In March 2024, my director handed me a renovation budget for one of our mid-rise commercial buildings—$480,000 for mechanical and architectural upgrades. The building, a six-story property built in 1992, had two urgent problem areas: a Montgomery KONE elevator with failing relay logic, and a deteriorating atrium staircase with railings that didn't come close to current code requirements.
Montgomery KONE, for anyone who isn't a building historian: KONE acquired Montgomery Elevator in 1994, and the brand still lives on in thousands of commercial buildings across the U.S. If you own one of those buildings, this story is relevant to you.
It was my job to source the elevator modernization and the railing replacement. And I nearly made a $36,000 mistake.
Context: I'm a procurement manager at a mid-sized real estate firm—about 250 people—and I've managed our maintenance and renovation budget for seven years. That's roughly $2.1 million in cumulative spending across thirty-plus vendors over that window. I track every invoice, every quote, every change order in our cost system. When I say I compared eight vendors for this project alone, I mean it.
Here's how that comparison almost went wrong.
Gathering Quotes
We had three scopes: vertical transportation (modernizing the Montgomery KONE elevator), stair systems (replacing the steel stringers and treads), and architectural railings (cable railing around the mezzanine, glass railing at the second-floor balcony).
It's tempting to think you can just compare unit prices across these scopes. But identical descriptions of work can produce wildly different outcomes—depending on who does the work, where they do it, and how they spec the materials.
I invited four companies to bid. Two were elevator-only specialists who politely declined the railing work. That annoyed me at first: more scopes meant more contracts, more coordination, more paperwork. Turned out that was a gift. A third bidder was a mid-size architectural metals fabricator with stair and railing experience. The fourth was a large facilities contractor with a polished forty-page portfolio who said, "We can handle it all." I'll call them Full-Service.
Full-Service's quote was the lowest: $246,000 for all three scopes. My boss saw the number and said, "Why aren't we doing this?"
Good question. Why not?
The Digging Phase
I called three of Full-Service's railing references. Two described lead times eight to ten weeks longer than promised. The third had a glass railing that failed inspection due to improper standoff hardware. The contractor's response: "That was an unusual jurisdiction."
I asked about their in-house glass railing capability. "We coordinate with trusted subcontractors," the rep said. I asked to visit an active glass railing installation. Two weeks of silence, then a reply: the preferred sub was overbooked, they'd recommend an "alternative."
Let me rephrase that: they didn't have the capability. They had a rolodex.
Meanwhile, KONE's modernization specialist—Dave—quoted the elevator work at $178,000. KONE's Architectural Metals team quoted the stair systems and railings at $103,000. Total: $281,000.
When I asked Dave whether KONE could manage the general contracting and site coordination too, he said something I didn't expect:
We're not a general contractor. We don't pour concrete, we don't frame walls, and we don't manage trades outside our scope. If you need those, your GC handles it. We'll coordinate with them.
He also flagged the cable railing specification in Full-Service's quote as overkill for our application—10mm stainless cable when 1/8" was enough to meet code. "You'd be paying more than you need on materials," he said. "We can spec this correctly."
The vendor who told me I didn't need the premium option? That got my attention.
The TCO Spreadsheet
So I compared total cost of ownership, not just sticker prices.
Full-Service's $246,000 bid relied on subcontractor coordination. That introduced three risk columns:
- Glass railing sub misses inspection: roughly $12,000 in remediation, plus a $4,000-per-week tenant delay penalty
- Stair components arrive late due to scheduling conflicts: $2,500 per week in liquidated damages to our general contractor
- Spec overruns on cable railing: about 25% higher material cost than the 1/8" code-compliant alternative
I estimated the expected risk at $22,000 to $28,000.
The KONE bid was $281,000—about 14% higher. But it included in-house manufacturing and engineering, a firm schedule commitment, and a code-first spec that didn't pad material costs. After seven years of tracking renovation invoices, I know an inspection failure on a glass railing can delay a tenant fit-out by three weeks. That ripple never shows up in a quote.
Why does this matter? Because the cheapest option is not the one with the lowest bid; it's the one with the lowest total cost of completion.
The Decision
We signed KONE in May 2024. KONE's elevator modernization package met ASME A17.1-2022 requirements, which is the code edition our state's jurisdiction had adopted. Check which edition your local authority enforces before you sign anything.
KONE's elevator team completed the modernization in nine weeks. During the upgrade, they found two issues the other bidders hadn't flagged: a failing door-opener relay and a worn brake contactor on the original Montgomery KONE unit. Fixing both while the car was already opened added $4,800 to the invoice.
Worth every penny. An emergency failure would have cost us roughly $9,000 in overtime service calls, plus a tense conversation with a tenant who deserved better. Dodged a bullet.
The Architectural Metals team fabricated the stair systems in their own shop, then installed the cable railing and the second-floor glass railing. The glass railing—the one I was most nervous about—passed inspection on the first visit. The inspector specifically noted the post spacing at 16 inches on center and the laminated tempered glass with engineered standoffs.
(Should mention: we'd originally budgeted the elevator and railing as separate lines. Bundling them under one manufacturer made coordination easier—one schedule, one service team, one point of contact.)
Final cost: $285,800. About $4,800 above KONE's estimate—for the two preemptive controller fixes. Still under the project budget, because we didn't pay a dollar in delay penalties or inspection remediation. And we finished on schedule.
How to Evaluate Glass Railing Manufacturers (and Stair Systems OEMs)
That experience changed how I vet suppliers. If you're shopping for glass railing, cable railing, or custom stair systems, here's what I'd ask:
1. Ask for current installations—not samples or renderings.
"Can I visit a live job site with this exact scope right now?" If the answer involves "our subcontractor is busy" or "we coordinate with a partner," that's not a specialist. That's a middleman. A real stair systems OEM or glass railing manufacturer has production in-house and can show you.
2. Ask what they won't do.
The vendor who defines their scope is the vendor you can trust. Dave's boundary—"we don't do general contracting"—was more valuable than any discount. Specialists who know their limits will tell you when you'd be better off elsewhere. That honesty is how you build a vendor list you can keep for years.
3. Run the total cost of completion, not the unit price.
The full-service bid was $35,000 cheaper on paper. But the expected risk—inspection failure, schedule overrun, spec padding—was $22,000 to $28,000. Add in the intangible cost of stress and dispute resolution, and the choice was clear.
4. Confirm testing documentation before you spec.
When you vet a cable railing supplier, the first question is not "what cable do you sell?" It's "what does your spec assume?" For glass railing in particular, ask for the manufacturer's documentation demonstrating compliance with IBC 2021 guard load requirements (Section 1015, 200-pound concentrated top rail load) and current product evaluation reports for glass in guards (Section 2407). Verify current requirements with the building official before you finalize anything—codes vary by jurisdiction.
So glad I didn't chase the lower bid. Almost went with Full-Service, which would have meant gambling a six-month renovation schedule on a subcontractor ramping up for our job. That's not a bet I'd take again.
If your building has a Montgomery KONE elevator from the 1990s, the modernization program is worth a serious look—same manufacturer, documented service history, and a clear scope of what they do and don't do. And if a rep tells you something they won't do, listen. It means the things they say they'll do, they actually do.