Its  courageous step and seems like you secure yourself financially before  jump in as full time Investors.  

However, an enrolled agent mentioned that the "trust" will have to file a tax return as well as the LLC, but he wasn't sure.

You put it under contract to secure the deal. 

Hi Guys,Is there someone who could please provide me with a good picture of a window with security bars and quick release, please?

Your mom would need to file form 709 Gift tax return. 

Hi BP community,Has anyone in the Pittsburgh area, specifically serviced by People's Gas, Duq Light or PAWC purchased one of those utility line protection plans and actually had to file a claim?

If this amount is less than or equal to the maximum §121 capital gains exclusion amount for your filing status, then there is no capital gains tax on your sale profit due to appreciation. 

Part of the due diligence process is discovering what service and other contracts exist, and whether and how they may be enforceable against a new owner.The leases should be assigned, security deposits transferred, and any service agreements which the buyer does not want continued should be terminated (or dealt with somehow) as of settlement date.

Its MLO job to prepare the file before submit to U/W.

--So long as it is legal, an above-standard security deposit.