Formally, you'd use a closing agent, such as an attorney or the closing dept of a Title company. 

It does not require formal education, training, or a degree.

If that does not work and they were the cause of you losing money you can always sue them another method is to file a formal grievance with the state Bar in your state and the state where they operate. 

If they do not pay for your damages sued them and follow up with their social worker to place a formal complain for damages to the property and send them a copy of the court documents.

Not sure why you'd be submitting offers through an attorney for something like this, unless we're talking about a bulk package or a really large deal that would start with an LOI and some more formal negotiations.Can you provide more info on the situation?

You might also need to check and find out if there is a Judicial process after the 3 years which makes it more like 4 years.  

I am assuming that is not in a judicial foreclosure state that has to be auctioned off and gives the homeowner time to sell it.

Is it Judicial or Non Judicial?

HOA Lien purchases is a game that can be quite lucrative assuming:1) property is in judicial state (states where lender must file lawsuit to acquire property title)2) purchaser is well versed in foreclosure law 3) purchaser researches hoa cc&r 4) think of arbitrage not capital gains when assessing risk

Was really looking for a less formal networking meetup of like-minded individuals.