Case evidence · 3 minute read

Build a mortgage case file someone else can follow

A worked evidence map showing what happened, why a decision was made and what remains open.

The useful bit

A tidy folder is useful. A reviewable file also explains the decisions and points to the evidence behind them.

Who this is for: Advisers, case managers and reviewers in small mortgage firms. Apply your firm's or principal's own file standards and permission scope.

Start with a real task

Morgan's fictional purchase case moves from initial enquiry to completion. Sam is handing it to Alex. The map below is a navigation aid, not a full advice file or a substitute for the records your firm's activity requires. Keep source documents in the controlled case record and link to them from the map.

A routine you can adapt

  1. Adviser

    Establish the starting point

    Record the client's needs, circumstances and agreed scope of service. Note relevant dates, consent or acknowledgements where applicable, and any support that changes how the service should be delivered. Resolve contradictions before relying on the information.

    Keep: Dated fact find, source information, service disclosure and clarification notes.

  2. Adviser

    Connect a decision to its evidence

    Make it possible to trace a recommendation to the relevant assessment and records. Use your firm's required suitability process. An attachment labelled ‘final’ is not enough if the file does not show which version informed the decision.

    Keep: Assessment, rationale, supporting records, version and decision date.

  3. Outgoing and incoming case owner

    Keep the handover explicit

    List unresolved requests and conditions, their owners and dates. In Morgan's example, a received statement still needs review. The incoming owner confirms that responsibility has transferred rather than assuming a task notification was read.

    Keep: Handover note, acceptance, open conditions and client update commitment.

  4. Case owner and reviewer

    Close and sample the record

    Record the outcome and remaining follow-ups. A reviewer samples whether the file tells a consistent story and records any correction. Apply the appropriate retention and access rules; do not keep extra personal data merely to make the folder look complete.

    Keep: Outcome, review findings, corrective action and retention decision.

Filled example · fictional data

Morgan's evidence map — a fictional extract

Morgan's evidence map — a fictional extract
StageRecord to findDecision or statusOwnerOpen action
DiscoveryFact find and clarification noteIncome discrepancy needs clarificationAlexResolve before relying on figures
DocumentsStatement upload and request historyReceived; review pendingSamCheck completeness and escalate questions
RecommendationAssessment and rationaleNot yet completeAlexComplete firm's advice and suitability process
HandoverTask list and client updateSam to Alex acknowledgedAlexConfirm next client update date

The map is deliberately honest about unfinished work. A visible gap is more useful than a green tick that means only ‘a document exists’. Sample whether another authorised colleague can locate the record and explain the current status.

Free tools · no sign-up

Take it into your next review

Start with the completed example, or use the blank version with your firm's own information. CSV files open in Excel and other spreadsheet apps. Store any live case data in your firm's approved location.

One next step

Put it to work

Ask a colleague to review one case using only the record. Note what they had to ask you, then make that information easier to find for the next handover.

See a case handover in Achos

The product walkthrough illustrates the workflow. Your firm remains responsible for its advice, controls and decisions.

Further reading and editorial notes

Rule-to-case evidence and its supporting sources →

This article is an operational illustration, with fictional cases and figures. The linked reference guide contains the relevant primary-source links and scope notes. It does not replace current rules or advice specific to your firm.

What changed and who wrote it

Published 20 September 2026 by the Achos Editorial Team. Includes a worked routine, fictional example, editable templates and a product follow-through. This is an editorial resource; it has not been signed off by a named independent compliance reviewer.

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