What Defines a Historic Building in County Jurisdictions?

There’s something magical about old buildings. Maybe it’s the worn brick walls, the creaky wooden floors, or the feeling that if they could talk, they’d have incredible stories to tell. A small-town diner where generations have gathered, a family home that has seen laughter and loss, or a grand theater that once hosted legends—these places hold pieces of our history. 

But what exactly makes a building “historic”? Is it its age, its design, or the events it has seen unfold within its walls? Across the United States, counties work tirelessly to identify and protect these landmarks, ensuring they remain a part of our landscapes and our memories for generations to come. Yet, the process of defining what qualifies as historic isn’t as simple as it seems.

In this article, we’ll dive into the fascinating world of historic building preservation, uncovering the key criteria counties use to designate these treasured sites. 

The Legal Definition of Historic Building

A historic building carries a legal definition tied to its cultural, architectural, or historical significance. Laws often define these structures based on specific criteria, including their age, design, and association with notable events or figures. Typically, a building must be at least 50 years old to qualify, though exceptions exist for sites with extraordinary significance. Governing bodies assess these factors through preservation boards or heritage commissions, which determine eligibility for legal protections. This process ensures that only structures with genuine historic value receive formal recognition.

Once classified as historic, these buildings become subject to laws designed to protect their integrity and character. Owners must follow guidelines for maintenance, restoration, and alterations to preserve the original features that make the structure significant. These protections aim to safeguard cultural heritage while balancing the practical needs of modern use. Legal safeguards not only preserve these landmarks but also ensure that their value endures for future generations.

Key Criteria for Historic Designation

When it comes to identifying a historic building, counties often look at a few essential factors. Age is usually the starting point—most places require a structure to be at least 50 years old. But age alone isn’t enough to earn a historic title. A building needs to stand out for its architectural charm, unique design, or ability to represent a specific era. If it’s tied to a notable event or person, that’s an added bonus. These factors work together to ensure that only buildings with true cultural or historical value receive this special recognition.

Counties also consider how well the building has preserved its original character. For example, a beautifully maintained Victorian home tells a richer story than one with too many modern updates. Sometimes, the surroundings matter too—a historic building might gain even more significance if it contributes to the charm or heritage of an entire neighborhood. By focusing on these criteria, counties protect structures that serve as windows into our shared past.

Differences Between County Jurisdictions 

While the basic criteria for historic designation stay the same, how counties approach it can vary a lot. Some counties emphasize preserving buildings that reflect their local identity. A region known for its farming history might prioritize old barns, while an area with a strong industrial past could focus on factories and warehouses. These differences allow counties to protect what matters most to their communities while staying true to their roots.

The process for getting a building recognized as historic can also look different depending on where you are. Larger counties often have dedicated preservation boards and formal steps like public hearings. Smaller jurisdictions might lean on state resources or keep things simple due to limited budgets. Incentives also play a role—some counties offer grants or tax breaks to encourage preservation, while others focus more on enforcing rules. These variations make historic preservation a unique journey in every community.

The approaches to historic preservation vary significantly between larger and smaller counties, reflecting their distinct histories, resources, and community priorities, as shown in the table below.

Why Historic Designation Matters

Historic designation plays a vital role in preserving cultural identity and fostering community pride. These buildings tell stories about the past, showcasing craftsmanship and architectural styles that reflect the values ​​of their time. They serve as tangible connections to history, offering residents and visitors a chance to experience the heritage of a place firsthand. Protecting these structures ensures that future generations can learn from and appreciate the legacy of those who came before them.

Beyond cultural value, historic designation also brings practical benefits. It can boost local economies by attracting tourism and enhancing property values. Visitors often seek out historic districts for their charm, spending money at nearby businesses and events. Designation can also qualify property owners for grants and tax incentives, making preservation efforts more feasible. By valuing historic buildings, communities invest in both their identity and economic growth.

The Role of County Preservation Offices

County preservation offices lead the way in identifying, protecting, and restoring historic buildings. They work closely with local property owners to assess structures and guide them through the designation process. These offices evaluate a building’s historical, architectural, or cultural significance and ensure it meets established criteria. Their expertise helps maintain a consistent approach to preservation while addressing the unique needs of the community.

These offices also act as educators and advocates for historic preservation. They organize workshops, provide resources, and share knowledge about the benefits of protecting historic structures. By engaging with the public, they build support for preservation efforts and foster a sense of shared responsibility. Preservation offices connect community members with tools and programs that make it easier to care for historic properties, ensuring these landmarks remain part of the local landscape. 

Collaboration with State and Federal Authorities

 County preservation offices often collaborate with state and federal agencies to strengthen their efforts. This partnership ensures that local projects align with broader preservation goals and access additional resources. State historic preservation offices provide funding, technical support, and guidance to help navigate counties complex regulations. Federal programs, such as the National Register of Historic Places, add further recognition and protection for qualifying buildings. 

These partnerships also create opportunities for grant funding and tax credits. Counties can apply for financial assistance to restore or maintain historic properties, making preservation more accessible for property owners. State and federal agencies also offer training and resources to help counties improve their preservation programs. Together, these collaborations create a network of support that enhances local preservation efforts and safeguards the nation’s shared history.

Steps to Designating a Building as Historic

Designating a building as historic begins with understanding its importance and following a clear process. These steps ensure the evaluation is thorough and aligns with local preservation standards:

• Research the Property: Gather original plans, historical records, photographs, and other documentation to establish the property’s historical significance.
• Submit an Application: Property owners or community members provide the collected materials to the county preservation board or a similar authority.
• Expert Evaluation: Preservation experts conduct detailed inspections and reviews to assess the structure’s condition and alignment with criteria like age, architectural style, or historical associations.
• Public Hearing: Community members can share their opinions on the proposed designation during a formal hearing.
• Approval and Designation: After a successful review and hearing, the building gains historic status, along with specific preservation guidelines and possible incentives.

Maintenance and Restoration of Historic Building

Preserving historic buildings requires a careful balance between maintenance, restoration, and modernization. Regular inspections are essential to identify structural issues, weathering, or material deterioration before they become major concerns. As structural engineering experts, Eastern Engineering Group plays a key role in this process, ensuring that these buildings remain both safe and true to their historical character. Our team of licensed professionals conducts thorough evaluations to detect vulnerabilities and recommend preservation strategies that honor the building’s original integrity.

With the right expertise and approach, historic structures can continue to serve their communities for generations, blending history with modern functionality while retaining the character that makes them irreplaceable.

Examples of Iconic Historic Buildings by County

Historic buildings across the United States tell stories about their communities, each one offering a unique glimpse into the past. In Miami-Dade County, the Freedom Tower stands as a heartfelt tribute to Cuban-American history. Its stunning Mediterranean Revival design and role as a processing center for Cuban refugees make it a deeply cherished part of Miami’s identity. Another gem in the area is the Biltmore Hotel in Coral Gables. Known for its breathtaking architecture and grand style, the Biltmore has played a key role in shaping the region’s history, from luxury tourism to community events. Both landmarks continue to attract visitors and serve as reminders of Miami’s rich cultural tapestry.

Smaller counties also boast historic treasures that highlight their local character. Lancaster County, Pennsylvania, showcases its agricultural heritage with its iconic historic barns. These barns, with their handcrafted beams and charming designs, are as practical as they are beautiful. Over in Marin County, California, Frank Lloyd Wright’s Marin County Civic Center blends sleek modernist design with the natural landscape, creating a one-of-a-kind masterpiece. 

Honoring the Past, Inspiring the Future

Every brick, every worn wooden floor, every intricate detail in a historic building holds a story—one of resilience, craftsmanship, and the lives that have passed through its doors. These buildings are more than structures; they are the heartbeat of our communities, standing as quiet witnesses to history, reminding us of who we are and where we come from.

But preservation isn’t just about looking back—it’s about moving forward with intention. When we protect these spaces, we’re not just saving old walls; we’re preserving memories, identity, and the unique spirit of a place. We’re ensuring that future generations can walk through the same streets, touch the same walls, and feel the same sense of wonder and connection that we do today.

The responsibility to safeguard these treasures belongs to all of us. Whether you’re a historian, an architect, a homeowner, or simply someone who loves the charm of the past, your voice and actions matter. Because in the end, history isn’t just something we read about—it’s something we live in, cherish, and pass on.

What stories will we choose to preserve for those who come after us?

© 2025 Eastern Engineering Group wrote and published this article. All rights reserved.