How to execute a 1031 exchange build to suitHow to operate and self manage a co-living propertyDid you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

For the LLC, talk to an attorney and your tax person.

why would a tax bill wipe out your equity at 60% loan to value?

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Focus on finding a real estate tax strategist who specializes real estate taxation, cost segregations, tax planning and financial planning. 

We don't have the Midwest weather, high property tax, old homes, high insurance, high maintenance, or state income tax.

@Richard Benjamin Wilhite, @Bill B.makes some good points about loan terms and the strict identification rules for a 1031 exchange.I would add from a tax mitigation perspective that buying the largest property possible will give you the greatest amount of cost segregation possibility and at the lowest cost since it would be one study rather than several. 

Basically all rentals, even ones owned under LLC, come up during loan DD as long as you file them under one tax return as personal, that was what happened to me earlier.  

If you need financial help, ask under the "Finance, Tax, and Legal" forum.

Details on the duplex:Price: $385kBuilt: 2012Size: 2674 sq ft (1333 each side). 2 story, 3B/2.5B each side w/ 1 car garage & driveway for both, fenced backyard both sides.Interest: 5.49%PITI: $2,698Current Rent: $1,350 but could be brought up to ~$1,600, maybe $1,700Yearly Property Tax: $8,340 (I don't pay any on my side while I live there so $4,170)Upgrades: Vinyl floor in kitchen of both units, new AC (central HVAC) on vacant unit, roof done 2016.