Regency
The last Georgian phase, roughly 1795 to 1837: stucco over brick, cast iron balconies, and classical detail thinned and stretched.
Subsumed under `georgian` because it genuinely is one - a Regency interior IS a Georgian-era interior, which is what `broaderTermId` asserts and what makes this one of the few legitimate parents on this axis. The Regency proper is only 1811-1820; the trade uses the wider bracket, and this term follows the trade.