Regulations for Legal Nonconforming Structures in Charlotte

Legal nonconforming structures within the City of Charlotte are permitted to continue their existence and undergo normal maintenance provided their nonconforming status is verified by the property owner. While these structures generally cannot be expanded or renovated without being brought into full compliance, the City of Charlotte allows for limited additions and changes of use if specific dimensional, height, and parking standards are met. In the event of damage by natural disasters or acts of God, owners have an 18-month window to initiate repairs or restoration to the structure's original dimensions [Section 38.3].

General Principles and Authority to Continue

A nonconforming structure is defined by the City of Charlotte as any building or structure that was lawfully established prior to June 1, 2023, or any subsequent amendment, but no longer meets the current Unified Development Ordinance (UDO) standards for dimensions, area, width, or coverage [Section 2.3].

The City of Charlotte provides the following protections and requirements for these structures:

Right to Continue: Any structure that legally existed as of the effective date of the City of Charlotte Unified Development Ordinance may continue to exist [Section 38.1.B].
Burden of Proof: The responsibility of establishing that a structure is legally nonconforming rests entirely on the property owner or operator. This status is determined by the Zoning Administrator based on evidence provided [Section 38.1.C].
Maintenance: Normal repair and maintenance activities are permitted to ensure the continued use and safety of the nonconforming structure [Section 38.3.A].

Maintenance, Renovation, and Change of Use

The City of Charlotte strictly regulates how a nonconforming structure may be altered. Unless specific exceptions are met, these structures may not undergo a change of use, extensive renovation, or expansion [Section 38.3.B].

A nonconforming structure may undergo a change of use or renovation without being brought into full conformity if the following two conditions are met:

The new use is a permitted use within the structure’s specific zoning district.
The required number of parking spaces for the new use conforms to the City of Charlotte Unified Development Ordinance standards [Section 38.3.C].

Expansion and Additions

If an owner wishes to expand a nonconforming structure, the area of the expansion must comply with all current City of Charlotte standards. For structures located in high-intensity districts, the City of Charlotte Unified Development Ordinance provides specific thresholds for compliance.

Standards for Additions in Specific Districts

The following standards apply to additions to legally nonconforming structures in the Neighborhood Center (NC), Regional Activity Center (RAC), Innovation Mixed-Use (IMU), Transit Oriented Development (TOD), IC-2, RC, and CAC-2 Zoning Districts [Section 38.3.D.1].

Addition Size	Requirements for the Addition Area
Small Additions (Under 25% of GFA or 1,000 sq. ft., whichever is less)	Must meet: Required frontage setback line; Build-to zone (may be waived if impractical); Minimum build-to percentage (may be waived if impractical); Side and rear setbacks; Maximum building height.
Large Additions (Equal to or exceeding 25% of GFA or 1,000 sq. ft., whichever is less)	Must comply with all zoning district standards, except for requirements regarding the vertical distance between the building entry and the sidewalk.

If additions are made incrementally over time, the City of Charlotte requires the sum total of all expansions occurring after June 1, 2023, to be recorded to ensure the 25% or 1,000 square foot limitations are not exceeded without triggering full compliance [Section 38.3.D.2].

Damage, Destruction, and Movement

Specific rules apply when a nonconforming structure is moved or damaged by unforeseen events:

Movement: A nonconforming structure cannot be moved unless it is relocated to a site where it will thereafter conform to all standards of the City of Charlotte zoning district in which it is placed [Section 38.3.F].
Restoration After Damage: If a nonconforming structure is destroyed or damaged by fire, flood, wind, or an act of God, it may be repaired or restored to its original dimensions. The property owner must submit a building permit application for the repair or restoration within 18 months of the date the damage occurred [Section 38.3.G].
Manufactured Homes: In a nonconforming manufactured home park, an existing unit may be replaced with a new unit provided the total number of units does not increase and the replacement does not worsen nonconforming setbacks or separation distances [Section 38.3.H].

Sections Cited