DALLAS, April 2, 2019 /PRNewswire/ -- Considered one of the best bets in commercial real estate investments, the medical office building (MOB) sector is staying healthy as a result of an industry trend to lower healthcare property operating costs and other factors driving demand for these facilities, according to BBG, a leading national commercial real estate valuation, advisory and assessment firm. The number of MOBs expanded about 50 percent to approximately 41,000 nationwide from 2005 to 2016, according to a recently released report on this fast-growing commercial real estate sector.