Tappan was succeeded in 1863 by Erastus Otis Haven, who added a single-story kitchen to the house, as well as a third story.

[4] Haven was succeeded in 1871 by James Burrill Angell, who had made his acceptance of the post conditional on refurbishment of the President's House.

During Angell's tenure, the President's House was substantially altered by adding a west wing containing a semi-circular library and more bedrooms.

[2] After former President Mark Schlissel was dismissed in early 2022 for an inappropriate relationship with a subordinate, the university regents voted to allocate $15 million to address deferred maintenance at the house, expand the upstairs living quarters, and make the building ADA compliant.

[5] The President's House is a three-story Italianate structure, with numerous wing additions to the original central mass.