Condo properties are exempted from rent control and usually add 20-30% of value to your property which is why people like to condo convert.

Owner-developers are exempt from licensure in some cases--I'm wondering if that applies to flipping.

You need to live in the property for 2 of the last 5 years of ownership to qualify for the tax exemption of $250k for single filer.

You just get the exemption.

Tax Exempt 501 ( C) 3 Organizations would give anything to partner with Ray, in the development of some kind of special needs housing with government Grant Funds.  

when I bought the house taxes were 9000/7500 or so with star exemption.  

Exclusive Right-to-Sell Listing: A contractual agreement under which the listing broker acts as the agent or as the legally recognized non-agency representative of the seller(s), and the seller(s) agrees to pay a commission to the listing broker, regardless of whether the property is sold through the efforts of the listing broker, the seller(s), or anyone else; and a contractual agreement under which the listing broker acts as the agent or as the legally recognized non-agency representative of the seller(s), and the seller(s) agrees to pay a commission to the listing broker regardless of whether the property is sold through the efforts of the listing broker, the seller(s), or anyone else, except that the seller(s) may name one or more individuals or entities as exemptions in the listing agreement and if the property is sold to any exempted individual or entity, the seller(s) is not obligated to pay a commission to the listing broker.

Being a non spouse, which would include you plus a parent scenario or just a regular person scenario, it would prevent you using the capital gains exemption later when you sell.

The Unrelated Business Income Tax  (UBIT) is assessed when a tax-exempt entity, such as an IRA or a solo 401k plan, engages in a business activity that is not related to its general purpose.

@Jorge,The Rollover as Business Startup would likely be more than you are looking for, as it involves a C-Corporation and Profit Sharing plan combination.Making a new contribution to the Roth portion of a 401k each year comes from income you earn in the business that is sponsoring the Solo 401k - which is your after-tax real estate flipping activity.As you build the 401k plan, it can invest in many ways associated with real estate.Flipping houses does not disqualify a retirement plan, it is just a type of activity that comes with a tax burden since the tax-exempt entity is competing with taxpaying businesses.