The Valuation Roll, available at
www.scotlandspeople.gov.uk, normally tells you the names of the proprietor, the tenant and if relevant the occupier.
In 1940 John Patton is listed as tenant of 84 Dumbuck Road. All the immediate neighbours are owner-occupied. The name of the owner of the rest isn't listed in the index, but the full record shows that the owner was the Ministry of Supply.
None of the houses in Dumbuck Road is listed in the 1935 Valuation Roll, so presumably the whole street was built in the later 1930s. Could the street have been built by a speculative builder and then sold to individual owners, in which case there could have been advertised in newspapers of the time?
The best way to research the history of a house is by looking in the Registers of Sasines. These are the records of transfer of ownership of land or buildings. These can be consulted in the Historic Search Room in General Register House in Edinburgh, or in printed volumes available in major reference libraries. See
https://www.ros.gov.uk/our-registers/general-register-of-sasines.