Personal Build
A personal build is a build out of the common builds sequence and typically using changes not yet committed into the version control. Personal builds are typically initiated from one of the supported IDEs via by the Remote Run procedure.
The build uses the current VCS repository sources plus the changed files identified during the remote run initiation. The results of the Personal Build can be seen in the "My Changes" view of the corresponding IDE plugin and on the Viewing Your Changes page of the TeamCity web UI. Finished personal builds are listed in the builds history, but only for the users who initiated them. See more at Pre-Tested (Delayed) Commit.
By default, users only see own personal builds in the builds lists, but this can be changed on Managing your User Account.
One can also mark a build as personal in Triggering a Custom Build dialog. By default, only users with Role and Permission can initiate a personal build.