A Section 16 bungalow passed its inspection. The report said so, then pointed at three rooms and one wall under the stairs.

SECTION 16, Petaling Jaya. Not every inspection in this library ends with a house in trouble. On Friday, 4 September 2026, a Cleanaholics inspector spent the day in a bungalow of about 2,800 square feet belonging to a family we will call the Menons, and the first sentence of the report he wrote was this: overall, a home in good condition.

It is worth reading what an inspector says when the news is mostly good, because it shows what the instruments are for when there is no crisis to find.

The air, room by room

Six rooms were measured with the doors closed. Carbon dioxide ran from 787 to 989 parts per million, within the range generally considered adequately ventilated, highest in the maid's room, where a little more fresh air would help. Fine dust read 18 to 23 and coarse dust 20 to 25 micrograms per cubic metre, a moderate level that regular filter servicing and ventilation keep in check. Formaldehyde and volatile compounds were low in most rooms.

Two things were worth a note. Relative humidity sat between 64 and 70 per cent across the house, a little above the 50 to 60 that discourages mould, and the single most useful thing the family could change. And three readings stood out on the formaldehyde sensor: the kitchen at cabinet level, the first-floor walk-in wardrobe, and the master toilet, which read 0.972 milligrams per cubic metre on the indicative meter, far above the other rooms. The report treated these as what they most commonly are, off-gassing from joinery, furnishings and cleaning products in enclosed spaces, recommended ventilation as the first step, and offered a laboratory measurement for anyone who wanted certainty rather than an indication.

The wall under the stairs

The house was dry throughout, with one exception. In the children's play area, on the wall below the staircase, the moisture meter read 999, the top of its scale. The inspector took the reading four times at that point; every one came back 999, and a fifth nearby read 499. The surface around it carried the staining that microbial or organic matter leaves. Somewhere behind or beneath that staircase, water was either arriving or trapped.

Until the source is stopped, surface treatment alone is unlikely to hold.From the report, 4 September 2026

The recommendation for that wall was not a treatment but an investigation: find the leak or the trapped moisture, stop it, and only then dry and treat the surface. It was placed first in the report's list of priorities, ahead of any remediation, because everything else depends on it.

Three rooms, and no more than three

Three rooms on the ground floor, the guest room, the maid's room next to the store, and the powder room, carried a musty odour with signs consistent with hidden mould behind or within the finishes. The report recommended professional remediation of those three rooms. Then it did something that matters: it said, in plain words, that the rest of the home did not require treatment, that no coating was recommended elsewhere, and that Cleanaholics provides remediation services, which it disclosed for transparency.

Six suggestions, in order

Trace and stop the moisture below the staircase. Remediate the three ground-floor rooms. Bring humidity to 50 to 60 per cent with air-conditioning or a dehumidifier in the more humid rooms and good cross-ventilation. Improve fresh-air flow in the maid's room. Keep dust down with filter servicing and regular attention to soft furnishings. Ventilate the kitchen, the wardrobe and the master toilet for formaldehyde, and confirm by laboratory measurement if the family wanted certainty. Nothing on the list was expensive. Nothing on it was optional either.

What it means for a home that is basically fine

Most homes are not in crisis, and an inspection of one should say so. What the instruments add to a good house is precision: the one wall out of hundreds that is wet, the three rooms out of fifteen that smell, the one reading on the formaldehyde sensor that deserves a window opened. A report that treats the whole house because part of it has a problem is easy to write. One that draws the line where the evidence draws it is the one worth paying for.

Reported from the Cleanaholics inspection of 4 September 2026. The family's name has been changed and the street withheld. Readings are indicative and from a single visit; no organism is named, and nothing here is a medical statement about any person.