These elements may affect how desirable the location is.Local Laws and Regulations: Learn about the laws and rules pertaining to tenants in your area.

Building off of what @Daniel Duku the main thing you would want to check for which you can via atlas is if the land was used previously for an auto shop, laundry mat, or something where you would need to get an environmental report.

Quote from @Evan Polaski: @Jack Wang, I can also say I often find people make these out to be bigger issues in their minds than in reality.I wouldn't dismiss Jack's list so easily, especially the environmental issues such as lead paint & asbestos. 

It emphasizes the importance of accounting for every element of a project, including contingencies, financing costs, profit margin, variances, and unforeseen expenses.

You already have some tools in your toolbox....no pun intended.Now, you simply have to work on the other elements to progress your REI pursuit.Ok, now that you have taken your initial step, below are some quick links to get engaged. http://www.biggerpockets.com/startherehttp://www.biggerpockets.com/meethttps://www.biggerpockets.com/alertsHow to Use @Mentions on BiggerPocketshttps://www.biggerpockets.com/ruleshttps://www.biggerpockets.com/termshttps://www.biggerpockets.com/inviteshttps://www.biggerpockets.com/perkshttps://www.biggerpockets.com/forums/categoriesREI books suggested by BPershttp://www.biggerpockets.com/renewsblog/2013/04/14/best-real-estate-books/?

One element you must incorporate into your search is income predictability. 

This is a common element I see with beginning investors. 

With a savvy realtor and attorney, you can put forth a competitive offer that still protects you by waving the contingency with limited exceptions to mechanical, structural, environmental, and health and safety issues.

For property managers and landlords in Orlando and its surrounding areas, the message is clear: a focus on landscaping can yield significant returns, both in terms of property value and in attracting and retaining high-quality tenants.For rental complexes in Orlando, adopting sustainable landscaping practices can significantly reduce maintenance costs while attracting environmentally conscious tenants.

So even elements that don’t appear damaged can be contaminated.