The original Land Grants was issued at £1.00 per acre to William Howard and John Wright.

The land was conveyed to William Howard's son, John Howard.

Henry Ayres purchased the land at £6.7/6 per acre.

Richard Day, an early pioneer who arrived in South Australian on the "Royal Admiral" in 1838, purchased the land at £10.00 per acre, and began Days Farm. The farm stretched from Churchill Road (now the Islington Workshops) to Trafford Street, Angle Park, and included substantial parts of the now Parks Community College, Harold Tyler Reserve, Regency Park Golf Course and the Regency Park Industrial Estate. Richard Day commenced farming and dairying in the area and the Days Farm buildings were built on the land which is now Regency Golf Course.

The Government acquired 480 acres of Richard Day's farmland and the Islington Treatment Works was established.

Building commenced on the area now known as Sunnybrae Function Centre.The Cowshed (later renamed the Coach House), a substantial stone building, was used for milking and mechanical shearing. The Coach House is now used as a Wedding Reception and Function Venue.The Cheese Room, Machinery Shed and Cellars were built by Burge & Kestel and used for cheese and butter making and later as a fodder store and workshop. A breezeway ran between the Cheese Room and Machinery shed and was originally open at both ends. The farms tramway ran along the centre and the trolleys, used for general cartage, were pushed by farm labourers. This building was very unusual in that it was timber framed and clad, all of the other buildings constructed at the same time were of brick and stone. The conservation of the building has meant that the cladding has been replaced. The Cheese Room is now used as a Conference Venue while the Machinery Shed houses the Port Adelaide Enfield Council Heritage Museum.

Building continued:The Managers Residence and Dairymen's Quarters (now called the Homestead), a substantial stone house was constructed around a central courtyard (now known as The Atrium). The former Managers Residence was on the left and is now used as Sunnybrae Function Centres offices. To the right was the Dining Room which is now called the Richard Day Room and used as a Conference Venue, and the former Bunk Room, now known as the Heritage Room and is used as a Wedding Reception, Function and Conference Venue.The Stables (no longer standing) and Harness Room (now used as a display area for farming equipment) were also constructed in this year.Contractors Bacon & Brewer built the Piggeries, pig breeding on the farm ultimately proved very profitable with many varieties being bred, the Berkshires provided the best results. The Piggeries remained intact until the 1950's although by this time pig breeding had long been abandoned and the piggery had fallen into disrepair. The Piggeries have now been restored and are currently used as aviaries housing a variety of birds including peacocks, canaries and pheasants.

The Smokehouse was used for curing the bacon and ham produced from the farm pigs. In the 1950's the Smokehouse was used as a pigeon loft.

After a severe storm, major repairs were needed to the Cowshed and Stables. The barrel roof of the Cowshed was replaced with a gable roof.

Farming proved very successful, with produce including vegetables and fruit from the 18-acre orchard of oranges, apricots, peaches and pears, grass crops of rye, pannicum, sorghum, lucern, maize, mustard and mangolds and livestock such as horses, cows, sheep and pigs.

The land became too nutrient rich and was used mainly for hay cropping and animal agistment.

Bolivar Treatment Works replaced the Islington Treatment Works.

The Sunnybrae Pony Club used the farm buildings, which had become very dilapidated.

The Department of Lands, under the Crown Lands Act, gave approval for disposal of the property.

The farm area was renamed Regency Park and subdivided by the Government in four phases for light industry in 1975, 1977, 1979 and 1981.

4.5 acres' containing the old farm buildings was declared a Historic Conservation and Recreation Centre and placed under the care and control of the Enfield Council. The Council carried out restoration of the buildings with the assistance of State and Bicentennial grants.

The Rose Garden was established by the Council, patterned on an 1880's English garden, using 2 year old roses from Walter Duncan at Watervale.

Sunnybrae Farm was leased to Mr Lui Semola, who further beautified the area and established a restaurant and function centre.

The world-renowned Regency Hotel School formed a partnership with Mr Semola and now manages Sunnybrae Function Centre.

Additions and improvements including The Pavillion, Garden Terrace and extensive kitchen facilities were opened.Sunnybrae Function Centre appeared on Channel 9's "Postcards" program.

The Peppertree Gazebo was constructed, and became an instant success for wedding ceremonies, set within a grove of old pepper trees, small fountains, a running stream and a backing of old farm carts, the Peppertree Gazebo is a tranquil setting.