Oregon Revised Statutes Property Rights and Transactions § 90.528

(1) A landlord who rents a space for a manufactured dwelling may require a deposit for the use of common areas or facilities by a tenant or tenants. The amount of any deposit charged for the use of common areas or facilities shall be reasonably based on the potential cleaning cost or other costs associated with the use of the area or facility. Conditions for return of a deposit shall be stated in writing and made available to the tenant or tenants placing the deposit.

(2) No tenant shall be required to acquire a bond or insurance policy as a precondition for the use of common areas or facilities.

(3) A landlord who rents a space for a manufactured dwelling shall not prohibit use of a common area or facility if the purpose of the prohibition is to prevent the use of the area or facility for tenant association meetings, tenant organizing meetings or other lawful tenant activities.