If they owned the property and you had an address, you could find in deeds at the county courthouse or in Sanborn Insurance Maps.
http://www.lib.berkeley.edu/EART/sanbul_WA_MZ.html#
I have already researched and found the various addresses for the Davis family, the Dunham family, Obama Sr. and friends of Sr. None of them is associated with the 6085 Kalanianaole Hwy address which is listed as a 5 bedroom, 2 bathroom home 7 miles away from the addresses for any of the people I listed above. BIGLOOK, a HI Freeper has verified that the area where that house is located would cost mega money well beyond two students or even a well placed Bankoh employee and a furniture salesman. I believe grandma knew of a safe address which could be supplied for a registration of birth AND the birth announcement. She worked for the escrow department at Bankoh and by the end of 1961 was made the manager of the department.