It's not city-wide here in Cincinnati.  

And before you do it, you better have some good reasons to go to that extent of hassle and expenses.

The combined costs for grading, surplus disposal, gravel base, asphalt, curb and gutter, manholes, sewer laterals, and sidewalks could easily be $200 per linear foot for a 20' wide street.

There are a lot of sketchy people living as roommates, so you want to cast a wide net, screen carefully, and be patient.

Location, property condition and amenities can cause a wide range of rental rates for similar layouts (2 bed 2 bath for example).

I managed to circumnavigate that to some extent by finding my own property, one that I believed in on it's own metrics and my own market research.

Here in Washington State there is a state wide fund that is used to deal with oil tank leaks; I believe that the fund is paid for by a tax on heating oil

@Corbin HiblerI'd first confirm the extent of the damage.

Tisch Center of Hospitality, has released a series of CapEx studies showing hotel capital expenditure spending has been half of pre-pandemic amounts in period 2020-2023.The impending debt crunch faced by commercial real estate over the next 18 months has also been widely reported. 

The zoning is RS3, so we'd have to wait til ADUs are allowed city-wide + dig down to meet the ceiling height requirement if we want to make it a third legal unit which is not something that financially makes sense right now.