State and municipal health departments inspect restaurants (as well as other food-serving facilities—nursing homes, for instance), and some of them provide the results of those inspections as bulk data. In some places, this is done by a state agency, in others it's done by local government.
- List of all known food establishments (useful on its own)
- Results of the most recent inspection
- Grades or scores (not available in all places)
- Narrative reports
- By exporting LIVES-formatted data, Yelp could ingest and display this data
- Google may be amenable to incorporating this into their Google Place data, alongside reviews
- See Daniel E. Ho's “Fudging the Nudge: Information Disclosure and Restaurant Grading,”, which is about the poor efficacy of restaurant grading.