Scottish Fire and Rescue Service crews battled the blaze which broke out at the site on Monday night.
An SFRS spokesperson said: “Our crews were confronted with an intense fire within six two-storey residential buildings that were still under construction.
“The fire was burning over an area measuring around 50m by 10m with difficult underfoot conditions meaning crews had to rely on their professionalism and skill throughout the operation.
“They deployed to strategic positions in order to surround the fire and used three main jets to tackle the flames.
“Three properties were destroyed by the fire and only the determined efforts of the crews prevented all six buildings being lost.”