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We turn up at maybe two hundred handover days a year across Sydney, Melbourne, and Brisbane. The good ones look the same — clear program, everything sequenced, supervisor on site, client walks through and signs off. The bad ones also look the same. And the things going wrong are almost always the same five.

Here they are, ranked by how often they kill a PC date, and what to do instead.

1. Underestimating how long the clean actually takes

The number one mistake. A PM looks at a 24-unit residential build, googles “how long does a builders clean take”, reads “1 day per apartment”, and books the cleaner for the last day of the program.

The real answer for a quality clean on a 24-unit build is closer to 8–12 working days end-to-end — split across rough, detail, and final stages — with two stages overlapping with other trades. By the time someone realises the sums don’t work, the cleaner can’t reschedule and the PC date slips.

What to do instead: work backwards from PC. Block the final clean to the two days before handover. Block the detail clean to the week before that. Block the rough cleans across the rest of the program. Get the contractor in for a site walk three weeks out and let them tell you the days they need.

2. Not booking caulking with the clean

Caulking and cleaning are two trades that should never be sequenced independently. We see it constantly: cleaner booked for Monday and Tuesday, caulker booked for Wednesday, sparkle clean booked for Thursday. Then the silicone hasn’t cured by Thursday, the cleaner can’t touch the joints, and the client walks in Friday morning to half-finished work.

What to do instead: book both with the same contractor, or book them with two separate contractors who have worked together before. The sequence should be: detail clean, then pre-silicone clean → caulking → 24–48 hour cure, then sparkle clean. If you don’t know how to write that into your program, ask your caulking and builders clean contractor to write it for you.

3. Forgetting site amenities

Site amenities — the sheds, lunchrooms, toilets, and offices used by the trades during the build — almost always get cleaned last, if at all. We’ve walked onto handovers where the apartments are pristine but the loading dock still has trade debris piled against the wall and the lift lobby has paint on the carpet.

From a client’s first impression standpoint, this is a disaster. The client doesn’t enter the apartment first. They enter the building, walk through the lobby, ride the lift, and only then see the unit. If the common areas look like a building site, the unit is fighting an uphill battle to impress them.

What to do instead: book site amenities cleaning as a separate scope across the program — not just at the end. Schedule a deep clean of common areas the day before PC. Walk the route the client will take and clean every metre of it.

4. Late silicone work creeping into clean day

It always happens. A glazier finds a missed joint, a tiler decides a corner needs redoing, a plumber re-seals a shower. The caulker gets called back on the same day the sparkle clean is running. Wet silicone, fresh cleaning chemicals, and a tight schedule — pick any two.

The outcome is predictable: smeared silicone on freshly cleaned glass, marks on grout, and a handover that looks like nobody was in charge.

What to do instead: draw a hard line. No silicone work in the final 48 hours before PC. If a defect is found, log it, address it after handover under the standard defects program, and let the client move in on time. A client who finds one silicone issue on the defect list is a happy client. A client who walks in to a wet, smeared apartment is a complaint waiting to happen.

5. No documentation on handover

The clean is done, everything looks great, the supervisor takes a quick walk and shakes the cleaner’s hand. A week later, the client raises five “issues” that were definitely fine at handover, and nobody can prove it.

What to do instead: insist on a documented QA process. Your cleaner should provide:

This is standard on every job we run. If your current contractor can’t produce this paperwork from their last three jobs, that’s a sign.

The pattern under all five

Notice that none of these are about cleaning quality. They’re about sequencing, coordination, and documentation. The contractors who get these right aren’t necessarily the ones with the fanciest equipment — they’re the ones who treat the clean as part of the program, not an afterthought.

If you’re planning a handover in the next quarter and you don’t want to be writing one of these mistakes into a post-mortem, give us a call. We’ll walk your program with you and tell you what to lock in and when.