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When it comes to cultural resources management, proven expertise is key. We’re pleased to share the recent addition of three qualified professionals in California to help you navigate regulatory obligations, design a project in a historic district, or mitigate impacts to a historic resource. Debi Howell-Ardila, Garret Root, and Dan Herrick bring decades of experience in historic preservation, preservation planning, architectural history, and history support. All three meet and exceed the Secretary of Interior’s professional qualification standards for architectural history and history. Their experience and expertise complement our broader cultural resources team across California and the west.

Please let us know if you’d like to discuss how SWCA can support:

  • Preparing environmental compliance studies and documentation in support of Section 106 and 110 of the National Historic Preservation Act (NHPA), the National Environmental Policy Act (NEPA), the California Environmental Quality Act (CEQA), and California Public Resource Code Sections 5024 and 5024.5
  • Assisting in the development of master and general plans, preservation ordinances, design guidelines, and evaluation criteria for local agencies.
  • Providing historic design consultation services per the Secretary of the Interior’s Treatment Standards for the treatment of Historic Properties for rehabilitation projects, as well as in-fill construction within historic districts or cultural landscapes
  • Exploring and capturing historic preservation-related funding sources for rehabilitation and repair projects through available incentives, including Federal and State Rehabilitation Tax Credits, Mills Act applications, and a variety of federal, state, and local grant programs
  • Developing and implementing innovative, useful, and forward-thinking solutions for mitigation and documentation of historic resources.

Debi, Garret, and Dan join a nationwide team of experienced architectural historians and preservation professionals. Learn more about SWCA’s Cultural Resources practice.


Debi Howell-Ardila, MHP

Debi [dot] Howell [at] swca [dot] comCo-leading SWCA’s architectural history practice in California, Debi Howell-Ardila is an award-winning historic preservation professional with over 16 years of experience in environmental compliance, historic resource analysis, and preservation practice and policy. She has led site investigations and evaluations for thousands of properties throughout California, with a focus on the San Francisco Bay Area and Southern California. For Southern California work, contact Debi at debi [dot] howell [at] swca [dot] com (Debi[dot]Howell[at]swca[dot]com).


Garret Root, MA

garret [dot] root [at] swca [dot] comGarret Root co-leads SWCA’s architectural history practice in California and has 13 years of experience in architectural history, research, and regulatory compliance relating to the built environment. He has extensive knowledge in all facets of project development, including methodology development and area of potential effects (APE) development, research, intensive survey, field recordation and management, report documentation, and agency review. Over his career, he has documented thousands of properties across the west for a variety of Federal, State, and Local clients. For Northern California work, contact Garret at garret [dot] root [at] swca [dot] com (Garret[dot]Root[at]swca[dot]com).


Dan Herrick, MHC

Dan [dot] Herrick [at] swca [dot] comAs a practicing preservation professional in the western U.S., Dan Herrick is proficient in documenting and evaluating cultural resources and preparing Secretary of the Interior’s Standards analyses. He has completed a variety of historic preservation planning documents for projects throughout California, the Pacific Northwest, and the Great Basin region. He is also well versed in evaluating historic districts, assessing cultural landscapes, drafting design guidelines, and providing recommendations for context-sensitive infill construction projects. Contact Dan at Dan [dot] Herrick [at] swca [dot] com (Dan[dot]Herrick[at]swca[dot]com).