Alterations (HISA) Program helps pay for home. improvements necessary to ensure continuation. of medical treatment or to provide access to the. home and essential lavatory and sanitary facilities. The VA will pay a lifetime benefit up to $4,100 for. home alterations for a veteran being treated for a. service-connected disability and a lifetime benefit. up to $2,100 for other veterans. Some alterations. chargeable to the cost limitations include – but. are not limited to – roll-in showers, permanent.