Short answer: Telecom, distributed antenna systems, and emergency communications matter because weather can disrupt the systems tenants and responders use to coordinate, enter, alarm, transact, and recover.
Physical underwriting should map communications dependencies alongside power and water exposure.
Why Communications Are A Building-System Issue
CISA’s National Emergency Communications Plan emphasizes resilient and secure emergency communications during disasters. FEMA disaster communications sources describe operational communications as part of response and recovery. CISA resilient-power sources connect backup power to critical facilities and sites.
For commercial property, the practical question is what stops when communications stop. Access control, cameras, point-of-sale, tenant internet, fire alarm monitoring, elevators, building controls, and emergency response may all depend on telecom rooms, risers, antennas, batteries, or network equipment.
What To Review
| Communications issue | Evidence question |
|---|---|
| Telecom room location | Is equipment exposed to water, heat, or roof leaks? |
| Riser pathways | Can water travel through shafts or conduits? |
| Backup power | How long do critical systems remain supported? |
| DAS or in-building wireless | Who maintains it and who uses it? |
| Carrier demarcation | Who owns each failure point? |
| Monitoring | Are failures visible before tenants report them? |
| Emergency plan | Who coordinates communications during outage? |
The file should avoid vague labels like “telecom closet” without photos and ownership notes.
El Nino And Communications Boundary
NOAA CPC and WMO support June 2026 El Nino preparedness, but they do not prove a communications outage. They support reviewing building communication dependencies before heavy rain, wind, flooding, heat, or power disruption.
Properties with medical tenants, labs, senior living, multifamily, self-storage, offices with security systems, campuses, or logistics operations should be especially clear about communications dependencies.
Cost And Interruption
Communications failures can create:
- Tenant business interruption.
- Access-control problems.
- Fire alarm monitoring issues.
- Elevator communication concerns.
- Delayed restoration coordination.
- Security-camera gaps.
- Emergency response friction.
- Lender questions about continuity planning.
The problem is often cross-system: the telecom room fails and several building functions degrade together.
What A Strong File Looks Like
A strong file includes room photos, equipment owner, carrier contacts, riser map, flood or leak exposure, backup-power support, battery records, antenna or DAS service records, tenant dependency notes, and emergency communication steps.
For claims teams, pre-event photos of racks, floor drains, penetrations, ceiling condition, and water pathways can be decisive.
Decision Standard
The decision standard is whether communications dependencies are visible enough to manage. If a building cannot identify which tenant operations, alarms, access systems, and response procedures depend on a telecom room, it cannot quantify interruption risk well.
Owners should also identify single points of failure. A telecom room below grade, a battery set past useful life, a roof leak above a riser, or a shared carrier pathway can turn one water event into many tenant impacts.
The file should distinguish tenant internet from emergency or building communications. A retail tenant losing point-of-sale connectivity is different from a fire alarm monitoring issue, elevator communication concern, or emergency responder radio coverage problem. Each has a different escalation path.
That distinction should be visible before the first outage call arrives.
Stakeholder Translation
Owners and managers use the file to protect communications rooms and response.
Portfolio owners use it to compare communications dependencies.
Insurers and MGAs use it to understand system aggregation.
Brokers and claims teams use records to explain downtime.
Lenders and private credit teams use it to test continuity and downside assumptions.
The Bottom Line
Communications are part of physical underwriting because weather can impair the systems that coordinate recovery. Physical intelligence connects telecom location, power, water exposure, ownership, and tenant consequence.
Read next: data rooms and telecom closets, power outages and indoor air quality, and building automation controls.
Sources and Scope
Source lanes include CISA National Emergency Communications Plan, CISA Resilient Power Working Group, FEMA Disaster Emergency Communications, FEMA Community Lifelines, Ready.gov Business Continuity Planning, NOAA CPC ENSO Diagnostic Discussion, and WMO El Nino/La Nina Update May 2026. This article is not telecommunications engineering, code, emergency-management, legal, insurance, claim, credit, or investment advice.