Blog : Tropical Design

Lee Cherng Yih and Caleb Ong, of Formzero: A Modern Tropical Design Duo Integrates Greenery into the Urban Landscape

Lee Cherng Yih and Caleb Ong, of Formzero: A Modern Tropical Design Duo Integrates Greenery into the Urban Landscape

/ Petaling Jaya, Malaysia /

/ Story: Natthawat Klaysuban / English version: Bob Pitakwong /

/ Photographs: Courtesy of Formzero /

The publishers of room and Living ASEAN have the pleasure of introducing Lee Cherng Yih and Caleb Ong of Formzero, Petaling Jaya, Malaysia, an architectural practice specialized in contemporary Tropical design. The two architects are renowned for their untiring advocate of sustainable residential design and creative ways to decorate with plants. Their eager embrace of green concepts has enabled the works of Formzero to stand out from the crowd. Worthy of attention are homes carefully thought out to blend beautifully with the surroundings and Tropical climates prevailing in peninsular Malaysia. In a few words, it’s about creating urban living spaces where people and greenery thrive in close physical association.

In addition to a distinguished career in design, the pair also teaches architecture at a university in Malaysia. Their working life in academia has given them the opportunity of combining formal knowledge with hands-on experience in the fields. One of their signature works is the “Planer Box House”, a narrow front home in Kuala Lumpur adorned with edible gardens growing luxuriantly from the ground up all the way to the rooftop deck. At the risk of stating the obvious, it’s designed to answer the need of a homeowner who has a preference for growing plants.

Together they give the home instant curb appeal that’s quite a departure from what people expect to see in a residential neighborhood. From architectural perspectives, it’s about finding a balance between sustainable living and overcrowding in the big city. According to the architects at Formzero, it’s a building design, style and classification that “go beyond the typology”.

Lee Cherng Yih and Caleb Ong were among expert guest speakers at the design talk titled (Re)Thinking inside the Box: Vol. 1 Living in Small Urban Spaces. Discussion topics include, among others, the challenges that test the abilities of architects, ways to deal with site constraints and ideas for improving in the quality of urban life. Fundamentally, it’s about raising public awareness of the issue and the importance of well-thought-out design in solving the problem of limited space in the city, especially in Southeast Asia.


Q: Basically, how would you describe Formzero?

Lee Cherng Yih: Formzero is a design studio under the leadership of myself, Lee Cherng Yih, and Caleb Ong. Besides the two of us, we also have a five-strong design team. Established in 2012, our office has been up and running for 12 years now. As an architectural practice, from day one we’ve focused our attention on creating designs that could effectively respond to the challenges of Tropical climates. We looked into how green spaces could be integrated in building design. In central respects, that’s pretty much the heart of our studio.

Q: From your perspective, how would you define Tropical architecture?

Lee Cherng Yih: In my opinion, Tropical architecture can be seen from two different points of view. First, it’s an architectural style that embraces climatic conditions prevailing in the locality. I’m not saying that everyone can live in a place without air conditioning. Rather, I’m talking about finding a balance between sustainability and energy consumption in homes. That said, we need a design that works, one capable of dealing with weather that changes seasonally.

Secondly, we cannot trust everything in the physical world, and the built environment on top of that. As humans, we are part of nature. We should make appropriate adaptations to fit in well with a new environment, rather than trying to change the environment to suit our needs. I think that these two points of view are of the utmost importance as we try to understand and reap the benefits of living in Tropical climates.

The Window House / Photographs: Ronson Lee – Twins Photography

Q: What’s your opinion on urban environments in Southeast Asia? How does the ecosystem of an urban area influence your work as designers?

Caleb Ong: Nowadays, urban areas across the region have become more densely populated, giving rise to the problem of lack of privacy. That said, we have to create spaces where people can live without being constantly observed or disturbed by others. Everybody wants to feel safe and protected from disruptions that come with living in a crowded place.

Lee Cherng Yih: In my opinion, it’s obvious that population growth only exacerbated the problem of overcrowding in urban areas. At the same time, there’s a need to protect the ecological sustainability of the planet. And that’s where well-thought-out design comes into play as we adapt to changes in our lives. It’s a challenge that tests the abilities of architects like us. We have to find a balance between urban living and saving the environment.

Planter Box House / Photographs: Ameen Deen

Q: Can you give a few examples that are the signature of your design studio, either completed or under construction?

Lee Chern Yih: The first project, called Windows House, is a home in Kuala Lumpur. It has double layer façades for two reasons. First, they are designed to keep direct sunlight out of the rooms during the hottest hours. Then, because the homeowners had expressed privacy concerns, we solved the problem for them by putting in architectural elements extending outward from the building facades. As a result, the inner walls perform a dual function providing sun protection while creating semi-outdoor room that’s snug and cozy. Meanwhile, the facades built of perforated materials make the home feel light and airy.

The Window House / Photographs: Ronson Lee – Twins Photography
The Window house / Photographs: Ronson Lee – Twins Photography

The second project, known as Vertical Park, is a high-rise building, which we entered into a competition. It’s located in a city where open public spaces are few and far between. So we experimented with the idea of incorporating greenery as the integral part of the building’s communal areas, business spaces, even children’s playgrounds. Together they form the building façade overlooking the street below. It’s an idea that begs the question. What is the façade, anyway? Is it a public space? Or is it a business venue? It’s both. We incorporated fun ideas in the design to invite people to visit for pleasure.

Vertical Park / Courtesy of Formzero
Vertical Park / Courtesy of Formzero

The third project, called Planter Box House, is a home adorned with edible landscapes thriving on the front façade and rooftop deck. The principal face of the building holds planter boxes of concrete made for growing vegetables and fruit trees. It’s designed to blend in with other homes in the area, giving rise to conversations and promoting neighborly relationships. Needless to say, it caters to the homeowner who loves growing plants. Like a farm, it even has a place to store water for growing crops.

Planter Box House / Photographs: Ameen Deen
Planter Box House / Photographs: Ameen Deen

Q: To wrap it up, how would you define “sustainability” from your perspective? And how does sustainable design benefit your line of work?

Caleb Ong: I think that, viewed in its essential qualities, sustainable design is about finding ways to reduce energy use and creating a living space that’s easy to care for. In the big picture, sustainable design requires less energy to build and is flexible in terms of building performance. These are qualities that enable the building industry to thrive while causing the least impact on the environment.


(Re)Thinking inside the Box is a series of discussion events focusing on the issues abovementioned. It’s all a matter of perspective about what can be done to address the problem of limited living space in the city. It’s a forum for people to explore new possibilities and look at the problem from within, thereby turning a challenge into a solution. Hence, the title is (Re)Thinking inside the Box, as an alternative to outside-the-box thinking.

As part of the room X Living ASEAN Design Talk 2024, (RE)Thinking inside the Box Vol. 1 is on the theme of “Living in Small Urban Spaces”. Here, expert guest speakers will discuss ways to create small living spaces and enhance the quality of life, at the same time shedding light on site constraints, challenges, and possibilities for building decent homes in urban areas. In the fewest possible words, it’s about promoting good life and a good living environment.


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The Journey of Studio Miti: An Atelier Expert at Materials and Design Integrations Fit for Tropical Climate

The Journey of Studio Miti: An Atelier Expert at Materials and Design Integrations Fit for Tropical Climate

/ Bangkok, Thailand /

/ Story: Kor Lordkam / English version: Bob Pitakwong /

/ Photographs: Nantiya June /

Studio Miti is founded by Prakit Kanha and Padirmkiat Sukkan, two architects who have been friends since college. They attended the same school of architecture at a university. Since 2010 the architectural firm has won acclaim for its expertise in materials science skills and ability to integrate knowledge of design with the circumstances that form the setting of worksite surroundings. Having earned many architectural design awards over the years, Studio Miti is clearly living up to his name.

The story of Studio Miti had its beginnings at a workbench inside a rented room that doubled as their humble abode. As the amounts of work increased, the pair thought it wise to move into a decent workplace. They moved several times to different places, among them a rental space on the ground floor of an apartment block that, albeit small, became their first design studio.

The turning point in their career as architects came as the company grew and grew to the point they decided to move again, this time to a permanent home with a brick façade showcasing materials that speak volumes about their ideals and corporate identity.

Studio Miti Padirmkiat Sukkan
Studio Miti’s new office showcases the building’s principal face capable of staying open and shut as needed as one of its main design features.

For almost 15 years, Studio Miti has kept firmly to its guiding principle in design, one that combines knowledge of design with an understanding of the context that forms the setting of a place, plus the ability to research the structure and properties of materials used in construction.

In the fewest possible words, it’s about knowing what the materials are made of and how they can be used so as to achieve the best results and aesthetic appeal. Equally important is the ability to create design that’s conducive to improving the quality of life plus charm, good looks that inspire.

Studio Miti Padirmkiat Sukkan

The company’s unflinching determination to stand by its design principle and beliefs is reflected in the looks of its new office set amidst the bustle of the Lad Phrao Soi 71 neighborhood in Bangkok where it moved into in 2024.

It’s an old townhouse that has since been lovingly restored as an office. It showcases the front façade covered in lightweight concrete blocks in dark gray that conveys a great deal about Studio Miti’s ideals and in-depth visions guiding its actions.

We have the pleasure of meeting with Padirmkiat Sukkan, co-founder of Sudio Miti, and getting to know more about the company’s design concept, plus taking a tour inside their new office. Join us in discovering the secrets behind the building façade crafted of gray concrete blocks, plus the design concept and beliefs that have put Studio Miti in a class in itself.


Q: Tell us about your journey, design principles and beliefs that guide your actions.

A: “As you know, Studio Miti has moved office several times over the years. Every time we moved, we did some experiments on the materials that we used. We tried to weigh the work we did to determine its essential quality. We believe in using real materials. By that is mean that we use pure materials in their original visual shape, color and texture without over embellishments.”

Studio Miti Padirmkiat Sukkan
Flashback: Studio Miti’s old office building showcases brick façade ideas in every direction.
Despite its solid brick exteriors, Studio Miti’s old office building feels open and airy, thanks to skylight systems that turn the interior into a well-lighted place.
Enclosed workspace inside Studio Miti’s old office provides freedom from external disturbances, making it easy to stay focused during the work day. Plus, it’s adequately lit by overhead skylight systems.

“At our current location, we used mostly bricks as the material of choice. We experimented on brick constructioon as well as bricks and steel. This time, we tried using lightweight concrete blocks as the main material instead.

“In fact, we found it by chance at a worksite. We were using the product and, out of the blue, it broke at the seams at the midpoint. We discovered a curving contour inside it.

“It looked interesting when touched by light. So we took it apart and looked inside it. The effect was good by a touch of light. I thought we could build the entire building facade using this material. And we did. The same applied for other parts of the building, too.”

Studio Miti Padirmkiat Sukkan

“We implemented this project, renovating an old townhouse built some 30 to 40 years ago. There were site limitations that we had to deal with. The external envelope was opaque, being built entirely of brickwork. It came with one restriction; a complete teardown was not permitted.

“So we created a building façade that’s capable of being open and shut as needed so as to control the amounts of natural daylight shining into the interior, thereby making it easy to stay focused during the work day.”

“Actually, we are interested in the design process. We look for ways, by which the tools that we use in designing diagrams can also be applicable or relevant to the materials being used as well.

“Oftentimes we put the materials to the test ourselves. It gives us confidence in doing designs, plus the benefits that come from touching it and getting the feel of the materials. It’s an important approach that we use.”


Q: What’s your thought on using real materials and creating Tropical design?

A: “On real materials and Tropical design, I regard the two concerns as being part of one cohesive whole.

“In a warm and humid climate like ours, first, I say we have to understand and be able to use the sun and the winds prevailing in the region to our benefit. It’s very basic to begin with. If we have the opportunity and the owner agrees and likes what we do, then we can develop the materials that we need together.

“And when it comes to using pure materials, I feel they are beautiful without being over embellished. We just need to find out how design can be used to make them look beautiful with little or no modification. To us, understanding the materials and how to them is of the utmost important.”

Studio Miti Padirmkiat Sukkan
A meeting room-cum-recreation space on the ground floor feels bright and breezy, plus it’s easily modified to respond quickly to changing needs and activities.
Studio Miti Padirmkiat Sukkan
A meeting room for receiving clients is glazed using clear glass to admit natural daylight into the interior.

“Speaking of knowledge of a Tropical climate, I feel it’s a must-have for architects. Thai architects, especially, must have a good understanding of sunlight, the heat, humidity and the cold. They are the basics. To create designs, knowing all the basics takes priority over any other matter.

“But more than anything else, me have to make sure the kind of architecture that we create represents the owner. If not, at least it must speak volumes about the place, about the site and the context that forms the setting around it.”


Q: Help me understand some of the work you did in the past? A few examples, perhaps?

A: “To show you some of our past achievements and the results of our experiments, I say we used bricks. Bricks were the material that we used often. As for wood, we used that often, too. We used brickwork mixed with wood in the construction of Athita the Hidden Court Chiang Saen, a boutique hotel in Chiang Saen District of Chiang Rai Province. It’s a hybrid of brick and timber.”

Studio Miti Padirmkiat Sukkan
Athita the Hidden Court Chiang Saen, a boutique hotel in Chiang Saen District of Chiang Rai, Thailand’s northernmost province. / Courtesy of Studio Miti
Athita the Hidden Court Chiang Saen / Courtesy of Studio Miti
Athita the Hidden Court Chiang Saen / Courtesy of Studio Miti
Athita the Hidden Court Chiang Saen / Courtesy of Studio Miti

“If I may show you a project built entirely of bricks, or brickwork mixed with steel, it’s the “High Brick House” or “Baan Look Moo”.

Studio Miti Padirmkiat Sukkan
High Brick House / Courtesy of Studio Miti
High Brick House / Courtesy of Studio Miti
High Brick House / Courtesy of Studio Miti
High Brick House / Courtesy of Studio Miti

“In fact, we’re working on another one, too. I believe bricks release the heat faster. We’re working on a house project called “Baan Yoo Yen”. It’s built entirely of bricks. The wind blows through it, keeping the interiors nice and coo. It benefits from traditional beliefs about Tropical design. By creating indoor thermal comfort, we can rely less on air conditioning.”

Studio Miti Padirmkiat Sukkan
Baan Yoo Yen / Courtesy of Studio Miti
Baan Yoo Yen / Courtesy of Studio Miti

“Every piece of work has its distinct character. It’s a quality of being aesthetically pleasing that lies deeper than traditional beliefs per se, even deeper than knowledge of a Tropical climate. I’m referring to an understanding of human nature, and knowledge about the circumstances around a worksite. They are the mystery we’re trying to unravel, leading to further development.”


Q: Tell us about the Goal of Studio Miti, or the object of your ambition.

A: “As for the goal of Studio Mini in ten years from now, I want to provide an idea foundation for younger members on the team today. I believe we have the capacity to develop further.

“There’s still a lot to learn. There’s more to it than design in and of itself. It may involve understanding the context that forms the setting of a place, be it socially or economically. There are lessons to learn going forward. The transmission of knowhow from us to younger members on the team is important. We want to provide the tool they can take with them.”

Studio Miti Padirmkiat Sukkan
High ceilinged workspace inside Studio Miti’s new office is well-lit by natural daylight. Among others, the redesigned building facade can open and shut as needed to provide privacy and freedom from external disturbances, making it easy to stay focused on the task at hand.

“If I get lucky, we will move forward together. If I get luckier, they may move on to their future undertakings, where they continue to grow in their line of work. But everyone must have the basic knowledge to begin with, knowledge about the climate prevailing in Thailand, knowledge about the context that forms the setting of a place.

“It’s something that’s more than meets the eye. That’s the basics that will help them grow and mature and, at the same time, give us the old guards at Studio Miti the impetus to grow and develop as well.”

“I believe the future of our office isn’t up to me alone. Rather, it comes from younger members on the team who must understand this, and work together toward a common goal.”


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PSA: A Lush Compact Tropical House in Chiang Mai

PSA: A Lush Compact Tropical House in Chiang Mai

/ Chiang Mai, Thailand /

/ Story: Wuttikorn Suthiapa / English version: Peter Montalbano /

/ Photographs: Soopakorn Srisakul /

In house design, the phrase “limited space” raises worrisome questions for some. Here, though, homeowner Sarin Nilsonthi used modern Tropical design techniques and inner space connectivity to build large-house functionality and comfort into a compact house plan.

“I designed this house on one A4 sheet of paper,” said Sarin with a smile.

“Since it’s small, I tried to write down all the functionality we’d need on a single sheet of paper, and named the house ‘PSA,’ from ‘Paper Series A.’ I can still recall entertaining the idea of living in a small Tropical home with all necessary features and conveniences neatly fit into it.”

Compact Tropical House

Overall, it’s a small house plan that takes account of the size and comparative relation to a whole. Like so, post and beam construction is done in somewhat unusual ways to create the right kind of space in each part.

“We didn’t set the beams and posts this way because we wanted to, but in order to set things up in the right way. Still, anyone living in this house will have to be the same height as my wife and I,” Sarin said smiling.

Compact Tropical House

Upon our arrival, the first thing we saw was a massive steel panel which the homeowner left rusted on purpose to show a stylish authenticity of construction materials. The principal front that looks onto the street shields the second floor from heat while showing off the shipping-container design of the office area. Below is a carport paved with fine gravel reaching up to the house entrance.

Compact Tropical House
The carport and relaxation area beneath the home office section.

Compact Tropical House

Sarin intentionally kept the front yard fence low to create a clearly defined “inside the fence” area. There’s a gravel yard with benches and trees which actually becomes a part of the house itself. The house walls are rough concrete all around, and H-beams sunk into the yard support the office section, which is raised above a lower area where Sarin and his wife Pairin Boonpinid plan to open a café in the future.

Compact Tropical House
This inner courtyard tree is integral to the design, adding shade and a refreshing atmosphere to the home.

Inside, on the lower floor, the living room, dining area and kitchen are all connected, each ceiling at a different level. For good ventilation and a sense of spaciousness, the living room has a double height ceiling. Nearby, the ceilings in the dining area and kitchen are set slightly lower, with electric lighting giving them each a unique identity.

The staircase has no railing, so is accessed from any direction; you can just walk down to sit and relax in the dining area, which is also used to store kitchen necessities: spices, condiments, even a refrigerator.

The living room with a double height ceiling and tall glass windows.

Openings in the exterior walls are perfectly arranged to let air and light in for a spacious feeling.

Going up the stairs and turning left brings us into the container-shaped office, the rusted outer wall reaching up to the third floor as protection against heat. The container surface is rainproof, with a layer of insulation between it and a plywood surface that gives an orderly look to the interior. There is also a houseguest bedroom on this floor that’s currently being used as a reading room, but planned as Air B&B tourist accommodation once the café opens.

The workroom opens to greenery on both sides. It includes storage space and a large table for work and meetings.

The entrance to the master bedroom is in the back, accessible via a corridor next to the kitchen; Sarin designed it as a separate building so as to remain private when the café/hostel section opens. It’s accessed without going through other sections of the house. Here the floor is raised up above the ground as protection against moisture damage, and there is a skylight above for indirect lighting.

This bedroom has an overhead storage space reachable by ladder. The closet for clothes is below with a bed directly on the floor to give more space, and a bare cement ceiling positioned to reflect light indirectly.

All the above features combine to give this compact house a comfortable, airy feeling, enhanced by imaginative placement of openings for breezes and natural light.

Sarin refers to the greenery and openness as creating “breathing space,” as rooms are all interconnected, airy, sunny, and in touch with the natural world. He likens this house to a well-tailored suit: the tailor has to measure, ask about the wearer’s taste, and plan everything to be comfortable and pleasing. A truly beautiful design!

Compact House
The bedroom in the back rests on a slightly raised floor.


Architect: D KWA Architectural Design Studio


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