How to Compare a Hong Kong Renovation Quotation Before Signing
Give each contractor the same room list and work description. Then move each quotation into one comparison sheet. You need enough detail to see a scope gap before a price difference can mean anything.
Normalize the scope before comparing prices
The Consumer Council advises consumers to request a detailed, clear, and accurate quotation. Its renovation quotation criteria cover work and unit breakdowns, unit prices, payment method, contract terms, contract period, and insurance-premium breakdowns. Review the Consumer Council quotation guidance beside each proposal.
Create one row for each work item. Use the same room name and description across contractors. If one quotation groups several tasks under a lump sum, ask for a breakdown before comparing it with itemised work.
| Scope field | Entry to compare |
|---|---|
| Location | Room or work area |
| Work | Removal, preparation, supply, installation, or finish stated in the quote |
| Quantity | Number, length, area, or other unit used by the contractor |
| Material | Product or specification stated in the quote |
| Exclusion | Work or material left outside the amount |
Check quantities, unit rates, payment, and programme
Put each contractor’s quantity and unit rate beside the work item. Keep the quoted total, payment stages, contract period, and insurance entry in separate columns. Those fields come from the Consumer Council’s comparison criteria.
Do not repair a missing field with your own estimate. Mark it as unanswered and ask the contractor to issue a written revision. Record the event that triggers each payment and the document that marks completion of that stage.
Identify regulated or structural work
The Buildings Department distinguishes exempt household renovation from work under the Minor Works Control System. Its guidance also identifies work for which owners need prescribed building professionals or registered contractors. Use the Buildings Department domestic alteration guidance to frame questions about the proposed work.
Ask each contractor to mark any item that needs a building-control step and name the person or contractor responsible for it. Request the record that supports that answer. Do not classify structural or safety risk from a quotation alone.
Record variations, sign-off, and handover evidence
Before signing, create a variation form with the work item, price change, time change, requester, and approval. Use it for each change rather than editing the original scope without a trace.
Define the evidence for handover by work item. Examples include the contractor’s completion note, a material record named in the quotation, or a document linked to a regulated work item. Record open defects and the agreed owner for each response. Keep the signed quotation, revisions, variation records, payment documents, and handover file together.
Common questions
What should a Hong Kong renovation quotation contain?
The Consumer Council advises consumers to request a detailed, clear, and accurate quotation, and it assessed quotations against ten criteria, including detailed work and unit breakdowns, unit price, sum total, labour and material costs, method of payment, terms of contract, contract period, and breakdown of insurance premium. See the Consumer Council quotation guidance.
How common were vague quotations in the Consumer Council survey?
The Council asked 11 contractors to quote for a 400-square-foot flat. Two supplied quotations that the Council described as detailed and comprehensive, and the average score was 5.5 out of 10. Terms of contract received the weakest results. See the Consumer Council quotation guidance.
Which works need an authorized person and a registered structural engineer?
If the work affects the building’s structure, such as removal of a structural wall, beam, or column, the Buildings Department says the owner must appoint an authorized person and a registered structural engineer, submit building plans, and use a registered contractor after the Department grants approval and consent. See the Buildings Department domestic alteration guidance.
Which simple household works are exempt from prior approval?
The Department treats simple works such as plastering, laying tiles, and repairing or replacing sanitary fitments as exempted building works. These works need no prior approval or registered appointment. They must comply with building regulations for fire safety, structural safety, and drainage. See the Buildings Department domestic alteration guidance.
What penalty does the Buildings Department state for work that needed prior approval?
For building works that require prior approval, the Department states that a conviction can bring a maximum fine of HK$400,000 and two years’ imprisonment. See the Buildings Department domestic alteration guidance.
Sources
All information is compiled from sources available on the open internet.
- Survey Found Home Renovation Quotations Generally Vague Industry Urged to Improve Quotation Quality to Avoid Disputes — Hong Kong Consumer Council. Accessed 2026-07-21.
- Alteration and Addition Works in Domestic Premises — Hong Kong Buildings Department. Accessed 2026-07-21.