I’ve been playing around with computer vision models on my database to quantify this.I took ~8k rental listings and calculated their price premium for each condition rating against the exact average for their specific zip, bed, and bath count.The data shows a 19% spread purely based on condition:  cool stuff!

From there there's running calculations for income, expenses (categorized by type), then I have net income (after subtracting out the mortgage cost)Then I calculate ROI At the end of the year I look at the value of the house and calculate the equity.

Yes, use the BP calculators. 

Biggest mistakes I see are: calculating basis of the property and mistakes on the expenses with insurance, taxes, and mortgage interest.

There are a couple of ways to calculate the depreciation to carryover.

He sounds so intelligent on webinars, but can't even calculate losses properly, how could he calculate profit? 

If you know how to calculate an offer, then just call and make the offer.

Here's a bit more in detail about how rates are calculated for DSCR loans:1.

Although it feels good paying points to buy down the interest rate, did you calculate the payback period on that.

Airbnb ManagerMashvisor – Provides dual analysis for STR vs. long-term rentals, with heatmaps, ROI calculators, and a Market Finder tool—great for comparing strategies.