A riverside walkway would be built around the grounds of a Grade II-listed former convent as part of plans to create about 100 new homes at the site.
Nazareth House and its grounds, in Richmond Road, Isleworth, were sold last October to developer St James by religious order the Sisters of Nazareth.
St James has now teamed up with Beechcroft Developments to produce proposals for the 7.8 acre site, which previously housed a convent and care home but has lain empty for more than a decade.
They want to turn Nazareth House and other listed buildings in the grounds into apartments, and to build family homes and affordable acommodation for people needing extra care.
All the listed buildings and many of the trees on the site would be retained, and an extended riverside walkway would be created around the perimeter, linking Herons Place to the north with Richmond Road to the south-west.
A public exhibition about the proposals, which developers claim will give the site a 'new lease of life', will be held at Isleworth Congregational Church Hall, in Twickenham Road, Isleworth, next Friday (January 31), from 3pm to 7pm, and Saturday (February 1), between 10am and 2pm.
Feedback from the meeting and the scheme website www.isleworthhouseconsultation.co.uk will be used to produce a final set of plans, which is due to be submitted to Hounslow Council later this year.
Nazareth House, a white stuccoed building also known as Isleworth House and the White House, was originally built for George III's physician. The chapel and gatehouse within its grounds are also Grade II-listed.
The Sisters of Nazareth, who occupied the site for more than a century, were granted permission in 2008 to build 120 retirement homes and a 30-bed care home there, though work never began.