The agency will help Harriman to promote one of its new, luxury complexes - Bellagio - mainly through television, print and outdoor ads.
Freeway managing director, Desmond So, attributed the agency's win to its creative and strategic recommendations.
"Most Hong Kong property developers don't realise the importance of image-building. We see it differently because image-building is key for this category. With so many empty flats with similar facilities and prices, the property market has become extremely competitive, said So.
"We will, therefore, create a strong emotional appeal around Bellagio in order to make it stand out from the crowd.
"Our job isn't only to announce the launch, we aim to create the want and desire for the brand."