Robert Morris had purchased a house at…
1790 CE
When the Federal Government moves from New York in 1790, he offers his home to his friend George Washington.
Washington is familiar with the place, since he had stayed there with Morris during the Constitutional Convention.
John Adams will occupy it in turn.
Morris had initially offered his city home to Washington for free, but to avoid the appearance of improper influence, he rents the house for $1 a year to the city of Philadelphia to be used as the presidential residence.
Philadelphia is the temporary US capital from 1790–1800 during the construction of Washington, D.C..
Morris moves next door, into another house he owns on the corner of 6th and High (Market) St.