At an IMN Real Estate Forum, Andy McCulloch shares his view on commercial real estate fundamentals and values from a macro perspective. Green Street sees healthy fundamentals and supply growth below long-term averages in most sectors.  Andy spoke about oil prices and the Houston property market, as well as trends in retail real estate.  According to Green Street, about 15% of malls, mainly in the C and D space, will go dark over the next 10 years.