Historic Preservation Training Center        



National Park Service                       U.S. Department of Interior


Mailing Address:

Historic Preservation Training Center   National Park Service     4801A Urbana Pike Frederick, MD  21704

Telephone #:                  301-663-8206                  Fax #:                                301-663-8032

Regular Business Hours: 8:00 - 5:00 M-F

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  HPTC Mission Statement




The Historic Preservation Training Center (HPTC) is dedicated to the safe preservation and maintenance of national parks or partner facilities by demonstrating outstanding leadership, delivering quality preservation services, and developing educational courses that fulfill the competency requirements of Service employees in the career fields of Historic Preservation Skills, Risk Management, Maintenance, and Planning, Design, and Construction.


 HPTC History

                                   The HPTC was founded in  1977 to meet the growing demand for craft skills development for NPS employees tasked with preserving the thousands of historic structures within the National Park System.  In 1995, the Center joined the NPS Training and Development Division to become one of four NPS Training Centers.

 The HPTC is currently located in Frederick, Maryland.  The headquarters/administrative office is located within the Monocacy National Battlefield at the historic Gambrill House.

  The Shop is located in the historic Jenkins Cannery building in downtown Frederick. The HPTC staff and trainees currently total approximately 70.


































































The HPTC undertakes preservation projects throughout all 50 states and U.S. territories. From documentation of structures, to ruins stabilization, to slate roof replacement, to full restoration services, the HPTC can provide services often not available at remote sites or of such a specialized nature that managers value the coordinated efforts of preservation through one source. The projects provide hands-on experience for HPTC trainees supervised by an experienced staff. On average, over 60 preservation projects are undertaken by HPTC each fiscal year.

As part of the National Park Service, the HPTC will also develop partnerships with other Federal, State, and local agencies responsible for the stewardship of historically significant cultural resources. This teamwork approach assures flexibility in addressing unknown conditions during the work and ensures that the goals of preservation are met.

HPTC preservation services include:

  • Tightly managed projects which include comprehensive cost estimates, procurement of materials, and on-site project supervision

  • In-house architectural condition assessment by registered architects

  • Construction Project Management

  • Cross training for on-site staff

  • Project Record of Treatment as documentation of work for the future

As a result of over 1000 completed projects, the HPTC has become a leader in historic preservation and is recognized by our clients for quality preservation skills training and craftsmanship.

HPTC FY12 Featured Project

On Tuesday, December 13, 2011, the Historic Preservation Training Center (HPTC) conducted a Final Inspection that marked the completion of a seven year project to rehabilitate Araby, the historic Thomas House, for use as the headquarters for the Monocacy National Battlefield in Frederick, Maryland.  Araby was constructed sometime in the last quarter of the 18th century and is one of the battlefield’s most significant structures.  Some of the most intense fighting during  the July 9, 1864 Battle of Monocacy occurred on the Thomas (Araby) Farm, and the house and surrounding landscape sustained significant battle damage.  The Preferred Alternative of Monocacy National Battlefield’s General Management Plan called for the Thomas House to be adaptively reused as the battlefield’s administrative headquarters.

The goals of the Araby rehabilitation project were to maximize retention of historic fabric by extending the durability of both exterior and interior elements by repair rather than replacement, and to apply principals of sustainability to all the new building systems and features that were installed to support the adaptive re-use use of the building from a domestic use to a function as the park administrative office.  The HPTC provided construction services from all three of our trades teams and the Architecture Team and project management Teams provide both Project and Construction Management services for the project. For cost reasons, the HPTC client park  elected not to pursue a LEEDTM rating for this project.

 A new ground sourced geothermal heating and cooling system was designed for the building and the mechanical equipment for the system was installed in the basement. Solar powered exterior lighting, use of appliances that exceed Energy Star ratings, installation of LED lighting, water conserving fixtures, low VOC paints, and recycled content carpeting were among some of the sustainable features that were selected by the NPS for the rehabilitation of the historic house.

Actual repair work began in 2004 when HPTC crews stabilized  the rear porch and this initial component was followed over the next seven years by an additional twelve components all completed by HPTC teams that addressed repairs to the  roof, foundation, windows, doors , exterior masonry, and all interior finishes. The planning for future work commenced with a Historic American Buildings Survey (HABS) team documenting the structure in 2005. A Historic Structure Report was prepared by the HPTC Architectural Team in cooperation with Monocacy National Battlefield Cultural Resource staff and was published in 2010. The design for the installation of building systems was supplied by Beyer Blinder Belle, Architects & Planners LLP and was completed in 2009.  The new building systems were installed by the Christman Company through a construction contract managed by the HPTC that was completed in the spring of 2011. HPTC craftsman completed repairs of the interior features in the first quarter of FY2012.

The architects were extremely skillful at integrating sustainable design technology and equipment into the rehabilitation design and the systems installation contractor had extensive experience and expertise with introducing mechanical equipment and systems into historic structures.  During the design phase for the Thomas House, HPTC craftspeople made significant  contributions by suggesting  alternatives to avoid cutting into original fabric such as the walls to bury wires and fire suppression pipes as originally proposed by the sub-contractors.  The voice of the craftsmen and the park client elevated concern about fabric preservation and the design team successfully responded when installing new MEP systems in a manner that minimize major fabric interventions.  Reversible techniques that favored false ceilings, chases in corner closets, and surface mounted wire moldings were employed.  We at the HPTC are proud of this project and feel that the results of the dynamic collaborations forged during this project produced results that are subtle yet stunning in their simplicity. 

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Preservation Services