You can get a corporate seal at Office Max or Office Depot.

And the value is in the corporate tenants and underlying leases. 

Two things to watch for are corporate debt defaults.

I'm a 34 year old financial analyst from a very large corporation so i'm incredibility comfortable with numbers, analysis, and 95% of general accounting (I still use a CPA for my own real estate properties, but that's mostly to have an expert who's up to date on all the laws go over my numbers).

As a sole proprietor it can be used on schedule C of your personal return.Don't worry about starting an LLCs, Corporation or partnership until AFTER you have over 6 properties. 

I would like to purchase the multifamily property through a corporation that I will form.

My goal is to become a Real Estate Investor and *free* from Corporate America. 

I'm likely going to be a Trustee and I'm wondering if there is any financial advantage to my Dad creating a corporate entity and transferring the house to the company, and then the company to the Trust. 

One of the standard setup is to have each property in its own single member LLC in the state of the property.The property LLCs are then owned by a holding LLC in WY or NV to benefit from their good charging order protection.In addition, you would use a C corp as management corporation to take salary (if needed to show steady income for future loan approval), retierement, medical and other fringe benefit.

To pull a permit on a structure that you do not plan on living in for the 12 months after completion, or if the structure is owned by a corporation, LLC, etc, (not sure if they research this) then they would require you to have a licensed GC to pull the permits.