Development units at Corvera are probably built on alluvial soil in the valley, not solid rock which provides generally better resistance to quake damage. Much will depend on the adequacy of the foundation concrete (quality?) rafts or foundation footings. One might might some wall/ceiling cracks of no great structural significance, but general effects on structures quite near each other can differ widely within short distances from epicentres.
Buildings in Lorca seen in photographs on the Internet display varying degrees of damage, the older structures seemingly suffering more than the modern ones on the ,as one would expect.
Not sure whether Murcia building regulations demand quake resistant new buildings. They shoud do, as the area is an active earthquake zone with known active faults..
I think Corvera is within about 25 miles or so from the epicentre near Lorca.
The onsite man who posted earlier will I am sure report back.