Vincent Sontani began his career as an architect in 2014 and married interior designer Christle Ratnawati in 2016. In 2017, the couple founded Sontani+Partners, a Jakarta- based design consultancy born from the shared passion of an architect and an interior designer. They believe in achieving a perfect balance between aesthetics and functionality in their designs. Whilst many seek to improve their lifestyle in different ways, Sontani+Partners believes it all begins with an elegant and efficient space. As Leonardo da Vinci once said,“Simplicity is the ultimate sophistication.” Vincent strives to create beautiful spaces that meet his clients’ needs, finding satisfaction in meticulously refining every design detail.
A cul-de-sac house presents unique design challenges. What were the owners’ initial requests?
The homeowners had lived in the United States for many years and initially requested a McMansion-style house, a semi-classical design popular in America. I listened to their vision, but as we discussed further, they also expressed a preference for a straightforward, clean-lined residence. Since they live as a family without household assistants, they wanted a home that was easy to maintain.
As I got to know them better, I realised that a McMansion, with its many elaborate elements, would be too complex for their lifestyle. Whilst the American classic style is aesthetically appealing, it isn’t always practical. Additionally, the plot of land was too small for a McMansion-style home. I asked if they were open to alternative ideas, and they agreed.
When I visited the site, an existing structure still stood there. It was a tusuk sate house, directly facing west. I carefully studied the site conditions and proposed a design that adapted to its constraints. And, I was given full creative freedom to develop the concept.
What inspired you to design this tropical minimalist house?
The inspiration came from the site’s limitations. The house sits in a cul-de-sac, and many believe such locations are undesirable. However, in the tusuk sate area, just a third of the plot’s width, we designed a U-shaped structure.
A feng shui consultant advised that this U-shaped configuration would counteract negative energy associated with the tusuk sate position. By designing a layout that blocked direct exposure to this alignment, we created a more harmonious energy flow.
Another consideration was the west-facing orientation, where the sun sets. To minimise heat exposure, we avoided large openings on the western side, instead directing them toward the north and south, where the light is softer. The U-shape also allowed for a small, tranquil garden, adding a refreshing natural element to the home.
What challenges did you face in designing this house?
One of the biggest challenges was the extended timeline due to the pandemic. The project began in late 2019, but the family only moved in by 2024. There were two years of inactivity due to the global situation.
Another challenge was shifting the owners’ perspective. Initially, they envisioned a grand mansion, but over time, they embraced a minimalist approach. Fortunately, throughout the process, we built a strong relationship, and today, we consider each other family friends.
From a McMansion to a minimalist home, how would you define the style of this house?
I would describe it as Tropical Modern Minimalist. When designing, we didn’t follow a specific style; rather, we focused on making the most of the available land. Why tropical? Because we designed for Indonesia’s humid climate, incorporating cross-ventilation to facilitate natural airflow throughout the house. We also used local materials, including solid wood, natural stone, and marble, reinforcing the home’s connection to its surroundings. The minimalist approach ensured that every element had a clear function, avoiding unnecessary complexity.
As an architect, you’ve designed many homes. Is this project particularly memorable for you?
Absolutely. This house is more than just a structure. It’s a space where a family has built their life. Seeing the homeowners happy in their new home is incredibly fulfilling. After four years of working on this project, I’ve watched their sons grow from children to young adults.
One of the most valuable lessons from this project is that luxury isn’t defined by expensive materials or high-end furniture. True luxury comes from designing a space that maximises the land’s potential and enhances everyday living.
What makes this project especially memorable is the relationship we built with the client. The house may appear simple, but it embodies deep thought and careful planning. That’s what makes it special to us.