Questions on where to find property building laws

I am interested in buying a small plot of land near Forest Park. The plot is big enough to build a tiny home on it however I was just curious if that would even be allowed due to weird zoning lawns and all of that legislative stuff. I was wondering if anyone knew of any sources online I could go to to figure out building laws and zoning laws in the city or if there is a like law-specific person I can talk to for help. I'd really appreciate anything!