A Business First, a Building Second
Self storage underwrites like an operating business that happens to own real estate. Leases run month to month, tenants churn constantly, and revenue moves with street rates rather than long term contracts, so lenders focus on the economics underneath the rent roll. The number a storage operator lives by is break even occupancy, and for leveraged facilities it generally falls in the low to mid 60% range, a floor low enough to make storage one of the more resilient asset classes through downturns. The other decisive input is supply. Storage demand is hyperlocal, most customers come from a short drive away, and lenders read the 3 mile supply picture and the new construction pipeline before they read much else. This page covers how storage deals actually get underwritten, which programs fit which phase of a facility's life, and where deals die. For program mechanics on SBA, bridge, and CMBS lending, see the related program pages.
Common Borrower Profiles
- First facility buyers moving into storage from other real estate who need a lender that underwrites the operating business, not just the building
- Owner operators who run the facility as their business, where SBA programs can apply in ways passive investors cannot use
- Developers building ground up or converting retail and industrial boxes to storage, carrying lease up risk that shapes the whole capital stack
- Value add buyers acquiring underperforming mom and pop facilities with below market rates, no revenue management, and thin marketing
- Portfolio operators weighing third party management platforms against self management as they scale across markets
Available Loan Structures
- SBA 7(a) and 504 for owner operators. The 7(a) program caps at $5 million with real estate amortization up to 25 years, and 504 pairs a bank first at 50% with a CDC second at 40% over a 10% down payment. Self storage is commonly financed through SBA programs for owner operators, with lenders treating storage operations as an active business rather than passive real estate.
- Conventional bank loans for stabilized facilities. Leverage generally runs 65% to 75% LTV with DSCR generally 1.30x to 1.35x, and closings generally take 45 to 90 days. Banks want seasoned economic occupancy and a supply picture that is not deteriorating.
- Bridge loans for acquisition and lease up. Facilities below stabilized occupancy generally cannot support bank debt, so bridge capital funds the purchase and carries the deal through lease up, with closings generally in 10 to 21 days and interest only terms while occupancy builds.
- Construction financing for ground up and conversion projects. Lenders generally require a third party feasibility study covering the 3 mile supply picture, meaningful sponsor equity, and an interest reserve sized to a lease up that generally runs 24 to 36 months to stabilization.
- CMBS for stabilized assets. Conduit lenders generally look for stabilized storage deals of $2 million and up, offering non recourse execution and cash out flexibility for owners who have finished the lease up work.
- Every self storage deal is underwritten on its own merits. The ranges above reflect where storage financing generally prices. Actual leverage, coverage requirements, and terms depend on the facility's economic occupancy, market supply, operating history, sponsor experience, and the specific lender.
Underwriting Considerations
- Physical versus economic occupancy, with a storage twist. Month to month leases mean constant churn, and units cycle through move ins, concessions, and delinquencies faster than any other asset class. A facility can post strong physical occupancy while discounts and unpaid units drag collected revenue well below potential, so lenders underwrite economic occupancy and read the gap between the two as a management quality signal.
- Break even occupancy is the number the whole deal rests on. For leveraged facilities it generally falls in the low to mid 60% range, driven by storage's thin operating load, no tenant improvements, no leasing commissions, minimal staff. Lenders stress the debt service against that floor, and a facility operating well above break even has room to absorb rate softness that would break other property types.
- In place income rules, pro forma income gets discounted. Lease up projections, planned rate increases, and expansion revenue are the first things a credit committee strikes. Lenders size permanent debt to trailing collections, and a buyer paying for pro forma in a lease up market generally needs bridge capital and a real plan to bridge that gap themselves.
- The 3 mile supply picture decides storage deals. Demand is hyperlocal, so lenders study competing square footage, per capita saturation, and the permitted pipeline within a short radius rather than metro level statistics. Markets that absorbed heavy new construction see street rates fall for everyone, and no operational skill fully offsets an oversupplied radius.
- Revenue management and platform choice shape the income story. Street rates for new customers and existing customer rate increases move independently, and sophisticated operators manage both continuously. Lenders also weigh third party management platforms against owner operation, crediting the platform's marketing engine and pricing systems while noting the fee load it adds.
- Every self storage deal is underwritten on its own merits. The ranges above reflect where storage financing generally prices. Actual leverage, coverage requirements, and terms depend on the facility's economic occupancy, market supply, operating history, sponsor experience, and the specific lender.
Common Challenges
- An overbuilt 3 mile radius. New supply hitting a market pushes street rates down across every competitor, and lenders walk from facilities in trade areas with heavy permitted pipelines regardless of how well the subject property operates.
- Paying for pro forma in a lease up market. Buyers who underwrite the seller's projections rather than trailing collections find that lenders will not follow them there, and the equity check grows to cover the difference.
- Climate controlled economics that do not pencil. Climate controlled units carry premium rates but cost meaningfully more to build and operate, and a unit mix that overweights climate control in a market that will not pay the premium erodes the revenue assumptions the loan was sized on.
- REIT rate competition during lease up. Institutional operators use deep teaser discounts to fill new facilities, and an independent leasing up against a REIT next door can see its projected rates undercut for quarters at a time.
- Zoning and entitlement resistance. Many municipalities restrict storage development on commercial corridors, and entitlement timelines stretch construction budgets before a single unit is built.
Why CapitalAx for Self Storage Deals
Storage lending is phase specific, and the lender that fits a stabilized facility is rarely the one that fits a lease up or a ground up build. Our network of 350+ lenders includes SBA shops that regularly finance owner operated storage, bridge lenders comfortable carrying facilities through lease up, construction lenders who know how to read a storage feasibility study, and CMBS desks for stabilized assets ready for non recourse debt. We match your facility's phase, economic occupancy, and trade area supply picture to the lenders actually built for it, then run the process so terms compete.
Related Loan Programs
Explore other property types we finance. Browse all property types.
Markets We Serve
Tools & Calculators
Self Storage Underwriting Calculator
Estimate revenue, NOI, value per unit, and maximum self storage loan proceeds.
Commercial Mortgage and Loan Amortization Calculator
Calculate commercial mortgage payments, total interest, and a month by month loan amortization schedule.
Commercial Land Value and Acquisition Calculator
Calculate land price per acre, usable acreage, total project cost, leverage, and required equity.
Construction Interest Reserve Calculator
Size interest reserve from the drawn balance, calculate loan to cost, and create an editable monthly draw schedule.
Frequently Asked Questions
Conventional lenders generally want to see stabilized economic occupancy, and physical occupancy generally in the 80% to 85% range, before writing permanent debt. Below that, bridge financing carries the facility through lease up. Economic occupancy matters more than physical, since concessions and delinquencies pull collected revenue below what the rent roll suggests.
Break even occupancy is the occupancy level at which a facility covers its operating expenses and debt service. For leveraged self storage facilities it generally falls in the low to mid 60% range, lower than most commercial property types because storage carries no tenant improvements, no leasing commissions, and minimal staffing. Lenders stress deals against that floor, and the distance between current occupancy and break even is a direct measure of the loan's margin of safety.
Through the 3 mile supply picture. Storage demand is hyperlocal, so lenders and their feasibility consultants study competing rentable square footage, per capita supply, street rate trends, and the permitted construction pipeline within a short radius of the facility. A strong facility in an oversupplied trade area is generally a harder deal than an average facility in an undersupplied one.
Self storage is commonly financed through SBA programs for owner operators, with lenders treating storage operations as an active business rather than passive real estate. The 7(a) program caps at $5 million with real estate amortization up to 25 years, and 504 pairs a bank first at 50% with a CDC second at 40% over a 10% down payment. SBA fits owners who operate the facility as their business, while passive investors use conventional, bridge, or CMBS paths.
Yes. Construction lenders active in storage generally require meaningful sponsor equity, a third party feasibility study demonstrating demand in the 3 mile trade area, and relevant sponsor experience. Lease up to stabilization generally runs 24 to 36 months, so lenders structure interest reserves and the conversion to permanent financing around that timeline.
Climate controlled units command premium rates and generally attract longer staying tenants, which lenders credit. They also cost more to build and operate, so underwriting tests whether the market actually pays the premium. The question is never which unit type is better but whether the facility's mix matches what its trade area demands.