See, now I'm just not sure what the question is.
You will likely have cable boxes and outlets in your home to connect to. Unless the community is not using traditional cable boxes, which run off of COAX, which would suprise me.
Fiber to the home is up and coming for sure, but then it typically breaks out to cable at the home which usually has the bandwidth for specific signals that are necessary after being broken out - similar to Verizon's FIOS service.
The video to the projector would then typically be run from the cable box, through an A/V receiver, and up to your projector using traditional coaxial 75ohm cabling, not CAT-5 and would be wired accordingly. For the best image, typically you will go with HDMI these days. Theater plans, from the ground up, are recommended to include conduit so you can add wiring later. For HDMI over CAT-5 you will need two pieces of CAT-5 from the projector to the area where the receiver lives, and CAT-5 to HDMI converters.
I'm not sure how 'planned' things are, or how much say you have in any of it. I know in our area, almost every community is carefully planned with homeowners associations, etc. But, when it came to my individual house, I got full say in everything that went into it, and I ran wiring out the wazoo.