Bethesda sits right next to NIH and Walter Reed National Military Medical Center, and the neighborhoods around Kenwood and Edgemoor are full of brick colonials from the 1930s through 1950s that have been through at least one round of renovation already. Owners here tend to want a higher finish level, custom cabinetry, stone counters, tile work that looks like it belongs in a design magazine.
The Capital Crescent Trail cuts through town and property values along it have pushed a lot of full kitchen and bathroom overhauls rather than partial updates. We also see demand for medical office buildouts given how many private practices and specialty clinics cluster around the hospital corridor, and those projects come with their own code and infection control requirements that a standard office space doesn't.