PLANO, TEXAS — Ryan Cos. has broken ground on Ryan Tower, a 409,000-square-foot office building within the Legacy West mixed-use development in Plano. Global tax firm Ryan LLC plans to occupy about half of the 23-story building as its new headquarters, and the Minneapolis-based developer has engaged JLL to market the remaining space for lease. ACORE Capital provided construction financing for the project, which Ryan Cos. is developing in a joint venture with the real estate investment arm of Kansas-based conglomerate Koch Industries. Amenities will include a fitness center, multiple conference rooms, tenant lounge and a café. Gensler is the project architect. Construction is slated for a third-quarter 2024 completion.