09/04/2026
The biggest mistake first-time real estate investors make and it is one that shows up consistently regardless of experience level.
Not making enough room for error.
Here is what that looks like in practice. When you go into a flip Johnny Vang of EXP Realty recommends building in an additional 10 to 20 percent on top of your projected cost. Not because you plan to spend it but because renovations, timelines, and unexpected issues have a way of finding that money whether you planned for it or not.
For a multifamily purchase or your first single family rental the error happens differently. Buyers come in thinking they can get in with 10 percent down. The reality is you are typically looking at 15 to 20 percent for investment property financing. That gap alone can throw off an entire deal structure.
And here is the part that catches people off guard even after they have the right down payment: just because you are putting 20 percent down does not mean the rent will cover the mortgage. The numbers have to actually work. The rental income has to support the debt service, the carrying costs, and ideally leave some margin.
These are not details you figure out after you are under contract. They are the math you run before you make an offer.
Connect with Johnny Vang at EXP Realty.