Looks like demolition time for 391 14th Street. The brick and wood frame house is located across the street from the Park Slope Armory Sports Facility between 7th and 8th Avenues.
This is a strange property. The house itself is only 23' deep. The dimensions of the lot are 25' x 100'. At sometime (1940?) in the life of this little house a driveway pass through was carved out of the cellar to allow parking in the rear yard.
The R6B zoning allows for a 5 story or 50' tall building. Depending on the front and rear set backs they still might be able to keep their curb cut and garage space. No building permits up yet.