When you ask an important question PAUSE   Counting three dots will help   What were you hoping to sell for?

Unfortunately, there is not...unless you want to count gurus that charge you $10K/year to be a student, but they, themselves, don't really have the background necessary to advise (read some of the backgrounds of these jokers...really...you'll be stunned).

Counted all units and sizes in each town and looked up population. 

Dealing with your guests and contractors counts.

Stay fi includes a number of emails that could last a while with small unit count.

This will vary property by property and area by area, but in area not only do you have all the city/county level planning: access, traffic counts, density requirements, unit counts for school districts, sewer capacity, etc, but you also have neighborhood councils which will have additional level of say in final design, scale, unit counts, uses, etc.  

Determine the need within the community, bedroom count etc. 

I've known new investors who have lost more than $50K on coaching programs so count your blessings and learn from your mistake.

The differences in bed/bath counts actually do not matter that much, but typically sqft does.If you are off by even $100/mo per unit rent-wise, this could turn an 8% CoC return into a 3% CoC return instantly - in which case you'd have been better off just putting your money in the S&P500 and not a rental property.

And once you've got an approved applicant, then you present them with your lease, which needs to be comprehensive in its protection for you and of your property (mine is 24 pages and counting as I encounter new issues, and it contains fines for certain violations) - check your state laws.