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.

I rehabbed a home and was caught without building permit I went through the process of getting a permit but my original plan needed a variance after the process and being denied the variance at the board meeting I decided to change the plans to build the structure in the same footprint and received two building permits.

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. 

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.

Where these numbers are found, there is a very high rate of rent actually being paid.We have over a dozen Fortune 500 companies just in Metro Detroit with huge Healthcare, Auto, and mortgage industry National footprints.

As such existing properties are often grandfathered in with their existing footprint, even if current zoning would require a smaller one due to lot size.

Tech companies are continuously moving here and establishing a footprint in Columbus as well.

Gordon,You need to find out if there are any Environmental issues (either actual or potential). 

The pull back in these markets is due to a confluence of many factors, but it started with these environmental factors:Low interest rates and easy financing for new projects.Structurally high rent growth on existing inventory.High wage growth and high job growth.Very low vacancy.These factors led to floods of institutional capital coming to these markets to snap up existing multifamily inventory and build new supply to meet demand.For these markets, the last 5 years have been a seemingly never ending party!