What Should Be In a Singapore Renovation Quotation (And the Lines That Should Worry You)

A renovation quotation is not a price list. It is the contract that decides what you get, what you do not get, and who pays when something changes. Most disputes in Singapore renovations are not caused by bad workmanship. They are caused by a document that was too vague to argue with.

This is what a proper quotation contains, line by line, and the specific phrases that should make you ask another question before you sign.

The one rule: itemised, never lump sum

Every trade should appear separately, with a quantity and a unit rate. Hacking, masonry and tiling, carpentry, plumbing, electrical, ceiling and partitions, painting, glass and aluminium, permits, protection, haulage and final cleaning. A single line reading “renovation works, $48,000” is unusable: you cannot compare it, you cannot audit it, and you cannot dispute it.

The full checklist

1. Header and identity

• Registered company name, UEN and registered address.
• Quotation number and date, and how long the price is held.
• The property address and flat type.
• A named contact and their mobile number.

2. Demolition and hacking

• Exactly which walls, tiles, cabinets and fixtures are being removed, with quantities.
• Who applies for and pays for the HDB renovation permit.
• Disposal and debris removal, including how many trips.

3. Masonry, tiling and wet works

• Areas in square feet, per room, for floor and wall separately.
• Whether tiling runs floor to ceiling or floor to cabinet.
• Tile supply budget per square foot, if tiles are a provisional sum.
• Screeding, waterproofing and any levelling.
• Skirting type and length.

4. Carpentry

• Each item listed separately, with length in feet run and height.
• Carcass material, for example moisture-resistant plywood, and the finish, for example laminate, veneer or 2-pac spray.
• Hardware brand and whether soft-close is included.
• Countertop material, thickness and edge detail, and whether it is included at all.
• Internal accessories: pull-outs, drawers, tall units, integrated bins.
• Cabinet lighting, and the wiring for it.

5. Electrical

• The count of each point type: sockets, data, TV, lighting points, switches.
• Whether points are new, relocated or reused.
• Distribution board work, if any.
• Whether light fittings are supplied or only the points.

6. Plumbing and sanitary

• Every relocated or new point, listed individually.
• Concealed versus exposed pipework.
• Which sanitary ware is supplied, and to what budget.
• Confirmation that licensed trades are used where required.

7. Ceiling, partitions and painting

• False ceiling area in square feet, and where cove or bulkhead details apply.
• Partition construction and whether insulation is included.
• Paint brand, sheen and number of coats, and whether it covers the ceiling.

8. Glass, aluminium, doors and windows

• Door type, frame, ironmongery and finish.
• Glass type and thickness for partitions and shower screens.
• Any window works, and confirmation of a BCA-approved window contractor, since HDB requires window works to be done by one.

9. Air conditioning

• System, number of units, capacity and trunking runs.
• Whether it is inside this contract or a separate one.

10. Preliminaries and the boring lines that matter

• Site protection: floor, lift lobby, common corridor.
• Final cleaning before handover.
• Haulage and disposal.
• Warranty period and what it covers.
• Payment schedule and retention.
• Variation order process and rates.

The seven lines that should worry you

1. “Renovation works, as discussed.” Nothing was discussed that anyone can prove.
2. “Subject to site condition.” Fine as a qualifier on one item, dangerous as a blanket clause. Ask what specifically is uncertain and what the cost range would be.
3. Carpentry priced as a lump sum with no lengths. The most expensive part of the job, and the least verifiable.
4. A large deposit before site starts. Expect roughly 10 to 20% on signing, with the balance released against completed stages and a retention held to final inspection. A demand for half up front is a warning sign, not a discount.
5. Payment to a personal account. Pay the registered company, against a tax invoice showing the UEN. A request to PayNow a mobile number or pay cash is the point to stop.
6. No exclusions page. Every honest quotation has one. Its absence means the exclusions still exist, you just have not been told them yet.
7. A price that is far below the others. Usually it is not the same scope. Find the missing lines before you celebrate.

How to compare three quotations fairly

1. Build one spreadsheet with a row per trade and a column per firm.
2. Normalise carpentry to a rate per foot run at the same finish.
3. Count electrical points side by side.
4. Match tiling areas, floor to ceiling versus floor to cabinet.
5. Move every exclusion into the sheet as a cost you will pay to someone.
6. Only then compare totals.

Nine times out of ten the cheapest quotation stops being the cheapest by step five.

Payment structure, and why it is your best protection

Price protects you least. Structure protects you most. Payments tied to measurable completed stages mean the work is always slightly ahead of the money, and a retention held until after final inspection is the only real incentive for a contractor to come back and fix snags promptly.

CaseTrust-RCMA accreditation is worth checking for as an additional filter: it requires a standardised contract, transparent pricing and a deposit performance bond, which is the mechanism that makes a lost deposit recoverable rather than gone.

What a sensible payment schedule looks like

Percentages vary between firms. What should not vary is the principle: every payment is released against something you can see, and something is always held back until after the defects are fixed.

A worked comparison

Two quotations for the same 4-room flat. On the cover page, Firm A is $8,400 cheaper. Read further:

Add the countertop, the accessories, the additional tiling area and the cleaning back into Firm A and the gap closes to a few hundred dollars, with one important difference: Firm B’s figure is fixed and Firm A’s is still a guess. This is the single most common shape of a renovation cost overrun in Singapore, and it is entirely visible at quotation stage if you read past the total.

Variation orders: the clause that decides your final bill

Every renovation has changes. What separates a controlled project from an uncontrolled one is whether the change is priced before it happens.

Insist on three things in writing. First, that no variation is carried out until it has been quoted and approved by you, ideally by email or a signed sheet rather than a verbal on-site nod. Second, that variations carry the same unit rates as the original quotation where the work is the same type, so an extra four feet of wardrobe is priced at the contract rate rather than a new one. Third, that each variation states its effect on the programme as well as the cost, because two weeks of delay is a real price too.

Warranty, defects and what happens after handover

The quotation should state a warranty period and what it actually covers. Typical Singapore practice is a warranty on workmanship for a defined period after handover, with separate manufacturer warranties on appliances and specific products. Waterproofing is normally warranted separately and for longer, because that is where failures are most expensive.

Ask specifically what voids it. Common exclusions include damage from a third party engaged after handover, normal wear, and anything modified by another contractor. And be clear on the process: who you contact, how quickly they respond, and whether the retention is what motivates them.

The small print worth reading

• GST. Check whether prices are quoted before or after GST, and whether the firm is GST-registered. On a $50,000 contract this is not a rounding difference.
• Price validity. A quotation held for 30 days means something different from one held for 90.
• Provisional sums. Each should state its allowance so you know the cost of choosing something dearer.
• Delay. Is there any provision at all if the project overruns significantly, and what triggers it?
• Insurance. Does the contractor carry public liability and workmen’s compensation cover, and will they show you the certificate?
• Protection and reinstatement. Who repairs the lift lobby or corridor if it is damaged during works?

Common questions

Is a quotation legally binding?

Once signed and a deposit paid, it typically forms the contract. That is precisely why the exclusions and the variation clause matter as much as the price.

What is a provisional sum?

A budget allowance for something not yet chosen, most often tiles or sanitary ware. It is legitimate, but it must state the allowance clearly so you know what happens if you choose something dearer.

How much should I hold as retention?

A small final percentage released after handover and defect rectification is normal practice. Agree the figure and the release trigger in writing before signing.

Should the quotation include drawings?

For anything involving carpentry, yes. Elevations for each item, with dimensions, are what turn a price into a specification.

The summary

Ask for it itemised, read the exclusions first, structure the payments against completed stages, and keep a written variation log. A renovation quotation that survives that treatment is one you can sign without wondering what you have agreed to.

Figures in this article are Singapore market ranges as at August 2026 and are not a quotation. Verify HDB requirements against HDB’s own renovation guidelines before committing to any scope.