The lease is signed, the bags are in your room, and somewhere down the hallway are two or three people you've met for a total of eleven minutes. The first week of a flatshare sets its tone for months — and it's easier to get right than most people think. Here's the playbook.
Day 1: The Kettle Move
Unpack later. Your first job is fifteen unhurried minutes in the kitchen — the pop-the-kettle-on introduction. You don't need charisma; you need three questions: how long have you lived here, what's good around here, and is there anything about the flat I should know before I break it. That last one gets you the real handover: the shower's temperament, the bin schedule, which cupboard is whose.
Day 2–3: Learn the Invisible Rules
Every flatshare runs on unwritten rules, and new arrivals break them innocently. Watch before you assume: When does the flat go quiet? Does everyone cook separately or drift into shared dinners? Is the living room social space or someone's WFH office from nine to six? You'll learn more from two evenings of observation than from any house-rules document — though if one exists, read it twice.
Day 3–4: Sort the Money Before It's Weird
If bills aren't included in your rent, week one is when the split gets decided — not month two, when someone's already fronted £180 of electricity. Ask directly: whose name is on what, how do we settle, what date. It's a five-minute conversation now and a resentment engine later. The systems that work are in our bill-splitting guide. (In an all-inclusive setup this whole section is a non-event — one of the quiet reasons people choose it.)
Day 5–6: Make One Small Contribution
Not a grand gesture — a visible one. Replace the washing-up liquid before it runs out. Take the bins on your own initiative. Buy biscuits and leave them on the counter with a "help yourselves" note. Flatshare trust is built from £3 gestures, and being the person who noticed something needed doing is the fastest reputation you can earn.
Day 7: Suggest the Low-Stakes Plan
Not a dinner party — too much pressure. The winning first invitation is small and escapable: "I'm walking to the market Saturday morning if anyone fancies it" or "I'm ordering from the curry place, want in?" People can say yes without committing their evening, and one shared takeaway does more than a week of hallway pleasantries.
If It's Awkward Anyway
Some flats are just quiet, and that's fine — a peaceful home with polite strangers is a perfectly good outcome. Give it three weeks before judging. And if you realise the household genuinely isn't a fit, remember what kind of contract you're on: in a co-living setup with individual contracts, moving rooms is an email, not a legal negotiation (how that works).
Starting from scratch in London and want flatmates who also just arrived? Nook flats are full of people in exactly your week one — kettle's probably already on.
