Supporting Evidence & Documents

Section 1

Purpose

Supporting Evidence and Documents form the evidential foundation of any construction claim or dispute. The outcome of adjudication, arbitration, or litigation depends heavily on the quality, completeness, and contemporaneity of the evidence available. A well-prepared claim with robust contemporaneous evidence will consistently outperform a poorly evidenced claim regardless of the strength of the legal or contractual argument. The QS's professional obligation is to create, preserve, and organise evidence throughout the project — not to reconstruct it when a dispute arises.

RICS Conflict Avoidance and Dispute Resolution (2024) identifies good documentation as the single most effective tool for conflict avoidance: clear, complete, and agreed records at each stage of the project reduce the scope for later disagreement. The corollary is equally true: poor documentation is the principal cause of construction disputes being unresolvable without adjudication or litigation.

The QS's records fall into three categories: financial records (valuations, cost reports, variation assessments); contractual records (notices, instructions, certificates, correspondence); and programme records (progress reports, delay notifications, resource records). All three are essential for claim preparation and dispute resolution.

Section 2

Key Principles

Contemporaneity: evidence created at the time of the event is significantly more persuasive than records reconstructed later; adjudicators, arbitrators, and judges are sceptical of retrospective records.
RICS Conflict Avoidance and Dispute Resolution (2024): good records management is part of the minimum level of service; the QS should seek clarity in documentation to avoid ambiguity and manage disputes contemporaneously.
Civil Procedure Rules (CPR) and disclosure: in litigation, both parties are required to disclose all relevant documents (including those adverse to their case); the QS must be aware that all records — including internal emails, draft cost reports, and working papers — may be discoverable.
Without-prejudice privilege: documents marked 'without prejudice' in genuine settlement negotiations are protected from disclosure in proceedings; the QS should understand what attracts and what loses this privilege.
Expert evidence: where the QS is instructed as an expert witness (rather than as a party's advocate), the expert's report must be addressed to the tribunal and must comply with RICS Expert Witness PS (2nd ed., effective 2 January 2018) — including the obligation of independence and the overriding duty to the tribunal.
Electronic documents: construction claims increasingly rely on electronic records — emails, BIM models, project management software outputs; the QS should ensure electronic records are preserved in an accessible format.

Section 3

Practical Application

Step 1

At the start of the project, establish a document management protocol: all instructions, notices, site reports, cost records, and correspondence should be filed immediately in a structured, searchable system with consistent reference numbers.

Step 2

Maintain a Site Instruction Register, a Variation Register, a Correspondence Register, and a Cost Report Register throughout the project — these are the core evidence registers for any future claim.

Step 3

For each claim event as it arises, create a dedicated evidence file: collect all documents relating to the event (notices, instructions, correspondence, programme records, resource records, cost records) and cross-reference them.

Step 4

When preparing claim particulars, structure the evidence chronologically and by category: (i) documents establishing the event occurred (instructions, notices, programme records); (ii) documents establishing the financial impact (cost records, resource allocations, subcontractor invoices, overhead calculations).

Step 5

Where documents are requested under a formal disclosure process (adjudication/arbitration/litigation), ensure a complete and timely disclosure; withholding relevant documents is a serious professional and legal breach.

Step 6

Mark settlement correspondence clearly as 'without prejudice'; ensure commercially sensitive positions in settlement negotiations are not contained in 'open' correspondence that will be disclosed to the tribunal.

Step 7

Where the QS is instructed as an expert witness, prepare the expert report in accordance with RICS Expert Witness PS — independent, objective, addressed to the tribunal, with a statement of truth.

Section 4

Common Mistakes to Avoid

Creating backdated documents or altering contemporaneous records — this is fraud and will result in professional sanctions as well as seriously damaging the client's case if discovered.
Failing to retain internal working papers and draft documents — these may be disclosable and their absence (particularly if there is evidence they existed) can damage credibility.
Mixing 'without prejudice' content with 'open' content in the same document — this destroys the privilege protection; 'without prejudice' correspondence must be clearly separated.
Acting as both advocate and expert witness for the same party on the same matter — this is prohibited by RICS Expert Witness PS and conflicts of interest rules.
Poor organisation of the evidence bundle — an adjudicator who cannot navigate the evidence bundle efficiently will not give it the weight it deserves; evidence must be clearly indexed, tabulated, and cross-referenced.

Section 5

APC Competency & Quick Reference

Conflict Avoidance, Management and Dispute Resolution Procedures Level 3 — evidence preparation, disclosure, expert witness obligations
Data Management Level 2 — records management, electronic document management, disclosure obligations

What is the difference between contemporaneous and reconstructed evidence and why does it matter?

Contemporaneous evidence is created at the time of the event — site reports, daily diaries, progress photographs, payment notices, correspondence sent and received. Reconstructed evidence is prepared after the event, often specifically for the purpose of the dispute. Adjudicators and courts give significantly more weight to contemporaneous evidence; reconstructed records are viewed with scepticism and, if they conflict with contemporaneous documents, may be dismissed entirely.

What is without-prejudice privilege and when does it apply?

Without-prejudice privilege protects genuine settlement communications from disclosure in proceedings. It applies to written or oral communications made in the course of genuine settlement negotiations, where the communication is expressly or impliedly 'without prejudice'. It does not apply to admissions of fact or to documents that are in the ordinary course of business. The privilege is waived if both parties agree to waive it, or in limited circumstances (e.g. Calderbank offers where the tribunal considers costs).

What are the RICS obligations for a QS acting as an expert witness?

RICS Expert Witness PS (2nd ed., effective 2 January 2018): the expert's duty is to the tribunal, not to the party who instructs them; the expert must be independent and objective; the expert report must contain a statement of truth; the expert must not act as advocate on the same matter; the expert must identify the limits of their expertise; the expert must disclose any information that could affect their independence.

Section 6

Dispute & Claims Checklist

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Task

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Document management protocol established at project start

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Site Instruction, Variation, Correspondence, and Cost Report Registers maintained

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Dedicated evidence files created for each claim event as it arises

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Evidence structured chronologically and by category for claim preparation

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Disclosure obligations met — all relevant documents disclosed completely

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Settlement correspondence marked 'without prejudice' and separated

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Expert report prepared in accordance with RICS Expert Witness PS where applicable

Section 7

CPD Learning Outcomes

Establish and maintain a document management system throughout a construction project that creates a complete and contemporaneous record capable of supporting formal claim preparation and dispute resolution.
Apply the rules of evidence in construction disputes — distinguishing contemporaneous from reconstructed evidence, understanding without-prejudice privilege, and complying with disclosure obligations.
Prepare or review expert witness reports in compliance with RICS Expert Witness PS (2nd ed., effective 2 January 2018), maintaining independence and the overriding duty to the tribunal.

Section 8