Portland City Code ch. 6 (Buildings and Building Regulations) § 6-230

Sec. 6-230. Purpose.

The purpose of this Article is to address increasing rental
costs within the City of Portland; to promote neighborhood and
community stability; to protect the City’s tenant population; to
limit arbitrary evictions; and to stabilize and make more
predictable future rent increases, all while remaining in
conformance with Maine law, and ensuring that Landlords within
the City receive a fair return on investment.
(By Referendum, 11-3-2020)