Reference: Fataawa Mu’aasirah – Page 26
al-Mowsoo’ah – No.4399
Question: We have a rented place which we have assumed like a musallaa [where we] pray the obligatory five [daily prayers] and the jumu’ah. This place is not owned by the Muslims, rather it is rented?
Response: This [place] does not take the ruling of the masjid. This place is a musallaa, based upon the proof that it is owned by another, and that its owner is free to sell it. So it is a musallaa and not a masjid, so the rulings of the masjid do not apply to it.