Census geocode maps to the corner: 
Interpolated Longitude (X) Coordinates: -77.0337119111732
Interpolated Latitude (Y) Coordinates: 38.90269598027837

https://geocoding.geo.census.gov/geocoder/locations/onelineaddress?address=1010%20Vermont%20Avenue%20NW%2C%20Washington%2C%20District%20of%20Columbia&benchmark=4 