Question: when was white house built and by whom

title: White House
text: Construction of the White House began with the laying of the cornerstone on October 13 , 1792 , although there was no formal ceremony . The main residence , as well as foundations of the house , were built largely by enslaved and free African - American laborers , as well as employed Europeans . Much of the other work on the house was performed by immigrants , many not yet with citizenship . The sandstone walls were erected by Scottish immigrants , employed by Hoban , as were the high - relief rose and garland decorations above the north entrance and the `` fish scale '' pattern beneath the pediments of the window hoods . There are conflicting claims as to where the sandstone used in the construction of the White House originated . Some reports suggest sandstone from the Croatian island of Brač ( specifically the Pučišća querry whose stone was used to build the ancient Roman palace of Emperor Diocletian ) was used in the original construction of the building , contrarily researchers believe limestone from the island was used in the 1902 renovations and not the original construction . Others suggest the original sandstone simply came from Aquia Creek in Stafford County , Virginia , as importing the stone would be too costly . The initial construction took place over a period of eight years , at a reported cost of $232,371.83 ( equal to $3,350,711 today ) . Although not yet completed , the White House was ready for occupancy circa November 1 , 1800 . 

Answer: answer: Construction of the White House began with the laying of the cornerstone on October 13, 1792, although not yet completed, the White House was ready for occupancy circa November 1, 1800.  The main residence, as well as foundations of the house, were built largely by enslaved and free African - American laborers, as well as employed Europeans.  Much of the other work on the house was performed by immigrants, many not yet with citizenship.  The sandstone walls were erected by Scottish immigrants, employed by Hoban.