Or if you want a lower monthly payment, then do the 20% down.You can also negotiate credits with the sellers to use towards your closing costs or rate buy down.

You should only be liable for tax on any appreciation since you inherited the rental (minus the cost of your improvements). 

Rehab cost overrun is where most BRRRR investors and flippers go wrong.

When you took in the increased cost of the build how did you arrive at that percentage?

Make sure your rehab is "renter" cost rehab. etc. 

That may increase your cost or limit the coverage you can get.The Year that the following were updated (either partially or fully) would be good to know:- Heating systems- Roof- Plumbing- electricalSome companies will not write properties with systems that have not been updated.As long as you are living there, the proper policy for a 1-4 family is a "Homeowners" policy.

@James Boreno You’ll likely owe taxes, but don’t forget to account for your adjusted cost basis, which factors in the original purchase price, depreciation over 10 years, and any capital improvements.

Maybe that is gross profit when you sell it, but what about the cost to build it?  

Even 600k loan at 10% interest costs $165 a day.

  ( Maryland )  Small parking lot 12 cars plow and salt $450 . 2 in trigger Costs are regional for sure