 2026. The New Hampshire Executive Council has started plans for a new men's prison aiming to replace the aging Concord facility. The project, expected to cost over $500 million, has already secured nearly $10 million for design and engineering services. The Concord prison is set to have parts dating back to the 1800s. The process will start with a site investigation of the state-owned 300-acre land to determine the best location for the new prison to be built.