Two renovation quotations can list the same rooms and still buy you different work. One includes removing old cabinets and making good the walls; another prices only the new carpentry. A lower total tells you little until those differences are clear.
Quick answer: Choose a renovation contractor by giving each firm the same brief, verifying the legal business and relevant credentials, reviewing comparable completed work, and meeting the person who will supervise the project. Compare itemised quotations on the same scope and tax basis. Before paying a deposit, ensure the contract records the drawings, materials, exclusions, timeline, payment milestones, variation process, warranties and defect arrangements.
Choosing a renovation contractor starts with a shared scope, evidence of similar completed work and an explanation of who will manage your project. The quotation and contract should then turn those discussions into specific deliverables, payment milestones and arrangements for defects.
This guide takes you through that selection process, from the first enquiry to the checks before paying a deposit. It provides general information, not legal advice.
Define the work before asking for prices
Give each shortlisted contractor the same brief: the rooms involved, what stays, what changes, your spending limit and when you need the home ready. Include photographs and a floor plan, but arrange a site visit before settling the scope and price.
If you are still comparing HDB flats for sale, note which existing fittings you could retain. A kitchen that works for you may need repairs and selected replacements rather than complete removal. The contractor’s quote should reflect the actual condition and your plans for that unit.
Separate essential work from optional additions. For example, ask for a necessary kitchen replacement as the core scope, with a separate price for a decorative living-room feature. This makes it easier to reduce spending without losing track of what the project must achieve.
Also clarify how much design help you need. A contractor offering to build from agreed drawings may suit you if the layout and finishes are already resolved. If you need layout options, detailed drawings and material coordination, establish who will provide them and at what fee. Choose by the services included rather than the job title alone.
Check the business and relevant credentials
Start with the legal entity behind the brand. ACRA’s Bizfile search guidance explains how to search by business name or Unique Entity Number (UEN) and check basic details, including live status and registered address. Match that identity to the quotation, contract and invoices, and clarify any different payment recipient before transferring money.
For an HDB flat, HDB’s renovation guidance requires owners to engage a contractor from its Directory of Renovation Contractors (DRC), including for work that does not require HDB approval. HDB distinguishes works that require a permit from those that do not. Check the business that will carry out your renovation, including when a separate firm handles design or sales.
A DRC listing does not replace work-specific licensing. HDB’s renovation-permit guidance identifies additional requirements for certain work. Water-service and sanitary work may require a PUB Licensed Plumber; gas-service work requires an EMA Licensed Gas Service Worker; electrical installation requires an EMA Licensed Electrical Worker; and window work requires a BCA Approved Window Contractor listed with HDB. Confirm which requirements apply to your scope.
Treat directory listing as an eligibility check; assess the contractor’s workmanship and delivery separately. HDB says it does not endorse or guarantee the quality of DRC contractors’ work. Ask who will identify the approvals needed for your particular scope and handle the applications. A sales assurance that an alteration is possible should not settle whether it is permitted.
For a condo, obtain the development’s renovation procedures from the management office. Ask the contractor how any application, work-hour, delivery or lift-protection arrangements will affect the programme and quote. Establish which apply to your development rather than assuming one estate’s procedures apply everywhere.
Understand what CaseTrust covers
CaseTrust’s renovation accreditation page sets out safeguards including a standard renovation contract, progressive payments and a deposit performance bond against events such as business closure. Accredited businesses provide a 12-month workmanship warranty, subject to the contract’s terms.
For businesses under this scheme, initial deposits are capped at 20% of the total cost. CaseTrust also requires protection for prepayments and says the consumer should receive proof showing their details and the protected sum. These protections apply to the accredited contracting business, not merely to a related brand or salesperson.
Verify the exact business in the accredited list linked from that page. Ask for proof of the protection applicable to your payment, including the protected sum and claim conditions. Accreditation does not remove the need to assess the proposed work or read the contract.
Assess similar work and the person running it
Ask for completed projects with a comparable scope. A whole-home showcase may reveal little about how a contractor manages a bathroom replacement while the household remains in the flat.
Where the homeowner agrees, view a completed project or speak to a recent client. Look at details you can reasonably assess: cabinet doors opening smoothly, finish consistency and whether the completed work matches the agreed drawings. A viewing gives useful evidence, but it does not establish the quality of concealed work.
Ask the client what happened when something went wrong. Were extra charges explained before work proceeded? Did the contractor return to address defects? Those answers can be more useful than a general recommendation.
Meet the person who would supervise your renovation. Useful questions include:
- Who coordinates the different trades and checks their work?
- How often will you receive updates, and when can you visit the site?
- Who can approve a change, and who covers the project manager’s absence?
- What other commitments could affect the proposed start or completion date?
Use online reviews to identify issues worth investigating. Repeated comments about missed updates or unresolved defects can guide your questions, but a rating alone cannot establish how your project will be handled.
Compare renovation contractor quotations on the same basis
Request itemised quotations after discussing the actual site conditions. CCS’s fair-trading guide says renovation pricing should be clear and itemised, with mandatory charges disclosed upfront and estimates provided where charges cannot yet be calculated.
Use the following comparison to turn broad package descriptions into questions:
Removal and preparation
Dismantling, disposal and making good
What happens to surfaces exposed after removal?
Carpentry
Dimensions, internal layout and fittings
Which drawings and specifications form the price?
Finishes and materials
Product details and selection allowances
What changes the price if you choose another finish?
Electrical and plumbing
Listed points, fittings and connections
What is included, excluded or priced after inspection?
Site and completion costs
Protection, cleaning and applicable charges
Which amounts sit outside the package total?
An allowance is an amount set aside for a selection; it does not tell you what your final choice will cost. For any provisional amount, ask what remains uncertain and how the eventual charge will be established. Confirm whether Goods and Services Tax (GST) applies to each quotation before comparing totals.
Consider a hypothetical comparison where both contractors quote on the same tax basis. Quote A is S$30,000, excluding removal and disposal subsequently priced at S$2,000 and electrical work at S$1,500. Its comparable total becomes S$33,500. Quote B is S$34,000 and already includes those items.
The apparent S$4,000 gap becomes S$500, assuming the remaining quantities, materials and scope match. These figures illustrate the calculation, not typical renovation prices. Ask for revised quotations that make the agreed inclusions explicit before choosing.
Agree on payments and changes before signing
Read the payment schedule alongside the work programme. Ask what each milestone means, how completion will be demonstrated and what happens if work is delayed. A date on an invoice and a completed stage of work are different payment triggers.
The State Courts’ renovation contract guide recommends clarity on deposits, staged payments and whether any payment can be withheld until defects are fixed. Negotiate these arrangements before signing; do not assume you can retain a sum that the contract makes payable earlier.
For the deposit, ask what it funds and what the cancellation and refund terms are. Keep invoices and receipts, and confirm any request to change payment details through an established contact. Do not treat CaseTrust’s 20% cap as a general rule for businesses outside that accreditation scheme.
Set an approval process for variations. CCS’s guide says changes should have the consumer’s express agreement. Ask for a written variation showing the added or omitted work, price and effect on completion before authorising it. If concealed damage is discovered after dismantling, request an explanation and supporting photographs before deciding how to proceed.
Plan for delays and defects
Have the contractor explain the sequence of work and the decisions needed from you. Late approval of drawings or materials can affect your plans, so establish selection deadlines as well as the contractor’s milestones.
If you will remain in the home, ask when the kitchen or bathroom will be unavailable, how belongings will be protected and whether the proposed sequence is workable. If you need to move in by a particular date, discuss what happens if the home is not ready. Avoid booking dependent deliveries solely on an informal estimate.
For handover, agree how unfinished items and defects will be recorded and resolved. The State Courts’ guide distinguishes warranties for materials or fittings from services such as installation. Ask who handles each type of issue, the relevant coverage and exclusions, the defect-liability period, and how to report a problem.
Resolve warning signs before paying
Pause if the contractor will not identify the contracting business, explain a major exclusion or put a significant promise into the agreement. Other reasons to seek clarification include pressure to pay before reviewing documents, unexplained payment recipients and refusal to describe the proposed work beyond a package label.
A low quotation or a busy schedule alone does not prove a problem. What matters is whether the contractor gives specific, consistent answers and records the agreement. If a dispute later arises, the State Courts’ guide describes CASE and third-party mediation as possible avenues before court proceedings. The appropriate route depends on the circumstances.
Make the final selection
Choose a renovation contractor whose relevant work, proposed supervision and documented scope you can assess with confidence. Before paying the deposit, reconcile the final quotation, drawings, exclusions, payment schedule and completion arrangements so they describe the same project.
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