A Cleveland-based developer has a new plan for the southwest corner of High Street and Ninth Avenue that calls for a much taller building and a new-to-Columbus construction method. Harbor Bay Ventures wants to build a 15-story building on the site…. Dan Whalen, VP of Design and Development for Harbor Bay Ventures, said that the company anticipates utilizing mass timber for the building’s structure, a construction material that has a lower carbon footprint than concrete or steel and has grown increasingly popular in recent years. Harbor Bay has used mass timber in other projects, including Intro Cleveland, a nine-story mixed-use development that the developer calls the largest mass timber-framed residential building in the country.