When you start to get into larger properties, it can begin to make sense. 

Good for you starting at 19.

I am ready and will be starting with property number one sometime, hopefully, quarter one of 2025 with a possibly 2 bedroom and 1 bathroom single family home; as this is within my current budget.

STOP waiting, start DOING!. 

You could also look into regional banks or credit unions with experience in real estate development for middle-ground options.If I were you, I’d spend some time shopping around for the best rate/terms.

Start by going to www.narpm.org to search their directory of managers.

If you are not attached to the duplex, could be a good time to sell to developers who want to convert to individual condo units.

Here’s what I have so far:Downtown San Antonio (78205)King William Historic District (78204)Pearl District (78215)Alamo Heights (78209)Southtown (78210)Leon Valley (78238)Stone Oak (78258)Tobin Hill (78212)La Villita (78205)Helotes (78023)Heritage / Far West Side (78245)I just wanted a broad list to start with areas that could fit the bill.

Cosmo - I personally don't know Phoenix well, but if I had to do this in another city I would look at income levels, crime levels, and population growth (if you can) by zip code and/or area within a DMA as a starting point.

An LLC isn't necessary when starting, in the long term, it may be worth exploring.