Mandatory Storm Shelter New Construction

Kevin, Thank you for posting; this is a very interesting idea! I wasn't able to find any examples of mandatory residential storm shelters, but I did find that Moore did something similar after the 2013 F5 storm. In 2014, Moore adopted residential building codes requiring that new homes have hurricane clips, foundation bolts, more durable garage doors, etc. to withstand an EF2 tornado. A few years later, researchers at OU conducted a study on how this affected housing affordability and surprisingly found that, at that time, the more restrictive codes had not affected price per square foot, home sales, or new building permits despite increasing building costs. Notably, however, this study is about 7 years old now, and Noble is very different from Moore, so pursuing something like this would require further investigation. Do you know of any similar examples or research of mandatory storm shelter construction that we could look at? Thank you again for sharing; please continue posting your ideas! News article: https://www.kgou.org/weather-and-climate/2018-05-25/five-years-after-tornado-moores-stronger-building-codes-havent-hurt-market OU study: https://www.sciencedirect.com/science/article/abs/pii/S2212420917302819