,100 lower on the defined scope, even though its headline was $2,500 higher. These are invented teaching figures, not current renovation prices or evidence about any contractor.
If the excluded work has not been priced, write “unpriced” beside it and obtain a quotation. An arbitrary allowance can help you test affordability, but it should remain labelled as your assumption. It is not a contractor’s commitment and must not silently become a verified comparison total.
Check the downside too. If an unresolved item later costs $3,000, can your household fund it without using money reserved for essential bills? A lower headline that leaves more uncertain work may be a worse fit for a tight cash budget. Reducing the scope is an alternative to borrowing or hoping the exclusions cost nothing.
Compare the payment schedule and protection
Ask what has to happen before each payment is due and what evidence you will receive. The timing matters: money due before materials arrive affects your cash differently from money due after a defined stage is completed. Check how a delay, rejected material or unfinished item is handled under the actual contract.
CaseTrust’s renovation schemes specify standard contracts, milestone payments, written variations and a maximum 20% initial deposit. Those are scheme requirements, not a universal deposit rule for every contractor. Check the exact entity’s current accreditation, the applicable protection and your proof of the protected sum. A logo alone does not establish what your particular payment is covered for.
For example, 20% of the hypothetical $38,500 contract is $7,700. That calculation does not mean you should automatically pay that amount or that it is guaranteed to be recovered. Read the agreed payment terms and protection documents before transferring money.
Agree variations before they become work
Keep one dated version of the accepted quotation and drawings. For each proposed change, ask for the added or removed work, price adjustment, tax treatment, effect on completion and payment timing. Obtain the written agreement before relying on the revised scope. A message saying “go ahead” without an identified price can leave both parties arguing about what was accepted.
Include credits as well as extras. If you remove an item, ask whether the full price is credited or whether design, ordering or fabrication costs have already been incurred under the contract. Do not assume a cancellation produces an automatic full refund.
For an owner-occupier, test the finished scope against daily use before cutting costs: storage, lighting, cleaning and access may matter more than decorative upgrades. For a landlord, compare repairability and replacement costs without assuming the renovation will earn a particular rent. Keep any projected rental uplift out of the budget unless you have evidence for it.
Make the final choice on a complete proposal
Choose only after the scope, remaining uncertainties, payment dates and responsibilities are clear enough to compare. Keep the contract, drawings, invoices, receipts and dated correspondence together. If essential questions remain unanswered, request a revised proposal or seek another quotation before committing.
Sources and correction note: HDB and CaseTrust pages linked above were opened and checked on 27 September 2026. The comparison method is editorial guidance and the examples are hypothetical. This replacement removes unsupported cost tables, an unverified repair-allowance claim, misleading loan and grant statements, incorrect work-hour advice, invented household examples and speculative policies from the earlier article. It does not replace technical or contract advice for a particular renovation.
Featured photograph: Choa Chu Kang Way, 31 October 2022, by Wzhkevin, via Wikimedia Commons, CC BY-SA 4.0, resized. Archive HDB neighbourhood context; none of the quotations describes a pictured flat.
