The short version
Post-construction cleaning happens in three passes, not one. Clean in the wrong order and you'll redo work — drywall dust stays airborne for hours and settles back onto surfaces you already wiped. Vacuum before you wipe, work top to bottom, and save glass and floors for last.
Drywall dust is not regular dust. It's alkaline, it's fine enough to hang in the air for hours, and it will coat every surface in the building, including inside closed cabinets. It's also mildly corrosive to some finishes and abrasive enough to scratch glass if you wipe it dry.
That's why post-construction cleaning isn't "a deep clean." It's a different job with a different sequence. Below is the process we use on new builds and remodels across Los Angeles — the same one that gets properties through final walkthrough without a punch-list callback.
This happens as soon as the trades are done, before the punch list. The goal isn't spotlessness — it's removing bulk so the detailed work is even possible.
Don't skip this phase to save money. A final clean attempted on top of a rough-clean-sized mess takes twice as long and never gets fully clean.
This is the detailed pass, and it should happen after the punch list is closed. If trades are coming back to touch up paint or fix trim, wait. Otherwise you'll be cleaning around them and then cleaning again.
Order matters more than effort in this phase. Follow this sequence:
Ceilings and high surfaces — HEPA vacuum
Ceiling corners, crown molding, light fixtures, recessed cans, ceiling fans, speaker grilles, smoke detectors, vent covers, and the tops of tall cabinets.
Walls, trim, doors, and ledges
Damp microfiber in one direction, rinsing and replacing cloths often. Include door tops, door frames, window casings, and the tops of baseboards.
Interiors — cabinets, drawers, closets, appliances
Vacuum first, then wipe. Shelf by shelf. Includes the inside of closet rods, drawer slides, and appliance cavities.
Hardware and detail work
Outlet and switch plate covers, hinges, handles, faucets, and fixtures polished. Dust collects inside every outlet slot.
Glass and mirrors — last of the wet work
Windows, glass doors, mirrors, shower glass. Use a plastic scraper for paint overspray and stickers. Never a metal blade on glass.
Floors, then a final air check
HEPA vacuum, then mop. Run the HVAC briefly, then re-check high surfaces — dust that was in the system will settle again.
These are the ones that get flagged in a walkthrough. Each is a two-minute item, and each is the difference between "clean" and "not clean enough."
HVAC returns
Both supply and return grilles. Dust sitting in the return will redistribute the moment the system runs.
Speaker grilles
Ceiling and in-wall speakers act like dust filters. Vacuum the mesh rather than wiping it.
Top of door frames
A flat ledge above eye level on every single door. Almost universally missed.
Outlet slots
Plate covers wiped, but vacuum the slots too — sanding dust packs into them.
Drawer slides & hinges
Dust in a hinge eventually works into the finish and shows up as streaks.
Baseboard-to-floor gap
The seam where baseboard meets floor traps dust that a mop slides right over.
On a permitted build in Los Angeles, the final inspection is about the work — but a construction-dirty property creates the impression of unfinished work. The things that most often read as "not done":
Even a perfect final clean gets a little dirty during the owner walkthrough, staging, or the first appliance delivery. A short touch-up pass — floors, glass, bathrooms, entry — costs a fraction of a full clean and makes the handover feel finished.
If you're a contractor scheduling this for a client, book the touch-up for the morning of handover. It's the cheapest insurance against a callback.
We run all three phases and coordinate the timing around your punch list. Flat-rate quotes, fully insured, and we'll tell you honestly how long it will take.