Given that it's almost a 50% increase from the existing rent price, you might want to set a timeline of 2 or 3 months before it taking effect so they can find alternative housing if they plan on vacating instead of staying at that price point.Another option could be to ask for the rent increase, but offer something in return.

Any advice or alternative routes I can do to move forward without having to start from 0 somewhere else is extremely appreciated. 

The alternative is to just pay your mom's rent and let another owner deal with your siblings. 

Alternatively, if its for the hopes of accessing future real estate loans via the LLC then it may be a moot point as a lot of these bigger banks won't lend on an LLC that's brand new and no history of cash inflows/outflows. 

My other alternative would be to save several years for a down payment.

These lenders often consider the income-generating potential of the property rather than just personal credit history.Non-conventional Financing: Look for lenders who specialize in non-conventional or alternative financing options.

While chatting with their team is fascinating, there is an absence of online information available about the company, the team member told me neither him nor the director have LinkedIn accounts and no alternative was provided to review their achievements or qualifications. 

Any other alternatives?

Hey community,It’s taken longer than expected but I’ve been moving forward with a potential off market deal with a 4 unit (garage could be rented as alternative space). 

@Vincent DonatoWhy bother when there are cheaper and portable alternatives like table fans?