Statistical calculation. In relation to housing data, the median house price is the middle price of all sales recorded in a particular suburb, postcode, city or state. If there were 100 sales in a particular suburb, in ascending order, the median would be number 50 on the list. It's commonly assumed that the median price is the same as the average price, but that's not the case. To calculate the average, you would add up the 100 sales and divide the total by 100 (the number of sales).