FAR 52.219-3
Notice of HUBZone Set-Aside or Sole-Source Award
What it says
Restricts competition to certified HUBZone small business concerns. Requires the awardee to comply with HUBZone program requirements including the applicable limitations on subcontracting.
Why it matters on DIBBS
HUBZone set-asides typically draw very thin competition on DIBBS. If you hold the certification, filter for these — they are among the highest-probability wins available.