Mike,
If you or any of your colleagues are a member of the National Alliance of Preservation Commissions, I recommend doing a search of the NAPC-L Listserv archive or putting out another call for information from the group. There were a couple conversations last fall about the installation of retractable storefronts due to COVID; it might be interesting to see how those cases worked out. In the end, I think it will come down to the design of the storefront. "Operable windows" can mean a lot of different things for storefronts. I've seen some interesting ones that might work with historic commercial buildings, but it all depends on the significance/character of the property.
Good luck with your search!
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Barbara Howard Assoc. AIA
Minneapolis MN
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Original Message:
Sent: 05-26-2021 07:06 PM
From: Michael Davenport
Subject: Storefront windows
I review Certificate of Appropriateness (COA) applications for a National Register district. A restaurant owner submitted an application to replace the large glass panes in the storefront with operable windows. The existing glass is not original and likely was installed in the last 30 years, well after the end of the Period of Significance.
Is anyone aware of a historic building, or contributing building in a historic district, where this has been done, proposed, or approved by a local historic preservation board?
Mike Davenport, AIA
Community Development
Denver, Colorado
303-241-3362
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