Both offerings were to be in the same hallowed spot. JESUS is both the sin-offering, and the burnt-offering of his people.
Related Commentaries of Leviticus 14:13
Leviticus 14:13
13 And he shall slay the lamb in the place where he shall kill the sin offering and the burnt offering, in the holy place: for as the sin offering is the priest's, so is the trespass offering: it is most holy: