The robberies have happened between the hours of 1 a.m. and 5 a.m. Police believe the suspect enters homes through open doors or windows while the residents are at home.
Wallets, purses, cash and small valuables have ben taken.
Anyone with information is urged to call the San Jose Police Department Burglary Unit at 408-277-4401 or Crime Stoppers at 408-947-STOP.
