@Dr. Jordan E Smith Knowing your numbers is a good basis as a starting point, but don't let numbers be the only thing that informs your decisions. In your comment you state "obviously more is better", but I'm here to warn you that when it comes to real estate this is not entirely true. At least, there's more to it than that. Cap rate and NOI and COC are important, but don't assume the better the numbers the better the deal for you personally. One thing someone wiser than me once told me when I was first getting into analyzing deals is that cap rates aren't linear as in the higher the better. It was counter-intuitive for me at first to realize how caps max out and stop being good at some point, but it totally makes sense. A 15 cap in a market where 6 is average should be a giant red flag. The building probably has structural issues or is inhabited by rival gangs or both to be priced that low. That building looks great on paper, but you'll be getting into a specialized market that requires expertise you might not have such as evicting gang members or fixing major structural issues. In my market for me the sweet spot is 6-10%. You have to learn both your own market and your own sweet spot. My advice would be rather than getting too focused on cash per door, think about what kind of business you want to run. For example I have an apartment complex in a transitioning neighborhood, C- property, great cash flow on paper. Up until doing that deal I thought the bigger the building, the more cash in my pocket each month, the better. However since doing that deal I have learned that I actually prefer owning smaller buildings closer to downtown that are A's and B's. They have less cash flow on paper but I like them better overall for other reasons. I like doing business in those neighborhoods better. I like driving to those buildings more so I go more often. I like improving those buildings more so I make more improvements. I'm seeing better appreciation. I have less vacancies and less evictions. I'm using my managers less so I'm paying less management fees. On top of all that they're less stressful to own and take up less of my precious time. Since you're a doctor, you might prefer dealing with A and B class properties even though the numbers aren't as good on paper simply because they might be something you'll stay interested in and have more pride of ownership in. I think that's a big factor that shouldn't be overlooked. It sounds like you plan to self manage in the beginning so this is definitely something to consider for you personally. Real estate is like any job in that the more you put into it the more you get out of it. Your profit, like any business, will depend on how well you run the business. Since you're making doctor money and working doctor hours, real estate may be a big opportunity cost for you to put effort into to begin with anyway, and you may be even less likely to divert time away from your high paying career for properties you don't like. You should only start a second job in real estate if you have passion for it, and maybe in your case that means buying more expensive properties that you actually like. In addition to calculating how much money you want to make, think about what kind of business you want to run.