The Vision

This is an opportunity to…

Program Elements


This area will become an additional employment center that will expand and diversify the Dayton economy with a focus on multi-tenant research, technology and innovation uses.

Community Uses

The site will integrate community services and facilities and a range of neighborhood amenities such as connections to the bikeway network and riverfront, access to fresh food, and unique public gathering spaces.


The site will feature mixed income housing that supports an integrated neighborhood with opportunities for the district’s workforce to live close to work, supporting the principle of sustainable healthy environments.

Catalytic Buildings

A catalytic building, supported by each of the partners, serves as an anchor for the initial phase of development of the district and shows momentum. The building would reflect the interest and needs of each institution.


Greenspace is integrated into the site through urban agriculture and infrastructure such as raingardens. As development progresses, some greenspace will be replaced by rooftop gardens and vertical urban agriculture.


The retail strategy is to promote an active first floor. The desire is for local-based retail that is supportive of the neighborhood as the primary objective. It is not intended to be a retail destination.

Initial Phase

At 38 acres, the onMain site is large. The partners are committed to working with partners as well as moving at a deliberate pace to realize the vision given the local economic conditions. It could take 10+ years before this phase is realized.

Continued development will:

  • Progress along Stewart Street, then move from the edges inward
  • Begin with the catalytic building at Main and Stewart streets
  • Connect the Roundhouse to Main Street with greenspace and events plaza
  • Provide a high-quality public realm and community space
  • Feature urban agriculture on land at the western edge of the site
Start along Main and Stewart streets, creating a critical mass of activity with a mix of employment, housing, retail and supportive community uses
Establish core infrastructure (streets, utilities)
Stabilize the Roundhouse
Provide a high-quality public realm and community space
Feature urban agriculture on land at the western edge of the site
Example of a catalytic building


Buildout of the site could follow several scenarios depending on identification of partners, strategic investments, market demand and early design decisions. Realizing the build out will take time and is determined by the rate of success of the initial phase.

Development buildout will:

  • Depend on key strategic partnerships with investors and institutions who desire to be on the site
  • Respond to institutional needs, strategic priorities and market opportunities
  • Maintain a high-quality design and active public realm
  • Integrate emerging technology and wellness
Canal Park, an extension of the green infrastructure network
Structure parking with more than 2,000 spaces
Up to 1,200 residential units
Continue to create active streetscapes and public realm. New mobility technology to connect key destinations.
Urban agriculture infrastructure relocates to building rooftops and walls.

Actions Underway

The following priorities are being undertaken to advance the vision.

  • Establishing not-for-profit development organization to manage implementation
  • Initiating more detailed design and engineering of the site
  • Pursuing grant opportunities and investment to facilitate implementation
  • Programming a catalytic building to initiate development
  • Drafting an approach to supplier diversity procurement
  • Preparing a communication plan to inform the community of progress
  • Preparing a Community Involvement Plan to establish opportunities for engagement