Special Housing Units (SHU)

Special Housing Units (SHU) are segregated housing areas within Federal Bureau of Prisons (BOP) facilities used to separate inmates from the general population for administrative or disciplinary reasons. Every federal correctional institution maintains at least one SHU, which consists of single- and double-occupancy cells designed for heightened security and control. Inmates in the SHU are subject to restrictive conditions of confinement, limited property, and reduced out-of-cell time compared to general population.

The SHU serves three primary functions: disciplinary segregation (punishment for prohibited acts), administrative detention (temporary separation pending investigation, transfer, or protection), and protective custody (long-term separation for inmates whose safety would be at risk in general population). Conditions and privileges vary by status and facility security level, but all SHU placements are reviewed periodically under BOP policy.

Summary

Special Housing Units in federal prisons are highly restrictive housing areas separate from general population compounds. Placement occurs for disciplinary segregation following a finding of guilt by a Discipline Hearing Officer (DHO), administrative detention for investigative or protective purposes, or pre-hearing detention pending resolution of rule violations. Inmates in disciplinary segregation may serve fixed sanctions of up to 60 days per incident (longer for consecutive sanctions), while administrative detention has no fixed duration and is reviewed every seven days initially, then every 30 days thereafter.

Conditions in the SHU include single- or double-cell occupancy, handcuffing and escort by staff for all movement, limited recreation (typically one hour per day, five days per week in outdoor cages or indoor areas), and restricted access to commissary, telephone, and visitation. Property is limited to legal materials, religious items, a small number of personal photographs, and approved reading material. Meals are delivered to the cell.

The BOP reported approximately 7–10% of the federal inmate population housed in restrictive housing at any given time in recent years, with the majority in administrative detention rather than punitive segregation. Use of long-term restrictive housing has declined since implementation of reforms under the Obama administration and further reductions directed by the First Step Act and subsequent policy changes.

History

Segregated housing units have existed in federal prisons since the opening of USP Alcatraz in 1934, where “D Block” served as an early disciplinary and administrative segregation unit. The term “Special Housing Unit” was formalized in BOP policy in the 1970s and 1980s as the Bureau standardized nomenclature across facilities.

Major legal challenges shaped modern SHU policy. Litigation in the 1990s and early 2000s, particularly regarding the Control Unit at USP Marion (later ADX Florence), led to enhanced due-process requirements for long-term segregation. The 2014 Department of Justice report on restrictive housing and subsequent 2016 Presidential Memorandum directed the BOP to reduce prolonged solitary confinement, limit disciplinary segregation sanctions, and divert mentally ill inmates from the SHU when possible.

Program Statement 5270.11 (originally 5270.09), issued in 2011 and updated through 2024, incorporated these reforms by capping most disciplinary segregation at 60 days, mandating regular psychological reviews, and establishing the Special Housing Unit Review Committee process. The Secure Housing Unit (SHU) name was officially replaced with “Special Housing Unit” in policy documents to reflect the broader range of purposes beyond purely punitive segregation.

Placement Categories

Disciplinary Segregation (DS)

Ordered by a Discipline Hearing Officer as a sanction for prohibited acts (100–400 series). Maximum sanction is generally 60 days per incident, though consecutive sanctions may result in longer continuous placement. Inmates lose most privileges but retain access to legal materials and limited commissary hygiene items.

Administrative Detention (AD)

Used for inmates pending investigation, transfer, hearing, or when their presence in general population poses a threat to safety or security. Status is reviewed formally every seven days for the first 60 days, then every 30 days. Conditions are similar to DS but slightly more privileges may be authorized at the Warden’s discretion.

Protective Custody (PC)

Long-term administrative detention for inmates who would be at serious risk in general population (former law enforcement, high-profile cases, informants, or gang dropouts). Protective custody inmates are usually housed in dedicated SHU ranges or separate facilities.

Conditions of Confinement

Cells are typically 70–90 square feet and contain a concrete bunk, toilet/sink combination, small desk, and limited shelving. Lighting is controlled by staff. Recreation occurs in individual or small-group cages. Showers are usually on the range three times per week.

Property restrictions include:

• No personal clothing (inmates wear orange or khaki jumpsuits)
• Limited to ten books or magazines
• No electronics, musical instruments, or hobby craft
• Restricted commissary (hygiene items and limited food)

Mental health staff conduct rounds at least weekly; inmates with serious mental illness may be diverted to Secure Mental Health Step-Down Units rather than standard SHU.

Review and Release Procedures

Every SHU inmate receives a hearing or status review within seven days of initial placement. The Unit Discipline Committee, Warden, or Regional Director must approve extensions beyond initial periods. Inmates in continuous restrictive housing longer than 365 days receive Central Office review.

Terminology

• SHU – Special Housing Unit; the physical area and the program.
• Disciplinary Segregation (DS) – Punitive status ordered by a Discipline Hearing Officer.
• Administrative Detention (AD) – Non-punitive separation pending investigation, transfer, or protection.
• Protective Custody (PC) – Long-term AD status for inmate safety.
• Restrictive Housing – Umbrella BOP term encompassing SHU, Control Units, and other segregated placements.
• DHO – Discipline Hearing Officer; independent hearing official who imposes sanctions.
• Step-Down Program – Structured program for inmates releasing from long-term restrictive housing back to general population.

Additional Resources

• Program Statement 5270.09 – Inmate Discipline Program (PDF)
• Program Statement 541.010 – Special Housing Units (PDF, if available; otherwise consolidated in 5270 series)
• BOP Restrictive Housing Population Statistics
• Department of Justice Report on Restrictive Housing (2016)