The process of designing this home extension began with the challenge of creating an extension to a structure that had been in place for nearly two decades since its initial construction. The original building was completed in 2008, while they carried out the expansion in 2025. This time gap is not merely a matter of changing spatial needs, but also involves bridging two distinct design eras—connecting the context of the old building with the requirements of the new one.
The Design Of This Home Extension Involves Bridging Two Distinct Eras | PSA Studio
They began the design process with a review of the original concept of the existing building, which they had designed as a women-only boarding house with a family-oriented approach. Located in a densely populated area, the presence of a women’s boarding house at that time was a rather sensitive issue. They addressed this by placing the reception area at the front and using transparent materials to provide visual access to the surroundings.
The architects carried out material exploration through the use of vertically arranged corrugated GRC. It allowed for a visual connection between the interior and exterior without completely blocking the view. In terms of massing, they divide the building into several units. They placed the reception area, communal spaces, and the landlady’s room at the front. They located the dormitory rooms in the central area. This ensured that they could monitor all activities in accordance with the concept of supervision within a family environment.
In addition to examining the concept, they also conducted a functional analysis to understand and accommodate the shift in function that has occurred. The primary function of the home extension remains as a residence, differing only in the duration of stay.
In its previous function as a boarding house, the duration of stay was typically longer. Whereas for a guesthouse, the duration tends to be shorter, such as for weekend getaways or staycations. In light of this, they made several adjustments to the interior layout, particularly regarding which parts they needed to retain and which parts they would demolish or renovate.
The front building area has been mostly preserved with minimal changes, particularly regarding the facade materials. They have been left as-is due to their unique details that define the architectural identity. The previously spacious garden area has also undergone only a slight reduction to accommodate additional functions. It includes the addition of a swimming pool as an extra recreational facility that enriches shared activities, especially for families.
The design focus shifted to the rear area. Adjustments are made to accommodate new space requirements without compromising the quality of the existing open spaces. Designing the new home extension, they carried forward the existing design language in a mirrored form. They created continuity between the old and new structures.
They use the mirrored form of this building as an architectural metaphor for reflecting on the past—how they do not merely preserve existing forms and characteristics, but also reinterpret them to better respond to current needs.
They realize this reflection through improved material quality, natural lighting, and more optimal air circulation, making the spaces feel more alive and encouraging more dynamic interactions. While the old building featured denser details, the new building adopts a more open approach through the reduction of wall elements and the use of more transparent materials.
Through this approach, the relationship between interior and exterior spaces remains a key element of the building’s spatial experience. The outdoor areas are designed to remain shaded and comfortable despite being in an open space, while from inside the rooms, residents can still feel a sense of connection to the surrounding landscape and activities.
As a result, the boundary between interior and exterior becomes more seamless, creating a living experience that blends with the environment while fostering a warm and relaxing vacation atmosphere.
Fact File
Designed by: PSA Studio
Project Type: Hospitality Architecture Design
Project Name: Serindang House 2
Location: Kecamatan Beji, Indonesia
Principal Architects: Ario Wirastomo & Ditta Astrini Wijayanti
Photograph Courtesy: Mario Wibowo
Lead Team: Sukma Harwanti
Team Design Credits: Riezky Meina, Aghni Hauna & Sasqia Nurul Azmi
Landscape Architecture: Desain Padu
Technical Team: Muchammad Sjahroni, Heri Setyawan
Source: Archdaily
Firm’s Website Link: PSA Studio
The Firm’s Instagram Link: PSA Studio
Firm’s Facebook Link: PSA Studio
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