I’m a local gal and I never knew this place existed! Well maybe it’s because I wasn’t into sports? Anyway, this gym is located in what looks like a business strip. There were other establishments within the same outside mall like area. I came here to watch a friend’s daughter play basketball. It’s very easy to find. If you drive up from McDonald’s you will see it. However, they don’t have a sign that says CYO Serramonte. We stumbled upon it because there is a sign near the street(Forgot what it is called) and the address matched. The gym is tucked away near the back right hand side. We were worried we wouldn’t be able to find it until we saw the girls’ practicing. Gym is a bit dated. The bathrooms look like one in a house. There were no bleachers. We had to sit on folding chairs along courtside and hope to god a) the girls don’t run into us or b) the ball slams into us. The St. Emydius gym is way better in terms of the facility upkeep.