With the exception of unexpected costs, their estimates will be based on experience, expertise, and up to date knowledge on material costs.

@Marie J Miller,I agree with Jeff, since you are self-employed - Solo 401k would be much better options for several reasons:- You can maximize your contributions quicker since it has elective deferral component- Catch up contributions increase your overall limit- Ability to borrow from the plan using participant loan feature- Ability to make Roth contributions - Custodian is not required - can be set up as a trust and give you "checkbook control" and ability to invest in alternative assets such as real estate- If you invest in real estate using leverage, you will avoid UBIT (unlike the IRA)- Cost effective: avoid custodian and transaction-based feesHope this helps!

This was just unexpected and I was uneducated on this issue.  

If the unexpected big expenses arises, it could really hurt (I've budged 2% of purchase price for Maintenance, which totals $12,000/year for one property). 

Also be sure to add a contingency line for unexpected repairs!

I was thinking of doing this to make the commercial component more NNN lease with longer terms.

This LLC is located in the Quad Cities, Iowa, and my brother is the main boots on the ground component with the vast majority of RE experience compared to my sister and I.

They don't necessarily have plug in play systems but have most of the components needed to build a real estate business that you want (rehabs, wholesale, buy and hold, etc.) 

Did you pursue the bridge option because of the land component?

You should have some capital set aside for the purchase and then for repairs and unexpected issues that could arise.