The late Bill Dargue gives us this history which clarifies some of the background to the site. From manor house, to farmhouse, to Anglican convent and orphanage, to convent of Incarnation, and finally to hub for collaboration between faith interests:
Take a look at Little Bromwich Hall.
At the junction of Alum Rock Road and Moat House Road stands Little Bromwich Hall, the former manor house. The original hall was built here within a moat probably during the 13th or 14th century, though no visible trace of a moat survives. By the 18th century the hall had been rebuilt and was a substantial farmhouse.
It was still known as the Moat House in 1911 when it was converted into an Anglican convent of the Society of the Incarnation of the Eternal Son, a religious order which ran orphanages for boys. A small chapel was built the following year and a small cemetery for members of the order.
After 1959 a new order took over the premises, which are now known as St John's House or the Convent of the Incarnation. Part of the 18th century building survives and is Grade II Listed, though most of the neo-Georgian buildings as seen date from the 20th century. By 2015 the number of nuns at the convent had dropped to five and the building was sold with the sisters moving to premises in Marston Green. St John's House is now St John’s House is the home of a local collaborative initiative, bringing together existing projects and partnering with local churches, charities and other faith groups.
The estate of Little Bromwich first appears in a court case in 1262 in which Thomas de Bromwych sued Robert de Bromwych for the title to the land, his claim based on his descent from Guy de Bromwych who had held it about one hundred years earlier. These Bromwyches derive their surname from Castle Bromwich. John Brandwood was lord of the manor in 1512 and (another?) John Brandwood was lord in 1586. The estate stayed in the family until 1788 when the manor was held by Jane Brandwood. She was succeeded by William Ward in 1797. In 1868 when his estates at Treaford Hall and Alum Rock/ Little Bromwich were sold, it seems that any manorial rights were either lost or had lapsed. By 1658 the name Ward End had probably taken over from Little Bromwich as the name of the manor.