Real estate trading, also known as real estate swapping, is a sort of an agreement between two landlords both willing to relocate, i.e. to sell a house and buy another one. It is a perfect solution for two owners, but only under some special conditions. Understanding advantages of deals of such kind people begun to provide real estate trading services, dealing with various real estate types. The mechanics working behind these kinds of trading systems is very simple and is based on arrays of data comparison procedure, running a kind of fuzzy match algorithm until a perfect match found; just like an online dating service.

Basically, every real estate trading website is offering a service of simultaneous sale, i.e. swap, where the two, as close as possible, buy and sell transactions should be conducted in the same time; or, cannot take place. Because two realties are almost never happen to be equal in price, the deal may be closed if, and only if, a certain part of one's equity is applied towards another's property, which is not that easy to do by the way.

Very often people, especially those owning expensive items of property, cannot find a perfect match to swap with; if so, the owner of such a realty has some other options, including swapping as well – he or she may find a cheaper property in order to close the deal; or, if this variant is still inappropriate, there may be a mere sale, and after it, one can start looking for the property of his or her dream.