According to the district's Designation Report, the four houses from 465 to 469A 1st Street were built in 1884-5 in Neo-Grec style by Brooklyn owner-architects Martin and Lee:
465-469 are pictured below; 469A, just out of the frame to the right, is identical to 469. The builders seem to have been trying out different configurations in these houses: 469 & 469A are 2-story over basement; 467 is 3-story over basement, and 465 features a full-height, two-sided V-front. Detailing, however, is similar on all of the houses:
It is likely that builders Martin & Lee erected the houses in small groups, as they did in their lots through the block on the south side of Garfield Place above 7th Avenue.
Six houses stand between 7th Avenue and the Historic District boundary on the north side of 1st Street. The Designation Report notes that these houses were "built at the same time". The statement is ambiguous: were they built at the same time as each other? Or at the same time as the adjacent houses inside the district?
A clue can be found in our comprehensive Documentary History of the Park Slope Historic District Expansion Study Area. An 1886 citation from the Brooklyn Eagle notes that builders Martin and Lee have recently completed three narrow (16') houses at the northeast corner of 7th Avenue and 1st Street:
Altogether, six identical narrow houses, all apparently by Martin and Lee, stand together between 7th Avenue and the current Historic District boundary, adjoining the four additional, stylistically similar houses by Martin and Lee within the current Historic District. The entire row was apparently built between 1884 and 1886.
But more importantly, should "development potential" be the basis for landmarking decisions? If the adjacent buildings inside the current district, stylistically identical, and erected by the same builders at the same time, are worthy of protection in a historic district, should not the rest of the row down to 7th Avenue also be protected?