Setback Requirements for the DC: Downtown Core District in Mesa

In the City of Mesa, the DC: Downtown Core district does not have fixed minimum setbacks. Instead, yard setbacks are discretionary and determined on a project-by-project basis by the Planning & Zoning Board to accommodate the highest intensity of land use. For properties governed by the Form-Based Code within the downtown area, typical setbacks for high-intensity urban environments are 0 feet.

General Setback Standards for Downtown Core (DC)

The City of Mesa established the DC: Downtown Core district to encourage the highest intensity of land use to be developed and maintained within the downtown area. Because this district serves as a vibrant focal point for the municipality, the City of Mesa Zoning Ordinance provides maximum flexibility regarding building placement to achieve high-density redevelopment [Section 11-8-1].

Discretionary Determination

Unlike other zoning districts in the City of Mesa that have fixed numerical tables, the setbacks for the DC district are determined as follows:

Variable Requirements: Minimum lot area and yard setbacks vary based on the specific type of development, the proposed use, and the size, scope, and density of the project.
Review Authority: The City of Mesa Planning & Zoning Board is responsible for reviewing projects and determining the specific yard regulations for each individual project [Section 11-8-6].

Form-Based Code and Transect Overlays

The City of Mesa often applies the Form-Based Code (FBC) to parcels in the downtown area. If a property in the Downtown Core has opted into the Form-Based Code and is mapped within a high-intensity Transect Zone (such as T6MS - Transect 6: Main Street), specific urban setbacks apply to ensure a continuous street wall [Section 11-56-2].

T6MS (High-Intensity Downtown) Setback Requirements

For developments in the T6MS transect—which represents the most intense urban character in the City of Mesa—the following standards generally apply:

Requirement Type	Standard Requirement
Front Build-to Line (BTL)	0' maximum
Side Street Build-to Line (BTL)	0' maximum
Interior Side Setback	0' minimum
Rear Setback	0' minimum

Note: In the T6MS zone, the building must be placed at the Build-to Line to ensure a pedestrian-oriented environment [Section 11-58-11].

Supplemental Regulations for All Downtown Districts

Regardless of the specific setbacks determined by the Board, all properties in the City of Mesa's downtown districts (including DC, DB, and DR) must adhere to supplemental rules regarding building projections and encroachments [Section 11-8-7].

Feature/Encroachment Type	Allowance/Restriction
Minimum Distance to Interior Lot Line	No projection may extend closer than 2 feet to an interior lot line.
Public Utility Easements	No projection may extend into a public utility easement.
Awnings, Eaves, and Overhangs	May encroach up to 3 feet into any required yard.
Vestibules, Bay Windows, and Chimneys	May encroach up to 3 feet into a front/rear yard or 2 feet into a side yard (limited to 1/3 of the wall length).
Staircases	May encroach up to 3 feet into a front yard or 10 feet into a rear yard.

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