The Racine Library wants to expand into Mount Pleasant. They have an endowment of $3 million which might be enough to purchase the land from the city of Racine. An aside: Why does Racine own land in Mount Pleasant? Anyway, it is not known "at this point ... exactly how the library would generate money for the materials and operating costs" according to the JT article.
I have a suggestion for the library board that might shed some light on where the money will come from. Call your own reference desk. Ask them how the current library is funded. This may provide valuable clues as to how additional libraries will be funded.