When to use it
A supplier claim needs independent corroboration.
Property decision guide
Supplier Reference Checks: Claim, Permission and Corroboration
A reference check should test a relevant supplier claim against an authorized and identifiable source. A testimonial, a provided contact name or a general reputation is not proof that the proposed service matches the property’s requirements.
Choose the claim that matters to the assignment
Specify the service type, scale, delivery condition or handover capability you want to investigate. Ask why the claim matters to the proposed scope. A reference for a different service or period may provide context without establishing current capacity for this assignment.
Keep a short claim register: supplier statement, source offered, proposed verification and limitations. Do not request confidential customer records merely to make a comparison more detailed. Qualification, insurance or regulatory status needs its appropriate source and reviewer rather than a testimonial.
Confirm permission and establish the contact route
Agree an appropriate permission and contact process before communicating with a reference. Confirm identity through an independently established route where feasible instead of relying solely on a phone number or email copied into the proposal.
If a source is unavailable or declines to participate, retain that state as unavailable. It is not an automatic negative finding or proof that the supplier is dishonest. Never fabricate an interview, quote or customer opinion to fill the gap.
Ask comparable, bounded questions
Use the same relevant questions for candidates: what service was delivered, during which period, what acceptance process existed, and which limitations affect the source’s knowledge. Separate first-hand observations from an interpretation or second-hand report.
Record a proportionate summary with permission and source context. Do not turn a positive experience into a guarantee of future capacity or a complaint into a universal conclusion. Investigate material contradictions against the actual contract, staffing or delivery records where access is authorized.
Integrate evidence without manipulating the scorecard
Attach the supported conclusion and uncertainty to the applicable criterion. A new source can justify revising a rating, but the basis and model version should remain visible. Missing evidence and demonstrated failure are different states.
Retain the reference-check boundary alongside scope, cost, mandatory gates and transition readiness. The reference process is one input to an authorized selection, not the selection itself. The GAO source gives general federal control context and does not prescribe private-property procurement requirements.
Hypothetical worked example
A reference describes a different service
A fictional supplier provides a positive reference for a service outside the proposed scope. The source can be useful context without verifying the claimed capability needed here.
Original fictional example · no completed client assignment or property inspection is represented.
| Record to obtain | Review question or calculation |
|---|---|
| Proposed scope and supplier claim | Ask comparable questions tied to the claim |
| Authorized source and contact origin | Separate first-hand observation from interpretation |
| Service period and knowledge boundary | Preserve unavailable corroboration |
| Comparable answers and unresolved reference gaps | Ask the same bounded question of each authorized reference: what was delivered, under which conditions and what remained unresolved? Record a refusal or unavailable contact as missing information. A response about a different contract is context, not a substitute for the requested comparable evidence. |
Useful working output: A bounded claim assessment that does not invent an interview or capacity guarantee.
Adapt the record request to authorized access, governing documents and the actual property. The example does not verify any unknown input or replace a professional conclusion.
Proposal Scoring: Mandatory Gates and Weight Sensitivity · More vendors and management selection examples
Before acting on this guide
Set the review boundary and the acceptance test.
What the evidence does not prove
Do not infer overall competence from one favorable contact or an unverified introduction.
What to verify before acceptance
Record contact permission, independently established route, relevant experience, contradictory information and limits of the response.
Original proposed coordination checks · adapt to authorized access, the actual obligation and the appropriate professional review. These are not findings about your property.
Follow the related handoff workflow · Read the review definitions
A number, its evidence and the decision
Compare the service boundary before comparing the fee
A price difference is meaningful only when the proposals cover the same service quantities, exclusions and acceptance conditions. Required extras should remain visible beside the base fee.
Common scope
Fix quantities, visits, hours and exclusions.
Clarification
Obtain written answers to material differences.
Cost
Add start-up and required annual extras.
Selection
Review service evidence and authorized conditions.
A worked example with visible assumptions
A fictional $2,000 monthly fee means $24,000 in base cost. Add $3,000 of required annual extras and $1,000 start-up: $28,000 in year one. A $2,200 monthly proposal with $500 annual extras and no start-up totals $26,900. Confirm equivalent scope before interpreting the $1,100 difference.
Original hypothetical arithmetic example. The amounts describe a fictional scenario, not observed property performance or a recommended target.
Continue with Property Vendor Bid Comparison MatrixExplore the calculation
Enter non-negative values using the same scope and period. This calculation stays in your browser tab.
Identify the excluded work
A low fee can transfer supervision, equipment or specialist tasks to the property. Obtain the cost path before assuming a saving.
Keep evidence separate from scores
A numerical ranking cannot compensate for missing mandatory qualifications or an unverified service commitment.
Compare the contract period
Start-up and escalation change multi-year totals. Use the full on-page bid calculator when annual increases apply. Compare timing as well as totals. Two proposals can have the same total but require different deposits or payment dates. Keep the funding calendar separate from the cost ranking; a low total does not establish that the payment schedule is feasible.
Working checklist
Supplier Reference Checks: Claim, Permission and Corroboration checklist
A reusable control-definition worksheet. Add property-specific owners, dates, evidence links and status before using it as an action record.
These rows define suggested controls, not completed property findings. Interpret each check against your actual property records, responsible role and acceptance evidence. See the review instructions and reuse terms.
8 checks shown
No check matches those filters. Try a different term or area.
| Review area | Check | Evidence | Responsible owner | Acceptance evidence |
|---|---|---|---|---|
| Claim | Identify relevant supplier statement | Scope period and claimed capability | Procurement owner | Claim tied to actual need |
| Source | Identify proposed corroboration | Source identity and knowledge boundary | Reviewer | Evidence type explicit |
| Permission | Agree permitted contact | Authorization and disclosure limits | Procurement owner | No unapproved disclosure |
| Identity | Establish independent route | Verified contact origin | Reviewer | Proposal contact not sole identity basis |
| Questions | Use comparable questions | Service period acceptance and limitations | Reviewer | Same standard for candidates |
| Limits | Record unavailable or disputed evidence | Source response and open question | Review lead | Unknown not fabricated or scored as fact |
| Interpretation | Separate observation and inference | Proportionate source-linked summary | Reviewer | No universal capacity guarantee |
| Decision | Retain rating disposition | Evidence rationale and model version | Decision owner | Selection basis traceable |
Frequently asked questions
Does an unavailable reference prove a problem?
No. Record availability and the effect on the evidence base. Seek appropriate corroboration without inventing a result.
Can testimonials replace qualification checks?
Use the actual appropriate source for the required qualification or status. Testimonials answer a different, limited evidence question.
Primary references and scope
Confirm the applicable source and any later changes before a property-specific decision. The guide provides coordination controls; professional conclusions remain with the appropriate qualified reviewer.