Mortgage guide
Self storage mortgage
A self-storage business mortgage is a specialist form of commercial mortgage used to purchase, refinance, or raise capital against self-storage facilities, including container storage sites, warehouse-based storage, and purpose-built self-storage centres. While self-storage is an operational business, lenders increasingly view established facilities as attractive, income-resilient assets due to diversified income streams and strong demand.
- Published
- 13 Apr 2026
- Last reviewed
- 11 Sep 2026
- Reading time
- 3 min
Self storage mortgage
A self-storage business mortgage is a specialist form of commercial mortgage used to purchase, refinance, or raise capital against self-storage facilities, including container storage sites, warehouse-based storage, and purpose-built self-storage centres. While self-storage is an operational business, lenders increasingly view established facilities as attractive, income-resilient assets due to diversified income streams and strong demand.
Who Uses Self-Storage Mortgages
Self-storage business mortgages are commonly used by:
- Owner-operators acquiring or refinancing storage facilities
- Investors purchasing income-producing self-storage assets
- Businesses expanding existing sites or acquiring additional locations
- Developers refinancing stabilised self-storage conversions
Both single-site operators and multi-site groups can be considered, subject to track record.
Loan-to-Value (LTV)
Commercial mortgages for self-storage businesses are typically available at up to 65-75% loan-to-value, depending on operational maturity and income stability.
LTV is influenced by:
- Length of trading history and occupancy levels
- Income diversification across customers
- Type of facility (container, warehouse, purpose-built)
- Location, access, and local demand
- Strength of management and systems
Stabilised, purpose-built sites with high occupancy attract stronger leverage than start-ups or container-only models.
Affordability and Lending Assessment
Affordability is assessed on a going-concern basis, with lenders focusing on:
- Gross and net operating income
- EBITDA and cash flow sustainability
- Customer churn and pricing power
- Cost structure, staffing, and marketing spend
Debt Service Coverage Ratios (DSCR) are applied conservatively, with lenders often discounting early-stage or rapidly growing income.
Valuation Methodology
Self-storage valuations are typically income-led, reflecting the trading performance of the business rather than property value alone.
Valuers consider:
- Sustainable net operating income
- Occupancy trends and pricing stability
- Facility specification and security
- Competitive environment and barriers to entry
Underlying vacant possession value may be used as a secondary benchmark, particularly for warehouse-based facilities.
Interest Rates and Loan Terms
Self-storage mortgage pricing reflects both property and operational risk. Rates and terms depend on:
- Loan-to-value ratio
- Income stability and maturity of the business
- Borrower experience and scale
- Asset quality and location
Loan terms typically range from 15 to 40 years, with repayment and interest-only options available for established operations.
Commercial mortgage criteria
Self-storage lenders will closely assess:
- Degree of automation and management efficiency
- Customer diversification and contract structure
- Exposure to new competition
- Planning status and permitted use
Facilities with strong branding, technology-driven management, and stable occupancy are viewed most favourably.
A self-storage business mortgage provides specialist commercial finance for an increasingly popular and resilient asset class. Well-established self-storage facilities with diversified income, strong occupancy, and experienced operators can secure long-term funding at competitive loan-to-value levels under commercial lending criteria.
Commercial mortgage calculator
Choose owner occupier for a business buying or refinancing premises it trades from, assessed on adjusted net profit before tax from the latest accounts, or investment for property let to tenants, assessed on lease income.
Commercial mortgage criteria
For context, these are the wider product terms covered by this guide. Availability and eligibility depend on your circumstances and the lender.
| Criteria | Detail |
|---|---|
| Max Loan to Value (LTV) | 80% LTV Care Home Mortgages, 100% LTV Medical Commercial Mortgages, 75% Commercial Investment |
| Max Term | Up to 40 years |
| Completions | From 4 weeks |
| Repayment options | Capital repayment and Interest only |
| Commercial mortgage rates | From 6.19% |
| Rate options | Variable, Base Rate Tracker, 2, 3 or 5 year fixed mortgage options |
| Valuation methods | Going concern/Investment (Market value 1, MV1), MV2, MV3 or bricks and mortar |
| Flexible Leases | Rolling leases, weak covenants and short time remaining accepted |
| Adverse credit | Accepted on some products on a case by case basis |
| Locations | Available in England, Scotland, Wales and Northern Ireland |
| Experience | Not required on certain products |
For context, these are the wider product terms covered by this guide. Availability and eligibility depend on your circumstances and the lender.
| Feature | Detail |
|---|---|
| Max Loan to Value (LTV) | 65% |
| Product fee | 5% (4.74% for existing customers) |
| Fixed rate (5 years) | 6.34% |
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Frequently asked questions
What is a commercial mortgage?
A commercial mortgage is an asset-backed loan secured against commercial, semi-commercial or large-scale investment property. Lenders assess it on income sustainability and asset risk rather than personal income multiples, and pricing is set case by case, usually as a margin over Bank Rate.
What deposit does a commercial mortgage need?
On the cases we arrange, investment property typically needs a deposit of 25% to 40%. Owner-occupied retail lending can reach 80% loan-to-value, and on medical, dental and pharmacy transactions we currently see a number of options at up to 100% of an MV3 valuation, so no deposit may be needed on the right case. That reflects our experience of the current market, not a standard lender rule.
Can I get an interest-only commercial mortgage?
Yes, selectively. In our experience interest-only commercial lending typically goes up to 75% loan-to-value, through specialist and challenger lenders, where the income comfortably covers the debt and the exit is credible. High-street lenders generally require capital repayment.
How much can I borrow on a commercial mortgage?
The lower of two caps. The first is affordability: in our experience investment property needs stressed rental coverage of 125% to 145%, and an owner-occupier's business EBITDA must cover the repayments 1.25 to 2 times. The second is loan-to-value, which in our experience runs at 60% to 75% for most sectors.
Is stamp duty different on commercial property?
Yes. In England and Northern Ireland, commercial and mixed-use purchases pay stamp duty at the non-residential SDLT rates, a separate schedule with no additional-dwelling surcharge, so mixed-use classification can change the tax materially. Scotland has its own Land and Buildings Transaction Tax and Wales its own Land Transaction Tax.
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