Do not split the rent evenly, and do not split it by square feet alone. Take what a private bathroom is worth off the top and give it to the room that has one. Divide half of what is left evenly, because everybody uses the kitchen and the living room the same, and divide the other half by each bedroom's square feet. Round every room to the nearest $5 and check that the rooms still add up to the house. In a five-bedroom house that has to bring in $3,400 a month, that turns an even $680 a room into $590 for the smallest bedroom and $875 for the suite with its own bathroom.
Key takeaways
- An even split overprices the small room and gives the big one away: at $680 each, the 110 square foot bedroom costs the same as the 200 square foot suite.
- Square feet alone goes too far the other way, because it prices the kitchen and the living room as if only the big rooms used them.
- A private bathroom is priced in dollars, not square feet. Take it off the top before you divide anything.
- You choose two numbers yourself: how much of the rent is for the shared house (half is a good start) and what a private bathroom is worth where you are.
- Round last, and make the rooms add up to the house exactly. A price list that comes out $10 short is $120 a year.
Why an even split and a square-foot split are both wrong
Take a five-bedroom house that has to bring in $3,400 a month. Four bedrooms measure 110, 120, 130 and 150 square feet and share bathrooms. The fifth is a 200 square foot primary suite with a bathroom of its own.
An even split is $680 a room. The person touring the 110 square foot bedroom is asked to pay what the person in the suite pays, for a little over half the floor and a shared bathroom. The small room sits empty. The suite rents the first day, which feels like good news and is really the sign it was underpriced.
The usual fix is to split by square feet. On this house that comes to about $527, $575, $623, $718 and $958. Now the small room is a bargain and the suite is the one that sits. The reason is that nobody rents only a bedroom. They rent a bedroom plus an equal run of the kitchen, the living room, the laundry and the driveway, and the person in the smallest room cooks as many dinners as the person in the largest. Pricing by bedroom size alone bills the big rooms for space everybody shares.
The fair answer sits between the two, and it takes four steps on the back of an envelope.
- Even split: the small room is overpriced, the big one given away
- Square feet alone: the big rooms pay for the shared house
- Part even, part by size: what a resident is actually renting
The four steps, worked on one house
Step one: settle what the whole house has to bring in. That is its own question, answered by what rooms near you rent for and what the house costs you to run, and the guide linked below covers it. Here it is $3,400.
Step two: take the private bathroom off the top. In this example a bathroom of your own is worth $75 a month. $3,400 less $75 leaves $3,325 to divide between the five rooms.
Step three: cut that in half. $1,662.50 is for the shared house and is divided evenly, $332.50 a room. The other $1,662.50 is for the bedrooms and is divided by size. The five bedrooms come to 710 square feet, so each square foot carries about $2.34. The 110 square foot room picks up $257.57 for its size and the suite picks up $468.31.
Step four: add each room's two pieces, give the suite its $75 back, and round. Before rounding the rooms are $590.07, $613.49, $636.90, $683.73 and $875.81. Round each one down to a $5 step and the list adds up to $3,390, which is $10 short. Hand the missing $5 steps, one each, to the two rooms that lost the most to rounding (Bedroom 4 and Bedroom 2). The finished list is $590, $615, $635, $685 and $875. Add it up and you get $3,400.
- Bathroom dollars come off first and go to the room that has one
- Half of the rest is split evenly, for the house everybody shares
- The other half is split by each bedroom's square feet
- Round down, then give the leftover steps to the rooms that lost most
The two numbers you have to choose
The method has two settings, and both are judgment. The first is how much of the rent is for the shared house. Half is a sensible start. Move it toward 70% when the common space is what sells the house: a big kitchen, two living rooms, a yard, a garage everybody uses. At 70% this house comes out $620, $635, $650, $675 and $820, and the rooms draw closer together. Move it toward 30% when the bedrooms are most of what there is. At 30% it is $560, $595, $625, $690 and $930, and size counts for more.
The second is what a private bathroom is worth. Do not guess, and do not borrow the $75 from this example. Look at the rooms listed near you this week and compare the ones with their own bathroom against the ones that share. That gap is your number. If there are too few listings to tell, price the suite, show it for two weeks, and let the showings correct you.
Write both numbers down beside the price list. When a resident asks why the room next door is $50 cheaper, "the house is split half evenly and half by size, and yours is 20 square feet bigger" is an answer. "That is just the price" is the start of an argument.
- Big common areas: move toward 70% shared
- Bedrooms are most of the house: move toward 30%
- Bathroom: the gap between private and shared bathroom rooms listed near you
What square feet cannot see
Square feet is the fairest single measure because a resident can check it with a tape. Measure every bedroom the same way: wall to wall inside the room, and either count the closet for all of them or for none.
It still misses what a person notices on a tour. A window onto the street. A room over the garage that runs hot. The bedroom beside the front door that hears everyone come home. Handle those after the arithmetic, not inside it: move a room $10 or $25, and give or take the same amount on another room so the house still adds up. Keep the adjustments few and write one word of reason next to each.
Then check the top and the bottom of the list against real listings. If the suite comes out at $875 and rooms with their own bathroom near you rent for less, no split will rescue it. The total is too high for this house, or the house is worth more rented whole. The split divides a rent. It cannot tell you the rent is right.
One rule sits above all of it: the price belongs to the room, never to the person. Whoever applies for Bedroom 2 is quoted Bedroom 2's rent. That is simpler to run, and it is what fair housing law expects of you.
- Measure every bedroom the same way
- Adjust after the arithmetic, $10 or $25 at a time
- What one room gains, another gives up
- Same room, same price, for every applicant
When people already live in the rooms
New numbers are for new leases. A resident who signed at one rent pays that rent until the lease ends, whatever your new sheet says. Move a room to its new price when it next turns over, or at renewal with the notice your lease and your state require.
Expect residents to compare. In a house rented by the bedroom, everybody knows what everybody pays within a month. That is a reason to use a method you can show, not a reason to hide the list. A list where the bigger room always costs more survives the kitchen conversation. A list with one odd price in it, usually the room you discounted in a slow month, does not. Fix the odd one the next time that room turns.
Run the split again when the house changes: the total goes up, a bedroom gains its own bathroom, a den becomes a sixth bedroom. It takes a minute, and every room moves together instead of one resident getting a raise because their lease happened to come up first.
- A signed lease keeps its rent until it ends
- Change a room's price at turnover or renewal
- Clear one-off discounts the next time that room turns
- Split again whenever the total or the house changes
Keep each room's price in one place
A price list kept in a notebook drifts. The listing says one figure, the lease says another, and the reminder you send on the 1st says a third. Whatever you run the house with, each bedroom needs its own rent, written down once, with its own lease and its own balance behind it.
RentCaddie is built around the room. Each bedroom carries its own asking rent, each resident has their own lease and their own balance, and a house is the sum of its rooms rather than one rent you divide by hand. The calculator above is free and needs no account. Work out your own house on it first.
Common questions
Should rent be split by square footage?
Partly. Square feet is the fairest way to divide the part of the rent that pays for the bedrooms, but every resident uses the kitchen, living room and laundry equally, so part of the rent should be split evenly. Half and half is a sensible starting point.
How much more should a room with a private bathroom cost?
There is no number that holds everywhere. Compare rooms listed near you that have their own bathroom with rooms that share one, and use that gap. Take it off the house's rent first and give it to the room that has the bathroom, then divide the rest.
Do I count the closet when I measure a bedroom?
Either way works as long as every bedroom in the house is measured the same way. Measure wall to wall inside the room and decide once whether closets are in or out.
What if the rooms do not add up to the house's rent after rounding?
Round every room down to your step, $5 or $25, and count how many steps short the list is. Hand those steps out one at a time to the rooms that lost the most to rounding. The rooms then add up exactly and none is more than one step from its unrounded figure.
Can I change the rent on a room somebody already lives in?
Not in the middle of a lease. A signed lease keeps its rent until it ends. Change the price at renewal, with the notice your lease and your state require, or when the room next turns over. Notice rules differ by state and city, so check yours before you send anything.
Rental language, explained
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Written to help independent landlords make an operational decision. Legal and tax topics are educational, not professional advice. Comparison claims use public vendor information; we do not invent hands-on testing.