Interview with architect Abdurrahman Keleş on natural stone

Architect Abdurrahman Keleş, who blends architectural practice with aesthetics as much as functionality, environmental sensitivity as much as innovation, stands out as a prominent figure with both academic expertise and field experience. Continuing his creative work under Keleş Architecture, the firm he founded, and the creative platform Crazy Architecture, Keleş positions natural stone not merely as a building material but as a narrative tool that gives identity to his projects. In this interview, he offers a broad perspective on the aesthetic and technical values of natural stone in architectural projects, its role in sustainability, material selection in competition projects, and advice for young architects.

Who is Abdurrahman Keleş, Architect?

I am Abdurrahman Keleş, Architect. I was born in Afşin district of Kahramanmaraş. I completed my undergraduate education at Erciyes University, Department of Architecture in Kayseri. I continued my academic journey in architecture in Istanbul and successfully completed my master’s degree at Marmara University.

Throughout my professional career, I have had the opportunity to strengthen both my academic and practical knowledge. During this process, I became one of the founding partners of “Crazy Architecture,” a creative architectural initiative aimed at expanding my architectural vision and bringing innovative perspectives to the industry.

I currently work at my own firm, Keleş Mimarlık, where I continue to produce architectural projects and actively serve the industry. I see architecture not only as a profession but also as a way of life, and I strive to combine aesthetics, functionality, and sustainability in every project.

How do you decide to use natural stone in your architectural projects? What are the main reasons for choosing this material?

My choice of natural stone depends on the context of the project, its aesthetic goals, and functional needs. Stone is a timeless material; it adds a unique character and texture to every structure. Its durability and eco-friendliness align with my sustainability goals. For example, by preferring local stone types, I reduce the environmental impact while integrating the project with the regional identity. Material selection should always strengthen the story of the structure.

What are the aesthetic and technical advantages of natural stone in architecture? Do you encounter any challenges?

Aesthetically, natural stone’s rich texture and color variety adapt to both modern and traditional designs. Technically, it offers high durability, thermal insulation, and longevity. However, challenges such as cost and application sensitivity may arise. For example, the weight of stone requires careful consideration in structural calculations. Therefore, it is necessary to balance budget, workmanship quality, and project scale when selecting stone.

What role does sustainability play in the use of natural stone? What are your environmentally friendly approaches?

Sustainability is a fundamental principle in the use of natural stone. The use of recycled stone or reused waste materials also minimizes environmental impact.

Can you tell us about a project involving natural stone? How did natural stone make a difference in this project?

In a project currently in the design phase, we used local travertine stone both on the exterior facade and in interior spaces. The porous structure of travertine provides thermal comfort, while its warm tones add a welcoming atmosphere to the spaces. This locally sourced material integrates the building with its surroundings and offers visitors an authentic experience. Stone is not just a material; it is a contextual element that tells the story of the project.

What are your thoughts on future innovations in the use of natural stone in architecture?

Natural stone will become even more prominent with technological innovations. Laser cutting and 3D modeling enable stone to be processed into complex forms. Sustainability trends are encouraging the use of recycled stone and low-carbon production processes. It is necessary to produce contemporary, environmentally friendly solutions by blending traditional and innovative approaches with stone.

Question 6: How often do you see the use of traditional materials such as natural stone in competition projects? What is your jury’s approach to the use of such materials?

The use of natural stone is quite common in competition projects, especially in designs that emphasize sustainability and local context. Young designers are offering innovative solutions by combining stone with modern technologies. As jurors, we evaluate the aesthetic, functional, and environmental value that natural stone adds to the project. For example, projects that strengthen local identity with stone or reuse waste stone are often noteworthy. However, we expect the use of stone to go beyond decoration and be based on a conceptual and structural foundation.

In your opinion, what role will natural stone play in the future of sustainable and aesthetic architecture?

Natural stone will play a central role in the future of sustainable and aesthetic architecture. Its recyclability, longevity, and low environmental impact make it an ideal material. Technological advances are enabling stone to be used in lighter and more modular forms, increasing aesthetic diversity. For example, stone surfaces processed with parametric design techniques offer both visual and functional innovations. The effective use of local stone resources and low-carbon production processes will further increase the popularity of stone.

What aspects of projects using natural stone most influence you?

What impresses me most about projects using natural stone is the connection the material establishes with its surroundings. Stone acts as a storyteller, anchoring a structure to its geographical and cultural context. For example, the way the natural texture of stone creates a serene atmosphere indoors or forms a silhouette that harmonizes with the surroundings on a facade is truly captivating.

What advice would you give young designers on using natural materials to create innovative design solutions?

I would advise young designers to focus on local context and technological innovation when using natural materials. They can achieve environmental and cultural harmony by researching the types of stone found in their region. With digital design tools, they can develop creative solutions for stone processing, such as parametric patterns or modular systems. I encourage them to experiment with recycled stone or waste materials for sustainability. Most importantly, they should consider not only the aesthetic value of stone but also its structural and environmental contributions.