Talk to a licensed electrician or the inspection department on what you need to do to ensure compliance. 

Bottom line - you've incurred costs as a result of entering into the transaction and you fully intend to perform in compliance with the contract - but no tantrum of any size will make you pay this listing agent one dime; her commission is between herself and the owner.  

We've been assured that there is a need in our area but only one tenant so far. 

If the pet / service animal becomes an issue, you have leverage and can request compliance (damages, barking, not picking up after the pet, etc).

All you have to do is stay in compliance yet we see so many posts that ask hypothetical what if questions and / or whether someone knows how well certain things are enforced in certain areas.

I would be okay with compliance testing if they put the same amount of effort towards catching fraudulent applicants. 

1) created marketing to assure property had as much visibility as possible 2) developed on market timeline that created urgency without missed opportunities 3) negotiated best offers to make sure no money left on tableWhat was the outcome?

But the reality is, A lender is agreeing to hand over hundreds of thousands of dollars. and all they ask is 10-20% down payment to assure that you are worthy of their generous offer. if you are unable to cover that much cash, you're in luck!

If you delead (and maintain the standard) you will be in the clear.Here's the law (emphasis added by me):460.100: Duty of Owner(s) of Residential Premises (B) Whenever any residential premises containing dangerous levels of lead in paint, plaster or other accessible structural material undergoes a change of ownership and as a result a child younger than six years old will become or will continue to be a resident therein, the new owner shall have 90 days after becoming the owner to obtain a Letter of Full Compliance or a Letter of Interim Control, except that if a child younger than six years old who is lead poisoned resides therein, the owner shall not be eligible for interim control, unless the Director grants a waiver pursuant to 105 CMR 460.100(A)(3).

Neither is assured to be correct.Please clarify how the two properties have been used and where you actually lived the last few years.