Everybody keeps telling you the same thing. Retail is dead. Amazon killed it. The malls are dying, strip centers are next, so don't touch it.

Here's the number that ends that conversation: retail vacancy in the United States is sitting at 4.4%. That's not "recovering." That's tighter than office by a mile and almost as tight as industrial.

I've been in commercial real estate since 2013, and in that time I've worn three different hats. I've been a broker, I've been a property manager, and I've been an investor and developer.

Thirteen years is long enough to be wrong about almost everything at least once. I've had a $20,000 HVAC unit die two months after closing. I've pitched 50 lenders on a hotel and had 49 of them tell me no. I wrote a proforma on my first deal that was, and I mean this literally, fiction.

So if you're trying to figure out how to get into commercial real estate investing, this is the stuff I wish somebody had handed me in year one. Five lessons that actually moved the needle, and then the exact playbook I'd run if I woke up tomorrow with no money, no network, and no name.

Analyzing commercial deals isn't nearly as hard as you think. It's harder than residential, sure. You can't just run the numbers in your head on the back of a napkin. But the thing that's actually been making it hard for most investors isn't the deal itself. It's the tools.

Let me show you two deals. A Walgreens at an 8.1% cap rate, and a Chick-fil-A at a 4.45% cap rate. Both triple net. Both corporate tenants. Roughly the same lease.

The instinct is to look at that Walgreens and go, "Well, that's obviously the better deal. Bigger yield, big-name tenant, almost double the return." And that instinct is exactly how investors get burned.

The most expensive money in your real estate deal is not the bank. Bold statement? Maybe. But stick with me.

The bank charges you five, six, seven percent. Your equity investors? They're costing you twenty. And if that math surprises you, this is going to change how you finance every deal you do from here on out.

Four years ago, I bought a 29-building campus in Rossville, Georgia, about 10 minutes south of downtown Chattanooga. It's 32 acres and 1.5 million square feet of former wool mill, and I paid $5.6 million for it. Run the math on that and it comes out to roughly $4 a square foot.