Interestingly, the premium for the single-family rental is about half that of the 4-unit property.I’ve owned rental properties for over 34 years, so I have a solid understanding of how premiums and coverages typically align with property values.

Here are some questions that I would typically ask a CPA:Are you experienced in working with my industry?

Typically starting with a smaller rehab budget of $50K or less (maybe a max of $75K) and avoiding a 1 to 1(or higher) ratio of purchase to rehab costs is recommend when you are first starting out. 

@Allen Zhu if you are refinancing out of a DSCR loan, you don't typically refinance into short-term hard money loans.

Hard money lenders (HML) typically want to ensure you have the financial stability to handle the property and loan repayment, so proof of liquidity is a common requirement.

I only buy the Aquasource Henshaw White Watersense Elongated Height 2-Piece Toilet from Lowe's (item number 98923 model # T802).

What do contractors typically charge to come out to a potential property and walk through and fill out a SOW with pricing?    

Head over to bank rate or and take a look at the mortgage calculators, plug in the numbers and get an idea of what the property needs to generate to satisfy the intended debt.You still have to underwrite the deal for the non-finance expenses as well(typically 40-50% of the gross rents). 

Here is a list of why adding a single ADU in single family zoned areas in my CA market is typically a poor RE investment:1) The value added by the ADU addition is often significantly less than the cost of adding the ADU.

Just different colors etc....He initially listed his for $505,000.There are comps in the area that justify the 495-500K.