SAN DIEGO-Although still sluggish compared to San Diego County’s industrial market, activity in the region’s R&D sector is supposed to improve by year-end, according to Burnham Real Estate researchers. New data published by Burnham puts year-to-date activity for the county’s R&D market at negative 116,465 sf, which has caused vacancy rates to slide up from last year. According to the report, vacancy has increased from 14.4% for total leasable space at year-end 2003 to a current level of 17.1%. When owner-user space is included, vacancy was 10.4% at the end of last year and is now recorded as 13.3%. Mickey Morera, a senior vice president and industrial leasing specialist with Burnham, attributes the increase in R&D vacancy levels to “corporate consolidations and a flight to class A buildings.” He tells GlobeSt.com that “it’s the lagging effect of some corporate consolidations that have occurred in 2003 and they’re finally getting around to putting space back on the market now.” Additionally, “some of the office users that were in R&D facilities for economic reasons have jumped over to true office buildings to take advantage of the concessions there.” Despite the R&D market’s overall languid state, this sector has been showing some signs of life. For the second quarter of 2004, a total of 46,839 sf of R&D space was absorbed and Morera predicts “a firming up of rents by the fourth quarter of 2004.” He also notes that “we will probably start seeing some flex, two-story, R&D/office product being constructed by some of the savvier developers starting by the fourth quarter of this year.” Already, several R&D projects are under way in the county, including Biosite’s 350,000-sf first phase of its new 800,000-sf corporate headquarters in Sorrento Mesa’s Fenton Technology Park and Biogen Idec’s 167,000-sf R&D building that is rising next to its office building in North University City.