what may happen to supply and demand in this example?

Question

say prices of houses off-compus become lower than in On-compus, and number of students entering the university is increasing.

then what may happen to the demand and supply here?

Answer 1

Prices of off-campus is lower. This is a substitute and the price is lower. Your whole demand curve will shift down as some people choose the substitute.

Increased enrollment - More people than before need the product - Whole demand curve shifts up.

In both of these cases, the supply has changes along the existing supply curve.

Answer 2

The lower price off campus demand will increase, until or unless the price increases comparable to on campus living. The price of on campus demand will decrease, unless the prices are lower.