What Is a Builders Clean? The Three Stages Explained

A builders clean is the specialist clean carried out after construction or renovation work, done in three stages: a rough clean to clear debris, a detailed clean to remove fine dust and site residue, and a final sparkle clean before handover. It exists because building dust behaves nothing like household dust, and a normal clean just moves it from one surface to another.

If you've just had a kitchen, a loft or a full refurb done, you already know the feeling. The work looks finished, then you run a finger along a door frame and it comes back grey.

What a builders clean actually is

Also called a post builders clean, after builders cleaning, or post construction cleaning, it's the process of taking a space from "the tools are gone" to "you can move in".

The job is different from a deep clean in three ways. The mess is heavier, so it needs scrapers, blades and industrial vacuums rather than cloths and a hoover. The dust is finer, so it settles again for days after the first pass and has to be worked top down. And the surfaces are new, so getting plaster off a shower screen or adhesive off a worktop without scratching it is the actual skill.

Builders will usually sweep up and take their waste away. That is not a builders clean. That's tidying.

Stage one: the rough clean

The first stage happens once the heavy work is done and the tools are out.

This is the muscle stage. Leftover offcuts, packaging, protective sheeting, masking tape and floor protection all come out. Lumps of dried plaster, cement and grout get scraped off floors, sills and radiators. Stickers and labels come off glass and appliances. Then the whole space gets a first industrial vacuum, ceilings and walls downwards.

At the end of a rough clean the room still isn't clean. It's clear, which is a different thing. You can now see every surface you need to work on.

Stage two: the detailed clean

This is the stage that takes the time, and the one people underestimate.

Every surface gets worked individually. Window frames and tracks, where dust and grout haze collect in the runners. Skirting boards and the tops of doors. Inside kitchen units and drawers, because dust gets in even with the doors shut. Light fittings, sockets, switch plates, radiator fins and the backs of radiators. Extractor grilles. Tile grout, which holds a fine haze that looks like a bad job until it's polished off.

Fine dust also gets into soft furnishings if the property was lived in during the work. Sofas, curtains and carpets hold it, which is why a lot of refurb jobs end up needing carpet cleaning specialists in London as part of the same visit rather than a separate booking later.

Glass gets its own pass. Paint splashes and plaster spots come off with a blade before anything else touches them, then the frames, then the panes. Doing it in the wrong order just smears the mess across the glass.

Stage three: the sparkle clean

The last stage happens as close to handover as possible, ideally the day before someone walks in.

By then the fine dust that was still airborne during stage two has settled, so it needs picking up again. Glass and mirrors are polished, chrome and stainless steel are buffed, floors are done last and worked backwards out of the property. Bathrooms and kitchens get sanitised.

It's presentation work. This is the stage that decides whether a client walks in and says "this looks finished" or starts running their finger along shelves.

Why construction dust is not ordinary dust

There's a health reason this job is treated seriously, and it isn't marketing.

The Health and Safety Executive is blunt about it. Regularly breathing construction dust "can cause diseases like lung cancer, asthma, Chronic Obstructive Pulmonary Disease (COPD) and silicosis", and HSE states that "over 500 construction workers are believed to die from exposure to silica dust every year".

Silica dust comes off concrete, brick, mortar, stone and some tiles, so any job involving cutting, chasing or grinding leaves it behind. A domestic vacuum with a paper bag pushes the finest particles straight back into the room through the exhaust. That's why the work gets done with filtered industrial vacuums and why we damp-wipe rather than dry-dust.

It's also why a builders clean is worth doing before anyone moves furniture and children back in, not after.

A builders clean checklist

The order matters as much as the list. Always top to bottom, dry work before wet, floors last.

• Ceilings and high level: coving, light fittings, extractor grilles, tops of wardrobes and door frames
• Walls: paint splashes, adhesive residue, filler dust, switch plates and sockets
• Windows: frames, tracks, hinges, glass inside and out, stickers and labels removed
• Joinery: doors, both faces plus the top edge, architraves, skirting boards, stair spindles
• Kitchen: inside and outside every unit, worktops, splashbacks, sink and taps, appliance interiors and the gaps beside them
• Bathroom: grout haze, silicone, screens, sanitary ware, chrome, extractor
• Radiators: front, fins and the wall behind
• Floors: vacuumed, then washed with the right product for the material, sealed stone and new timber both need care
• Outside: the bit everyone forgets, the front path, the doorstep and the bin area where the skip stood

If the work touched the outside of the building, render splashes and cement dust on paving usually need a separate pass. We cover that under pressure and jet washing rather than as part of the interior clean.

Who books a builders clean, and when

Two very different customers, same job.

Homeowners book it after a kitchen, extension, loft or full refurb, usually because they're living in the dust and have had enough. They tend to want the detailed and sparkle stages together, plus soft furnishings.

Builders, developers and refurbishment firms book it as the last line on the programme. For them it's about handover: the client's first impression is the clean, not the plastering. We work with trade clients through our cleaning for builders and refurbishment firms service, and the useful thing is being able to phase it across first fix and handover instead of one visit at the end.

Timing tip that saves money either way. Book it once the dust-making trades are finished. If a decorator is still coming back, you'll pay for the same clean twice.

What changes the price

Nobody can price this properly over the phone without knowing the state of it. What moves the number:

• Size of the property and the number of glass panes, which is usually the real driver
• How much of the three-stage process you need, or whether the site is already clear
• Whether there's heavy residue: dried cement, grout haze, paint on glass, adhesive on floors
• Access, parking, ULEZ, and whether there's a lift if it's a flat
• Whether soft furnishings, carpets or exterior areas are included

Published UK cost guides put a builders clean for a typical London property somewhere in the £250 to £600 range, with larger or heavier jobs above that. We quote per job after seeing photos or the property itself, so you get a real number rather than a range. There's more detail in our guide to after builders cleaning costs in London.

FAQ

How long does a builders clean take?
A single room after a small job might be half a day. A three-bed house after a full refurb is usually two cleaners for one to two days, more if all three stages are needed.

Is a builders clean the same as a deep clean?
No. A one-off deep cleaning service resets a lived-in home. A builders clean removes construction residue from a finished site. Different products, different tools, different order of work.

Do I need all three stages?
Not always. If your builder has cleared the site properly you may only need the detailed and sparkle stages. If the property is still full of offcuts and sheeting, you need the rough clean first.

Can you do it while trades are still on site?
We can, and for larger projects we often do it in phases. Just be aware that anything done before the dusty trades finish will need redoing.

Do you clean the windows as part of it?
Yes, interior glass is always included and exterior glass is included where it's safely reachable. Anything at height goes through our professional window cleaners with the right access equipment.

Which areas do you cover?
North London and the Hertfordshire borders, from Borehamwood and Barnet out to Watford and St Albans. Full list on our areas we cover page.

Booking one

We do builders cleans for homeowners and for trade clients across North London and Herts, fully insured with £5 million public liability cover and DBS-checked teams, across 500+ completed jobs.

Send us photos and the property size and we'll come back with a real price. Get a builders clean quote, call 07375 104665, or message us on WhatsApp at wa.me/447375104665.