The reason why Free Company houses and personal houses are in the same areas■
The biggest reason is to ensure the effective utilization of land. FFXIV is entering a stable period and the amount of newly created Free Companies is gently declining, therefore the demand for new Free Company houses will also decline. Additionally, with expansions to the land sale feature, after the demand for land has been fulfilled there will gradually be land openings in the wards.
On the other hand, when it comes to personal housing, with the constant increase in the amount of gil everyone possesses, as time passes the demand for personal housing will increase and a large amount of open land will be necessary.
If we were to separate Free Company housing and personal housing into different areas, in the event that Free Company land opens up I believe we would then receive requests asking to make it possible to build personal houses on those plots. So in order to balance the two we made it possible to purchase land in the same housing areas and feel this will allow for land to be utilized efficiently.