I could always spot competition looking at my homes.

You have mass competition priced way lower than you.

Not ideal, but its how services can keep prices down and adapt in a high competition market.

Families with middle+ means who don't decide to leave the area are necessarily your competition for great properties in this and the surrounding areas.

Sib Bahjat The question is, do you want the cheapest bid, or the best work for the most competitive price?

So impossible to answer your question, but if your question was what is the highest you could go based on ARV for acquisition, and your resale market had little competition and lots of hungry buyers, you can make small amounts of money going as high as 80% assuming your ARV was over $100k and under $600k (this is based on my market in So Cal) though I would not recommend paying that much to anyone starting out.

Which is another reason we say that money is made "when you buy," not when you rehab or sell.That said, to maximize your appraisal, ensure that the property is in at least as good of condition as the competition, no major defects, passes basic inspection, etc.

Apartments are a competitive product to acquire, and I want my offer to be as competitive as possible.

I agree with @Bill S you need to look at the specific areas.I will usually looked at the data of just a few blocks (see what type of rental competition there is) then move out further from there.

The others are not cost competitive from what I've seen if you are <100 units.