Numbers 18:23-24 New American Standard Bible (NASB)
23 Only the Levites shall perform the service of the tent of meeting, and they shall bear their iniquity; it shall be a perpetual statute throughout your generations, and among the sons of Israel they shall have no inheritance. 24 For the tithe of the sons of Israel, which they offer as an offering to the Lord, I have given to the Levites for an inheritance; therefore I have said concerning them, ‘They shall have no inheritance among the sons of Israel.’”
In the verse above, it states that the Levites shall have No inheritance among the sons of Israel ( correct me if I'm wrong, I believe it also means the Levites can Not own land ).
Deuteronomy 18 New American Standard Bible (NASB)
6 “Now if a Levite comes from any of your [e]towns throughout Israel where he resides, and comes [f]whenever he desires to the place which the Lord chooses, 7 then he shall serve in the name of the Lord his God, like all his fellow Levites who stand there before the Lord. 8 They shall eat [g]equal portions, except what they receive from the sale of their fathers’ estates.
Therefore, how could the Levites have any estates that is mentioned in Deuteronomy 18?