Historic Preservation
Treatment Plans (HPTP)

Treeline Construction has extensive experience preparing Historic Preservation Treatment Plans (HPTPs) for federal and state agencies, including the National Park Service. These documents serve as the foundation for preservation work in sensitive or historically significant settings—defining treatment approaches, materials, and methods that protect a structure’s integrity while meeting agency and regulatory standards.

​

Our team brings decades of field experience and a clear understanding of federal preservation guidelines, including the Secretary of the Interior’s Standards for the Treatment of Historic Properties. We’ve developed numerous HPTPs that have been reviewed and approved by the NPS, reflecting our ability to interpret project intent, document existing conditions, and propose treatment strategies that balance preservation priorities with practical constructibility.

​

From historic stabilization and selective replacement to full rehabilitation, Treeline’s HPTPs clearly communicate the “why” and “how” behind each intervention—bridging the gap between preservation theory and on-site execution.

​

Our proven track record in delivering government-accepted HPTPs ensures that every plan we produce supports compliance, protects cultural value, and sets the stage for successful preservation outcomes.

Contact us to discuss pricing based on your project’s HPTP needs.