The problem
What a legacy site audit is
A legacy site audit is a systematic reconciliation of what a portfolio's documents say against what its database, drawings, and invoices say. Telecom portfolios age in a particular way: sites built twenty or thirty years ago have changed hands several times, every transaction added amendments, and each owner kept its own records. Over time the paper and the database drift apart, and the database is usually the one that is wrong.
The drift takes predictable forms. Rent is invoiced from the original lease while a later amendment changed it. A renewal option sits in a side letter nobody indexed. As-built drawings show three antennas where the site photos show six. Tenant equipment operates on the structure with no license on file. Small errors, compounding across thousands of sites.
Missing lease data is also an accounting problem: since IFRS 16 and ASC 842 took effect (2019 for public companies), lessees report nearly all leases on the balance sheet, and an unlocatable amendment can misstate a reported liability.
The gap is measurable. As reported in Inside Towers, MYX has seen legacy site database accuracy come in under 65 percent across portfolios, with roughly $230 of missed tenant revenue per site per year, or roughly $2 million annually across a 10,000-site portfolio. The same article notes that only 2–3% of industry documents have ever been AI-read.
An audit closes that gap. Below: why audits stall, the workflow that fixes them, and a telecom site audit checklist you can use as it stands.
Document chaos
Why site audits stall
Most audits stall in the same place: the files. A single site's folder holds the ground lease, tenant leases and licenses, an amendment chain, notices of assignment, engineering drawings, structural calculations, permits, aviation-compliance filings, site photos, and years of correspondence. Formats are just as mixed: born-digital PDFs, scans of carbon copies, drawing exports, phone photos of rooftops.
Reading all of it manually is why audits get scoped down to samples, and samples are how errors survive. 85% of enterprise data is unstructured; a legacy site folder is the concentrated case.
MYX Analyzer accepts the pile as it is. Supported file types are PDF, JPG, and MP4, so scans, photos, and video land in the same grid as the leases. The Analyzer supports 40+ languages, which matters the day the amendment chain switches language mid-portfolio. Legacy Site Audits is a named Analyzer workflow, alongside:
The grid works the way lease abstraction does: each row is a document, each column a field defined by a plain-language prompt.
Workflow
The audit workflow with AI extraction
An audit runs as five passes; none depends on reading every page by hand.
Inventory
Connect SharePoint or bulk-import whole directories. The first deliverable is a filterable inventory: what exists per site, and what is missing, before anyone reads a clause.
Extract
Define the audit schema as columns: parties, dates, rent, escalation, options, equipment. MYX Analyzer extracts 500+ data fields; results stream in field by field. Portfolio-wide passes run as overnight batch, with an upfront cost estimate before submission.
Flag
Every value carries a confidence rating. LOW and empty cells are the worklist: ambiguous clauses, illegible pages, documents that never answer the question. Put extracted values next to your database export and the conflicts become filters.
Verify
Every value cites the page and section it came from, so a check opens the clause, not the whole file. Fix an underspecified prompt and rerun a cell, row, or column. Fields that stay hard switch to MYX MAX, the tier for the hardest fields.
Remediate
Correct the database, align invoicing with the escalation clauses, chase missing amendments, license undocumented equipment. Excel export with custom templates delivers the audit workbook in the format your asset register already uses.
Measured extraction quality is 94.7 % on internal evaluation sets; the workflow still assumes expert sign-off. Confidence does the triage: reviewers start where the rating is LOW, not evenly across thousands of straightforward cells.
Remediation is where findings turn into money: extracted escalation clauses become corrected rent schedules (see rent calculation); the free lease escalation calculator models a single clause by hand. When an audit precedes a transaction, the same grid carries into acquisition due diligence.
Lead magnet, no gate
Legacy site audit checklist
A telecom site audit checklist works per site, then rolls up. This is the per-site pass, ordered to save the most rework. Use it on paper or as the column plan for an extraction grid. No email address required.
Items 1–9 are lease work; 10–13 are technical; 14–15 are what a buyer's counsel asks about first.
Engineering drawings
Drawings against reality
The lease half of an audit fails on missing paper; the technical half fails on outdated paper. Structural drawings produced at construction rarely reflect two decades of tenant swaps, and the gap between drawn and installed configuration is where loading risk and unbilled equipment hide.
The Analyzer reads drawings the way it reads leases: whole pages, plain-language prompts, no zone templates. Media resolution settings keep high-detail documents readable, so title blocks, revision tables, and load schedules extract cleanly. JPG site photos land in the same grid, so checklist items 10 and 11 become filterable columns: drawn, photographed, and licensed equipment.
How that works on real archives, and why template OCR fails on them, is covered on the engineering drawings page.
Proof
Audit scale, on the record
Engagement and accuracy-gap figures as reported in Inside Towers, August 26, 2026.
On reading full archives instead of samples, MYX CEO Yavor Mihailov: “You’re never going to read that with a human, but we read 100 percent of it with the Analyzer.”
“For organizations with strict data requirements, the platform can be deployed within the customer’s own environment and in compliance with standard enterprise security measures, including zero AI model training on customer data.” — as reported in Inside Towers
MYX is ISO 27001 certified, and the commitment that customer documents are never used to train AI models is contractual. Details are on the security & GDPR page; the day-to-day tower workflow is on the telecom towers page.
FAQ
What is a legacy site audit in telecom?
A legacy site audit reconciles what a portfolio's documents say against what its database, drawings, and invoices say. Per site it confirms the lease and full amendment chain, rent and escalation, term and renewal options, tenant licenses, as-built drawings, permits, and access rights, then corrects the records where sources disagree.
How does telecom site audit software flag gaps and conflicts?
MYX Analyzer extracts audit fields into a grid where every value carries a confidence rating (HIGH, MEDIUM, LOW) and a reference to the page and section it came from. Low-confidence and empty cells mark the gaps: illegible pages, ambiguous clauses, documents that never answer the question. Conflicts surface when extracted values sit next to your database export and disagree; each check goes straight to the cited clause.
Can a site audit run without documents leaving our environment?
Yes. As reported in Inside Towers: “For organizations with strict data requirements, the platform can be deployed within the customer’s own environment and in compliance with standard enterprise security measures, including zero AI model training on customer data.” MYX is ISO 27001 certified, and the commitment that customer documents are never used to train AI models is contractual.
Start your site audit
Upload one site's folder, define the audit columns, and review every value with its confidence rating and source reference.
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