Each of the fantastic lands in Pokemon has an unique culture or community.
If you can identify such a characteristic pertaining to Sunny Side Estates and persuade voters that it is real, go for it.
Some real-estate developments might be influenced by historic roots or cultural or environmental concerns and manifest something noteworthy.
A slab of concrete with square letters that identify a developer’s brand, the same as dozens of others in the vicinity, is a bit hard to choke down. It has been imposed on the area along with the Home-Owners Association agreement and Zoning Law bypasses.
If there is any public stuff inside that gate, why not simply nominate that? If there’s a lot of it, THAT becomes the charm or character that you can use to sell the special nature of your community sign.