Hand of Evil said:I think you would see an impact to religon, where the more rural druid magic-users would hold power.
Roads could be built faster with spells, earth to mud, add concrete, then harden. Same with buildings.
Trade would increase, you would create more exportable goods, which could cause two things to happen, one you become the target of raids or you have a very diplomatic weapon.
Religion: Most definitely, especially when a person can receive a reply to his prayer, plea, or supplication
Roads: The Romans didn't use concrete in road building. Compacted earth, gravel, and paving stones went into roadwork. High quality too. I would expect the Romans to use magic to strengthen roadways, and make the work last longer. Flying carpets from Persia would take a load off the roads to some extent, as would Gates and Teleportation. But not to the same extent insofar as the "Portal" magics available at the time of the (Dragon Earth) Roman Empire were not as advanced as they would become starting in the 16th century A.D.
Trade: Or both. More to steal, and more to send as gifts to the neighbors. (Said gifts sometimes leading to more raids.

I can see personal wealth and the standard of living improving with a higher level of manufacture and trade. At the same time, it would call for a higher level of personal security as people take measures to protect their possessions.
All in all, good thoughts. I thank you for the feedback.