It's the concept of buying the debt attached to the mortgage rather than buying the house. 

If you want to play a passive role, a real estate syndication or debt fund could be a great way to go.

Look for CPAs who stay abreast of evolving tax codes related to real estate and possess a comprehensive understanding of deductions, credits, and depreciation strategies unique to the industry. 

We have no debt and good credit scores, do we have any options for making this work?

The owner does not want to extend the debt for 30 years.

. - I will ding their credit such that all credit cards and other debt will cost them more.- I will keep their security deposit for funds owed.- I will do my best to garnish future wages until their debt to me is paid in full.This has worked 100% time so far.  

Long term $ can range from 6's-10% range depending on all types of factors - LTV, location, unit count, debt coverage, borrower strength, full doc or lite doc programs, etc..

For instance, if there was a total of $250K of debt on those properties that woud leave you with $350K of proceeds to use to purchase $600K of real estate.  

Owning a duplex at 20 is a huge accomplishment, and it’s inspiring to see you’re already planning your next move.From my perspective, real estate investing is a long-term game focused on building equity, paying down debt, and maintaining stability over chasing short-term cash flow.

Trying to decide if we should use a home equity loan for the remodel, do we need to put current home under LLC to help with debt to income ratio & would that affect getting the home equity loan?