The Fenty administration on Wednesday finally committed to spend upward of $1 million to build structural supports into the new Tenley-Friendship Library that would allow for residential development atop the branch.

The added supports are vocally opposed by neighborhood leaders who fear a residential tower would steal a significant amount of already-limited green space from the adjacent Janney Elementary School. They are widely backed by smart-growth advocates who want to see transit-oriented development on the prime site at Wisconsin Avenue and Albemarle Street, steps from the Tenleytown Metro Station.