Living with someone concentrates every small habit into a shared space, and resentment compounds fast when nothing gets said. The classic failure mode is silence-then-explosion: you stew over the dishes for six weeks, say nothing, then detonate over one mug. The fix is boring and effective — raise things early, small, and directly, before they fossilise into a grudge.
Raise it early, while it's still small
The best time to mention the noise or the bins is the first or second time it bothers you, when you can still say it lightly. Wait until you're furious and it comes out as an attack. Little and often beats rare and explosive.
Propose a system, not a character assessment
Most flatshare conflict is fixed by a mechanism: a cleaning rota, a bills app, a quiet-hours agreement, a guests heads-up rule. Systems depersonalise it — it's you two versus the problem, not you versus them.
Bin the passive-aggressive notes
Sticky notes on the fridge, pointed group-chat messages, loudly doing their washing up — it all escalates and nothing gets resolved. If it's worth a note, it's worth a two-minute face-to-face conversation.
Own your half honestly
You are also somebody's annoying flatmate in some way you can't see. Going in with a bit of humility — “I know I'm not perfect on the noise either” — makes the other person far more willing to meet you. It's not a war to win; it's a shared home to run.
Get the big stuff in writing
- Money especially: who pays what, by when, and how you split shared costs. Vagueness here breeds real resentment.
- A quick shared doc or agreement at move-in prevents most of the classic fights.
- If a housemate repeatedly won't hold up basic agreements, that's information for when the lease renews.
Checklist
See also setting personal boundaries and giving feedback without starting a fight.