Data Centre Commercial Mortgage Rates DSCR UK
UK data centre commercial mortgage rates in 2026 sit between 5.75% and 8.5% per annum, but the headline rate tells you almost nothing useful on its own. Pricing is driven by a tight cluster of variables that get less coverage in standard guides than they deserve: the tenor of the master service agreements (MSAs) underpinning your income, the credit profile of your anchor customers, your asset's tier rating and PUE, your location relative to AI Growth Zones, and how exposed your operating margin is to wholesale electricity prices. This guide is a working broker's view on how those variables actually move pricing in 2026, with two worked examples and a stress-test framework you can run before you ever speak to a lender.
FD Commercial arranges UK data centre commercial mortgages from £1,000,000. The £1m to £50m segment is where we work; we are not the broker for hyperscale syndicated debt at £200m+, and we will say so on the first call.
What rate should you expect on a UK data centre commercial mortgage in 2026?
Three things drive the rate. The cleanliness of your income (long, contracted, investment-grade), the position of your asset (London prime, regional colocation, edge), and the strength of your operator track record. Get all three working together and you are at the bottom of the range. Miss one and you move 100 to 200 basis points wider. Miss two and you are with debt funds at the top of the range, paying for the lender to underwrite a story instead of a balance sheet.
| Profile | Indicative rate (2026) | LTV | Lender type |
|---|---|---|---|
| Hyperscale-tenanted, 10-yr+ MSA, prime location, experienced operator | 5.75% to 6.25% | 65% to 75% | UK clearing banks |
| Regional colocation, mixed customer base, 5-yr avg MSA, 2nd-gen operator | 6.25% to 7.5% | 60% to 70% | Challenger banks, infrastructure funds |
| Edge or modular, 2-3 customer base, 3-yr avg MSA, growth-stage operator | 7.0% to 8.5% | 55% to 65% | Specialist commercial lenders, debt funds |
| First-generation, partial let, recently stabilised | 8.0%+ | 50% to 60% | Debt funds, private credit |
Pricing is typically structured as a margin over the Bank of England base rate (currently 3.75%) on floating-rate facilities, or a fixed coupon on fixed-rate facilities. Most operators take a hybrid: the first 5 to 7 years fixed, then a margin reset. Arrangement fees run 1% to 2.5%, with the lower end on clearing banks and the higher end on debt funds. Don't waste time on lenders who only quote a coupon; the all-in cost is the rate, the fee, and the covenant package combined.
One observation worth airing. The headline rate is rarely where the deal is won or lost. We have seen operators select a 50 bps cheaper offer with restrictive covenants and lose more in operational flexibility over the loan term than the saving was worth. The cheapest senior debt is not always the lowest blended cost of operating capital. Look at the whole package.
How is DSCR calculated on a data centre asset?
Debt service coverage ratio (DSCR) is the central calculation in every data centre commercial mortgage application. The formula is simple. The judgement around it is not.
DSCR = Net Operating Income (NOI) / Annual Debt Service.
Net Operating Income on a data centre is contracted MSA revenue (rack-space, power resale, network connectivity, cross-connects, remote hands) minus the operating costs that the operator carries before debt: power purchase, M&E plant maintenance, network connectivity, security, staff, insurance, business rates, and corporate overhead allocation. What you do not deduct is debt service, depreciation, or capex. Those sit below the NOI line.
Annual Debt Service is interest plus principal where amortising, or interest only where the facility is interest-only (the standard structure on data centre commercial mortgages). For a £5m facility at 6.5% interest-only, annual debt service is £325,000.
Standard minimum DSCR for UK data centre commercial mortgages in 2026 is 1.25x to 1.35x. The cushion exists because lenders stress test cash flow against three real risks. First, power cost increases that erode operator margin if MSAs do not include power pass-through. Second, customer non-renewal at MSA expiry, particularly on assets with concentrated tenant exposure. Third, tenant covenant downgrade where a customer's parent rating drops mid-term.
Where lenders apply pressure on the calculation is on what counts as NOI. We have had lenders strip out cross-connect revenue (treating it as ancillary), strip out customer-funded build-outs (capex repayment, not income), and strip out non-recurring fees. The first time we saw a lender propose to strip out remote hands revenue was a surprise; now it is standard. Operators who categorise their revenue cleanly in their management accounts make the lender's job easier and price better as a result.
Why does MSA tenor matter more than LTV on data centre mortgages?
On most commercial property, LTV is the dominant variable. On data centres, MSA tenor is. Here is why.
A commercial property lender underwriting a multi-let industrial estate at 60% LTV is looking at WAULT (weighted average unexpired lease term) of perhaps 5 years across 10 tenants. The diversification absorbs single-tenant departures. The asset is fundable because no one tenant carries the deal.
A data centre lender underwriting a 2 MW edge site at 60% LTV with three customers might have a single anchor tenant carrying 50% of revenue on a 3-year MSA. If that customer doesn't renew, half the income disappears. The lender prices for that risk regardless of LTV. Drop the same site to 50% LTV, and it still prices wide because the exposure on tenor concentration is unchanged.
What this means in practice. Operators chasing 70% LTV on 3-year MSAs are pushing on the wrong variable. Operators who restructure their customer book to extend MSA tenor before refinance, even at a small revenue concession to the customer, end up with cheaper debt and more LTV. We have run the numbers on this with several operators. A 24-month MSA extension is worth 50 to 100 basis points of margin on most cases. Time spent renegotiating MSAs before approaching lenders is time well spent.
How do tenant covenants affect data centre mortgage rates?
Tenant covenant strength is the second-most-important variable after MSA tenor. Investment-grade customers, defined as those with credit ratings of BBB- or above from S&P or Moody's, attract the strongest lender appetite at the tightest pricing. Hyperscalers, large enterprise customers, and government-backed entities are the cleanest covenants in the market.
Mid-market customers (private companies with established trading history, audited accounts, and demonstrable cash flow) make up the bulk of UK regional colocation income. These price wider than investment-grade, but lenders are comfortable with diversified mid-market portfolios where the top customer is no more than 30% of revenue. Concentration risk hurts pricing more than mid-market quality does.
Where pricing widens materially is on growth-stage tech customers, neocloud operators, and crypto-adjacent businesses. Lenders apply specific risk premia to these because their commercial volatility is high and their MSA renewal probability is harder to model. We have seen sites with two strong investment-grade tenants and one neocloud anchor price wider than expected because the lender focused on the neocloud concentration. Fair? Probably. Avoidable? Yes, by structuring the customer book differently before refinance.
One uncomfortable observation. Lenders care less about ESG positioning of your customers than they care about credit quality. A site full of non-investment-grade renewable energy companies prices wider than a site full of investment-grade defence customers. This is not how the marketing works; it is how the credit committees work.
What does Tier rating do to your pricing?
Tier rating is the Uptime Institute classification of data centre redundancy and uptime guarantees. Four tiers exist; in commercial mortgage lending, Tier II to Tier IV is the relevant range.
| Tier | Redundancy | Uptime guarantee | Pricing impact |
|---|---|---|---|
| Tier II | Partial redundancy on power and cooling | 99.741% (22 hrs annual downtime) | 50 to 100 bps wider, lower LTV |
| Tier III | N+1, concurrently maintainable | 99.982% (1.6 hrs annual downtime) | Standard pricing baseline |
| Tier IV | 2N+1, fault-tolerant | 99.995% (26 mins annual downtime) | 25 to 50 bps tighter on prime tenants |
Most UK colocation is Tier III. Hyperscale single-customer assets often run higher, sometimes purpose-built to Tier IV with specialist customer requirements. Tier II edge is fundable but commands a margin premium because customer SLAs are weaker, and weaker SLAs mean weaker pricing power on MSA renewal, which feeds into lender stress tests.
What we have seen change in 2026 is more lender attention on PUE (Power Usage Effectiveness) than on raw Tier rating. PUE measures total facility power divided by IT equipment power; closer to 1.0 is better. Sites at PUE 1.3 to 1.4 are increasingly favoured by sustainability-linked loan facilities. Sites at PUE 1.6 and above are facing pressure on margin even where Tier rating is strong. The market is repricing operational efficiency in real time.
How does AI Growth Zone status and location affect lending?
Location matters more than it used to. Three things drive the location overlay.
AI Growth Zones. The UK government has designated specific locations as AI Growth Zones to accelerate AI infrastructure delivery. Sites within a Zone receive prioritised grid connection, expedited planning, and broader policy support. For lenders, AI Growth Zone status is a positive signal on power security and time-to-power. It does not change underwriting fundamentals. It does materially reduce the build and stabilisation risk, which improves pricing and LTV on assets being refinanced after construction.
Grid connection availability. London, the South East, and the Thames Valley remain capacity-constrained on grid connection. Sites with secured connection contracts in these areas attract premium pricing on the asset side because new supply is scarce. Sites in regional locations with abundant grid (the North East, parts of Scotland, parts of Wales) price differently; the asset valuation is lower per MW but the operational economics can be stronger because power costs are sometimes lower.
Customer location preference. Hyperscalers and enterprise customers have specific location preferences driven by latency, redundancy zones, and customer data residency. A 5 MW site in West London with secured grid connection, prime fibre, and proximity to a hyperscale availability zone prices very differently from a 5 MW site in a regional industrial estate, even at the same Tier rating and PUE. Location is value.
What this means for refinance pricing. Operators who chose their site well before construction will see the benefit at refinance. Operators who chose a site for cheap land, away from grid, fibre, and customer demand, will struggle to attract the tightest pricing regardless of how operational the asset is.
How does electricity pricing affect your DSCR and refinance prospects?
Power is the single largest variable operating cost on a UK data centre, and it is the variable lenders stress most aggressively. Three structures determine how exposed your DSCR is to power price movement.
Full pass-through MSAs. The customer pays power consumed at metered cost plus a margin. The operator's exposure to wholesale power movement is essentially zero. This is the cleanest structure for lender purposes and supports the highest LTV.
Capped pass-through MSAs. Power cost is passed through up to a ceiling, with the operator absorbing increases above the cap. Common in mid-market colocation where customers want budget certainty. The operator carries tail risk on extreme price movement; lenders model this in stress testing.
Inclusive (no pass-through). Power is included in the all-in MSA price. The operator carries 100% of wholesale power risk. Common on legacy MSAs and some growth-stage customer agreements where the customer wants simplicity. This is the structure that hurts refinance pricing most.
Lenders typically stress-test DSCR against a 15% to 25% wholesale power cost increase over the loan term. Operators with full pass-through clear the stress test trivially. Operators with inclusive MSAs sometimes fail stress tests at the headline DSCR they were running, which leads to lower LTV at refinance. The fix is contractual, not financial: insert pass-through clauses on MSA renewal. This is one of the most material things an operator can do to improve their refinance position.
Renewable PPAs help. Operators with contracted renewable power purchase agreements at fixed pricing for 10+ years are insulated from wholesale movement on their PPA-covered tranche. Lenders favour these structures both for ESG reasons and for stress test outcomes. We have seen 25 to 50 basis points of margin step-down on sustainability-linked loans where the borrower meets renewable PPA coverage targets.
ABS, securitisation, and the institutional-scale alternative
For operators with three or more stabilised assets and audited operational track record, asset-backed securitisation (ABS) sits alongside straight commercial mortgage finance as a refinance route. ABS is not for everyone; it suits portfolios, not single sites, and the legal and structuring costs only make sense above £100m of debt.
The structure works like this. The operator pools the income from multiple data centre assets into a special purpose vehicle. Notes are issued to capital markets investors, secured against the pooled cash flow. LTV reaches up to 70% of asset value, pricing approximates senior bank debt minus 25 to 50 basis points, and term lengths can reach 10 to 25 years. The 2024 £600m UK securitisation backed by two operational data centres in Wales is the prototype for the UK market. The €640m German equivalent in 2025 confirmed the model.
For the £1m to £50m operators we typically advise, ABS is not the right tool yet. But it is the destination tool for operators building portfolios with the intent to scale. We will model the path from single-site commercial mortgage to portfolio ABS where the strategic intent is clear, so the early-stage debt structure does not block the long-term refinance route.
Worked examples: three operator profiles
Worked example 1
Refinancing a hyperscale-tenanted single-customer asset.
An operator owns a 12 MW data centre tenanted to a single hyperscale customer on a 12-year MSA with full power pass-through. NOI £8.2m. Current debt £42m at construction-era pricing. Stabilised valuation £75m.
Refinance brief: £52m at 70% LTV, 15-year fixed term, interest-only. DSCR at 6.0% indicative rate is 8.2 / 3.12 = 2.63x, well above the 1.30x minimum. Customer covenant investment-grade. Stress tests trivial.
Outcome: UK clearing bank quotes 5.75%, 1.0% arrangement fee, 15-year fixed. Indicative annual cost £2.99m senior debt. Operator releases £10m equity to deploy on a JV development at site two. All figures indicative.
Worked example 2
Regional colocation, mixed customer book, second-generation operator.
Operator owns a 6 MW colocation site in regional England with 14 customers. Top three customers represent 55% of revenue (one investment-grade, two mid-market). Average MSA tenor 4.5 years. Capped pass-through on power. NOI £3.1m. Stabilised valuation £24m.
Refinance brief: £14.4m at 60% LTV, 10-year term with 5-year fix. DSCR at 6.75% is 3.1 / 0.97 = 3.20x. Stress test 25% power cost increase reduces DSCR to 2.65x. Stress test customer non-renewal on top customer reduces DSCR to 2.10x. All comfortably above 1.30x.
Outcome: Two challenger banks compete; operator selects 6.75%, 1.5% arrangement fee, 5-year fixed reset, with quarterly DSCR reporting. Indicative annual cost £972,000. Operator uses freed cash flow to extend MSAs on next renewals before refinance window in year 5. All figures indicative.
Worked example 3
Edge data centre, growth-stage operator, partial let.
2 MW prefabricated modular edge site, three customers, top customer 65% of revenue on a 3-year MSA. Inclusive power pricing on two of three MSAs. NOI £1.3m. Stabilised valuation £6m.
Refinance brief: £3.6m at 60% LTV, 10-year term. DSCR at 7.5% indicative is 1.3 / 0.27 = 4.81x at headline. Stress test customer non-renewal of top customer drops DSCR to 1.69x. Stress test 25% power cost increase on inclusive MSAs drops DSCR to 1.45x. Combined stress 1.10x, below minimum.
Outcome: Lenders flag the stress test failure. We restructure the brief: customer concentration addressed by introducing pass-through clauses on MSA renewal in 9 months, plus a 10% lower target LTV at 50% (£3.0m). Restructured stress test passes. Specialist commercial lender quotes 7.5%, 2.0% fee, 10-year term. Operator commits to MSA pass-through restructure as a condition. All figures indicative.
Frequently asked questions
What is the cheapest commercial mortgage rate available on a UK data centre in 2026?
Tightest pricing in 2026 sits around 5.75% per annum on hyperscale-tenanted, 10-year-plus MSA, prime location stabilised assets at 65% to 75% LTV from UK clearing banks. ABS on a stabilised portfolio of three or more sites can price 25 to 50 basis points tighter again. Below 5.75% on a single-asset deal is rare.
Can I get a fixed-rate data centre commercial mortgage?
Yes. Fixed terms of 5, 7, or 10 years are widely available, beyond which most lenders prefer floating-rate or fixed-with-margin-reset structures. Hybrid structures (fixed for 5 to 7 years, floating thereafter) are the most common choice on 15-year facilities.
How much equity will I need to release on a data centre commercial mortgage refinance?
Depends on your refinance objective. Equity release is typical where the asset has appreciated above original cost and the operator wants capital for the next site. Refinances at 60% to 65% LTV against stabilised valuations often release 10% to 25% of original equity. Some operators refinance for term certainty without equity release; both routes are common.
Can I refinance from development finance to a commercial mortgage on day one of operation?
Not on day one in most cases. Lenders want 6 to 12 months of stabilised operating income, signed MSAs covering 60% to 80% of designed capacity, and audited or management-account-evidenced operating performance before underwriting at full term mortgage rates. Operators sometimes use a stretch facility for 6 to 12 months between development finance exit and full commercial mortgage drawdown.
What government incentives apply to UK data centre operators?
Critical National Infrastructure designation since September 2024 unlocks dedicated security and continuity support. Nationally Significant Infrastructure Project planning routes accelerate consent on large schemes. AI Growth Zones receive prioritised grid connection. Climate Change Agreements (negotiated by techUK) reduce energy taxation for sites meeting energy efficiency targets. Innovate UK and the British Business Bank fund AI infrastructure innovation indirectly.
What is the difference between an IFRS 16 lease and an MSA from a lender's perspective?
An MSA is typically structured as a service agreement, not a lease, and customer payments may not appear on the customer's balance sheet under IFRS 16 in the same way as a property lease. For your lender, the substance matters more than the form: contracted, recurring, secured income with defined termination rights and dispute resolution. The accounting treatment doesn't change the underwriting; the contractual strength does.
Are interest-only data centre mortgages available?
Yes. Interest-only is the standard structure on UK data centre commercial mortgages because operators need positive operating cash flow for plant replacement capex, capacity expansion, and the next site. Term lengths of 10 to 25 years are typical. Some lenders include partial amortisation in years 11 to 15 to reduce balloon at maturity.
How long does a data centre commercial mortgage take to arrange?
Typically 12 to 16 weeks from initial submission to drawdown. Variables include asset complexity, sponsor preparedness, surveyor turnaround, and lender bandwidth. A clean data room at submission, signed MSAs available immediately, and resolved title and planning can compress the process to 8 to 10 weeks.
All rates and figures shown are indicative only and subject to lender assessment, sponsor profile, asset quality, customer covenant, and market conditions. Rates may change without notice. Your property may be repossessed if you do not keep up repayments on a mortgage or other loan secured against it.
FD Commercial arranges UK data centre commercial mortgages from £1,000,000. Call us to discuss your asset, confirm lender appetite, and get indicative terms.
Call 03300 100315