The present "Exectutive Mansion" for Pennsylvania's Governor located in Harrisburg doesn't have much of a history having been purpose built in 1968-69.
However....
Prior to construction of this unique and versatile residence in 1968, gubernatorial homes either were bought privately by individual governors or purchased by the Commonwealth. The only other Pennsylvania governor to have a home specifically constructed for the purpose of housing the chief executive and providing space for conducting the affairs of the Commonwealth was Johan Printz, the Swedish Colonial Governor (1643-1653). He erected a home of imported yellow Stockholm brick and native Pennsylvania white cedar logs on Tinicum Island in the Delaware River and named it "Printz Hof." Over the following three centuries, time, tide and Man turned the island into part of the mainland and no remnants of the structure remain.
The tradition of a governor selecting and purchasing his own residence dates back to 1682, when Provincial Governor William Penn built a superb private home, "Pennsbury Manor," in Bucks County.
Pennsbury Manor was built by William Penn in 1683-1699 and is a beautiful place to visit:
Pennsbury Photo Gallery (http://www.pennsburymanor.org/Photos.html - broken link)
The customary establishment of residence continued through the relocation of the State Capitol from Philadelphia to Lancaster in 1799, and from Lancaster to Harrisburg in 1812.
The first governor to lead the state from its new capitol of Harrisburg, Governor William Findley (1817-1820), bought a property at 21 N. Front Street, which presently houses the Art Association of Harrisburg (see photo at left). Governor Findley's successor, Joseph Heister (1820-1823), also purchased the 21 N. Front Street home, presumably from Findley. Another Front Street home was purchased during the administration of John A. Schulze (1823-1829). Governor Schulze resided at 27 N. Front Street, the site currently occupied by the Balaban and Balaban Law Firm.
Francis R. Shunk (1845-1848) lived at 23 N. Front Street, now the Pennsylvania Bankers Association. The building located at 223 N. Front Street that presently houses the law firm of Calkin and Campbell, shares a similar heritage as it once was the home of William Bigler (1852-1855).
The conventional practice of governor's purchasing private homes ended under the administration of James Pollack (1850-1858), who suggested that the state purchase a residence for the governor. On January 18, 1858, the legislature purchased a house on South Second Street for $11,000 (now the site of the Executive House Apartments). Shortly after its acquisition, executive staff thought that the South Second Street home was too small.
During the second term of Andrew G. Curtin (1864) the state purchased a new residence at 313 N. Front Street in exchange for the Second Street home plus $20,000. The size of this house became inadequate as well. The adjoining lot was purchased, and an identical house was built during the administration of John W. Geary (1867-1873). A brownstone facade was later constructed to unify the two structures, and the expanded residence became known as "Keystone Hall."
By the Second Term of Gifford Pinchot (1931-1935) Keystone Hall was worn and in a state of decline. In Governor Pinchot's final message to the legislature, he strongly urged the building of a new executive mansion. Arthur H. James (1939-1943) supported the idea for a new governor's residence and signed bills providing for the disposition of Keystone Hall and authorizing construction of the new building.
Due to the poor condition of Keystone Hall, James' successors spent the majority of their terms at Fort Indiantown Gap Military Reservation, located 22 miles east of Harrisburg. This lovely fieldstone residence was built in 1942 as a home for the adjutant general by Auditor General Edward Martin. Soon after, Martin was elected governor and chose to live in the home himself. Today the stone structure, known as the State House, serves as the official residence of the Lieutenant Governor.
Although Governor James permitted the sale of Keystone Hall in 1941, it wasn't until the administration of David L. Lawrence (1959-1963) that the house was sold for a bid of $85,500 to the Insurance Company of North America. The residence, which had housed 17 governors and their families, was razed and replaced with a parking lot. During the interim, between the disposition of Keystone Hall (1960) and while plans were in progress for the construction of the new executive mansion (1968), governors resided at the Fort Indiantown Gap site.