This small church shows its architectural kinship to the nearby Sea and Land Church in that both, though basically Georgian, boast Gothic windows, a sophistication derived from English precedent, perhaps from the Battey Langley's books. Small stones were used here as at Saint Paul's Chapel, and, although ashlar quoins were omitted, the window openings have been reinforced with brick frames. The spire was apparently not completed above the stonework, as the wooden spire would seem to date from a much later period.

Between 1954 and 1957, the Municipal Art Society surveyed historic buildings in all five boroughs to create a database of potential landmarks to preserve. Local residents and MAS staff compiled individual sheets devoted to about 200 buildings. Each sheet outlined the building’s date, location, and style and provided a description and a small photograph. This is the list of Manhattan buildings.

Among its important qualities, Saint Augustine’s Chapel is a fine example of the small, masonry parish church. It displays an unusual and interesting feature in the introduction of Gothic windows into a building which, in general, adheres to the Georgian tradition of architecture. This church served for many years as the very attractive Chapel for a small section of the urban community.