Many cell tower landlords spend considerable time negotiating the original lease agreement, but then it “sits on the shelf” gathering dust without the landlord taking time to verify that their carrier is honoring it. Becoming a cell tower landlord is not as “passive” as it may seem. That gap between signing and checking is where compliance problems live. A cell tower audit is the process of reviewing an existing lease against actual carrier performance to identify underpayments, unauthorized activity, and other breaches that may have been quietly accumulating for years.
Rent Compliance Is the Starting Point
Rent payment failures happen for a range of reasons, and not all of them are deliberate. Checks get lost in the mail. Carriers periodically overhaul their internal accounts payable systems, and payments that were processing without issue can stop without any notice to the landlord. In other cases, carriers have simply decided on their own that they will no longer pay rent, even though the lease remains in effect and the equipment is still on the property. Whatever the cause, a landlord who is not actively monitoring incoming payments may not catch a problem until months or years of rent have gone missing.
Escalation compliance is a separate but equally important check. Cell tower leases typically include annual rent increases tied either to a fixed percentage or to a Consumer Price Index adjustment. Carriers and tower companies manage large portfolios of leases, and escalation errors are common. When a carrier fails to apply an escalation correctly in year three, every subsequent payment is wrong. Multiplied over a ten or twenty-year lease, even a modest miscalculation compounds into a significant cumulative underpayment.
CPI adjustments carry their own complications. Leases that tie increases to a specific index may be calculated against the wrong one, or the base period used for the calculation may not match what the lease requires. The October 2025 CPI adds an additional unprecedented wrinkle: due to a lapse in federal appropriations, the Bureau of Labor Statistics was unable to collect survey data for that reference period, and the all-items CPI for October 2025 was never published and cannot be retroactively collected. For leases that use an October reference date for annual CPI adjustments, there is no official index value to apply, and the lease itself may not provide guidance on how to handle a gap in the series. These are not errors that announce themselves. They require someone to actually check the math against the lease terms and the carrier’s payment history.
A related issue arises when the carrier has added a subtenant through collocation. Many leases entitle the property owner to a share of the revenue the primary tenant receives from subleasing antenna and equipment space to other carriers. This revenue is not always reported or remitted. An audit is often the first time a landlord learns that subtenants have been on the site for years.
Unauthorized Activity on Your Property
Rent compliance is only part of the picture. Carriers also routinely expand their physical footprint in ways the lease does not authorize.
The most straightforward example is equipment installed outside the defined lease premises. This can happen from day one: even the initial site construction sometimes results in a physical footprint that does not match the boundaries described in the lease documents, whether due to field-level decisions made during installation or a disconnect between what the lease described and what the contractor actually built. From there, wireless sites continue to evolve. New cabinets, additional antennas, and upgraded infrastructure accumulate during network build-outs and technology transitions. The leased premises description in an original agreement may have contemplated a very specific footprint, and that footprint can grow quietly without any formal amendment or additional compensation to the landlord.
A more specific problem involves RF safety barriers placed outside the lease boundaries. Carriers are required under FCC rules to prevent uncontrolled public access to areas where radio frequency exposure exceeds permissible limits, and they satisfy this requirement by installing physical restricted zones around active antennas, often with cone-and-chain barriers. On rooftop installations in particular, those restricted zones frequently extend well beyond the defined leased premises onto areas the landlord never agreed to encumber. The carrier ends up using additional roof space for its RF safety compliance perimeter at no additional cost, and the practice gets treated as a minor operational detail rather than the unauthorized land use it actually is. Property owners dealing with rooftop RF safety barriers and their lease implications face a distinct set of considerations that go beyond the standard equipment footprint analysis.
Unauthorized modifications are another recurring category. Most leases require landlord consent before the carrier can make structural changes or perform significant equipment upgrades. Carriers do not always request that consent before proceeding. The fact that a modification might have been approved had it been submitted properly does not eliminate the breach that occurred by bypassing the consent process entirely. Property owners navigating cell site modification requests and the consent process encounter a distinct set of leverage points and risks that are worth understanding before responding to any carrier outreach about planned modifications.
Access violations round out the picture. Lease agreements often restrict site access to specified hours or defined areas of the property. Carriers and their contractors do not always observe those restrictions, and a pattern of access beyond the permitted scope can itself constitute a lease breach worth addressing.
Audit First, Then Enforce
Identifying problems through an audit is only the first step. The follow-through is equally important.
Property owners who discover lease violations but take no action to address them can create legal problems for themselves. A landlord who consistently allows breaches to continue without objection may face a waiver argument from the tenant, the position that the landlord’s inaction constituted implicit acceptance of the tenant’s conduct. Separately, statutes of limitation place a hard deadline on how far back a landlord can reach when seeking to recover damages for past breaches. Rent underpayments and other violations that predate the applicable limitations period may be unrecoverable regardless of how clear the breach was. Both problems compound over time, and neither announces itself. The longer a violation goes unaddressed, the narrower the landlord’s options become.
Enforcing a breach promptly puts the relationship on different footing. It establishes that the landlord is monitoring lease performance, that violations carry consequences, and that the carrier cannot count on unchecked latitude for the duration of a decades-long tenancy.
Enforcement typically begins with written notice identifying the specific breach and demanding a cure within the time frame the lease provides. That notice creates a record of the landlord’s position. What follows depends on the nature of the breach, the available lease remedies, and the outcome the landlord is trying to achieve.
If you have not reviewed your cell tower lease for compliance, the question is less whether problems exist and more how many. Contact Coastal Tower Law to schedule a lease audit and find out where things actually stand.