There were 49 commercial buildings under construction across Tomball and Magnolia as of Dec. 14, adding more than 3.1 million square feet of upcoming office, industrial and retail space to the market. Data shows 19,958 square feet of office space being built, 2.92 million square feet of industrial space under construction and 234,237 square feet of retail space in the works as of Dec. 14.In addition, occupancy rates were up year over year for commercial properties in Tomball and Magnolia from the fourth quarter of 2021 to Dec. 14, 2022, data shows.