Your effective interest rate may be lowest if you refi but it will cost at least $3k to close and resets your mortgage at a higher rate than it is currently. 

You can also consider doing some of the things yourself through online tools to make it easier for yourself and save money!

The irs has not had a lot of manpower or tools to investigate SDIRAs in the past but that is changing as more people are using SDIRAs.

I get the tax code is a series of incentives or penalties depending on how one structures their financial house.Now if I own a business and invest in real estate, how can I effectively pay zero in taxes?

Calculators are your best tool.

Usually they will search for apartment brokers or commercial real estate brokers that specialize in apartments  so you're going to need to approach it from that angle.The most effective method to find off market deals is to call the owners directly.

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.The site has quite a few tools that can be helpful for new members.

Look for a Real Estate Analysis spreadsheet, there is a limited use one on BP under tools. 

Can I legally have the locks changed while the lease is still in effect anyway?

When I reviewed the actual TD, it said something to the effect of "this TD secures a  maximum of 501K in debt" since it was the TD securing a LOC.