Encroachments and obstructions in a street may be removed and excavations refilled, and the expense of such removal or refilling charged to the abutting land owner, when such conditions are made or permitted by him or her or suffered to remain by him or her otherwise than in accordance with the provisions of this chapter. The procedure for collection of such expenses shall be as prescribed in Chapter 248. Council may, by resolution, permit the continuance of an existing encroachment. No such resolution shall vest any permanent rights in the person owning or occupying the structure which encroaches upon a street.