INTRODUCTION
Tucson Unified Development Code § 9.1.1
in effect9.1.1. INTRODUCTION
Uses, buildings
Building
A structure having a roof supported by columns, posts, or walls and intended for the shelter, housing, or enclosure of any person, entity, animal, process, equipment, goods, or materials of any kind or nature.
, or structures
Structure
A physical element constructed or erected with a fixed location on the ground or attached to another physical element having a fixed location at, below, or above grade. Structures include such elements as, but are not limited to, buildings, paved areas, walls, fences, posts, and patios.
that came into existence legally but that do not comply with one or more requirements of the Unified Development Code (UDC)
Unified Development Code (UDC)
Chapter 23B of the Tucson Code as adopted by the Mayor and Council establishing zoning regulations governing the use, placement, spacing, and size of land and structures within the corporate limits of the City. Such regulations are applied on individual properties through the use of zoning districts. The boundaries of these districts are depicted on the adopted City Zoning Maps. For the purposes of convenience and ease of use, the UDC is also published as a separate book from the Tucson Code.
may continue to operate or be used as provided below. A nonconforming use
Nonconforming Use
An existing land use activity lawfully established and maintained which no longer complies with land use standards of the Unified Development Code (UDC) applicable to the zoning category in which the land use activity is located.
may be discontinued, resumed, expanded, or substituted with another nonconforming use
Nonconforming Use
An existing land use activity lawfully established and maintained which no longer complies with land use standards of the Unified Development Code (UDC) applicable to the zoning category in which the land use activity is located.
, and nonconforming structures
Nonconforming Structure or Lot
A structure or portion thereof that was lawfully erected or altered or a lot that was legally established that no longer complies with the specific land use standards of the Unified Development Code (UDC) applicable to the zoning category in which the building or structure or lot is located.
may be reconstructed or expanded as provided below, except for advertising and outdoor signs, which are regulated by the Sign Code, Article 7A, Sign Standards.
(Am. Ord. 11508, 12/5/2017)
Source: City of Tucson, Tucson Code (Charter and General Ordinances) and Unified Development Code (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/tucson/latest/tucson_az_udc/0-0-0-6894Fetched: 10/28/2026