。
This land and this house are mine, I tell you.
Literal
This land [and-と] this house [topic-は] my thing [copula-です][emphatic-よ].
A straightforward assertion of ownership using 私の物 'my thing / my property.' 物 here is the concrete 'thing' sense, making the possessive claim about the physical object; compare 私のもの (often the same but with softer hiragana) or the more formal 私の所有物. The sentence-final よ gives an emphatic, almost defiant tone — probably a pushback against a property dispute. と here joins two nouns into an exhaustive list ('this land and this house,' not 'and others').