Research

License and attribution

The Marta Walsh Index, the research papers behind it, and the weekly data file are free to use, including commercially, with attribution.

What the licence covers

The following are published under the Creative Commons Attribution 4.0 International licence:

• The weekly index values, the reconstructed historical series, and the weekly CSV.
• The published methodology, including the construction notes and the negative results.
• The research papers and their charts and tables.

You may copy, redistribute, adapt and build on any of it, for any purpose, provided you give credit. No permission request is needed and there is no fee.

How to attribute

For general use, in an article, a report or a presentation:

For a specific weekly reading, name the issue date, because the index revises as late data arrives:

Where the format allows a link, please link to martawalsh.com/mwi.

What the licence does not cover

• MLS content. The research is derived from Arizona Regional Multiple Listing Service data. This licence covers our derived, aggregated outputs. It grants no rights in ARMLS listing content, and nothing here permits the redistribution of individual listing records.
• Photography and identity. Photographs, the Marta Walsh name, and the site's design are not included.

Source and method

Figures are derived from ARMLS data. Published outputs are aggregate statistics from which no individual listing can be reconstructed. The construction rules are published in full at the methodology page, and changes to them are recorded there by dated amendment.

Information deemed reliable but not guaranteed. Nothing on this page is legal advice, and the index is not an appraisal or a valuation of any individual property. Questions about reuse: 480 274 5710.