How to Split Rent Between Housemates Fairly

Splitting rent evenly is the default in most share houses, and it is the right answer surprisingly often. It stops being the right answer the moment the rooms are obviously different, and that is when the resentment starts.

Here are the four methods people actually use, and how to pick one that survives twelve months of living together.

1. Even split

Total rent divided by number of people. Simple, transparent, and nobody has to negotiate.

Use it when the bedrooms are genuinely comparable in size, light and storage, and nobody has a private bathroom.

Avoid it when one room is half the size of the others. An even split in that house means the person in the box room is subsidising everyone else, and they will work that out eventually.

2. Split by room size

Measure each bedroom in square metres, add them up, and charge each person their share of the total.

If the bedrooms are 16, 12 and 8 square metres, that is 36 total. On $900 a week, the shares work out at $400, $300 and $200.

Use it when room sizes vary noticeably. It is objective, easy to verify with a tape measure, and hard to argue with.

Watch out for the fact that square metres are not the whole story. A large room facing a brick wall on a main road is not better than a smaller, quiet room with morning light.

3. Size plus features

Start with the room size split, then apply adjustments everyone agrees on up front. Common ones:

• Private ensuite: add 10 to 15 per cent
• Built in wardrobe where others have none: add 5 per cent
• No window or a very small one: subtract 10 per cent
• Street noise, or the room next to the bathroom: subtract 5 per cent
• Balcony access: add 5 per cent

This gets closest to what a room is genuinely worth, but only if you agree the adjustments before anyone moves in. Renegotiating them later never goes well.

4. Sealed bids

Everyone privately writes down the maximum they would pay for each room. Highest bidder gets each room, and the difference between total bids and actual rent is split evenly as a discount.

Use it when people have genuinely different priorities, which is more common than you think. Someone who works from home values the big quiet room far more than someone who is out six days a week.

It sounds elaborate, but for a house of strangers moving in together it removes the awkwardness completely. Nobody has to argue that they deserve the good room.

The situations that cause arguments

Couples sharing a room

A couple in one room uses more of everything: hot water, power, kitchen, bathroom time, and the shared living space. Charging them one room’s rent is rarely what the rest of the house means by fair.

The usual settlement is somewhere between one and a half and two shares. Many houses land on the room rate plus a fixed per person amount for bills. What matters is that it is agreed in advance and written down, not raised three months in as a complaint.

Someone moves out mid lease

Decide now, before it happens, who covers the empty room while you find a replacement. The two workable answers are that the house splits the gap evenly, or the person leaving covers it until a replacement moves in. Both are defensible. Not deciding is what causes the fight.

Rent goes up at renewal

If you split by room size, a rent increase applies proportionally and nothing needs renegotiating. If you agreed flat amounts, you need to reopen the whole conversation every time the rent moves, which is a good argument for using a percentage based method from the start.

Write it down

Whatever you land on, record it somewhere all of you can see: each person’s amount, their due day, and what happens when someone leaves. A shared note is better than nothing, but it does not track who has actually paid.

That is the real problem. Most share houses do not argue about the method, they argue about whether Jordan paid last month. In Mates on Rent every housemate has their own rent amount and due day, marks their rent as paid, and the owner confirms it. Everyone sees the same record, so the question of who paid has one answer instead of three.

A quick sanity check

Before you sign anything, run the split past this test: if you swapped rooms with the person paying the most, would you feel you were getting a fair deal? If everyone in the house can answer yes, the split will hold. If anyone hesitates, fix it now rather than in month four.