Police are investigating whether a string of fires in Pimpama this morning, might have been deliberately lit.
Emergency crews were called to the corner of Dixon Drive and William Boulevard around 5am on Monday, after workers found fires at two partially-built houses.
The tradesmen managed to put those blazes out but when fire crews arrived at the scene, they found a further two fires at two other houses under construction nearby.
The blazes were all put out, with the buildings only sustaining minor structural damage.
Fire investigators are looking into the cause of the flames.
Anyone who may have seen anything suspicious in the area between 4am and 5am is being urged to come forward.