As a double house, this makes an interesting comparison with the Church-Pearce House at 25 John Street. Unlike that house and other double houses nearby at 77-79 and 101-103 Williams Street, the Armington House situates its two units back to back, not side by side. Locating the principal entrances on opposite sides of the house provides several amenities: increasing the privacy of each unit, enhancing the illusion that each is a single-family house, and creating a landscape precinct for the principal entrance.
The Armington House has all the characteristics of the Greek Revival style as built in Providence from the 1830s through the 1850s: monumental scale, broad pilaster strips that frame the corners, substantial entrance porches in the Doric order with fluted columns, broad entablature below the cornice, and the gable end on the street elevation treated as a pediment.
Armington, an accountant, insured this house for $3000 following its completion. He lived in one of the units and rented the other to William F. Foster, a mariner, like so many other early 19th-century Fox Point residents.
— 2008 Festival of Historic Houses Guidebook