|Architect||John Kimball, Sr.|
|Governing body||Private (Portland Museum of Art)|
|NRHP Reference #||70000073|
|Added to NRHP||March 5, 1970|
|Designated NHL||December 30, 1970|
Constructed in 1800-1801 for shipping magnate Major Hugh McLellan, the brick mansion was designed by John Kimball, Sr. (1758-1831), an architect/housewright originally from Ipswich, Massachusetts. The cost was $20,000. After a change of owners, the property was purchased in 1880 by Lorenzo De Medici Sweat. In 1908, his widow bequeathed it to the Portland Society of Art (now Portland Museum of Art). The L. D. M. Sweat Memorial Galleries, designed by John Calvin Stevens, were added in 1911 behind the house, to which they connected by corridor.
In 1957, two mantelpieces salvaged from the 1805 Commodore Edward Preble House, designed by Alexander Parris, replaced originals lost during a Greek Revival remodeling of the drawing and dining rooms. In 1970, the house was added to the National Historic Register as a National Historic Landmark. The Charles Shipman Payson Building by Henry N. Cobb of Pei, Cobb, Freed & Partners opened in 1983, extending the length of the museum to its new entrance on Congress Square Plaza. After an extensive restoration, The McLellan House reopened in 2002.