Case law holds that a person can have multiple residences but only one domicile. Look up the following case on Google Scholar for more information:
Deer Consumer Products v. Little, 35 Misc.3d 374.
The above answer, and any follow up comments or emails is for informational purposes only and not meant as legal advice.
What is the context of your question? You mentioned that the "town" tells you that your domicile is your boyfriend's residence; what is the issue you're having with the town? Also, you mentioned that you share the house with two other girls, do you rent to them? Do you have your own room/space in the house?
Based on the facts you state, the home you own is your domicile. This is in accordance with the regulations of the New York State Department of Taxation and Finance:
You should consult an attorney if your town is giving you some sort of problem by alleging that you are domiciled at your boyfriend's home.
The above constitutes general information only and should not be considered legal advice.
Yes, you can call your private home your domicile. One can have several residences, but only one domicile. Your "legal residence" or “domicile,” is the place where you have your true, fixed, permanent home and and where you intend to remain permanently (or at least indefinitely). It is the home to which you intend to return when you are absent, and from which you do not presently intend to move. For a place to be considered your domicile, there must be a specific intent as well as a physical presence. The best proof of your intent is what you testify it to be.
The determination of this issue of domicile naturally will turn on the facts of the case. The courts in Maryland first look to intent and presume that a person is domiciled (resides) where he primarily lives; however, that is a “rebuttable presumption.” The courts (and perhaps initially your town) will analyze the facts using specific factors found in case or other law (e.g. oaths of other residences given, tax return information, voter registration, where you own real property, mail delivery, where you bank or your kids attend school or church, etc..) to make a judgment. You may wish to seek legal counsel.