What has neighbors talking is the fact that the family home of Senator Frist, who is often talked about as a potential 2008 Republican presidential candidate, has taken on a resemblance to the dwelling at another high-profile address: 1600 Pennsylvania Avenue in Washington.

The similarity is so striking that George S. Buchanan, 63, a Republican-leaning neighbor whose home is separated from Mr. Frist’s 4.3-acre property by a street, said, “I live right next door to the White House.”