The City of San Diego is hosting a Scoping Meeting for the proposed 3Roots San Diego development on Wednesday, May 23, 6:30 pm at the Mira Mesa Library, 8405 New Salem St. Public comments received at the Scoping Meeting will be evaluated in the Environmental Impact Report for the project. The project website is:, and the property is being developed by Mesa Canyon Community Partners, a partnership of Shea Homes and Lennar Homes.

From their website: “3Roots San Diego is an innovative vision in Mira Mesa, in the heart of San Diego, CA. Rooted in local heritage, responsible planning and connectivity, 3Roots San Diego will transform the former Hanson Aggregates Carroll Canyon mine into a connected, mixed-use community and will provide a range of housing for all life stages which are proximate to regional job centers. Consistent with the approved 1994 Carroll Canyon Master Plan, 3Roots San Diego will be a welcoming and inclusive neighborhood, complete with parks, trails, a restored natural creek, neighborhood-serving retail, multimodal transit options, and hundreds of acres of open space.

3Roots San Diego is located east of Camino Santa Fe and south of Mira Mesa Blvd. The property is 413-acres, of which 218 acres were part of an active quarry previously owned and operated by Hanson Aggregates for nearly 25 years. Active material extraction ceased in 2016 and reclamation efforts are ongoing.

Directly to the east is a second, unrelated, active aggregate quarry operation owned and operated by Vulcan Materials; the 270-acre site is proposed for future mixed-use development.

Nested within the Mira Mesa Community Plan is the approved Carroll Canyon Master Plan. *The first phase of the Carroll Canyon Master Plan included the 900,000 sq. ft. employment center known as Fenton Technology Park. 3Roots San Diego is the second phase and completes the Master Plan.

The planned 1,800 residential units, including 10% affordable on-site rental opportunities, include a variety of housing options; from small lot, single family detached homes to attached homes and rental apartments. These new homes will be supported by 160,000 sq. ft. of neighborhood-serving commercial uses, such as restaurants, retail and lifestyle amenities, and provides much needed housing for the City of San Diego proximate to regional job centers of Sorrento Valley, UTC and MCAS Miramar.”