And as investors we should know this, but always anticipate higher costs and longer waits.EXAMPLE Breakdown of Costs:Plan Purchase: $1,500Permitting Fees: $2,500-7,500Site Preparation (grading, utilities, foundation): $20,000–$30,000ADUs require separate utility connections for water, electricity, and sewer but you can tap into existing utilities at the primary houseIn Raleigh you CANNOT split lots fee simple, so setting up completely separate utilities would not allow you to section off the ADU as of nowYour ADU must be on a permanent foundation (no wheels, no ability to move the structure)Construction (labor and materials): $100,000–$150,000Low-grade: $150–$180/sq ft averageMid-grade: $180–$220/sq ft averageHigh-end: $220–$250/sq ft averageLandscaping/Finishing Touches: $5,000Total Estimated Cost: $125,000–$200,000You could easily spend $200k+ with super end high finishes, custom designs, complicated sitework, adding a second story or more sqft, etc.

I ran every scenario of tackling this purchase myself.

In addition, since the rule changes, it seems like many agents are delaying the whole conversation until the very last minute when the buyer has little or no opportunity to object, research, or think about what they are agreeing to, without risking losing the home they just decided to offer on.

Real estate investing is just one subset of any type of investing, residential (what most sub2 is) is another subset of that, and "creative" purchasing is a tiny subset of that.

Did you expect it to be that lucrative when you made the purchase?

Now, getting around the Due on Sale might be as easy as doing a Contract for Deed or a Purchase Option instead of Sub-to.

Quote from @Joey Backs: Quote from @Erik Estrada: Are you planning to purchase in an investment property or primary residence?

The environment now with higher interest rates and higher purchase price does make it more difficult but definitely doable. 

This amounts to lost opportunity because if you had purchased RE, at the closing it can start producing return. 5) ADUs detract from the existing structure whether this is privacy, a garage, or just yard space. 6) this is related to number 1, but there are many more buyers looking to purchase homes for their family than there are RE investors looking to purchase small unit count properties.

Purchase price: $270,000 We bought our primary residence in 2012.