What are the NEGATIVES?
Income Tax: Yes, you will eventually have income tax if you SELL the building, if there is a capital gain, and you might have substantial depreciation recapture, even after applying the strategies in point 3 above. That’s when you look to do an Internal Revenue Code Section 1031 transaction, buying a separate like-kind property to DEFER the gain.
Read more about that here: https://tax.thomsonreuters.com/en/glossary/1031-exchange
A further mitigator to income taxes upon sale and depreciation recapture is qualified opportunity zones, made permanent by OBBBA. Your capital gains are essentially deferred for a few years, and any new capital gains from a QOZ can be tax free, provided you keep the investment in the QOZ for the requisite period.
Read about that here: https://tax.thomsonreuters.com/news/irs-releases-faqs-explaining-qualified-opportunity-zone-final-regs/