However,  I will add for someone deriving their entire income from flipping it would probably be useful to calculate the taxes.

Bob, you can purchase real estate thru your sdira using cash or by financing, but if you finance, you will be subject to tax for the portion of profits derived from any financing.

First, what a state does or does not mandate as a maximum number to sell manufactured homes derives from legislation and secondary legislation that regulates and restrains the ability to sell manufactured homes.

What I am trying to understand is this one thing:Is my LLC ineligible to host a 401k plan because it derives most (all) of its income from rental income (passive)?

Typically, large national banks do not offer such loans for single family residential property.Tax Implications for IRA Borrowers:When an IRA uses debt-financing such as a mortgage to acquire property, the portion of the income derived from the borrowed capital is taxed as Unrelated Debt Financed Income (UDFI).As you research self directed IRA plans, be sure you understand the implications of the fact that you have two separate types of IRA money.  

They hold a first-lien real estate note, as opposed to some junk bond.Aaron,The formula to derive the value of a mobile home park is to take the # of occupied lots x the lot rent x 12 x .6 (if the park pays water and sewer) or .7 (if the tenants pay their own water and sewer) x 10 = the value of a mobile home park at a 10% cap rate.

Value of 4 unit buildings is solely derived from the neighborhood comps and then adjusted for quality and room count. 

With so many variations in properties ARV can only be derived on a property by property basis. 

I am just wondering if any assumptions can be derived from the presence of these cracks in the floor in regards to foundation issues.

NOI and if NOI derived with the 50% rule is attractive - - take it.Another view might be NOI divided by the number of doors - - is this worth your time and effort.