Flemish bond is a pattern of laying bricks in which headers (the short side of a brick facing out) and stretchers (the long side of the brick facing out) alternate in every row.
Flemish bond fell out of fashion in about 1830, and because of this, its occurrence provides a clue to a building's age. If the bricks are laid in Flemish bond, it is usually an indication that the building was built before 1830.
The brick pattern on this building in the 200 block of Warren Street is Flemish bond, providing evidence that the building dates from the earliest decades of the 19th century. Other features of the house support that assumption.
The brick pattern of this house in the first block of Warren Street is also Flemish bond. This house was built in 1810, very likely by one of the sons of the Proprietors.
But in Hudson there are two known exceptions (there may be others) to the Flemish bond rule--one prominent, the other obscure. The prominent exception is the post office, built in 1909, with brick laid up in the Flemish bond pattern.
The obscure exception is this house on the 200 block of Allen Street, built in 1867, which also--unusual for the period--has the brick laid in Flemish bond.
The first occupant of this house was William Power. The house may have been built for him, and if so, he would certainly have had an influence on its design. Both the brickwork and the almost Moorish windows hint at someone with a flair for the unusual, and this notice, which appeared in the Daily Register on September 23, 1869, suggests that Power was such a man.