San Diego saw 1,735 completed foreclosures in the year ending in May, down about 4 percent from 1,809 the year before, as foreclosures dropped sharply nationwide, according to data from CoreLogic.

Completed foreclosures are the number of homes actually lost to foreclosure. The number fell 19.2 percent across the country to 41,000 from 51,000.

About 0.4 of San Diego homes with mortgages made up the area’s foreclosure inventory, a relatively minor dip from 2014. The serious delinquency rate in San Diego and Carlsbad, or mortgages that are at least 90 days past due, fell 0.4 percent to 1.5 percent of the area’s mortgaged homes.

Nationwide, 1.3 million mortgages, or 3.5 percent of mortgages, were in serious delinquency. That is a nearly 23 percent drop from last year and the lowest serious delinquency rate since early 2008.

Tampa had the most completed foreclosures this year at 17,044, down from 18,857. Its serious delinquency rate was 7.4 percent.