266 Irving Avenue is a 2 1/2 story, 3 bay, irregular plan, eclectic/Shingle style, wood frame, residential building. The c. 1910, side gable-roofed house is intersected by a front-facing clipped gable. Additional architectural ornament includes 6/1 windows, a pier-supported, shed-roofed portico, two story set back side wing, and a simple classicizing entablature.