Does the property buyer have a case against me?

This question was already asked and answered, probably not as is means as is.

What action can I take to stop payments and collect previous funds mismanaged by my Homeowners Association?

I would also recommend you run for the board as being a member will give you more clout.

Can a LL have suit filled against them by tenant after an unlawful detainer has been filed and a judgement made?

It would depend on the nature of the complaint. Did you raise the issue of habitability at the hearing?

I would just like to know if this written complaint is valid enough to send through the mail for mgnt.

I agree with Kevin and add " if we do not get results in a week , we will be forced to notify the authorities."

Ms. Sargent is absolutely correct in her analysis of how to handle the problem

Can a landlord deduct $250 from my deposit for a "janitorial cleaning" of my two bedroom apartment when I move out?

That a boy Kevin, listen to him and sue in Small Claims court. I hope you took photos.

Does the property buyer have a case against me?

It does not sound like it, but if the listing says the furnace was working you may have a problem

Can a LL have suit filled against them by tenant after an unlawful detainer has been filed and a judgement made?

You need to consult a landlord tenant firm that represents tenants.

You have to obtain a restraining order and the facts must demonstrate why your neighbor should be restrained, what actions are endangering you and...

I filed a eviction for nonpaying tenant, he answered back with a admissions to admit in which I did not respond in time

Consult an attorney as soon as possible or dismiss the lawsuit and refile. But the admissions might be used in the next lawsuit.