How to Start a Storage Unit Business

Before you do anything else with the question of how to start a storage unit business, you need to pick which version of "starting one" you're actually doing. There are three meaningfully different paths and the sequence of steps is different for each.

This article walks through all three. It's part of the Storage Unit Business guide.

The three paths

For most first-time storage operators, buying an existing facility is the lowest-risk path, even though it can have a higher entry cost than building new in some markets. The reason is that an existing facility has revenue history, established occupancy, working systems, and a known operating cost structure. New construction has none of these.

Path 1: Buy an existing facility

The sequence

1. Define your investment criteria. Geography (typically within 1-2 hours of where you live), facility size (50-300 units is realistic for a first deal), price range, and the financing structure you can support.

2. Find brokers who specialize in self-storage. Generic commercial real estate brokers don't know the storage business well. The big self-storage brokers include Marcus & Millichap (specialized self-storage practice), Argus Self Storage Sales Network, and Cushman & Wakefield's storage practice. There are also regional brokers in most metro areas.

3. Review listings and request offering memorandums (OMs). An OM is a 20-50 page package with photos, financials, occupancy history, market data, and asking price. Read several to learn what good and bad facilities look like.

4. Tour facilities in person. Photos hide a lot. Visit any facility you're seriously considering. Walk every aisle. Open empty units. Check the gate, the security cameras, the office, and the perimeter fence.

5. Get pre-approved for financing. SBA 504 and 7(a) are common for first-time storage buyers. Conventional commercial financing requires more equity but is faster. We cover this in the financing article.

6. Make an offer with contingencies. Standard contingencies include financing, environmental Phase I, property condition assessment, financial verification, and zoning verification.

7. Conduct due diligence. This is the most important phase. Verify the seller's revenue claims against bank deposits, check the rent roll against actual occupancy, do a Phase I environmental, get a property condition report, verify property taxes and insurance history, check zoning, and review every operating contract (security monitoring, software, payment processing).

8. Close the deal. Typical commercial closing process: title work, loan documentation, escrow, transfer of keys and access codes.

9. Take over operations. First 90 days are about learning the existing customer base, the local market, the equipment, and the operating routine.

Hire a commercial real estate attorney to handle the purchase. Buying a self-storage facility involves complex contract terms, environmental disclosures, lease assignments, and seller representations that you don't want to navigate alone. Legal fees on a typical deal run $5,000-$15,000 and they're worth every dollar.

Realistic timeline

From "I want to buy a storage facility" to "I own a storage facility": 6-18 months for most first-time buyers. The deal-finding phase is the longest part; closings themselves typically run 60-120 days from accepted offer.

Path 2: Convert an existing building

This path involves buying a building (often a warehouse, retail box, or industrial space) and converting it to self-storage.

The sequence

1. Find a suitable building. Generally a single-story or low-rise commercial building, 20,000-100,000 square feet, in a market where storage demand exceeds supply.
2. Verify the conversion is allowed. Zoning, building code, fire code, and local self-storage regulations all matter.
3. Hire an architect with self-storage experience. Conversion design is a specialty. The wrong unit mix or aisle layout can cost you 15-25% of potential revenue forever.
4. Get conversion estimates. Construction cost typically runs $30-$80/sq ft for conversions, depending on the existing building condition.
5. Secure financing. SBA 504 with construction phase. More complex than acquisition financing.
6. Buy the building, get permits, complete construction. 6-18 months total.
7. Lease up. 24-48 months from opening to stabilized occupancy.

Realistic timeline

From "I want to convert a building" to "I have a stabilized facility": 4-7 years.

Path 3: Build new on raw land

This is the most capital-intensive and longest path. It's also the path the major REITs use most often.

The sequence

1. Find suitable raw land in a market with strong demand. Typically 2-5 acres, on a road with reasonable visibility and traffic.
2. Conduct a market study. A real third-party feasibility study from a self-storage analyst, not a back-of-envelope estimate. Cost: $5,000-$15,000.
3. Verify zoning and entitlements. New self-storage construction is increasingly restricted in many jurisdictions. Some cities have moratoriums.
4. Hire an architect, civil engineer, and general contractor. All with self-storage experience.
5. Secure construction financing. SBA 504 and conventional commercial construction loans. Significant equity required (typically 20-35%).
6. Permitting, construction, and inspection. 12-24 months.
7. Lease up. 24-48 months from opening to stabilized occupancy.

Realistic timeline

From "I want to build a storage facility" to "I have a stabilized facility": 5-8 years.

Which path is right for you?

Buying existing makes sense if:

• You have $200K-$2M in available capital or qualifying credit
• You want to be operating within 6-12 months
• You want known revenue history (lower risk)
• You're willing to accept a higher cost basis for lower risk

Converting makes sense if:

• You have $300K-$2M in available capital
• You're willing to wait 4-7 years for stabilization
• You have access to a suitable underutilized commercial building
• You can navigate construction risk and timeline

Building new makes sense if:

• You have $500K-$3M+ in available capital
• You're willing to wait 5-8 years for stabilization
• You have a clear pipeline for finding land in growing markets
• You're treating this as a 10-15 year investment, not a 3-5 year one

For most first-time storage operators, we'd recommend Path 1 (buying existing) unless you have specific construction or development experience.

Common things first-time operators get wrong

• Underestimating the lease-up timeline. New facilities don't fill up in 6 months. Plan for 24-48 months and build that into your cash flow projections.
• Buying based on asking price instead of cap rate. Cap rate (annual net operating income divided by purchase price) is the standard valuation metric. A facility at 7% cap rate is meaningfully different from one at 9% cap rate, and the asking price should reflect the difference.
• Skipping the environmental Phase I. Self-storage sites have a history of environmental issues from prior uses. Don't skip this step.
• Not verifying the rent roll. Sellers sometimes inflate occupancy figures by counting units that are technically rented but not paying. Verify against bank deposits.
• Underestimating property taxes. Many sellers will quote current property tax as the cost going forward. After a sale, the property is often reassessed at the sale price, which can dramatically increase the tax bill.

Next steps

• Cost to Start a Storage Unit Business - the line-by-line for each path
• Storage Unit Business Plan - what to put on paper for lenders
• Is Owning a Storage Unit Business Profitable? - the revenue side

Or back to the Storage Unit Business guide for the rest.