Best Mould Removal in Singapore: 11 Services, Real Prices (2026)

Mould in a Singapore home is almost never a cleaning problem. It’s a water problem wearing a cleaning problem’s clothes — and the difference decides whether you spend S$199 or S$4,000, and whether it comes back in a month. This comparison is built from the published prices, methods, warranty terms and fine print of eleven companies, read in August 2026. We haven’t hired any of them. What we’ve done is the homework: exactly one publishes a real rate card, two of the eleven have websites that are dead or offline, and the most-quoted “cheapest price in Singapore” belongs to a company that no longer exists. Before any of that, though, there’s a question worth asking — because in a lot of cases somebody else is supposed to pay.

What it actually costs

Service	Published price	Fixes the water source?	Warranty
Picox	S$199 first surface, +S$100 each extra; flat S$1,200	Diagnoses; repair quoted separately	90 days–24 mths, exclusions published
HVAC Engineering	From S$430 incl. anti-mould paint	No diagnosis offered	“Warranty is provided!!” — no terms
Four Solutions	S$250–2,500 typical; replastering S$80–150/area	Diagnoses; repair excluded in T&Cs	3–12 mths per contract
Mouldgone	S$100 inspection, refundable; treatment quoted	Diagnoses; does not repair	6 months
repair.sg	“From S$400 / S$1,500” — disclaimed on the same page	No on-site diagnostic step	None published
Bustmold	Nothing — declines to quote without a visit	Claims to identify and fix	Open-ended re-treatment
Ecosense	Nothing	Diagnoses; sells waterproofing separately	None
Moldmedic	Nothing	No moisture diagnosis at all	None
Tricoat	“From S$300” (archived — site offline)	Claims to; no repair service exists	6 months “typically”
Lumiair · Air & Odor Mgmt	Nothing	Not stated	Not stated

Prices are each company’s own published figures as of August 2026. For scale, Singaporeans on local forums report paying S$800 for a ceiling treatment and S$4,000 for a five-room flat — the latter with painting billed separately.

Before you pay: check whether someone else should

This is the part no vendor page will tell you, and it’s worth more than any discount below.

If the water is coming from the flat above you, that’s inter-floor leakage, and under the HDB lease the upper and lower owners are jointly responsible for the floor slab between them — it isn’t automatically your neighbour’s problem or yours. HDB’s Goodwill Repair Assistance scheme exists to break the deadlock: HDB pays 50% of the repair, the two owners split the rest at 25% each, capped at S$300 per repair location (HDB covers the full cost for rental flats). The detail most people miss is that you don’t apply to HDB directly — the referral comes through your estate’s Grassroots Adviser. Note also what it doesn’t cover: the slab gets repaired, but your ruined false ceiling, cabinets and light fittings don’t.

If your flat is new, don’t file on the mould — file on the water. Mould isn’t a listed defect under the one-year Defects Liability Period, but the things that cause it are covered for much longer: ceiling leaks from toilets and kitchens for 5 years, external wall seepage for 5 years, and spalling concrete for 10. Since mould usually appears well after the DLP closes, that five-year seepage warranty is the more useful right — report it through the Building Service Centre or the HDB app.

If it’s your neighbour’s air-conditioning, you’re in the least satisfying position, and you should know that before you spend. This is common enough that HDB received 240 cases of condensation and mould attributed to neighbours’ aircon use in 2025 alone — a figure given in Parliament in January 2026. HDB will inspect and advise both parties on aircon settings and ventilation, but it does not assign liability and there’s no cost-sharing scheme equivalent to the one for floor leaks. Practical fixes reported locally are insulating the cold wall — roughly S$90 for DIY insulation panels, or about S$500 for a contractor-built false wall with rockwool.

And if it’s the roof, that’s common property: Town Council, not you.

The question that separates these companies

Every company on this list will remove visible mould. The one that matters is whether anyone finds out where the water is coming from — because the US EPA’s guidance is blunt about what happens otherwise: “don’t forget to address the source of the moisture problem, or the mold problem may simply reappear.”

On that test the market splits three ways:

Diagnose and claim to fix it — Bustmold (“identify the moisture source, fix the underlying problem”), Ecosense (which separately sells roof waterproofing, an actual remedy).
Diagnose but explicitly won’t fix it — Four Solutions and Picox both bring real instruments (moisture meters, thermal imaging), and both put structural repair outside the scope in their own terms. Mouldgone investigates the cause thoroughly and reports it; fixing it is yours.
Neither — HVAC Engineering offers no moisture diagnosis at all, and repair.sg’s “assessment” is a fifteen-minute WhatsApp video call.

Then read the warranty, because that’s where the value quietly evaporates. Four Solutions’ is void if there’s “water seepage or roof/wall leaks”, “high condensation due to poor ventilation or air-conditioning”, or a moisture reading above 16%. Picox’s excludes “seepage, structural defects… and new water ingress events.” Both companies deserve credit for publishing their exclusions — nobody else does — but read what they say: the guarantee doesn’t cover the things that actually cause mould in Singapore.

Rank 1:Picox Mould Removal(external site)

Price: S$199 first surface, +S$100 each additional; whole flat S$1,200

The only company in this market with a genuine rate card, and it’s a detailed one: S$199 for the first full ceiling or wall (a promotion, down from S$299), S$100 for each additional surface in the same room, S$400 for the Signature tier with premium paint and a 24-month warranty, S$120 a trip for wardrobe interiors or silicone joints, S$1,200 for a whole-flat audit. Anti-mould paint is included in the surface price, which nobody else does. Read the headline carefully, though: S$199 buys one surface, not a room — a bathroom ceiling plus one wall is S$399. Diagnostics are the best published (FLIR thermal imaging, moisture mapping, lab swabs from S$499), and they’re the only firm selling actual waterproofing works. Marks against: the inspection fee appears as free, S$220, S$299, S$499 and S$599 across different pages of the same site, and the ISO 9001 and IICRC badges carry no issuer or certificate number.

Verdict: Best if you want to know the price before you call — the only real rate card in the market.

Rank 2:Mouldgone(external site)

Price: S$100 inspection (refundable against treatment); treatment quoted after

Mouldgone charges S$100 for the inspection and refunds it against treatment — the only company that gates the quote behind a diagnosis, and the right order of operations. The report lands the same day and names the cause, not just the mould. They also name their chemicals (Concrobium Mould Control and a botanical disinfectant, with safety data sheets on request), which no competitor does, and they’ve been absorbed into Rentokil Initial — comfortably the strongest real credential on this page, given how many rivals cite trade-body logos with no numbers. The caveats are scope and price: the service is physical removal plus antimicrobial misting with no painting or reinstatement, so you’ll need a second contractor, and one local homeowner reports paying S$4,000 for a five-room flat. Warranty is six months, terms unpublished.

Verdict: Best diagnosis-first option, and the only one with a parent company you've heard of.

Rank 3:Four Solutions(external site)

Price: S$250–2,500 typical; replastering S$80–150 per area

Four Solutions publishes the things everyone else keeps vague. They’re the only firm on this list showing a verifiable Singapore licence number (NEA Vector Operator Licence NEA201812722M), they name their diagnostic kit (moisture meters, UV inspection, thermal imaging), they publish a realistic range of S$250–2,500 with replastering itemised at S$80–150 per area, and — uniquely — they publish exactly what voids the warranty. That transparency cuts both ways: those exclusions rule out leaks, condensation and any moisture reading above 16%, and the marketing advertises “up to 24 months” while the contract caps it at 12. Also budget for the mechanics: a 50% deposit, S$100 for a same-day reschedule, and 20% of contract value for a late cancellation. 4.9 across 100+ Google reviews.

Verdict: Best paperwork — the only firm publishing a licence number and what voids its warranty.

Rank 4:Bustmold(external site)

Price: Quote only — refuses to publish figures

Bustmold is the most explicit on this page about the thing that actually decides recurrence: “We don’t just clean mold off surfaces. We identify the moisture source, fix the underlying problem.” The process is the most complete too — containment, negative air pressure, industrial HEPA scrubbers, antimicrobial treatment, and optional post-remediation clearance testing with accredited lab analysis. The inspection is free, including a video option, and the guarantee is the boldest wording in the market: “If the mold comes back, so do we — at no additional cost,” with no end date. Two things to weigh. They publish no prices at all, by policy. And the credentials are almost entirely North American trade bodies, while the “20+ years, 15,000 inspections” figures belong to the global Mold Busters brand rather than the Singapore operation — as does the guarantee’s escape hatch, which excludes cases where their recommended moisture fixes weren’t carried out.

Verdict: Best on the thing that matters — fixing the water — if you can accept a blind quote.

Rank 5:Ecosense(external site)

Price: Quote only

Ecosense earns its place on one paragraph of unusual candour, which draws the distinction the rest of the industry blurs: mould removal, they write, “does not treat the underlying issues, such as a damp environment,” whereas mould treatment also means “identifying potential mould sources.” They sell both, separately, and they’ll also quote roof waterproofing — a real remedy rather than a coating. They’re the only company here offering SS 554 indoor air quality testing under SAC-SINGLAS accreditation, if you need a defensible number for a dispute. Against that: no prices anywhere, no guarantee of any kind (the strongest wording is that recurrence is “unlikely”), and their own pages can’t agree whether they’re “NEA-Certified” or “NEA-Approved”, or whether they have seven years of experience or ten. Rated 4.9 across 223 reviews.

Verdict: Best for honesty about what cleaning alone won't fix, and the only accredited air testing.

Rank 6:HVAC Engineering(external site)

Price: From S$430, anti-mould paint included

The cheapest published price for an actual job rather than an inspection: from S$430, which includes a whitewash of anti-mould paint with an antimicrobial mixed in. Their Active Mold Control product genuinely appears on NEA’s interim list of household products effective against fungus — though note that certifies the product, not the workmanship. The inspection is free and the quote arrives within three days. What you’re not buying is any attempt to find your leak: there’s no moisture meter, no thermal imaging, and no diagnostic step of any kind in their process, which is essentially clean-and-paint. The warranty reads, in full, “Warranty is provided!!” — no period, no scope, no terms. Fine for a small condensation patch in a bathroom you already understand; the wrong call for a recurring stain whose source you don’t.

Verdict: Cheapest published all-in job — but nobody will be looking for your leak.

What the evidence actually says

Four things worth knowing before you spend, all from the US EPA’s guidance — the standard the better companies here quietly follow:

Under about one square metre, this is a DIY job. EPA sets the threshold at 10 square feet — roughly a 1m × 1m patch — and says “in most cases, you can handle the job yourself” below it. Their method is unglamorous: scrub with detergent and water, then dry completely. A lot of the quotes in this market are for patches well under that line.
Killing mould isn’t enough. “Dead mold may still cause allergic reactions in some people, so it is not enough to simply kill the mold, it must also be removed.” That’s the case against spraying-and-painting, and against the S$800 job one local homeowner described as a company rolling anti-mould paint over the problem.
Bleach isn’t the answer, but not for the reason you’ve read. EPA says biocides including chlorine bleach are “not recommended as a routine practice during mold cleanup.” The widely-repeated claim that bleach’s water content “feeds the roots” on porous surfaces is remediation-industry framing, not an EPA finding — treat it accordingly.
Porous things usually can’t be saved. Ceiling boards, gypsum, MDF and chipboard — which is most built-in carpentry here — can’t reliably be cleaned through, and EPA says they may simply have to be discarded. Surface-treating a mouldy wardrobe backing is cosmetics.

And the prevention rule that beats every product on the market: dry it within 24 to 48 hours. Per EPA, materials dried within that window usually don’t grow mould at all.

On the health claims

The honest position, because this industry sells fear efficiently. The World Health Organization’s review found sufficient epidemiological evidence that people in damp or mouldy buildings face increased respiratory symptoms, respiratory infections and worsened asthma. That is real and well established, and it’s reason enough to fix the problem.

What isn’t established is everything the scarier marketing implies. WHO’s working group concluded that the specific species and agents responsible “cannot be identified” — so a swab telling you which mould you have doesn’t tell you what it will do to you. On “toxic black mould” specifically, the US CDC’s position is that “no test exists that proves an association between Stachybotrys chartarum and particular health symptoms.” And EPA notes that because no exposure limits exist, sampling “cannot be used to check a building’s compliance” with any standard — Singapore has no residential mould limit either. A paid test can tell you a species is present. It cannot tell you that you’ve failed anything.

Red flags, from the fine print

A warranty that excludes leaks and condensation. Two companies here publish their exclusions and both rule out water ingress, poor ventilation, and high moisture readings. Ask for the exclusions in writing before you value the guarantee at anything.
“From $199” that buys one surface. The market’s headline price is real but it’s a line item, not a job. Ask what your actual room costs.
Ozone generators in an occupied home. One company on this list advertises industrial ozone machines while telling occupants they may remain on site. Ozone is a lung irritant and isn’t an accepted remediation method at safe concentrations.
Claims that physics won’t support. One company states its UV-C kills mould “hidden within and behind walls.” UV-C is line-of-sight; it cannot do this.
Certifications with no issuer. ISO 9001, IICRC and “industry certified” appear across these sites with no certificate numbers. Only one company publishes a verifiable Singapore licence number. There is no Singapore mould-remediation licence, so IICRC is the credential worth asking to see.
Dead links and borrowed prices. One company’s website is offline as we publish, and the widely-quoted “from S$168” benchmark traces to a firm whose domain now redirects to an unrelated site.

Questions to ask before you book

Where is the water coming from, and how will you determine that? If the answer doesn’t involve an instrument, you’re buying a cleaning.
What is the total for my actual room — how many “surfaces” is that, and is paint included or extra?
What voids the warranty, in writing? (Ask specifically about condensation and seepage.)
Is the affected material porous — plasterboard, MDF carpentry — and are you cleaning it or replacing it?
Which chemicals will you use, and can I see the safety data sheet?
If you’re quoting a job under a square metre: why shouldn’t I do this myself with detergent and a fan?

How we picked

Eleven companies, compared on their own published price lists, method descriptions, warranty terms and fine print, read in August 2026 — no visits, no sponsors, no affiliate links. Where a company publishes nothing, the table says so rather than guessing. Ranking favoured published prices, moisture diagnosis, verifiable credentials and written warranty terms over kill-rate percentages and unattributed badges. Forum figures are what residents report paying, not market rates.

If the damp in your flat is a humidity problem rather than a leak, the machine you need may be a dehumidifier rather than a purifier — and if the smell arrived with your renovation instead of the weather, that’s formaldehyde, not mould. Half the companies here lose customers at the point where their website hides the price — if your service business has the same problem, that’s fixable.

Frequently asked questions

How much does mould removal cost in Singapore?

Among companies that publish anything: from S$199 for a single ceiling or wall surface, S$430 for a small job including anti-mould paint, and roughly S$1,200 for a whole flat. Most firms publish nothing at all. Singaporeans on local forums report paying S$800 for one ceiling and up to S$4,000 for a five-room flat.

Who pays for mould from a ceiling leak in an HDB flat?

For inter-floor leakage, the upper and lower flat owners are jointly responsible for the floor slab. HDB’s Goodwill Repair Assistance scheme pays 50% of the repair with the two owners contributing 25% each, capped at S$300 per repair location, referred through your estate’s Grassroots Adviser. Roof leaks on the top floor are the Town Council’s responsibility instead.

My neighbour’s aircon is causing mould on my wall. What can I do?

HDB recorded 240 such cases in 2025. It will inspect and advise both households on aircon use and ventilation, but it does not assign liability and there is no cost-sharing scheme for this as there is for floor-slab leaks. Practical fixes are insulating the affected wall — around S$90 for DIY panels, or about S$500 for a contractor-built false wall.

Can I remove mould myself?

For a patch under roughly one square metre on a hard surface, the US EPA says most people can: scrub with detergent and water, dry thoroughly, and wear an N95, goggles and gloves. Call a professional for larger areas, anything involving your aircon system, porous materials that are mouldy through, or if someone in the home has asthma.

Does anti-mould paint fix mould?

Not on its own, and not over live mould. Paint applied over an untreated surface hides the problem while the moisture that caused it continues. It has a role as the final step after the mould is physically removed and the water source is fixed — never as the treatment itself.