How to choose an office cleaning contractor for your premises

You've just moved into a new office or noticed that your current cleaning arrangement isn't cutting it. The building looks fine most days, but you know the quality and consistency matter—a clean workplace affects how clients perceive you, how staff feel, and even dust on high shelves can build up faster than anyone notices. Now you're looking for a contractor who'll actually turn up, do the work properly, and fit your schedule and budget. The question is: how do you separate the serious contenders from those who'll disappear after a few weeks?

The real choice comes down to a few practical factors that directly affect whether you'll be satisfied six months in. Skip the generic vetting checklist and focus on what actually makes a difference for your specific premises.

Matching their experience to your office type

Not all offices are alike, and contractors vary in what they handle well. A contractor experienced with small professional suites (accounting firms, solicitors, design studios) may have very different strengths from one used to large corporate floors or mixed-use buildings with retail downstairs. Ask where they've worked before—not to be snobbish, but because experience teaches them the rhythms of similar spaces. If you're in a medical suite, they should know how to handle infection control basics. If you're in a creative agency with open-plan desks, they need to understand the rhythm of not getting in people's way during early starts. A contractor who's worked in your building already is a bonus; they'll know the lifts, the access points, any quirks with the water pressure or where the bins actually go. This isn't glamorous, but it saves you from having to explain the obvious every time.

The scheduling fit—really understand it

When they say they can clean your office, push on the detail. Do they come before hours, after hours, or during lunch? How often, and what days? Can they adjust if your team comes in early one week? Will they text you a photo if something needs addressing, or do you only hear from them when there's a problem? The contract should name the exact times and frequency, but the conversation before that tells you how flexible and responsive they actually are. A contractor who's vague about timing or treats schedule changes as an drama waiting to happen will frustrate you. One who asks good questions about your workflow—when the office is empty, whether you have client meetings early—is thinking about how to work around you, not just fit you into their route.

What they'll actually clean—and what costs extra

This is where vagueness costs you. Does their standard weekly clean cover the kitchen, or is that separate? Do they touch the fridge inside, the microwave, the coffee machine? What about windows—internal or external or neither? Carpet cleaning, trash bins (do they replace liners?), vacuuming under desks or just corridors? Bathrooms: do they restock toilet paper and soap, or just clean? Some contractors include these things; others charge per task. You need to know exactly what you're paying for, and more importantly, what you'll expect them to do every visit so there's no argument later. Don't assume. Ask them to walk through your space (even via photos if remote) and tell you what their standard package covers in your building. If they spot something—a galley kitchen, carpeted breakout area, lots of glass—do they automatically flag that as an add-on or think it's included? That tells you whether they're detail-oriented or lazy about scope.

Track record in your market

You're looking for someone who's been doing this long enough to have a real reputation locally. Ask for references from other offices they clean, preferably in your area or similar buildings. A quick call or message to someone who's actually been using them for a year or more is worth far more than a testimonial on their website. Ask those references: do they always show up? If someone's sick, does a replacement come or is the clean skipped? Has the quality stayed consistent, or has it dipped? Do they respond quickly if you spot an issue? A contractor with solid local references and a few years' track record in office cleaning isn't flashy, but they're far less likely to vanish or drop your building from their schedule when a bigger client comes along.