Will my Homeowners Association or city allow synthetic grass?

I am not sure if it is okay if we install synthetic grass in our area

Well, different HOA have their own rules and regulations, i am afraid that I won’t be able to answer your question without knowing where you live. Please fill out this online form so I can see if I can provide further help:
https://megagrass.com/pages/free-estimates
In the mean time, you can also try to reach out to your HOA and get their rules and regulations or directly ask them about having artificial grass installed in your property.

Oops. Been planning to install artificial grass on our lawn and I forgot to ask our HOA first if it is fine.

Yeah, some don't allow and some don't care. Good thing our community allows having artificial grass.