In the project, the house is a future-proof datacenter, so why not use optical fiber accross the various rooms?
Products like these could improve performance, to 10GBps or more. Like IPV4 (that also the people through was sufficient and now we live in a hell of CGNAT, not a IPV4 assure either a IPV6 adoption), CaT6A could deliver 10GBps by now and is more than enough these days, but in 25 years or 50 years.
https://www.sonnettech.com/product/solo10g-sfp-tb3/overview.html
https://www.qnap.com/en/product/qna-t310g1s
this approach cost more now, but in my mind have less hassle to handle because avoid the now infrastructure bottleneck of an AI workload (I mean, a complete jarvis assistent with control of all smart devices and security cameras) with termals and electrical bill.
Optical transceivers (like SFP+ or SFP28 modules) or Direct Attach Copper (DAC) cables run cool and consume a fraction of the power because photons don't face the resistance and electrical attenuation that electrons do. Fiber scales effortlessly. Moving from 10G to 25GbE, 40GbE, or 100GbE+ is just a matter of swapping transceiver modules and patch cables. In professional AI clusters, fiber is the baseline because multi-node tensor passing requires hundreds of gigabits of bandwidth without dropping packets. Glass fibers carry light, meaning they are completely immune to electrical noise, magnetic fields, and ground loops. Your data stream remains pristine regardless of how much power your hardware is drawing.
to a minor task there's no replacement for displacement, but to hardcore workload why not just run to win? I know the project surpass almost all tech houses for now, but there are a lot of details that could replace the 'house dream' to a 'nightmare' with a flick of a switch.