|In some companies, rejecting this type of offer is tantamount to rejecting the company itself. In other companies, it is not a defining moment.|
In this decision, it is important to be absolutely certain that you do not want to relocate. One key way to be sure is to spend time in the new location, and you have done so.
As part of the decision-making process, it is essential to consider the possible consequences, one of which is the loss of this job. If you are absolutely certain that you are not going to accept the offer to move, then you have concluded that any problems that might arise from your refusal are less than those associated with relocating.
One way to get an idea of your company's potential reaction is to speak with any other employees who have rejected such a move in the past. If you can't find any, that might give you an answer.
Either way, you have made a brave decision that can give you great insight into your values and what you truly seek in your work and in life itself. Many employers actually respect this kind of thinking, and hopefully yours is one.