Richmond Hill House is set back from the street with a court. Eight Doric columns support a wooden pergola extending from the roof of the house. The façade is faced with rough limestone and has a central bay supported by Tuscan columns. The kitchen/dining room and living room are raised on the second floor. A stair from the first floor foyer leads to the upper floor. Bedrooms fill the rest of the first floor.

The living room occupies the northern half of the second floor and has windows on three sides to obtain light and views of the San Francisco Bay. A diagonal axis originates in a niche in the living room and terminates at the northwest junction of a pair of arched windows. A double oval floor pattern is distributed symmetrically along this axis and is contained by concave walls. The walls and ceiling are frescoed with a black background covered with paintings depicting themes about the passage of time. Four figural groups illustrate the myth of Persephone, indicating the cycle of the year. On the ceiling, the nine ages of man and woman are shown from conception through death. At the center of this cycle Petrolia, a twentieth century allegorical figure representing Richmond’s primary industry, gazes down at vignettes of gas stations that resemble conventional landscape shrines frescoed on the walls of Roman houses.