All of your profit stayed inside the SDIRA and remained tax deferred there. 

Self managed HOAs are usually undercapitalized so you want to take a thorough review of the condition of the community to make sure there isn’t deferred maintenance because you might get hit with a special assessment if the board isn’t setting aside cash for those capital improvements.At face value, taking into consideration my typical financial objectives, I wouldn’t do this deal unless it was a much lower price.

It is deferred until sold, via invisible basis reduction. 

@Eric SmithGenerally, if the taxpayer sells the relinquished property to an unrelated party, the taxpayer generally cannot acquire replacement property from a related party unless:The related party is also participating in a 1031 exchange.The related party pays more in tax on the sale to the taxpayer than the taxpayer is deferring in the exchange (this scenario is rare).Let’s look who is considered a related party: Spouse, children, grandchildren, parents, and siblings.Corporations and shareholders owning more than 50%.Commonly controlled corporations.Partnerships and partners with more than 50% interest.Trustees, grantors, and trust beneficiaries.Non-Related Parties:In-laws.Aunts, uncles, nephews, nieces.Friends.Domestic partners.Entities owned 50% or less by the taxpayer or a related party.In your case, your mother-in-law, aunts, and cousins are not considered related parties to you under the definitions in Sections 267(b) and 1031(f).

Up until that point the property was solely in my name.If I decide to occupy the property after 2 years, and decide to sell the property after 5, do I owe the full deferred tax amount, or are the taxes "prorated" based on the ratio of time the property was investment/primary?

If you're looking for a Cleveland duplex in a C Class neighborhood with $120ks as your purchase price, you are looking at properties with deferred maintenance.

Instead, it reduces the seller's net sale proceeds, which may impact the amount required to be reinvested to fully defer capital gains taxes.For the buyer, the credit lowers the property’s basis rather than being deductible as a repair expense.

However, deferred maintenance is a key concern you need to keep front and center.

I will want to continue to continue to defer the taxes but in an UPREIT.

If you order the appraisal before the work is done, they will hit you with a deferred maintenance which means they can not offer a value because work is not done and now they will have to go back out there for a 1004D and it will cost you more money.In the BRRRR acronym, Rent does come before Refinance.