Amid the  government shutdown, rates on 30-year fixed-rate mortgages averaged 4.23 percent with an average point of 0.7 for the week ending Oct. 10, up from 4.22 percent last week and 3.39 percent a year ago, according to Freddie Mac’s latest Primary Mortgage Market Survey.

Rates on 15-year fixed-rate mortgages, five-year Treasury-indexed hybrid adjustable-rate mortgage (ARM) loans and one-year Treasury-indexed ARMs also increased slightly.