The Traditional Trades Advancement Program is run by the National Park Service and its Historic Preservation Training Center, located in Frederick, MD. Read more about the program’s history and development:

Discover TTAP

What is TTAP?

TTAP stands for the Traditional Trades Advancement Program. The NPS created TTAP in 2018 to bolster and expand its internal preservation staff. TTAP provides hands-on, historic preservation trade skills training during an intensive twenty-week learning-while-working experience. Trainees receive project-based opportunities to learn carpentry, woodcrafting, finishing, masonry, metalworking, and window restoration while working, learning, and earning alongside professional NPS staff.


Skilled carpenters assess wood features, make recommendations for repairs, and use techniques to blend the new fabric with the old, all while documenting the work they complete.  Carpenters need a firm grasp of construction math and an understanding of structural engineering. 


Woodcrafters combine preservation carpentry with traditional woodworking to restore and replicate architectural features that include windows, doors, columns, and many other components found on and inside historic structures.  Woodcrafters need to be literate in construction math, and learn about wood science to inform their work.


A finisher applies final coats of different materials on a variety of substrates.  This includes painting, sealants, stains, and washes.  Finishers study and learn about chemistry, material science, and application techniques.  They research and recreate historic finishes. 


Preservation masons take extra steps to blend repairs with existing stone, concrete or brick. The process includes analyzing the mortar and finding appropriate materials to match mortar.  Masonry is a general categorization.  Different specialized under this umbrella can include brickwork, stonework, plastering, and tiling, among others.  Preservation masons need to be dexterous and learn material science to understand different mortars and masonry units.


Metalworkers manipulate metals into structural, functional, and decorative aspects of structures.  Metalworkers forge, weld, solder, smelt, and cast metals into roofs, monuments, beams, fencing and rails, and decorative features.  It requires extensive knowledge of metallurgy and material sciences, as well as strong technical skills to manipulate the metal.

Window Restoration

A glazier works on the glazing of fenestrations.  In layman’s terms, glaziers repair, clean, and replace the glass features on a building.  This can include standard windows and doors, as well as stained-glass elements.  It requires familiarity with multiple materials and an understanding of various operating systems.


Start Over

2022 Opportunities

The Campaign is excited to announce that recruitment is underway for the 2022 Traditional Trades Advancement Program! This program is offered through partner agreements that are a part of the the 21st Century Conservation Service Corps. As a result, this program is eligible for people between 18 and 30 years of age, and veterans between 18 and 35 years of age.

Click Here to view openings & apply

Placement & Salary

Placement National Park Service sites with open TTAP positions in spring 2022 include: – Manassas National Battlefield Park (VA) – National Capital Area (DC) – Fort McHenry National Monument & Historic Shrine and Hampton National Historic Site (MD) – Roosevelt-Vanderbilt NHS (NY) – Springfield Armory National Historic Site (MA) – Carl Sandburg Home (NC) – Gulf Islands National Seashore (FL) – Fort Larned and Nicodemus National Historic Site (KS) – Little Rock Central High School National Historic Site (AR) – San Antonio Missions National Historic Park (TX) – Colorado National Monument (CO) – Rocky Mountain National Park (CO) – New River Gorge National Park (WV) Compensation 2022 TTAP participants earn a $550 weekly stipend and are eligible to receive the Segal AmeriCorps Educational Award. Participants who complete 20 weeks or more of service receive non-competitive hiring status into the federal agencies.

How to Apply

The Associated General Contractors of America reported that 81% of contractors struggled to find qualified skilled labor in 2019.   


Historic Trades do not have special job classifications within construction.  Without this, job and career data can only be deduced from construction industries as a whole.  Industry is trying to resolve labor shortages through technology and mechanization.  However, restoration cannot be robotized.  Human discretion and tactical skills will always be needed in historic preservation projects.  America’s historic building stock increases every year, as does the value of skilled labor.  Historic trades offer job and economic security.