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Master Plan

onMain is designed as an integral part of the city and adjacent neighborhood. It will bring new life and activity to the site and welcome residents, employees, neighbors and visitors every day of the year.

Plan Overview

The initial phase begins along Stewart Street and Main streets, moving west and north and continues to complete the Stewart Street frontage and the development of Canal Park. To catalyze development activity, an employment-oriented building called the Think Dayton building is envisioned at Stewart and Main Street and the first residential building will be developed along Main Street. After the initial phase, market conditions and being responsive to opportunities will ultimately drive the phasing and timing for the build out of the site.

In essence, onMain will be a model environment to nurture innovation. Brookings Institute defines innovation districts as “geographic areas where leading-edge anchor institutions and companies cluster and connect with startups, business incubators and accelerators. Districts are also physically compact, transit-accessible, and offer mixed-use housing, office and retail.

  • The site will better connect to its surroundings with new streetscapes, public transportation and recreational trail.
  • The Roundhouse will be reanimated as a distinguishing feature that bridges together the site’s history and innovative future.
  • The shared street parallel to Main Street will be a unique space that provides a view corridor and a safe, pedestrian friendly public realm.
  • Main Street will become a safe and pedestrian-friendly environment that connects to onMain and its local surroundings.
View Master Plan

The master plan was based upon on an original vision for the site which was developed in 2018. The vision was informed by both technical analysis and the intuitive insight of individuals, community groups and other stakeholders. Over 850 people were engaged offering ideas, feedback and comments during the visioning process. View the original Vision Report.

Engagement Process

Community engagement and input that began during the Visioning process continued to be important in the development of the Master Plan. The first public meeting  introduced the site design and engineering work needed to realize the vision. Participants were able to provide feedback on the plans and ideas for the public realm, open spaces and streets being designed within the development. The conversation continued at a second public meeting, this time centered around how the private development might take shape. Conversation and feedback centered around how the development can create a setting that connects people, and creates a density of ideas, activity and collaboration.