The Class A Standard for AI Voice — How Guardian Storage Brought Lumio Into Its Phone Channel
“If our property managers are handling these sidebar phone conversations, that's distracting them from renting space, collecting money, or dealing with somebody in front of them. If we can free them up from the basic blocking and tackling, that will let them do what we really want them doing — renting more space.”
— Scot Vayo, COO, Guardian Storage
96%
Customer Satisfaction
30+
Custom Skills Built
24/7
Phone Coverage
3
Independent Endorsements
About Guardian Storage
Guardian Storage is one of the most respected operators in self storage — a premier, Class A, staffed-property portfolio across Pennsylvania, Colorado, and West Virginia. Guardian sits among the country's top-50 operators and is widely regarded for the quality of its properties and the discipline of its operations.
When Guardian decided to bring AI into its phone channel, the bar was set accordingly: the technology had to elevate the customer experience, free up its on-site managers without replacing them, and earn buy-in at every level of the company.
The Challenge
Class A service, without taking managers off the floor.
Guardian's property managers were spending a significant share of their day on the phone — and the surface area of those calls was wider than it looked from the outside. On any given day, a manager fields everything from gate codes and billing to move-outs, unit transfers, smart-lock access, refunds, and on-site emergencies. Each one carries its own policies, verification rules, and routing logic.
After-hours, weekends, and the first week of every month, that volume spiked to the point that customers were leaving voicemails. For a company that markets itself on the quality of its in-person service, those missed calls were a quiet but compounding tax on the customer experience.
“We are not currently an organization that is looking to operate our properties remotely. We're not looking to see people go home.”
— Scot Vayo, COO
Any solution had to make Guardian's people more effective — not less necessary.
Why Lumio
Guardian evaluated AI voice as a strategic, long-term decision. Scot describes himself as an AI advocate who didn't want Guardian to be the last operator left out of a generational shift — but he was also openly skeptical of the category. Some AI products were impressive; many were not.
The deciding factor had to be domain fit: a partner that understood storage well enough to handle anniversary billing, late-fee windows, gate code verification, move-out notice timing, and truck rentals without weeks of generic configuration. Guardian's regional leadership echoed the same standard:
“We could have done business with another AI company that didn't know self storage and probably would have had a different relationship. It's nice that we're working with someone that knows the business.”
— Michael Wittman, Area Manager, Colorado
Built for Guardian, Skill by Skill
More than thirty distinct call workflows, each carrying Guardian's own policies.
Getting Guardian's AI Agent, Mason, from a generic voice agent to a Guardian-grade one was the work. In partnership with Guardian's operations team, Lumio built and tuned a custom skill library covering Guardian's full operational surface area — more than thirty distinct call workflows. Each skill carries Guardian's own policies, verification thresholds, and human-transfer rules.
Mason verifies callers against their SiteLink account on the fly, redacts sensitive information when a phone number doesn't match, and knows which of the thirty-plus paths to take based on a sentence the customer hasn't yet finished saying.
That library doesn't sit still. Two operating habits keep Mason moving at Guardian's pace:
A real feedback loop
Guardian's managers route corrections through Lumio's in-product feedback button, with most issues turned around the same business day — the single feature Michael Wittman's team most appreciates.
Manager-led knowledge curation
Front-line managers author Mason's FAQ library themselves, on a per-property basis, so the agent reflects how each property actually operates. Every imperfect call becomes a permanent improvement instead of a forgotten complaint.
This is what “domain fit” looks like in practice. It isn't a checklist. It's a hundred small operational decisions, made together, over months.
The Voices: One Tool, Three Vantage Points
Guardian's adoption of Mason has been validated independently at three distinct levels of the organization — each with a different job, a different lens, and a different reason to be skeptical. All three landed in the same place.
Scot Vayo
Chief Operating Officer
Scot has been the executive sponsor of the Lumio engagement from the beginning. His framing is strategic and long-horizon: he sees AI voice as a capability Guardian needs to learn and shape now so it can compound for the next decade.
That conviction has been underwritten in the data. Guardian's calls are now being handled by Mason, and the team's internal sentiment tracking pegs customer satisfaction at roughly 96%. The number Scot finds most telling, though, isn't on a dashboard — it's the conversations he has on-property with longtime tenants:
“Our tenants seem to be engaging with Mason more than they were at the start. One of them commented to me in person saying how she was skeptical of Mason at first, but now she thinks he's great.”
— Scot Vayo, COO
Michael Wittman
Area Manager, Colorado
Michael's lens is what he hears from the property managers who use the dashboard daily. And what he hears, consistently, is that Mason is taking real volume off the phone. That freed-up time isn't theoretical — Michael's managers are using it on the work he most wants them doing:
“[They] focus on tenants that they are talking to face-to-face with in the office. They're not having to pick up a phone while they're having a conversation with them, or doing a move-in, or following up on leads, or following up on other phone calls.”
— Michael Wittman, Area Manager
The most persuasive evidence for Michael has been watching one of his most skeptical managers come around. This manager was open about the fact that he didn't want AI in his building. Then he tried to break it.
“From someone that wasn't pro-AI, in fear that it was going to take his job, [he's] realized it's just another tool that we have in our toolbox to assist our customers and make our time more efficient. He says he's even tried to break it and he can't.”
— Michael Wittman, Area Manager
When the time came to decide whether to expand the pilot, Guardian's leadership gave the field team an off-ramp — if the property managers running Mason wanted to pull the plug, they could. The opposite happened. Guardian made the decision to roll Mason out to the rest of their portfolio.
Erwin Ahuja
Property Manager, Fort Collins South
Erwin was — by his own admission — exactly the kind of property manager you'd expect to push back on AI in a service organization. He's built his career on customer service and on the relationships he has with his tenants. His concern wasn't whether the technology worked. It was whether it would erode the thing he was hired to protect:
“I've spent my life in customer service... I know what I can provide here in the relationship I have with my tenants. And I didn't want to lose that. I was kind of cautious going into it.”
— Erwin Ahuja, Property Manager
The conversion took about two to three weeks. The moment it clicked was the last few days of the month — when his property historically gets buried in the same handful of calls from tenants verifying their move-outs. Mason now handles those end-to-end, confirms the lease has been closed out, and Erwin never sees them. The simple, repetitive questions — access codes, move-out procedures, truck and account questions — are largely resolved before he ever picks up the phone, while the calls that actually need a human still come through to him. His morning starts on the Lumio dashboard instead of on voicemails.
The 2 a.m. Moment
If you want one moment that captures why Guardian made this decision, it isn't a chart. It's a call to Guardian Storage Allegheny Valley at 2:37 a.m. on a Saturday — the kind of call that, on any night before Mason, would have been a voicemail or a hang-up. Instead, on the first ring, Mason picked up.
“Hey, Mason. I didn't know you'd be awake. I guess this is a 24-hour helpline, which is awesome. I never thought a storage business would have a 24-hour customer service line.”
— Longtime Guardian tenant, Allegheny Valley, 2:37 a.m.
Throughout the entire conversation, Mason did exactly what one of Guardian's best property managers would have done. He listened. He didn't interrupt. He didn't try to redirect a delighted customer toward a faster outcome. And when the call ended, he captured both the operational ask — move-out confirmed, unit needs inspection — and the qualitative feedback — share this with management — into a structured, prioritized follow-up task for the manager first thing in the morning.
The fact that someone was there — at 2 a.m., on a Saturday, when she'd been bracing herself for voicemail — turned a routine move-out call into an unprompted thank-you to the business. She wanted the owner to hear it directly:
“I'm telling you, whoever owns this business, please send it forward that that is impressive.”
— Longtime Guardian tenant, Allegheny Valley
That single call is the entire thesis of why a staffed, customer-first operator brings AI into its phone channel in the first place. It isn't about replacing the manager who would have returned that voicemail on the next business day. It's about being there the moment the customer needs you — and turning what would have been a missed call into the kind of experience that earns a customer for life.
The Bottom Line
Guardian Storage is a Class A operator that holds vendors to a Class A standard. Their willingness to put their name behind Lumio — at the COO level, at the regional level, and at the property level — is the strongest endorsement Lumio can carry into the industry.
Three independent endorsements at three levels of the organization. A green light to expand to the entire portfolio.
The question is who you trust to build it — a generic provider, or a partner that understands your business and has already earned the confidence of leading operators.
Guardian has made its choice.