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INDUSTRY FIELD GUIDE

Commercial lease expense-base records for AI testing

A building expense report may show several baselines.

By Fiund · Updated 2026-11-05

NAICS 531120 · Lessors of Nonresidential Buildings (except Miniwarehouses)

A building expense report may show several baselines. A reviewer needs to know which one the fictional lease identifies and which charges the example includes. GSA publishes commercial lease templates, and DOE’s Better Buildings program discusses lease provisions and tenant build-out. A lessor can use invented figures to evaluate document matching. GSA supplemental lease requirements example · DOE leasing and tenant build-out

Create a mock office lease with an expense baseline and a later amendment for a different suite. Include a building operating report with two years and an excluded line. Ask which baseline and lines the exercise says to use, and what evidence remains missing. Let a reviewer define the expected arithmetic. Do not ask the assistant to issue a charge.

Exclude addresses, tenants, leasing negotiations, actual rates, and operating invoices. Use a fictional building and independently authored clauses.

Describe an expense records exercise

Original Fiund exercise

Use the named suite's baseline and the stated expense exclusions

An independent fictional office clause defines simple practice arithmetic. It is not a real lease interpretation, invoice or charge calculation.

Fictional records supplied to the evaluator
RecordSourceWhat it records
EX1Suite A practice clauseUse year-1 eligible expense baseline of 100 units; exclude roof-project line from the comparison.
EX2Building reportYear 2: ordinary eligible expense 125 units; separate roof-project line 20. Year-1 eligible baseline remains 100.
EX3Suite B amendmentChanges Suite B baseline to 110. It does not name Suite A or supersede EX1.

Question for the model

What eligible expense difference follows for Suite A under the invented rule, and which tempting alternatives use unsupported scope?

Show the reference answer and checks

EX1 and EX2 define Suite A's comparison as 125 ordinary eligible units minus the 100-unit baseline, a 25-unit difference. The separately excluded roof line must not be added, and EX3's Suite B baseline does not change Suite A. This is only the difference specified by the fictional exercise; no allocation percentage, payable charge or authority to issue a bill is supplied.

  • Adding the excluded roof project and reporting a 45-unit difference.
  • Using Suite B's 110 baseline for Suite A or treating the difference as an authorized invoice.

Fields to preserve

Suite and governing clause
Identifies whose baseline applies.
Eligible and excluded expense lines
Makes the arithmetic scope inspectable.
Baseline year and amendment coverage
Prevents unrelated revisions from changing the comparison.

Test another case

Provide a Suite A amendment excluding a second line from a later year only. Require year-specific calculations with each exclusion cited.

Use made-up figures and independently written clauses. Exclude actual tenants, buildings, invoices, negotiations, rates and lease documents.

Download this fictional example and answer key (JSON)

Discuss a contribution

Describe the sources you control, the task they could support and what has already been checked. Use the existing-data assessment for an archive or the collection brief for a new recording project. The contributor agreement defines Fiund’s licensing authority and compensation. A guide or fictional exercise does not establish an accepted collection or a sale.

Primary sources and further reading