21. The detached house was formerly the Governor's House to the prison, built around 1850. 22. The committee purchased a three-storey semi-detached house on Harrowdene Road. 23. Otherwise, the remainder of Brooklyn Heights is developed land, consisting primarily of detached housing . 24. According to the 2011 census, 99.7 percent of Glen Alpine homes were detached housing . 25. Semi-detached housing makes up the remaining ( 19 % ). 26. The building was replaced with a semi-detached house around 1950. 27. Detached housing became the popular style of housing in Australia following Federation in 1901.28. The lots usually measured 1 2, 5 acres, and were suitable for detached housing . 29. Detached housing growth remains strong in developments above the mountain.30. The average price of a detached house is over ?00, 000 as of January 2012.