Construction codes are still pay walled.
NEC (electric) is $170: https://www.nfpa.org/product/nfpa-70-national-electrical-cod...
IPC (plumbing) is $130: https://webstore.ansi.org/standards/icc/iccipc2024
And there are many others.
(I will say the YC company https://up.codes/ makes these much more accessible, and deals with local variants to these regulations)
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A justification for this would be: states choose these providers to accurately present building codes (keeping up with the right versions/revisions is a lot of work, etc) because there's risk in simply publishing the PDFs and leaving it to basically anyone to curate. But the providers (like ICC) also tend to lock these deals in with state laws (not sure if they lobby for it, but I would imagine they do). When you think about who needs to have access to the correct and current building code or electric code or whatever for regular reference, it's really your lawyer, plumber, electrician, architect, builder, etc. and in that context $170 or $130 isn't a bad deal.
> You have to build your projects to these specifications, or you will be held accountable! What specifications? Oh, you will have to pay to access them.
This is essentially a protection racket. Ludicrous.