@Efi Well for one thing, each floor on buildings would be taller! And doors quite possibly wider. With much higher doorknobs.

Revolving doors? Right out.

I doubt public transport would be needed: centaurs are quite mobile on their own! Not sure how inter-city transport would best operate.

Vehicles are interesting to contemplate. They wouldn't have seats, probably; just room to stand, wheel and shifting mechanism high enough for comfort, and probably a pedaling system much like human cars.

Not gonna touch those other issues though ∑;p