Assess every commercial case on two tracks: covenant strength (will the income service the loan?) and security value (would a sale recover the debt?). Calculate cover from contracted income, not optimistic estimates; identify who borrows, who owns, and who guarantees; and support each conclusion with a specific document. Practise by writing short case memos against a fixed rubric until both tracks appear automatically.
From payslips to trading accounts: how borrower assessment changes
Commercial cases are assessed around a business: where repayment income comes from, which entity owns the property, and who is ultimately liable. Personal salary evidence is only one variant of the template, not the template itself.
In personal lending, income assessment starts from salary and payslips. In commercial work, the first question is what actually pays the mortgage: trading profit from accounts, contractual rent from an investment property, professional earnings, or a combination. Each source carries different volatility and needs different evidence, so naming the repayment source precisely is the first analytical step in any scenario.
The second shift is the borrower entity. A limited company limits recourse to its assets unless guarantees extend it; a special purpose vehicle may exist solely to hold one property; a partnership spreads liability among partners. The party signing the legal charge, the party generating the income, and the party you are assessing for covenant strength can be three different entities. Exam-style scenarios expect you to identify all three before calculating anything.
Covenant strength versus security value: two questions, not one
Covenant strength asks whether cash flow will service the loan; security value asks whether a sale would recover the debt in a reasonable timescale. A complete answer addresses both separately, then explains how they interact.
Covenant strength is a cash flow question. Its evidence includes the borrower's or tenant's financial standing, the reliability of contracted rent, lease term remaining, and the stability of the trade behind the income. A low loan-to-value ratio does not answer this question; a tenant with a strong covenant on a long lease can support a case that a weak covenant cannot, even at identical LTV.
Security value is a realisation question. Its evidence includes location, alternative uses, marketability, condition, and the valuation basis used. A property let to a fragile covenant can still be sound security if it would re-let or sell readily; conversely, a specialised building may realise far less than expected if it must be sold empty. The two tracks overlap only in the interaction: weak covenant plus poor marketability compounds, while one strength can partially offset the other.
The table below is a decision aid for classifying any fact pattern you meet in practice material: decide which track each piece of evidence belongs to before you interpret it.
| Assessment track | Core question | Primary evidence | Weakness it exposes | Typical mitigant |
|---|---|---|---|---|
| Covenant strength | Will the income service the debt through the term? | Accounts, passing rent, lease term, tenant covenant quality | Income falls, breaks early, or tenant fails | Personal or corporate guarantee, rent deposit, shorter loan term |
| Security value | Would sale recover the debt within a reasonable timescale? | Valuation report, location, condition, alternative uses, marketability | Specialised or illiquid property realises less than expected | Lower LTV, additional security, repayment via amortisation |
| Interaction | Do the two tracks compound or offset? | Unexpired term versus exit assumptions, re-letting prospects | Assuming a strong sale price despite a failing income | Stress the income case and re-check the exit route it implies |
Reading tenancy schedules before drawing security conclusions
A lease converts a building into an income stream. Term certain, rent, break clauses, repairing obligations and tenant covenants determine how dependable that income is, so tenancy detail must be assessed before valuation conclusions are drawn.
A tenancy schedule is a factual summary of the income: each tenant, the contracted rent, the lease start and expiry, any break dates, and repairing basis (for example, full repairing and insuring). In case practice, extract these items explicitly and in writing. A single-let office at one rent on a long lease behaves very differently from a multi-let property with staggered expiries and void risk between lettings.
Break clauses and short unexpired terms deserve particular attention in your interpretation. A break option gives the tenant a lawful route to end the income early, so contracted rent is dependable only to the break date. A lease close to expiry means the income may be re-let at a different level, after a possible void. Neither makes a case un lendable; both change which conditions, term length, or stress assumptions a well-reasoned recommendation should carry.
Worked scenario: cover calculated from contracted rent, not estimates
Cover metrics test whether income exceeds interest with headroom. Calculate from contracted, sustainable income against interest at a realistic rate, not from property value or optimistic estimates, and interpret the result alongside LTV rather than instead of it.
Worked example (illustrative figures): an office property valued at 2.4 million is let at a passing rent of 132,000 per year on a ten-year lease with seven years unexpired and no break. A loan of 1.44 million at 6.5 percent gives annual interest of 93,600, so interest cover on contracted rent is roughly 1.41x, and LTV is 60 percent. The plausible mistake: a candidate reaches for the valuer's estimated rental value of 150,000 and states cover of about 1.60x.
The better decision is to run the calculation on passing rent, because covenant today rests on what the tenant is contractually obliged to pay. The estimated rental value is an opinion about the market, useful for a secondary observation about reversion, not for current servicing capacity. Stating both figures and labelling them correctly matters: an assessor who conflates passing rent with estimated rental value has inflated the income case without changing a single fact. Note in the memo that at lease expiry the income may reset, and link that to the residual term rather than leaving it unexamined.
Worked scenario: structuring an owner-occupied purchase with weak trading history
Structure the case around who owes what: which entity holds the charge, whether guarantees extend recourse, and which conditions close the gaps. Strong security never substitutes for a clear, enforceable repayment path.
Worked example (illustrative): a two-director limited company with three years of trading history wants to buy a small industrial unit to occupy, borrowing 55 percent of the purchase price. The plausible mistake is recommending approval purely on the property, reasoning that the unit could be let to another occupier if the business fails. That converts an owner-occupied case into an assumed investment case that has not actually been assessed.
The better decision tests the actual repayment source: the company's trading profits, evidenced by its accounts, with attention to profit stability and the directors' drawings. Structure follows: personal guarantees from the directors extend recourse beyond the company's limited liability; a condition for up-to-date accounts keeps the covenant under review; and the memo records that a specialised unit, if empty, may take longer to re-let or sell than a standard investment property, so the exit assumption is stated rather than implied. The recommendation becomes defensible because each gap in the primary repayment route has a named, evidenced response.
Documentation, process and professional standards in a commercial file
Each stage of a case generates specific evidence: enquiry notes, valuation report, accounts, searches and clear offer conditions, plus records showing the customer's needs and the reasoning behind the recommendation. Professional standards apply to commercial work, not only to regulated lending.
A useful discipline is mapping every conclusion in your case memo to a document. The income conclusion points to accounts or a tenancy schedule; the security conclusion points to the valuation report; the structure conclusion points to the proposed charge, guarantees and conditions. If a conclusion has no supporting document behind it, that is the gap to close before the recommendation is complete. This mapping is also exactly how you should check your own practice answers.
Standards in commercial work include managing conflicts of interest, handling client information confidentially, and treating commercial customers fairly even where conduct rules differ from the regulated residential regime. It also includes recognising boundaries: some cases can raise questions about whether lending falls inside or outside regulated mortgage activity, and a competent professional identifies the question and refers it, rather than improvising an answer. For administrative details of the qualification itself, such as registration and assessment arrangements, refer to the awarding organisation's own site.
A preparation sequence and a reusable case-memo rubric
Build fluency in layers: concepts first, then calculations, then document reading, then timed case memos. Apply a fixed rubric to every practice case so gaps in your two-track reasoning become visible and fixable rather than incidental.
An adaptable sequence, shown here as a six-week illustration you can stretch or compress: weeks one and two, core concepts (entities, repayment sources, covenant versus security, lease mechanics) with short summaries in your own words; week three, calculations, writing cover and LTV results as single labelled sentences; week four, document reading, extracting tenancy schedules and valuation summaries; weeks five and six, timed case memos under the rubric below, one every few days, reviewing each against the checklist before starting the next.
Practical exercise with a self-check rubric: write a fictional one-page case brief (borrower entity, property, tenancy, accounts summary, loan request). Draft a ten-line memo: borrower and obligor, repayment source, covenant verdict, security verdict, cover and LTV, risks, mitigants, conditions, recommendation. Score one point each for: entity correctly identified; repayment source named; cover on contracted income; LTV stated separately; lease breaks and unexpired term addressed; security marketability discussed; each risk paired with a mitigant or condition; recommendation consistent with the preceding lines. Expected observation on your first pass: the break clause and the borrower-versus-obligor distinction are the items most often missing, which the rubric makes visible on the second pass.
- Readiness check: you can write a two-track verdict (covenant and security) for a simple case in under five minutes.
- Readiness check: you can compute interest cover and LTV and state both in one correctly labelled sentence.
- Readiness check: you can explain the difference between passing rent and estimated rental value, and say which supports which conclusion.
- Readiness check: for any fact pattern, you can name the document that supports each line of your memo.
- Readiness check: you can list three conditions that would strengthen a case with a short unexpired lease, and say what each one protects against.
References and further reading
Use these references to explore the concepts and check the latest information from the relevant organizations.