Suggesting to them buying their house for a wholesale range offer or lower dependent on the extent of the rehab, then having a contract in place that gives them a percentage of the profit to help get them back on their feet, paying off debts etc.

It will be highly dependent on the district and licensing.

It does depend on the lender.

If it is someone you know you can give them a straight return as if its a loan - can provide a lower interest rate to provide upside - it really depends on the lender and what are they concerned with and what is their risk profile. 

Cash flow is crucial, especially if you depend on it for your monthly income.Selling the property for $170k, which is above its market value of $120k, might seem like a good deal initially.

If you building 2 , again depending on your lot size and projected finishes. 

That is often a matter of opinion and will depend on the attitude of your municipality.Most municipalities do not require neighborhood approval, but will offer the public opportunities to provide input which will be considered.

Capital partner provides the capital 100% of it no downpayment and no monthly payments and pays insurance.. this allows you to scale much much faster.. cost of the capital will be a little bit more in most cases but not all cases depends on the HML and if your paying broker fee's on top of the lender fee and of course junk fee's 

For mobile homes, it often depends on whether the property is considered real estate (attached to land) or personal property (if it’s not).

It depends on your financial strength, the quality of the property, how many properties you own, etc.I like to start with one significant expense and three months of vacancy.