Self-storage conversions are having a moment. If you work with clients planning portfolio expansion, the latest Inside Self-Storage (ISS) article, “Self-Storage Conversion Projects: Benefits, Options and Key Considerations for Success,” is well worth your time. The piece breaks down why conversions are becoming a go-to strategy, where the hidden risks sit, and what developers often underestimate.
Below is a top-line summary for agents who want to better support clients pursuing commercial property conversions, paired with a few real-world examples to bring the concepts to life.
Instead of investing in raw land and lengthy construction timelines, ISS notes that many owners are transforming everything from existing warehouses to big-box stores into modern storage facilities with obvious appeal:
The proof is in the projects. In Paterson, NJ, a four-story industrial building from the 1950s was converted into a 393-unit, climate-controlled self-storage facility in about eight months once approvals were secured. Compare that to a typical ground-up build, which often takes 18–24 months from site prep to opening.
While conversion projects have appeal for self-storage developers, it’s important to note that conversions aren’t automatically cheaper or easier than new construction. The article in ISS highlights several oversights that can wipe out projected gains:
Structural limitations
Many office or commercial buildings were designed for 50–80 PSF, far below the 125 PSF needed for self-storage. Reinforcing beams or joists can be a major expense.
Mechanical and system upgrades
Roof replacement, outdated HVAC, insufficient electrical capacity, or new elevator requirements can stretch budgets quickly.
Rentable-space loss
Overall space can disappear in the conversion process with hallways, circulation areas, and vertical access eating up square footage.
Environmental surprises
Asbestos or lead remediation, seismic fixes, or fire-suppression expansion can turn a “quick” project into a lengthy overhaul.
Zoning and permitting delays
If self-storage isn’t permitted outright, variances or zoning changes can add months of holding costs.
These realities show up often in the field, as discussed in this interview with seasoned real estate expert Clint Harris. Over time and experience, his organization has gotten more successful with conversions by learning how to identify the right spaces and how to make a cost-effective conversion.
The ISS article emphasizes due diligence as the differentiator between high-performing conversions and ones that never meet their ROI targets. Use these insights to start conversations with your clients to help them keep the path to completion smooth:
Of course, there’s no promise that a disciplined process will completely eliminate risk, but at the very least, it minimizes the surprises that make conversions stumble.
No two facility conversion projects follow the same script. That’s where partnering with a specialist matters. MiniCo has been focused on insuring the self-storage industry for more than 50 years and helped pioneer the category of self-storage insurance itself. Our specialty property insurance programs were built for the real-world scenarios highlighted in the ISS article, and our dedicated program team has deep experience when it comes to evaluating and underwriting converted buildings. Here’s what matters most from an insurance perspective:
MiniCo’s experienced underwriters understand these nuances and bring an unmatched depth and breadth of experience to each submission. Reach out to our team today to learn about our exclusive self-storage insurance solutions.