Looking for some advice on putting a security system in my Rehab.

I have never asked a tenant to make rent or a security deposit payable to me personally going back 16 years.A friend has had dozens of rentals since 1982.

Within the next few years I want to use private lenders, local banks, and money I save from commissions (currently a licensed agent) to buy B to C class apartment buildings.

Use private money BRRR.

I’m going through a conventional loan right now and they made the seller remove security bars so a foundation issue may make it not financAble.  

I still work in Cambridge as a Operations Manager for a security company.

I’m also searching for private and hard money lenders.Please let me know if anyone can help

My question is: with rates about 2% higher on investment loans, (heloc and 2nd) should i just use my own residence to secure a loan or should I keep them completely seperate?

I attended one of this company's auctions last weekend just to get a feel for how these private estate auctions go, and it kind of went like this: auctioneer asked for an opening amount, no one bid, one of the auctioneer helpers bid it lower, then some people started chiming in, and it went back and forth between a few people before finally ending about 25% higher than the number the auctioneer started at. 

If you don't want to go that route, you need to find a private money lender.