Storage Unit Business Plan
A storage unit business plan is a different document from most small business plans for one main reason: storage is heavily a real estate financing process, and the lender expects the plan to read like a real estate underwriting package, not a small business pitch deck. This article walks through what actually goes in one and what lenders look for.
It's part of the Storage Unit Business guide.
When you need a formal plan
You need a formal plan if you're seeking:
- SBA 7(a) or 504 financing for an acquisition, conversion, or new build
- Conventional commercial mortgage financing
- Private investor capital (partners, limited partners, syndicate)
- Construction financing for a new build or major conversion
You don't need a formal plan if you're paying cash for a small existing facility and don't need any external financing. In that case, the lean version (described below) is enough for your own decision-making.
What lenders actually look at
For storage acquisition or development financing, lenders read these sections carefully:
- Project summary and use of funds. What you're buying or building, where, how much, and exactly what the money is for.
- Sponsor (you) financial profile. Personal net worth, liquidity, credit score, and any prior real estate experience.
- The market study. Local supply and demand analysis, competitive set, demographic trends, and rental rate justification.
- Pro forma financial projections. Year-by-year revenue, expenses, NOI (net operating income), and debt service coverage. Lenders typically want to see at least 1.25x debt service coverage at stabilization, and ideally 1.40x.
- The cap rate justification. Why the asset's expected NOI justifies the purchase price (or construction cost) at the prevailing market cap rate.
- Lease-up assumptions. For new construction or repositioning, how the facility will reach stabilized occupancy and over what timeline.
- Exit or refinance strategy. What you'll do with the property in 5-10 years (hold, refinance, sell).
Sections lenders skim or skip:
- Industry overview (they already know the storage industry)
- Generic SWOT analyses
- Long marketing strategy sections (storage marketing is mostly online listing management and Google Ads)
- Management team org charts (for owner-operator deals)
The lean version (for your own decision-making)
If you're not yet at the financing stage but want to think through whether a specific deal makes sense, here's the lean storage business plan that's actually useful.
1. The deal
What's the property, where is it, what does it cost, and what does it earn today?
| Item | Value |
|---|---|
| Address | [physical address] |
| Type | Self-storage, [number] units, [climate / non-climate] |
| Total square footage | [sq ft] |
| Asking price | $[X] |
| Current annual gross income | $[X] |
| Current annual NOI | $[X] |
| Current cap rate (NOI / price) | [X]% |
2. The market
What's the local supply and demand picture?
- Population within 3 miles
- Median household income within 3 miles
- Number of competing storage facilities within 3 miles
- Total square feet of storage supply within 3 miles
- Square feet of supply per capita (national average is about 7-8 sq ft per capita)
- Estimated demand (based on demographic models)
A market with significantly less supply per capita than the national average usually has room for additional storage. A market with significantly more supply per capita is saturated.
3. The pro forma
Year-by-year revenue and expense projection:
| Line | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 |
|---|---|---|---|---|---|
| Gross potential revenue | $X | $X | $X | $X | $X |
| Less: vacancy and concessions | -$X | -$X | -$X | -$X | -$X |
| Effective gross income | $X | $X | $X | $X | $X |
| Less: operating expenses | -$X | -$X | -$X | -$X | -$X |
| Net operating income (NOI) | $X | $X | $X | $X | $X |
| Less: debt service | -$X | -$X | -$X | -$X | -$X |
| Cash flow before tax | $X | $X | $X | $X | $X |
For an existing facility purchase, year 1 should approximately match the seller's recent operating numbers (verified via bank statements). For a new build or repositioning, year 1 will be much lower than later years as the facility leases up.
4. The operating expense breakdown
The major operating expense categories for self-storage:
| Category | Typical % of revenue |
|---|---|
| Property taxes | 5-15% |
| Insurance | 2-5% |
| Utilities (climate control especially) | 3-10% |
| Software and POS | 1-3% |
| Marketing (Google, listings) | 3-8% |
| Repairs and maintenance | 3-8% |
| Property management or staffing | 5-15% |
| Misc (legal, accounting, supplies) | 2-5% |
| Total operating expenses | 25-50% of revenue |
The operating expense ratio (operating expenses divided by gross revenue) is one of the key metrics lenders look at. A well-run mature facility usually runs 30-40%. Anything significantly higher is either poorly run or has location-specific issues.
5. The financing structure
How is the deal financed?
| Source | Amount | % of total |
|---|---|---|
| Down payment (cash) | $X | X% |
| SBA 504 / 7(a) loan | $X | X% |
| Conventional bank loan | $X | X% |
| Seller financing | $X | X% |
| Total | $X | 100% |
For SBA 504, the typical structure is 50% bank conventional, 40% SBA, 10% borrower cash. For SBA 7(a), the typical structure is 85-90% loan, 10-15% borrower cash.
6. The debt service coverage ratio
The single most important metric for any storage financing application:
Debt Service Coverage Ratio (DSCR) = Net Operating Income / Annual Debt Service
A DSCR of 1.25x means the property generates 25% more income than the loan payment requires. Lenders typically want to see at least 1.20-1.25x at stabilization. SBA loans sometimes require 1.30-1.40x.
If your projected DSCR is below the lender's threshold at stabilization, the deal won't close. You either need a lower purchase price, more equity down, or a different financing structure.
7. The lease-up assumptions (for new construction or repositioning)
For new construction or for value-add deals where you're improving a poorly-run existing facility, the lender wants to see:
- Starting occupancy assumption
- Monthly absorption rate (how many units lease up per month)
- Time to stabilization (typically 24-48 months for new facilities)
- Monthly rent assumptions
- Cash flow during the lease-up period (often negative)
- Working capital reserves to cover the lease-up period
A lender who sees you've planned for the lease-up period is much more likely to approve the loan than one who sees you've assumed instant 90% occupancy.
The financial models lenders accept
For SBA 504 and 7(a) loans on self-storage, the financial model needs to show:
- Detailed monthly pro forma for years 1-3
- Annual pro forma for years 4-10
- Sources and uses of funds at closing
- Sensitivity analysis (what happens if revenue is 10% lower, expenses are 10% higher, etc.)
- A break-even analysis
The SBA's resources include free templates and guidance for business plans.1 You don't need to pay a "business plan writer" for $2,000-$5,000. You can write a credible storage plan yourself in 1-2 weeks of focused work, with the SBA template, comparable property data from your broker, and the property's actual operating history.
Hire a CPA who has worked with self-storage operators to review the pro forma before you submit it to a lender. A CPA review costs $500-$1,500 and is one of the highest-leverage things you can do to improve approval odds. A pro forma with arithmetic errors or unrealistic assumptions gets the application thrown out.
What we'd actually do
For a first-time storage buyer evaluating an existing facility:
- Get the OM (offering memorandum) from the broker.
- Build the lean plan above using the seller's claimed numbers. This is your "best case" model.
- Build a "skeptical case" model that assumes 10% lower revenue and 10% higher expenses than the seller claims.
- If both models still produce a DSCR above 1.25x at the asking price with your planned financing structure, the deal might be worth pursuing.
- If the skeptical case can't support 1.25x DSCR, either negotiate the price down or walk away.
- Once you have a deal under contract, expand the lean plan into the full SBA package format with the lender's specific template.
Next steps
- How to Start a Storage Unit Business - the sequence of steps
- Cost to Start a Storage Unit Business - the cost side
- Is Owning a Storage Unit Business Profitable? - the revenue side
Or back to the Storage Unit Business guide for the rest.