I think radon risks are exaggerated, but I would rather err on the side of caution.

I would get the estoppel like @Nathan G. has suggested above, err on the side of caution and get as much information as possible. 

The source of data is listed but that source has the higher square footage than listed.The contract has contact clause that has 3 days limit upon the receipt of the appraisal.Either the buyer accepts lower appraisal and terminates contract or brings more cash to closing to cover for the difference.I filed an appeal regarding the erroneous data and neither lender nor the appraisal company will give me an answer.Thanks

NYS courts tend to err on the side of tenants so make sure you are following the law explicitly and stay on top of the new regulations because they are continuously changing.Good luck!

@Ron HollingsworthAs Taylor mentioned, you could get erroneous data with that search.

I'm always one to err on the side of caution, but I've done loans for clients where what was being calculated was incorrect and that client had been turned down multiple times, until I dug into the numbers and then displayed that for underwriting. 

I also thought 20% between maintenance and CapEx was conservative but I guess I wanted to err on the sage side.

@Nik MoushonSome states have incredibly erroneous security deposit laws.

I've seen a combined estimate of 15-20% used for these two line items, and given that this property is 107 years old, you may want to err on the higher side. 

@Caleb VanTimmeren real estate is a long term game so I would err on the side of doing this slowly.