The long-awaited final chapter of the Sun Valley redevelopment is moving from paper to pavement. New site plans filed for the corner of South Federal Boulevard and West Dartmouth Avenue signal the start of construction on the seventh and last building in the decade-long project.

This filing represents a critical pivot for the neighborhood, which has seen 94% of its housing stock replaced or renovated under the Sun Valley initiative. The move transforms a once-industrial pocket into a dense, mixed-use community, capping a massive public investment aimed at stabilizing one of Denver's most historically marginalized areas.

The permit activity, recorded in the 80201 ZIP code, confirms the DHA's strategy to integrate retail and arts components alongside residential units. This final building is the culmination of 479 licenses and permits filed by the Denver Housing Authority in a single quarter, a bureaucratic surge that mirrors a citywide trend of accelerated construction timelines. Unlike previous phases that focused on individual lot-by-lot renovations, this final phase aims to complete the neighborhood's infrastructure in one coordinated push.

The intensity of this development is reflected in the broader data for the 80201 area, where site-plan reviews jumped to 3,565 in the first quarter of 2026—nearly triple the historical average. This surge runs parallel to other major projects nearby, including the $950 million health center replacement on Federal Boulevard that broke ground in March. As the final residential structure rises, the neighborhood faces the challenge of balancing rapid construction speed with community stability and safety.

Residents can review the specific site plans and construction details through the Denver city portal to track the progress of this final phase. The approval of these plans will determine the final footprint of the Sun Valley project and set the stage for the neighborhood's future as a permanent mixed-use hub.