What are the advantages of doing a BRRRR on an existing property vs. buying the land and building a new house from the ground up? 

They also mow the lawns, shovel the snow, pay most if not all utilities, and provide most of their own appliances. 

Don't hire family / friends.Hire a professional who is boots on the ground 24/7Insurance rates going up should be a good thing since its baked in for those selling the homes, especially if they are selling an investment property.You can tell them, I can't pay at this price because these are my income and expenses and I can't cash-flow given the numbers.Over-time, sellers will adjust.

Pic 1 is the interest rate paying 10 percent down and the lender giving us 6 percent in closing cost coverage.

Pay the $800 and get the drainfield inspected and then apply.If they haven't told you to upgrade the tank, then don't upgrade the tank.

You would need to pay cash to do that or work with a local bank who will allow you to do that.

My tenant reported that a cat defecating on the ground make it filth and unclean.

For properties in that range, my monthly payment will be more than 40 percent of my monthly income but I should still be able to pay for that by renting the other rooms.

My current plan is to get a construction loan for 125-150k, and once it's constructed do a cash out refinance to pay for it.

In addition, I live with my parents so even househacking will still cost me over $400 a month, which is what I pay to stay with my parents.