Evidence Storage Room Design Guide for Law Enforcement
Proper evidence and property storage is one of the most critical (and scrutinized) infrastructure decisions a law enforcement agency will make. The room must protect the evidence, maintain absolute chain-of-custody, withstand audit, and still allow fast access for detectives and prosecutors.
Key Principles of Professional Evidence Room Design
- Physical security first: Use secure evidence lockers, high-security cabinets, and controlled access with audit logging wherever possible. Armory spaces often use cages or secure vaults.
- Chain of custody tracking: Design for barcoding or RFID from intake. Every movement should be loggable.
- Organization by case or type: Most agencies benefit from a division of general property and high-security controlled substances / firearms. Use color-coded zones with clear visual cues.
- Temperature and humidity control for sensitive biological and digital media. Not every space needs full climate rooms — often targeted cooled zones or cabinets are enough.
- Future expansion: Evidence never shrinks. Plan for vertical growth (high-density mobile shelving) and additional rooms that can be secured later.
Recommended Storage Solutions for Evidence Rooms
High-Security Metal Cabinets + Lockers — Primary for firearms, controlled substances, high-value items. Use single-door or multi-drawer units with heavy-gauge steel, two-person key or electronic lock solutions, and interior flexibility.
Evidence-Specific Shelving & Mobile Shelving — For general evidence boxes, bags, and property. High-density mobile shelving is a game-changer in smaller rooms (often doubles or triples capacity versus traditional stationary shelving).
Evidence Lockers for Temporary Intake — Wall-mounted or freestanding secure lockers for easy “pass-through” intake from patrol officers outside of normal admin hours.
Wire Basket / Specialty Shelving for Odd-Shaped Items — Bicycles, large bags, bulky clothing, firearms in long cases.
Real project summary — Utah County Agency, 2024-2025
We helped a medium-sized sheriff’s office move into a new evidence facility. After two design sessions, we delivered a combination of 18 high-security evidence lockers for firearms and narcotics + a high-density mobile shelving system giving over 3,600 linear feet of capacity in a 1,250 sq ft room. The project included full installation and gave them 10+ years of growth headroom.
Design Process We Use for Law Enforcement Projects
- Evidence audit & inventory profile — Current volume, growth, mix of long-term vs short-term evidence.
- Security & policy review — Access control philosophy, 2-person rules, audit and reporting requirements.
- Space study and multiple layout options with cost ranges.
- Procure + install with chain-of-custody-friendly products and secure installation scheduling.
See also: Law Enforcement industry solutions — Warehouse Optimization Guide