Commercial use requires a license.

IAN HELFRICH PROPERTY LAB: NONCOMMERCIAL USE AND COMMERCIAL LICENSING
Version 1.0, September 12, 2026

Rights holder: Dr. Ian Helfrich
Commercial licensing contact: https://ihelfrich.github.io/contact/

1. Scope

These terms apply to the original software, interface, documentation and other
copyrightable expression in the St. Louis City & Property Lab that Dr. Ian
Helfrich owns or is authorized to license (the "Tool"). They include the
authored property-map, property-research and financial-scenario components
served at https://ihelfrich.github.io/st-louis/ and their corresponding original
source files. All rights not expressly granted are reserved.

These terms do not claim ownership of public facts or independently obtained
government records. They do not replace the licenses or terms of third-party
code, fonts, imagery, maps, datasets or services. Those materials retain their
own notices and terms, including any applicable attribution and share-alike
requirements. Earlier rights validly granted under another license remain
subject to that license. Other portions of Ian Helfrich's website are outside
the scope of this notice unless they expressly incorporate it.

2. Noncommercial permission

You may access and use the hosted Tool without a fee for personal, educational
or community research that has no commercial purpose. This limited permission
includes temporary browser copies needed to use the hosted Tool. It does not
grant a general right to redistribute, sublicense, sell, or operate a competing
hosted copy of the original Tool. Any rights granted separately by a third-party
license or applicable law remain unaffected.

3. Commercial use requires a separate written license

You must obtain a written commercial agreement signed by Dr. Ian Helfrich before
any commercial use of the Tool. Commercial use includes use for a business,
investment, brokerage, property acquisition or development, paid consulting,
client deliverable, revenue-generating service, resale, or commercial product
integration. Internal business use and use that indirectly supports commercial
activity are included, even if the Tool itself is not resold.

Public availability of this website or its source is not permission for
commercial use. A noncommercial permission cannot be used to avoid obtaining
a commercial license.

4. Two-part commercial tariff

The commercial agreement must specify both:

  (a) a base license fee; and
  (b) a percentage-of-sales royalty.

The resulting fee structure is F + r × S, where F is the agreed base fee,
r is the agreed royalty rate, and S is the sales base expressly defined in
the signed agreement. A zero sales base does not eliminate the base fee.

The base-fee amount, currency, covered license period, royalty rate, definition
of covered sales, attribution rules, deductions, reporting schedule and payment
deadlines must be stated in that agreement. No numerical fee, royalty rate or
definition of sales is supplied by this public notice. Until a commercial
agreement is signed, no commercial license is granted. This notice does not
itself calculate, collect or charge a payment.

5. Rights-holder exemption

Dr. Ian Helfrich's own use of the rights he owns is unrestricted and incurs
neither the base license fee nor a sales royalty. This exemption does not
automatically grant a commercial license to another person or organization.

6. Data and outputs

Keep source attribution, record dates and material limitations with exported
research. The fee requirement governs licensed use of the Tool; it does not
make public facts proprietary or impose a fee for independently accessing
the originating public-data providers. Third-party data rights remain intact.

7. No warranties or automatic professional conclusions

To the extent permitted by applicable law, the Tool is supplied "as is" without
warranties of accuracy, completeness, availability, merchantability or fitness
for a particular purpose. Records can be incomplete or outdated. Assessments,
transfer amounts, source-name indicators, permit applications and planning
notices are distinct evidence and do not by themselves establish market value,
beneficial ownership, common control, project approval or completion.
Nothing in these terms excludes a right or liability that applicable law does
not permit to be excluded.

8. Further permission

For commercial use, redistribution, integration or another permission outside
section 2, contact Dr. Ian Helfrich and execute the applicable written agreement.

Copyright 2026 Dr. Ian Helfrich, to the extent of the original rights he owns.