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Version 1.0 · September 2026

The Woodyer Standard.

A public scale for the evidence behind any claim about a commercial property. Scroll, and watch one claim weighed.

D

Assumption

The claim on its own, said in conversation and written nowhere. It is recorded as an assumption, so it can never pass for a fact.

C

Indicative

One source, and it has an interest in the answer: the selling agent’s brochure. Useful, and marked so that it is never mistaken for more.

B

Corroborated

Two records that do not depend on each other agree, and neither gains from the answer.

A

Documented

The measured survey drawing itself: held, dated and attached, so that anyone can open it and check. Still not certain. Nothing is.

§ IThe four grades

  1. ADocumentedThe claim is held in writing from an official or primary source, it is dated, and the document itself is attached so that it can be opened and checked. The strongest ground there is.
  2. BCorroboratedTwo or more sources, independent of each other, agree, and none of them gains from the answer they gave. Reliable, and shown to be.
  3. CIndicativeA single source; or a source with an interest in the answer; or a figure worked out rather than stated. Useful, and marked so that it is never mistaken for more.
  4. DAssumptionNot checked. Stated plainly as an assumption, so that it cannot become a fact by being repeated further down the page.

§ IITwo questions, not one

How good isthe source? And hasanyone checked it?

A figure can come from an excellent source and still not have been checked against this building. So every value-critical fact in a Packet is placed on two axes: the grade of its source, and whether a named person has verified it against a document held on file.

Strong source · checked

Rely on it.

Strong source · not yet checked

Rely on it, and check it before exchange.

Weak source · checked

A person has confirmed it. Still weigh who they are.

Weak source · not checked

Do not price from it. It goes on the call sheet.

§ IIIThe rules

Rules that do notbend.

  • No document, no grade above D.If the source cannot be reopened, the claim is an assumption, however confident anyone feels about it.

  • Grades are lowered, never raised.Nothing later in the work may promote a claim. A step that makes evidence look stronger without adding any is the one to distrust.

  • Nothing is graded as certain.Records change and circumstances move. Certainty that has not been earned is the first thing a careful reader removes.

  • Judgement may only add caution.A view formed on top of the evidence can weaken a conclusion. It can never strengthen one.

  • Every figure traces to its grade.No number appears in the conclusions that cannot be followed back to the claim it rests on.

§ IVWhat moves a grade

What strengthens it

  • The document is held, not just described.
  • It is about this building, not the market in general.
  • A second source agrees, and does not depend on the first.
  • It is recent.

What weakens it

  • The source gains from the answer: a seller, an agent, a tenant in a negotiation.
  • The document is referred to but not held.
  • It is old, or it describes the market rather than this building.
  • Another record contradicts it.

§ VUsing the Standard

Free to use. Cite it as:

The Woodyer Standard, v1.0 (2026).
woodyer-capital.com/standard

Grades may be referred to individually by their anchor, for example /standard#grade-b. Changes are published as new versions; earlier versions are never altered.