The HPO website includes a chart of DC historic districts that are eligible to participate in the HPO historic homeowner grant program.
The “Bloomingdale Historic District Targeted Historic Preservation Assistance Amendment Act of 2020” introduced by the DC Council, signed by the Mayor, passed Congressional review became effective on Wednesday, 12/23/2020. So the Bloomingdale Historic District has been eligible to participate in the grant program since 12/23/2020.
It has just been added to the HPO chart, which is copied in below.
Link to this chart: About Historic Homeowner Grants | op (dc.gov)