Show Notes
Why New Buildings Can Have Worse Cell Coverage
A beautiful, newly constructed building can still deliver a frustrating tenant experience: a phone shows one bar or none at all. This episode examines why that happens and why the problem is often more common in new construction than in older properties.
Modern buildings are designed for energy efficiency, security, and architectural appeal. Low-emissivity glass helps manage heat, while steel framing and dense materials support the building’s structure and appearance. But those same features can weaken or block cellular signals. The result can resemble a Faraday cage: a building that looks state-of-the-art while making it hard for occupants to place a call, check email, or use mobile data.
Dead zones are not limited to exterior offices or isolated corners. They can affect the spaces where reliable communication matters most, including:
- Tenant work areas
- Lobbies and common areas
- Stairwells
- Elevators
- Parking garages
- Underground levels
When cellular service fails indoors, tenants usually do not blame their mobile carrier. They blame the building. That turns a technical coverage issue into a property-management, tenant-retention, and reputation issue.
Carrier Wi-Fi Versus a Distributed Antenna System
The conversation explores the practical tradeoff many owners face when they decide to improve coverage. One approach is carrier Wi-Fi, which moves calls and data onto the building’s Wi-Fi network. It can be deployed quickly and costs far less than a full distributed antenna system, commonly called a DAS.
For many properties, carrier Wi-Fi can be the difference between taking action and doing nothing. But it is not a set-it-and-forget-it solution. It must be intentionally designed, maintained, and monitored. A Wi-Fi deployment can create a new operational problem when access points are tucked away, firmware goes out of date, and no one is checking whether the system still performs as intended.
A DAS can provide a more comprehensive approach, but large-building projects can cost millions. The episode does not present one solution as universally right. Instead, it emphasizes that the solution must match the risk. A lower-cost option may be appropriate in some situations, but cost alone cannot determine the answer where a dropped emergency call could create a safety or liability issue.
Key questions to consider include:
- What communications must work reliably in this building?
- What areas have weak coverage today?
- What happens when Wi-Fi is unavailable or poorly maintained?
- Who owns ongoing monitoring, updates, and incident response?
- Does the chosen solution support emergency communication in high-risk areas?
The Ownership Gap: The Room Nobody Owns
Technology is only part of the challenge. The larger problem is often coordination. Carriers may view their role as providing signal outside the building. Landlords may view carrier network performance as outside their responsibility. Tenants simply expect their phones to work.
That disconnect creates an ownership gap. Projects can stall even after an owner approves a solution and a carrier participates, because parties cannot agree on responsibilities such as backhaul costs. The episode describes how these delays can drag on while tenants continue to complain and the property loses goodwill. In one example, the cost in dispute was small compared with the impact of delayed resolution, lost rent, and tenant frustration.
The operational ownership gap also appears in the spaces that support coverage systems: the telecom closet, the DAS headend, and the Wi-Fi controller. If no one is clearly accountable for those components, they become an operational black hole. When coverage fails, the carrier may say it is not their issue, the landlord may say the same, and the tenant is left without a resolution path.
Coverage planning needs named accountability. IT, property management, facilities, and carrier-side stakeholders should understand their roles before implementation, not after a tenant raises a complaint.
Cellular Coverage Is a Public-Safety Issue
Indoor cellular service is not simply a convenience feature. It can be critical during an emergency. A phone needs to work where people may be located when they need help: in a stairwell, elevator, parking garage, or underground area. When a system goes down, the consequences may be much more serious than a missed email or slow data connection.
The episode makes the case that building teams should assess coverage through an operational and public-safety lens. A budget-friendly solution is not sufficient if it cannot support the risk profile of the property. Reliable communication should be considered alongside the infrastructure that building teams already treat as essential.
What Building Teams Should Do Before Tenants Move In
The central recommendation is simple: do not wait for a complaint. Test coverage before tenants move in and before a coverage failure becomes part of the building’s reputation.
- Walk the property with phones using each major carrier.
- Place calls in work areas, not just attractive common spaces.
- Test stairwells, elevators, parking garages, and underground levels.
- Assess spaces occupants may use during an emergency.
- Include IT, facilities, property management, and carrier-side participants where possible.
- Define maintenance, monitoring, and escalation responsibilities before deployment.
Coverage should be treated as managed infrastructure. It affects safety, tenant satisfaction, tenant retention, and the building’s long-term reputation. The goal is not merely to solve a complaint. It is to build an accountable system that continues to work.
Modern Buildings Can Quietly Become Cellular Dead Zones
Walk into a new commercial building and you expect the basics to work. The lobby is polished, the finishes are modern, the building systems are sophisticated, and the workspace is ready for tenants. Then someone pulls out a phone to check email, place a call, or access mobile data and finds one bar—or no service at all.
That experience is more than an annoyance. It is one of the fastest ways a building can disappoint tenants. And when it happens, tenants rarely blame their carrier. They blame the property.
Indoor cellular coverage is increasingly part of the building experience. It influences how tenants view the property, how confidently employees can work, and whether people can communicate when conditions are not ideal. For commercial real estate owners, managers, and facilities teams, the right response is not to wait for complaints. It is to treat coverage as infrastructure that deserves planning, ownership, testing, and ongoing attention.
Why New Construction Can Make Cell Service Worse
Weak indoor coverage is not only an old-building problem. In many cases, newer buildings can create some of the most difficult coverage conditions.
Energy-efficient glass, including low-emissivity glass, is designed to manage heat. Steel framing and dense construction materials support modern architecture and building performance. Those features provide real value, but they can also interfere with cellular signal entering the building. The combination can create an environment similar to a Faraday cage, where outside signal has difficulty reaching occupants inside.
The problem is not confined to a single office near the center of the floor plate. A modern building can have weak coverage in open workspaces, common areas, stairwells, elevators, parking garages, and underground levels. Open floor plans may look appealing in a leasing brochure, but they can also put more users in competition for an already weak signal.
That creates a mismatch between expectations and reality. A tenant sees a new, premium environment and expects dependable connectivity. When their phone does not work, the building’s technical sophistication does not matter much. The tenant experience has already been compromised.
Coverage Is a Building Experience Problem
Cellular dead zones are often discussed as a carrier issue, but that is not how tenants experience them. They experience them as a building issue.
A dropped call in a lobby, weak service in a conference area, or unreliable mobile data in a workspace can make a property feel less functional. The impact can extend beyond momentary frustration. People rely on phones for communication, authentication, scheduling, email, navigation, and everyday work. When those functions fail repeatedly indoors, tenants notice.
For property teams, that means indoor coverage belongs in the same conversation as other services that shape the tenant experience. It affects reputation and retention. A building known for dead zones can lose tenants to a competing property where phones work reliably.
The business issue is straightforward: a problem that appears technical at first becomes a relationship issue. The longer it persists, the harder it is to resolve without friction.
Carrier Wi-Fi Can Help, but It Must Be Operated
One practical response is carrier Wi-Fi. By offloading calls and data to the building’s Wi-Fi network, a property can improve connectivity more quickly and at a lower cost than deploying a full distributed antenna system.
That cost difference matters. A distributed antenna system, or DAS, can run into the millions for a large building. Carrier Wi-Fi can offer a more accessible path for a property that needs to improve conditions without committing immediately to a major infrastructure project.
But lower initial cost does not remove the operational responsibility. Carrier Wi-Fi works only when it is designed well, maintained properly, and monitored. A deployment that receives attention at installation and then gets forgotten can become its own failure point. Access points may be out of sight, firmware may become outdated, and no one may be responsible for checking whether the network still supports the intended use.
That is the distinction building leaders need to make. Carrier Wi-Fi is not inherently inadequate. It is inadequate when a property treats it as a one-time purchase rather than a living system.
Before relying on Wi-Fi for calls and data, teams should determine who owns the following responsibilities:
- Wi-Fi design and coverage validation
- Access-point health and replacement
- Firmware updates
- Ongoing monitoring
- Performance troubleshooting
- Escalation when users report failures
Without clear ownership, the building may simply replace one kind of dead zone with another kind of operational blind spot.
A DAS May Be the Right Answer When Risk Demands It
A DAS is a different class of investment. It is intended to distribute carrier signal throughout a building, and it may provide a more comprehensive answer in properties where dependable coverage is essential.
The episode’s key point is not that every building needs a DAS. The right solution depends on the building, the spaces that need service, the expected use, and the risk when communications fail. The decision should not be driven solely by the lowest initial price.
That is especially important when the conversation turns to emergency communications. “Most of the way there” is not a meaningful standard when someone is trying to make a 911 call and the call drops. A building team should ask what breaks when a coverage solution fails. If the answer includes a serious safety, operational, or liability concern, then the solution needs to reflect that reality.
The Ownership Gap Can Stop Good Projects
Technology projects often fail in the handoff between organizations. Indoor cellular coverage is a clear example.
A carrier may say that its responsibility ends with signal outside the building. A landlord may say the carrier network is not the landlord’s responsibility. The tenant only knows that the phone does not work. This is the ownership gap.
Even a project with broad agreement can stall when details are not settled. An owner may approve a DAS, a carrier may approve the approach, and the work can still be delayed because no one agrees on who pays for backhaul. Meanwhile, tenants continue to complain, the owner loses goodwill, and the cost of delay can outweigh the relatively small expense being debated.
The same gap exists after installation. Who responds when signal drops? Who manages the telecom closet? Who owns the DAS headend? Who is responsible for the Wi-Fi controller? These are the rooms and systems nobody owns unless accountability is deliberately assigned.
Property leaders should establish a responsibility model before deployment. IT, facilities, property management, and relevant carrier contacts should know what they own, how issues are reported, and how escalation works. That turns a vague complaint into a manageable operational process.
Public Safety Changes the Standard
Indoor coverage is not just about convenience. It is a public-safety concern.
Emergency calls need to work in places that may have the worst signal conditions: stairwells, elevators, parking garages, and underground areas. Those locations are not edge cases. They are precisely where people may be during an emergency or where they may need to request help.
Building teams should evaluate coverage with those situations in mind. Testing a phone in a bright lobby is not enough. A reliable plan needs to account for the areas occupants would use or pass through in a crisis.
This is why cellular coverage should be viewed as critical infrastructure. It supports the building’s reputation, helps retain tenants, and contributes to safety. It deserves the same long-term thinking applied to other essential building systems.
Test Before a Complaint Arrives
The most actionable advice is to test before tenants move in. Do not wait for a complaint to reveal a coverage problem.
Walk the building with phones on each major carrier. Make calls in spaces where people actually work. Test stairwells, elevators, parking garages, underground levels, and common areas. Consider the places people would be in an emergency, not only the places a visitor sees during a tour.
Bring the right people into the assessment. IT can address network and system considerations. Facilities can address building operations. Property management can connect the work to tenant experience and ownership. Carrier-side involvement can help clarify coverage and coordination questions. No single group can solve the whole problem alone.
Then document the outcome. Identify weak areas, define the appropriate remedy, assign ownership, and establish maintenance expectations. Whether the answer is carrier Wi-Fi, a DAS, or another planned approach, the real objective is durable accountability.
Make Coverage a Managed Asset
Cellular coverage should not be discovered only after a tenant reports that a call failed. In modern commercial properties, it is part of how the building works and how tenants judge it.
Building teams that plan early can avoid a costly cycle of complaints, unclear responsibility, and delayed projects. They can also make better decisions about the tradeoffs between cost, maintenance, reliability, and safety.
For a deeper discussion of dead zones, carrier Wi-Fi, distributed antenna systems, ownership gaps, and practical building testing, listen to this episode of Built, Wired & Secured. The central lesson is clear: treat cellular coverage as the critical infrastructure asset it is, and manage it before it becomes a tenant problem.