Modular housing in going vertical in Denver. Work is expected to begin in July on a mixed-use, 24-unit project in the 4300 block of Tennyson Street. Standard stuff in Denver’s trendy Berkeley neighborhood these days, except the housing at this project will be for sale and each unit will be built in a factory in Texas, trucked up to Denver and hoisted by a crane into place atop a ground floor retail space. The Kasita on Tennyson development takes its name from the Austin, Texas-based company that designed and will prefabricate the 408-square-foot studio units.