Flex-Industrial Proven Value-Add Case Study: 111 Belton Drive, Spartanburg (2025)

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A Spartanburg flex industrial turnaround — value nearly doubled in under two years.

How disciplined underwriting and a contrarian lease-up took an under-managed, below-market flex industrial asset to 100% leased above pro forma, and a successful exit in under 24 months.


Deal Snapshot

Asset ~48,360 SF small-bay flex industrial, six suites.
Location Spartanburg, SC
Acquired November 2023 — $1,850,000, all-cash, off-market
Sold August 2025 — $3,575,000, to an out-of-state 1031 exchange buyer
Hold period ~21 months
Capital invested ~$285,000 in targeted improvements
Rent uplift Achieved rents 59% above the ~$4.00/SF in place at acquisition
Outcome 100% leased, every lease above underwriting; value nearly doubled


The Opportunity: An Under-Managed Spartanburg Flex Asset

111 Belton came to us off-market, through a local relationship. The kind of deal that rarely reaches a broad marketing process.

On paper, it was a stable six-bay flex building. In reality, it was under-managed: in-place rents sat near $4.00/SF, one tenancy was delinquent, and the property’s curb appeal had been neglected. It was priced on its in-place income, which meant the upside was sitting in plain sight for an operator willing to do the work.

It also sat in a niche we know well. Small-bay flex industrial, blended warehouse-and-office space for light manufacturers, distributors, and service businesses – a deep, durable demand across Upstate South Carolina with very little new supply.

Tenants need this product, and there isn’t much of it.

Flex industrial building Spartanburg SC — 111 Belton Drive

The Strategy

Most owners would have protected occupancy and nudged rents gently. We did the opposite.

The original underwriting on this asset assumed holding 100% occupancy at roughly $4.00/SF, stepping to $5.00/SF over time. Our thesis was that the market would support meaningfully more, and that the long-term value of true market-rate leases was worth more than the short-term cash flow we’d give up to get there.

So we made a deliberate, contrarian call: mark every suite to market, even where that meant creating temporary vacancy.

Discipline over optics.

We were willing to trade near-term income for a stabilized rent roll built on durable, market-rate leases.

The Execution

We worked the building suite by suite:

  • Engaged every tenant first and understood their long-term plans, then structured renewals and turnovers around them.
  • Removed a non-performing tenancy and brought those bays back to the market.
  • Invested ~$285,000 in targeted improvements including a spec-built turnkey office space to attract quality tenants quickly, plus selective upfits where they unlocked higher rents.
  • Refreshed curb appeal: cleared the rear loading yard, removed dead landscaping, and replanted the frontage.
  • Re-leased to a strong flex tenant mix: light manufacturing, distribution, parts, and service users, each needing a blend of warehouse and office space.

At stabilization, every suite was leased well above both the in-place rents and our original underwriting, with several leases carrying built-in annual escalations of 3–5%.

The Result: 100% Leased, Value Nearly Doubled         

Within roughly a year of acquisition, 111 Belton was 100% leased — with rents averaging 59% above the ~$4.00/SF in place at acquisition and well beyond our own underwriting.

With the asset fully stabilized, we ran a competitive sale process and exited to an out-of-state 1031 exchange buyer in August 2025.

Purchase to sale: $1,850,000 → $3,575,000 — value nearly doubled in under two years.

Why It Matters

111 Belton is a clear window into how Clear Mountain Properties operates: rigorous underwriting, the conviction to act against the grain when the numbers support it, and the hands-on execution to see a repositioning through.

It’s also a repeatable playbook in a market we know deeply — the Upstate’s small-bay flex-industrial niche, where durable tenant demand meets limited supply. We continue to source opportunities like this one.

Interested in how CMP identifies and executes value-add opportunities across the Upstate?

Get in touch to learn about current opportunities.


Flex industrial building Spartanburg SC — 111 Belton Drive