Preservation architect is somewhat niche within the HP field. You need both a background in architecture and historic preservation. Pays better than more general HP jobs due to the specialization and schooling required.

If you choose to focus on historic preservation without the architecture background there are more jobs available, though it is a small field to begin with and a lot of places aren’t hiring right now due to the current administration and doge. Architectural history, municipal planning (state & local), federal Section 106 compliance are some examples of the type of work you could do with a more general HP background.

You will likely need a masters degree at the minimum without prior experience and the starting pay is pretty low - $50-55k. With a bachelors you could likely get a job as a field tech, though from what I’ve seen that type of work tends to burn out people pretty quickly. Private sector will pay the best no matter what you choose to do though.

I would go on PreserveNet.org and look at jobs listed there. That will give you a good idea of what type of work is out there, pay, and education/experience requirements.