# Two Bathtubs Are Not Half Full, and Other Real Estate Bathroom Math You Need to Know

Last weekend we talked about the dimensions of home bathrooms – like what you get with a half bath versus a 3/4 or full bath. And while this information is necessary to decipher that terminology in property listings, there’s one more piece that isn’t exactly straightforward either: the total number of bathrooms in a home.

Even though we use fractions as a shorthand for describing the number of plumbing fixtures in a bathroom, you can’t just add up those fractions to calculate the total number of bathrooms in a house as it would appear on a property listing. In other words, two half baths are not equal to one full bath. Here are some tips on how to approach this and other real estate bathroom maths.

## Calculation of the number of bathrooms in the house

There are some differences in how real estate agents count the total number of bathrooms in a home, but as a general rule, you start by adding up the number of complete bathrooms. This usually happens to be the first/integer in the list (before the decimal point or fraction).

Then it’s time to take into account 3/4, half and 1/4 baths – this is where things can get tricky. Fortunately, many homes have relatively simple combinations of full and half baths. So, for example, if there are two full bathrooms upstairs and a bathroom with a half bath downstairs, this would be a house with 2.5 bathrooms, even though the house has three rooms that most people identify as bathrooms.

## Calculating more complex math in the bathroom

Now that we’ve covered the basics, it’s time to get into the more advanced bathroom math, starting with 3/4 bathrooms. This relatively new real estate term refers to a bathroom with a sink, toilet, and either a single walk-in shower or a separate bath without a shower head. (In practice, however, this is almost always a shower stall.)

But thanks to countless home renovation projects that have included replacing the original tub and replacing it with a larger shower, some homes don’t have a tub at all. In this case, real estate agents will most likely refer to it as a full bathroom.

In regards to calculating the total number of bathrooms when using a 3/4 bath, here’s an example from Dan McCurley Real Estate :

1 bathroom [toilet, sink, shower and bath] + 3/4 baths [toilet, sink and shower] + 1/2 bath [toilet and sink] = 2.25 bathrooms

So he adds 3/4 (0.75) of a bathroom and half (0.5) of a bathroom to get 1.25 bathrooms, which he then adds to the full bath for a total of 2.25 bathrooms rooms.

But it doesn’t really fit his “two half baths don’t make a full bath” rule . And whether you agree with this math or not, it’s important to keep in mind that you may encounter it on some real estate listings.