If you emerge as one of the top candidates at KB Home, your interviewer will want to get a feel for whether you are under any sort of timeframe for a decision if you were to be offered the position. Depending on how you answer, it can also serve as a reason for them to hurry any decision-making processes along. You want to be as upfront and honest with your interviewer as possible when you answer that question. If you have applied and are possibly interviewing with any other companies, even competitors, you can certainly disclose that to your interviewer. You can and should leave out details on who you are interviewing with and any specific offers. But if your heart is set on a position with KB Home, make sure to reiterate that as you answer.