.properties is a file extension for files mainly used in java related technologies to store the configurable parameters of an application. They can also be used for storing strings for Internationalization and localization; these are known as Property Resource Bundles.
Registration for this domain is open to anyone. The registry accepts registrations of internationalized domain names.
If you have houses, buildings or land to sell or rent, .properties is a great choice for your website. Then just add your city or region for a targeted, instantly recognizable web address.