3-a__Historic Preservation Text Amendment Staff Report

City of Mesa — Historic Preservation Board (2026-09-01)

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Historic Preservation Board Report 
 
 
Date:   
September 01, 2026 
 
To:  
 
Historic Preservation Board 
 
Through: 
Marc Heirshberg, Assistant City Manager 
 
From:   
Nana Appiah, Development Services Director 
Mary Kopaskie-Brown, Planning Director 
Rachel Phillips, Assistant Planning Director 
Matthew Kriegl, Historic Preservation Officer 
Meghan Eaton, City Archaeologist 
 
Subject:  
Mesa Zoning Ordinance text amendments (Historic Preservation Procedures)- 
Proposed amendments to Mesa City Code Title 11, Chapters 23, 44, 66, 74, and 
87 . (Citywide) 
 
Recommendation 
 
Staff recommends that the Historic Preservation Board provide a recommendation that the City 
Council adopt the proposed Mesa Zoning Ordinance text amendments (Historic Preservation 
Procedures). 
Purpose 
 
Over time, City staff, the Historic Preservation Board, preservation professionals, and the 
development community have identified opportunities to improve the organization, clarity, and 
usability of Mesa's Historic Preservation regulations. These discussions emphasized the need to 
reduce redundancy, improve consistency, simplify regulatory language, and create a more 
intuitive framework for applicants, property owners, and decision-makers while continuing to 
protect the City's historic and archaeological resources. 
 
The proposed text amendments reflect these efforts by consolidating related historic preservation 
provisions into a single Historic Preservation Overlay chapter, reorganizing regulations into a 
more logical format, and eliminating repetitive or outdated language. As part of this effort, similar 
resource types, including buildings, structures, objects, sites, archaeological resources, and 
districts have been consolidated under common terminology where appropriate, reducing 
unnecessary repetition while maintaining the intent and applicability of the regulations. 
 
The amendments also clarify existing procedures and review standards, improve efficiency, and 
align the ordinance with current historic preservation best practices.  Collectively, these changes 
will support the clear and efficient administration of the Historic Preservation regulations, enhance

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communication with applicants and property owners, and ensure the City's regulations continue 
to effectively preserve and protect Mesa's historic resources.  
 
Staff is recommending amendments to Mesa City Code Title 11 (Zoning Ordinance), Chapters 23, 
44, 66, 74, and 87 of  to reorganize and modernize the City's Historic Preservation Procedures. 
The proposed text amendments are attached to this report as Exhibit 1 – Chapter 74, Historic 
Preservation Ordinance and Exhibit 2 – Adoption by reference, Chapter 74: Historic Preservation 
Procedures. Specifically, the proposed text amendments, will in pertinent part:  
1. Consolidate the City’s Historic Preservation regulations. 
2. Create consistent Historic Preservation procedures to ensure objective standards and 
consistent, predictable outcomes. 
3. Improve the review of Historic Preservation projects. 
4. Strengthen protections for Historically Designated Signs. 
5. Create a new section for Archaeological Resources. 
6. Provide definitions for previously undefined terms. 
7. Reformat Historic Preservation Board authority and duties. 
Discussion 
1. Consolidate the City’s Historic Preservation regulations. 
The City's Historic Preservation regulations are currently located in multiple chapters 
throughout the Mesa Zoning Ordinance (MZO), requiring applicants, property owners, staff, 
and the public to navigate several sections of the MZO to understand related Historic 
Preservation requirements. Historic District and Historic Landmark procedures are currently 
located in Chapter 74, Historic Preservation Overlay regulations are contained in Chapter 23, 
Historic Sign regulations are located in Chapter 44, and related provisions are dispersed 
throughout other chapters of the MZO.  
To improve usability and administration, staff proposes repealing Chapters 23, 44, and the 
existing Chapter 74 and replacing them with a new comprehensive Chapter 74, titled “Historic 
Preservation Procedures.” The new chapter consolidates the City's Historic Preservation 
regulations into a single location, improving organization, eliminating redundancy, and 
creating a more cohesive framework for administering the City's Historic Preservation 
program. 
The consolidated chapter includes procedures for the Mesa Historic Property Register, 
Historic Preservation Overlay, Certificates of Appropriateness, Historically Designated Signs, 
Archaeological Resources, and Appeals. This reorganization simplifies navigation of the 
Ordinance while maintaining the overall intent of the City's Historic Preservation regulations.

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2. Improve the clarity and usability of Historic Preservation procedures. 
The proposed amendments clarify existing procedures and review standards, streamline the 
organization of the regulations, and improve the overall usability of the City's Historic 
Preservation program.  The changes are intended to make the regulations easier to 
understand and administer for applicants, property owners, staff, and the Historic Preservation 
Board. 
The amendments consolidate the existing Historic District and Historic Landmark Overlays 
into a single Historic Preservation Overlay, creating one zoning designation for all locally 
designated Historic Resources. This change simplifies administration, reduces confusion 
associated with multiple historic overlay classifications, and provides a more consistent 
regulatory framework without altering the intent of the existing regulations. 
The Mesa Historic Property Register (MHPR) section has also been revised to clearly identify 
all locally designated Historic Resources subject to the Historic Preservation Overlay, while 
the Supplemental Inventory List is proposed to include Historic Resources that have been 
determined eligible for the MHPR but not yet formally designated.   
To further the designation criteria for Historic Resources have been updated to align with 
nationally recognized historic preservation standards. Staff recommends Historic Resources 
be evaluated consistent with the Secretary of the Interior's framework. These revisions create 
a more transparent and predictable designation process. 
3. Improve the review of Historic Preservation projects. 
The proposed amendments reorganize and clarify the Certificate of Appropriateness (COA) 
process to improve efficiency, consistency, and ease of administration. 
The revised procedures clarify when a COA is required, identify activities that qualify as 
ordinary maintenance and are exempt from review, clarify application requirements, establish 
review timelines, and coordinate the COA process with building permit issuance. The 
amendments further clarify that review decisions are based on the Secretary of the Interior's 
Standards for the Treatment of Historic Properties, the Mesa Historic Preservation Design 
Guidelines, and the MZO. 
The proposed amendments also establish an expedited review process for emergency repairs 
by allowing a COA to be issued concurrently with the associated building permit when 
immediate repairs are necessary. Additionally, the amendments strengthen the "Duty to 
Maintain" requirement. This provision requires designated properties to be maintained and 
discourages demolition through neglect. 
4. Strengthen protections for Historically Designated Signs. 
The proposed amendments repeal the existing Historic Sign regulations contained in Chapter 
44 and incorporate them into the new Chapter 74 as an updated “Historically Designated 
Signs” section. 
The revised section clarifies the procedures for the designation, restoration, maintenance, 
modification, and revocation of Historically Designated Signs. The amendments revise the 
Mesa Historic Sign Register with updated eligibility criteria, application and review procedures,

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restoration and maintenance requirements, and procedures for future modifications and 
revocation of designation. 
5. Create a new section for Archaeological Resources. 
The proposed amendments establish a new Archaeological Resources section within Chapter 
74 to recognize the importance of the Mesa's archaeological past and cultural heritage. 
The new section requires that development comply with all applicable local, state, and federal 
laws governing the protection of cultural resources. For private development, it is the 
responsibility of the developer to consult with the City Archaeologist, State Historic 
Preservation Office, Tribal Historic Preservation Offices, and other qualified professionals.  
Prior to excavating on land owned or controlled by the City, the developer shall consult with 
the City Archaeologist who may conduct an archaeological assessment to determine whether 
the property contains protected cultural materials governed by applicable local, state, or 
federal laws and regulations. 
6. Provide definitions for previously undefined terms. 
The proposed amendments modify Chapter 87 by adding a new category of definitions titled 
“Historic Preservation Related Definitions.” These terms are currently used throughout the 
Zoning Ordinance but have never been formally defined. All the other definitions in Chapter 
87 shall remain the same. New definitions include: 
CERTIFICATE OF APPROPRIATENESS: An official document issued by the City of Mesa 
confirming that proposed work on a Historic Resource is compatible with the historic character 
of the Historic Preservation Overlay. The certificate authorizes the specified work to proceed 
and permits the issuance of any required construction permit(s) related to the approved scope 
of work. 
HISTORIC DISTRICT: A collection of Historic Resources which possess a significant 
concentration, linkage, continuity or are united historically or aesthetically by a plan or physical 
development and is designated with a Historic Preservation Overlay. 
HISTORIC LANDMARK: Any Historic Resource that is an exceptional example of the 
historical, archaeological, cultural, architectural, community, aesthetic, or artistic heritage of 
the city and is designated with a Historic Preservation Overlay. 
HISTORIC PRESERVATION OVERLAY: A zoning designation that is used in conjunction with 
an underlying base zoning district and includes regulations for a Historic Landmark or Historic 
District to preserve the historical significance of Historic Resources. 
HISTORIC RESOURCE: Collectively, the building(s), structure(s), object(s), site(s), 
archaeological resource(s), and district(s), that together, retain historical, architectural, 
archaeological, or cultural significance within the corporate limits of the city. 
HISTORICALLY DESIGNATED SIGN: A sign that meets the criteria for establishment outlined 
in Section 11-74-5(D) of the Zoning Ordinance and has been approved by the Historic 
Preservation Board.

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STATE OF DISREPAIR: The deterioration of any significant exterior feature on a Historic 
Resource in a Historic Preservation Overlay which would have a detrimental effect on the 
distinctive character of the Historic Resource itself or that of the district. 
7. Reformat Historic Preservation Board authority and duties. 
The proposed amendments revise Section 11-66-4 to reformat the organization and operation 
of the Historic Preservation Board. The revisions confirm that the section specifically governs 
the Historic Preservation Board, designates the Historic Preservation Officer (or designee) as 
Secretary to the Board, and clarify that a minimum of four members constitutes a quorum for 
conducting official business. 
These amendments are administrative in nature and improve the clarity of the Board's 
procedures without substantially changing the Board's existing authority or responsibilities. 
Citizen Participation  
 
Historic Preservation Board (Introduction) - August 1, 2023 
Staff presented the initial draft of the proposed Historic Preservation Text Amendments to the 
Historic Preservation Board for discussion and public input.    
 
Community Outreach Meeting - August 24, 2023 
The public was invited to attend a community outreach meeting to review and discuss the 
proposed Historic Preservation Text Amendments and Historic Preservation Design Guidelines.  
 
Staff received comments from attendees, many of which related to the Historic Preservation 
Design Guidelines or other related issues rather than the proposed text amendments.   
 
Historic Preservation Board – September 5, 2023 
The Historic Preservation Board gave a recommendation of approval to the City Council with the 
following changes: 1) Define State of Disrepair; 2) Remove “Historic District” language from 11-
74-4(F) 1; 3) Add to the code related to Stay of Demolition, on the time frame “if parties agree to 
extend;” 4) Stay of Demolition for 1 year based on the importance of neighborhoods and history 
for existing Historic Districts and 180 days for the supplemental list.   
 
While staff continued to edit the document based on Board feedback, it was ultimately never sent 
to the Planning & Zoning Board for their review and recommendation to City Council. 
 
Historic Preservation Board (Introduction) - July 7, 2026 
Staff presented a revised draft of the Historic Preservation Text Amendments to the Historic 
Preservation Board for review and public comment.  
 
Discussion focused primarily on the administration of the Supplemental Inventory List, 
archaeological resource provisions, and coordination with preservation partners, including the 
Arizona State Historic Preservation Office (SHPO) and the Mesa Preservation Foundation.  
 
The Board's comments and recommendations were considered and incorporated, as appropriate, 
into the proposed Historic Preservation Procedures text amendments.

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Community Outreach Meeting - July 21, 2026 
A second community outreach meeting was held to present the revised Historic Preservation 
Ordinance Text Amendments and Historic Preservation Design Guidelines.  The general 
assessment of the amendments by the attendees was positive.  There was appreciation that the 
code amendments were mostly focused on clarification and reorganization rather than adding 
additional content.  There was a question about where the extended delay for demolitions came 
from – which was the Historic Preservation Board and SHPO along with some neighbors – and 
how the extended time would allow for more alternative options – which would be in coordination 
with the HPB.  Overall, the neighbors seemed pleased with the amendments and there was no 
opposition to the proposed changes.  
 
Planning & Zoning Board (Study Session) - July 22, 2026 
Staff presented the proposed text amendments at the July 22, 2026, Planning & Zoning Board 
Study Session.  There was a question about the extended demolition procedure and how that 
was proposed, to which staff responded it was a request from the Historic Preservation Board 
and members of the public.   
 
One member of the public attended and did not provide comments on the proposed text 
amendments.  Board comments and questions have been addressed by staff. 
 
Additional Outreach and Coordination 
In addition to these public meetings, staff consulted with the Arizona State Historic Preservation 
Office (SHPO), the Salt River Pima-Maricopa Indian Community Tribal Historic Preservation 
Office (THPO), Gila River Indian Community THPO, and the Mesa Preservation Foundation 
during the development of the proposed text amendments.  
 
Information regarding the proposed text amendments has also been made available on the City's 
website to provide additional opportunities for public review and comment.  No comments have 
been received by staff.   
Implementation 
 
Staff recommends the ordinance approving the proposed text amendments become effective 30 
days from the date of City Council approval.  
Exhibits 
 
Exhibit 1 – Chapter 74: Historic Preservation Procedures Text Amendments (Draft)  
Exhibit 2 – Historic Preservation Ordinance (Draft)