Boca Raton's built environment is mostly a product of the postwar decades, not the 1920s land boom that gave the city its name and image. Addison Mizner's development company went bankrupt in 1927 after laying down only a fraction of its planned streets, and the city stayed small — under 1,000 people — until Florida Atlantic University (1961) and the IBM PC plant (1967-70) pulled in real population growth. Housing unit counts show the bulk of the build-out from the 1970s through the 2000s: about 20,000 housing units in 1980, growing to roughly 44,500 by 2010 and near 49,000 by 2020. So a typical Boca Raton roof call is on a 1970s-90s tile or shingle roof, not a historic one, even though the city's downtown image is Mediterranean Revival.
Barrel and flat concrete tile dominates west of Federal Highway, on both the older ranch-style stock and the newer construction pushing out toward the Turnpike. Failure points are the usual tile issues — cracked or slipped tiles after wind events, worn underlayment reaching the end of its service life under an intact-looking tile field, and valley and penetration flashing that was never detailed well the first time. Closer to the coast and around the older FAU-adjacent neighborhoods you'll find more asphalt shingle and some built-up or modified bitumen on flat-roofed additions, which age differently and need their own inspection approach.
Boca Raton is HOA territory — a large share of the city's housing sits inside planned communities with architectural review committees that have their own rules about tile color, profile and manufacturer, on top of whatever the city requires. That adds a step before work starts: getting the HOA's sign-off alongside the building permit. The one true wrinkle is the Old Floresta Historic District near downtown, locally designated since 1990 and listed on the National Register, where exterior changes — including roofing — go through the city's Historic Preservation Board for a Certificate of Appropriateness before a permit is pulled. Everywhere else in the city, it's a standard Florida Building Code permit, no historic review involved.