Kensington and Chelsea Council has applied to its own planning department for permission to carry out works at the Leighton House Museum in Holland Park Road, West Kensington.
It wants to rejuvenate the historic interiors of the Grade II* listed by recreating original decorative schemes in the iconic 19th-century building - which is the former studio and home of Victorian artist Lord Frederic Leighton.
Careful conservation work will also take place to protect the fabrics which form the furnishings of the museum.
The heating, ventilation and lighting installations will be renewed to meet modern museum standards. Security and fire protection will be upgraded and visitor toilets will be improved.
A public consultation about the project starts today and ends on September 26. Kensington and Chelsea Council hopes to make decision on the application by October 15.