Would it be possible to take my $100,000 liquid cash and their equity and go to a lender and get some sort of funding for the rehab?

I have decent liquid assets but they would take a huge hit dropping 10-20 percent on a 2 million + loan.  

Thanks everyone.Annual T4 income: 250K380K in liquid investments.Principle property est. valued at 670K with 250k left owing and 155K heloc attached.Rental 1: purchased 2021 for 220K current est. value at 270K was a house hack with 5% down and $1600 monthly rental income.Rental 2: purchased 2022 for 280K 20% down current est. value 345K rental is $2000 monthly Rental 3: purchased 2023 for 267K with 20% current est value 310K rents for 2100 a month.

I have enough liquid money for the down payment for the hard money lender, but that'll leave me with zero cash for closing costs, realtor fees, etc.

My issue with that is I would have to liquidate before I would like to.

You should also request a personal financial statement to better understand their financial health and proof of funds to confirm they have the liquidity for down payments and closing costs.

I have no desire to be part of any lawsuit or liquidation event.

This is a great way to build experience and get some quality rental properties under you while keeping your liquidity up to go find additional properties.

I put roughly 20% down on a $200k home, and am curious what steps I could take to possibly turn my original investment into a large portfolio within the next 10 years, when we're currently "low on liquid funds" after finishing up a wedding.... 

Lenders typically look for experience, liquidity, and a solid track record when funding new construction projects.