get quotes, run the numbers.on the addition - it's almost definitely not worth it, i suspect the time to pay the costs back for the increase in rent might be decades or longer. 

I think it depends on 1) what kind of profit/loss you’d make if you sold it and 2) whether fixing repairs and replace the siding would increase the next tenant’s rentI hope that helps some!

Where population growth is stagnant or falling, the current housing supply is sufficient so there is little increase in prices.

Increasing your construction budget by a small amount can have an enormous impact on your overall construction budget, productivity and site safety/insurance premiums.

what I would do to decide if brrr method is the way to go-Assess the cost of necessary updates and improvements and compare them to the potential increase in your home's value.

It’s showing as increasing the loan amount although monthly interest payment stays the same? 

Albeit, when we building materials started to increase significantly, that complicated things and we had to just keep going.You will lose MORE if you sell a half-built property, than if you take it to completion. 

I think what we’re assuming is that these circumstances increase the odds of sellers being motivated.

The increase in property taxes, insurance, and maintenance/wear and tear may erase all of your gains and more. 

Unique features like land and outdoor amenities can add value, and utilities can increase rent.