About us

Your specialist in sustainable residential real estate in city centres

Sonian is a property developer specialising in Belgium’s most popular urban areas. Our team consists of complementary talents (architects, craftsmen and project managers) who will oversee your construction site on a daily basis. With extensive expertise in heavy renovation and new construction, we guarantee you a neat result, with respect for the environment and no surprises.

5 reasons to choose for Sonian

Comfort and serenity

Convinced that the future of society will depend on the harmonious development of cities, we create integrated and timeless living spaces in which you will feel good today and tomorrow.


With recognised investment expertise, we select the best location to establish your life project.

Responsible approach

With an A energy performance rating and a mobiscore (accessibility index) close to 10/10, we create homes that are sustainable and reduce your ecological footprint.

Tailor-made specifications

Choice of parquet flooring, kitchen, sanitary facilities, etc. You have a great deal of freedom in customising the plans of your home. If you wish, we will be happy to advise you.

Quality support

We make it a point of honour to offer complete service and professional support before, during and after the construction. This includes transparent and regular communication at every stage of your project.

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