Highland Council said the trees were thought to be about 130 years old and have been protected by a preservation order since 2009.
Responsibility for the trees lies with the street’s residents.
A council spokesperson said anyone who had information of dangerous trees on local authority land could email Tree.Enquiries@highland.gov.uk to provide information, including photographs and locations.
Lochardil House was built in 1876 for Sir Charles Fraser-Mackintosh, a solicitor who became a town councillor and later MP.
He helped to lead work to develop Inverness’s Union Street, and also the city’s Drummond and Ballifeary areas.
He retired from politics in 1892 and died in Bournemouth in 1901.
His extensive collection of books on the history and culture of the Highlands was donated to Inverness Public Library in the 1920s.