You bring up some great points about this!
First, you claim that "existing homeowners" will have difficulty selling their home? Because the new rule will limit what they can build? If there's a home, what makes you assume someone will tear it down? Bit of a scare tactic no?
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I guess when you said "You bring up some great points about this!", that the the word "You" is rhetorical as I am not Larry Anchors, the email author.
I do think that parking is an issue - nobody in their right mind would disagree. But the county should not make a bad situation worse.
I would hope everyone would stay focused on the real problem at hand. And that is the county can force businesses AND homeowners to adhere to the new codes (if adopted) if the property is forced to rebuild. I can certainly understand preventing a business with marginal parking the ability to expand as the expansion would only worsen the situation.
But let's say a fire or hurricane forces the rebuilding of a structure. Then one loses the "grandfather" protection even if you build an identically sized building. In my opinion, the grandfather protection should permanently remain in place in a rebuild situation as well as in the sale of the property.
Actually it must remain in effect.
If a condo association has X existing parking spaces and the building is damaged during a hurricane which requires a rebuild, the new codes could easily require an additional Y parking spaces. That may or may not be possible depending on available land.
It would be difficult for the county to tell the condo owners that they cannot rebuild because they are short 4 spaces. Try explaining that to a mortgage company. And if the county grants an exception in one situation then they would be expected to grant exceptions to others.
Multiply this by many after a financially and emotionally stressful event such as a hurricane, and WE (property owners, mortgage companies, business owners and the county) have a real problem.
Hopefully, the county will realize this, avoid future unnecessary lawsuits and incorporate verbiage to address this very real situation.