For questions on building permitting, call the On Call Building Plan Review at 6025063301. Development Services provides the City Council and community with creative guidance and effective implementation of land use development.Obtaining a building permit prior to construction or installation. All residential rental properties in Maricopa County, including short-term rentals, must be registered with the Maricopa County Assessor's Office. Our housing vouchers and special programs assist those in need of permanent housing through Landlord Housing Assistance Payments (HAP). Residential Rental is the rental of real property for a period of 30 or more consecutive days for residential purposes only and not commercial. Check your Maricopa property to look at your specific ADU requirements.