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California is a big EV market. Sprinklers are required in new construction in CA. https://www.nahb.org/-/media/NAHB/advocacy/docs/top-priorities/codes/fire-sp

• greedo 5y ago
  Your link shows that 48 out of 50 states don't require sprinklers. I would guess that less than 5% of SFR in the US have sprinklers.
  • harambae 5y ago
    >Your link shows that 48 out of 50 states don't require sprinklers. Partial Mandate: NY, Mass Full Mandate: CA, Maryland Those are 2 big states in there. By population the four are ~73 million, or a fifth of America.
    • greedo 5y ago
      Massachusetts only requires them in townhomes and houses over 14K square feet. In other words mansions. NY only requires them in three story buildings, otherwise it's up to the buyer. So these are nonsense arguments. Considering how many existing houses are exempt from all of this, I would estimate that less than 10% of the homes in CA have them, and less than 2% in these other four states.