
Somewhere within earshot of you right now, a wall is coming down. You can tell without being told: the low grind of a hacking machine, the whine of a tile cutter, a lorry idling downstairs at half past eight in the morning. Renovation is the sound of a block being looked after, which is a genuinely comforting thought for roughly the first three days.
Then you run a finger along the TV console and it comes away grey. That is the part nobody warns you about. Your neighbour is renovating, and your flat is the one quietly collecting the evidence.
Renovation dust is not the soft, woolly stuff that gathers under the bed. It is pulverised concrete, screed and tile — fine, gritty, faintly abrasive, and light enough to stay airborne for hours after the drilling stops. In a block of flats it moves the way air moves: along the common corridor, through the gap under your front door, in past the window you left ajar for the breeze, and up and down the service riser.
Which is why the unit two floors above a renovation sometimes ends up dustier than the one directly beside it. Our air is warm and moving almost all the time, and warm moving air carries fine particles a long way before it puts them down.

Sealing yourself in for six weeks is neither pleasant nor necessary. A few targeted moves do most of the work, and they cost nothing.
The biggest single opening in most flats is the gap under the main door, and a rolled bath towel closes it in about four seconds. Keep the windows on the side facing the works shut during working hours and open the ones on the opposite side instead, so air still moves through the flat without bringing grit along with it. If your kitchen or bathroom has an exhaust fan, leaving it running gives the place a gentle outward pressure — it helps rather more than it sounds like it should.
The instinct is to grab a dry cloth or a feather duster and sweep the film off the sideboard. Resist it. Dry-wiping concrete dust does two things you do not want: it lifts most of the particles straight back into the air to land somewhere else an hour later, and it drags the gritty ones across your surfaces, which is how a glossy table top picks up a haze of fine scratches over a few weeks.
Use a barely damp microfibre cloth instead, fold it into quarters, and turn to a clean face often. Rinse it in a bucket rather than the sink. On floors, vacuum before you mop — pushing wet grit around with a mop is the quickest way to dull a finish you were rather fond of.
Hard surfaces show you the problem, so you deal with them. The trouble is that fabric hides it completely. Sofas, mattresses, curtains, rugs and cushions take fine dust in and hold on to it, and in our humidity it settles down into the fibres rather than shaking loose when you plump a cushion.
If the works next door are going to run for a while, it is worth throwing an old sheet over the sofa on the noisiest days and taking cushion covers off to wash more often than you normally would. Anything you cannot cover — the rug, the mattress, the curtains — is simply storing it all up until the job is finished.

There is a deeply satisfying morning when the corridor goes quiet and the skip disappears. Give it a few days before declaring victory, though, because the last of the airborne dust takes a while to come down and cleaning too early mostly means doing it twice.
Then do a proper reset rather than another round of wiping. Aircon units are the usual surprise — filters and coils catch a great deal of this, and a clogged filter makes the whole system work harder, so Aircon Servicing is often the sensible first call. Fine grit works its way into grout lines and into the pores of tile and stone, which is where Floor Deep Cleaning earns its keep. The fabric you have spent weeks worrying about is exactly what Sofa & Mattress Cleaning is for, rugs included. And if it has been a long job and you would rather hand the whole flat over at once, a Nimbus Homes Deep Cleaning takes the lot in one go.
Someone else's renovation is a temporary state of affairs, even on the mornings when it does not feel like one. Protect the soft things, wipe damp, be patient — and when the last lorry finally pulls away, you can book a clean with Nimbus Homes and let somebody else deal with the fallout.