County Improvement Districts

What is an Improvement District?

Per state law, residents in a neighborhood or a community in an unincorporated area of the county may choose to form a County Improvement District (CID) to fund infrastructure improvements including:

  • Roadway paving
  • Street lighting
  • Water or sewer service
  • Community parks
  • Traffic calming

Per state statutes, these improvements are financed through the issuance of improvement bonds. Once the improvements are complete, an assessment or tax is placed on the properties within the CID and will remain until the bonds have been repaid. Some CIDs require ongoing payment for continuous services such as street lighting or sewer service.

The Board of Supervisors (BOS) has created the Office of the Superintendent of Streets (OSoS) to assist the residents and facilitate the establishment of CIDs in accordance with said statutes.

County residents interested in establishing a CID can go to our steps and procedures page to find out how to start one. You may also contact us at (602) 506-8797.

Additional Information for Certain Types of County Improvement Districts

Paving

A Paving Improvement District (PID) is designed to provide neighborhoods with a method to pave streets or make roadway improvements on private roads. These Districts are established through a resident driven petition process.

PID streets are constructed with the intent to turn over ownership, operation, and maintenance to the Maricopa County Department of Transportation (MCDOT). MCDOT requires that these streets meet the following criteria:

  • Easements must meet a 50 foot minimum and be dedicated to the public and accepted by County Board of Supervisors
  • Roads/streets must be engineered by a registered professional engineer
  • Construction must be permitted and constructed to MCDOT standards via an open Low-Bid process
  • A licensed-bonded contractor must be selected through sealed bid process as prescribed by statutes.

Lighting

For Street Lighting in Existing Developments

A Public Lighting Improvement District (PLID) may be formed to make street lighting improvements along an existing public street. These Districts are established through a resident driven petition process.

PLIDs must meet the following criteria:

  • The public lighting improvements are constructed with the intent to turn over ownership to the local power utility company which will require that the improvements meet their lighting standards
  • The property owners within this proposed district are responsible for purchasing the energy for the public lighting improvements by forming a subsequent Street Lighting Improvement District (see below)
  • The street light design must be performed by a registered professional engineer
  • The street lighting must be constructed by a licensed-bonded contractor selected through sealed bid process as prescribed by statutes

For Street Lighting in New Developments

  • A Street Lighting Improvement District (SLID) may be formed for the sole purpose of paying for the energy to power street lights on the public streets and parks.
  • A SLID does not cover the costs of constructing the street lights. Construction costs must be incurred by the developer. The SLID provides the means for purchasing energy for lighting public streets and parks. The SLID also provides a mechanism to split these energy costs among all property owners in the SLID.

Maintenance

A Maintenance Improvement District (MID) is designed to provide neighborhoods a method of hiring a road grading service for a publicly dedicated access easement (typically existing dirt roads). The MID distributes the cost among all property owners who benefit from the grading service. Maintenance is provided by a licensed-bonded contractor selected through sealed bid process as prescribed by statutes. A Maintenance Improvement District is established through a resident driven petition process and is only available outside the PM-10 Boundary.