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Lighting and Safety: How Poor Maintenance Increases Liability

Sep 20, 2025

Lighting is one of the most critical yet overlooked components of property safety. In premises liability cases, inadequate or poorly maintained lighting is a frequent factor in determining whether a property owner or manager met their duty of care. From parking lots and stairwells to entryways and hallways, lighting design and maintenance play a key role in deterring crime, reducing accidents, and demonstrating proactive security practices.
This article explores the legal and safety implications of lighting failures, the role of lighting expert witnesses, and why preventative maintenance is a necessary investment in liability reduction.

Lighting as a Security Control

Well-designed lighting is more than a design choice; it is a fundamental security measure. Proper illumination increases natural surveillance, reduces hiding spots, and improves overall situational awareness for tenants, employees, and visitors.


When lighting is insufficient, perpetrators may feel emboldened, and property owners may face claims of foreseeable risk—especially if previous incidents occurred in poorly lit areas. Courts often evaluate whether lighting levels met recognized standards, such as those outlined by the Illuminating Engineering Society (IES), and whether reasonable efforts were made to maintain those conditions.



Maintenance and Liability Exposure

Even properties with well-planned lighting systems face risk if maintenance is inconsistent. Common issues include:


  • Burned-out bulbs left unreplaced for extended periods.

  • Damaged fixtures or wiring creating dark spots.

  • Landscaping blocking light coverage in walkways or parking areas.

  • Failure to adjust lighting for seasonal changes in daylight hours.


A lack of routine inspections or maintenance logs may indicate negligence, making it easier for plaintiffs to claim that the property owner ignored known safety risks. Preventative maintenance programs help demonstrate a commitment to security, reducing exposure in litigation.



The Role of Lighting Expert Witnesses

Lighting experts often serve as key resources in legal proceedings. Their role includes:


  • Evaluating illumination levels using specialized equipment and comparing them to industry standards.

  • Assessing fixture placement and coverage to determine blind spots and unsafe areas.

  • Reviewing maintenance records to identify gaps in inspection or replacement schedules.

  • Providing demonstrative evidence to show jurors how lighting conditions contributed to an incident.


Expert witnesses can translate technical findings into clear visuals, making it easier to establish whether lighting was a contributing factor in an injury or security failure.



Preventive Maintenance as Risk Management

Implementing a preventative maintenance plan is a cost-effective way to avoid future claims and ensure compliance. A strong program includes:


  • Scheduled inspections and immediate repairs.

  • Documentation of all maintenance activities.

  • Regular assessment of crime patterns and environmental factors that may influence lighting needs.

  • Integration of lighting with security systems, such as motion-activated sensors and cameras.


Proactive measures demonstrate that property managers prioritized safety and acted responsibly, which can be crucial in defending against negligence claims.



Final Thoughts

Lighting is often the first layer of security and one of the easiest to neglect. Poor maintenance not only creates safety hazards but also increases legal exposure for property owners. In many premises liability cases, lighting conditions are central to determining foreseeability and negligence.


By working with a lighting expert witness and implementing a robust preventative maintenance program, property managers and legal teams can strengthen their case, reduce liability, and create safer environments for all occupants.

CONTACT
SEAN A. AHRENS

Tel: 1 (833) 247-3677

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ean Ahrens, a security consultant and expert witness based in Chicago, Illinois.

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Expert Witness Security Consulting in Chicago

SEAN A. AHRENS, MA, CPP, CSC, BSCP, FSyl, CHPA

Years in Practice: 23

  • General Specialties: Security Management

  • Contact me to see my CV 

Fields in specialization focus: Workplace violence, armed assailant active shooter, operations alarm, surveillance, crime prevention through environmental design, commercial, retail, and hospitality.

Working as a current security consultant, I have current knowledge regarding current threats, and vulnerabilities for a myriad of building types: parking garages, apartment buildings, warehouses, bars, restaurants, entertainment, office, workplace violence and security technology, operations, and architecture. 

My focus is on premise liability, negligence, wrongful hiring, foreseeability, crime demographic analysis, benchmarking, physical security, and security management.

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  • My education: I have a master's in organizational security management from Webster University, graduating with honors–Cum Laude. Before that, I did my bachelor's in criminal justice at Western Illinois University. I continue to obtain certifications that further substantiate my security lineage.

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