How can rent reflect room size and amenities?
Roommate 1 pays
$1,605.00
Tip. Put the formula in the roommate agreement once and stop renegotiating every month.
Explore the numbers
Start with a scenario, then read the response curve to see which input actually moves the answer.
Example 1
Different room sizes with an ensuite premium on the largest.
Roommate 1 pays
$1,605.00
Example 2
Set the third roommate to zero and the split runs across two rooms.
Roommate 1 pays
$1,500.00
Example 3
Similar room sizes where the amenities do most of the differentiating.
Roommate 1 pays
$1,201.60
Sweeps total rent from half to one and a half times your value, holding everything else fixed.
Response curve
Roommate 1 pays
$1,605.00
Splits rent by room size after peeling off amenity premiums for things like parking, an ensuite, or a private balcony, so the split reflects what each person actually gets.
Base = rent − total amenity premiums; each person pays base × their square footage share + their own premium
Set the third roommate's square footage and amenity premium to zero and they drop out of the split.
Ask what each person would pay to have it rather than not. A private bathroom often lands between $75 and $200 a month depending on the market. The number only has to feel fair to the people paying it.
It is the most objective input available, which is why it works as a default. Natural light, noise, and closet space matter too, and the amenity premium is where you account for them.
No. They are educational estimates based on the inputs and assumptions on this page. Confirm important decisions with a qualified professional and your own documents.
The questions people usually ask next.