The Orange County Development Briefing from September 20, 2011, presented updates on residential and commercial real estate markets, indicating fluctuations in sales, inventory, and days on the market, with some positive trends noted in the latter part of the year. The retail market exhibited an overall vacancy rate of 8.31%, with various developments and projects ongoing in the area, including potential grocery and retail spaces. Several new construction projects and research developments were also highlighted, signifying ongoing growth and investment in Orange County.