Renting out Nonconforming Duplex Denver

[Eric Buras]

New to posting, but have read forums and podcast for a while. Three of us (engaged couple + sister) are looking to buy a duplex in Denver proper that is zoned U-SUB aka urban single unit as opposed to U-TUB (urban two unit). This duplex has two addresses and is listed in the property description (denver.gov) as a duplex. We believe it is grandfathered in as legally nonconforming. It has been owned by one woman but rented out separately for a while (need more info on prior leases as 12 months of vacancy can terminate legal nonconforming use). We plan to live in both units for a while, but part of the value prop for us is renting out one or both sides down the road. Does anyone have experience with renting out a nonconforming duplex in Denver (or anywhere else similar)? From a lot of research it seems that there are tons of nonconforming multifamily on single family zoned lots. And presumably tons of these are rented out legally. So we think we are safe, but are also consulting experienced agents, lawyers, and the city zoning office.

Thanks!