Balcony House / Ryo Matsui Architects. Image Courtesy of Ryo Matsui Architects Inc
We walk on "flat" ground every day and rarely think twice—but how flat is it, really? In the city, curbs are chamfered, sidewalks pitch toward grates, and roadways are crowned to shed water into shallow gutters. In suburbs and on unpaved paths, irregular terrain is the norm. Inside buildings, by contrast, we pursue near-perfect horizontality—structural frames, slabs, and finishes are all disciplined to create level walking surfaces in the name of safety and accessibility. Yet flatness is inherently at odds with water. A closer look reveals a quiet repertoire of accommodations: slight falls at entries, thresholds raised a few millimeters, wet areas with barely perceptible pitches. The floor is read as flat, but it is in fact carefully tuned—micro-topographies masquerading as plane—to manage water without calling attention to themselves.
What are the common ways architects "keep things flat" while actually managing water—the perennial enemy of buildings? A useful way to look at it is by zooming into three recurring conditions: exterior or roof decking, bathrooms and other wet rooms, and exterior ground planes. Each relies on a slightly different toolkit—pedestal systems over sloped waterproofing, micro-gradients to floor traps, hidden perimeter drains, split slopes—to maintain the illusion of a seamless, level surface. Studying these situations side by side reveals just how much design effort goes into reconciling perceptual flatness with the messy reality.
Urban expansion and increasing population density have fuelled a growing demand for outdoor areas in multi-story apartments, as residents seek to stay connected with nature without leaving home. This trend reflects the challenges of modern urban life, where access to nature is often limited, and public green spaces are increasingly scarce. In this context, features like balconies, loggias, and winter gardens stand out as attractive solutions, offering private spaces for relaxation and enjoyment amidst the hustle of city life. In addition to enriching the urban experience, these spaces enhance the quality of life, providing a personal refuge amidst the urban landscape.
In dense urban living, the ability to connect with the outdoors for enjoyment and for wellbeing becomes starkly important. This became particularly apparent in the COVID-19 pandemic when millions of people across the globe had to be confined to their homes for long periods. Notwithstanding that, as the world increasingly urbanizes, good quality housing design is vital and this includes access to the outside. In a city like London, this need was recognized, and providing an outside space in every dwelling became mandatory around the year 2010. In multi-storey housing, providing outside space usually takes the form of a balcony. The design possibilities are endless, so what are the key considerations when incorporating balconies in an urban residential building?
Whether rising to the highest room of the tallest tower in a Disney-esque castle, giving an admirer the chance to confess their love on an apartment buildingfire escape, or connecting a basement or attic room with a decorative period feature, there’s something unavoidably romantic about spiral staircases. But there’s more function behind these coiling forms than just their good looks.
One common-held theory is that spiral staircases were first installed in historic castles as vertical baffles, tiring out enemy infiltrators before they could make it to the top. This is why – it is said – many are set to turn clockwise on the ascent, so attackers have a smaller arc for swinging weapons (mostly held in right hands) than defenders making their descent.
While hybrid working and flexible hours represent the most obvious ways to improve work/life balance for many, because of the missed social interactions and the lack of space or functionality at unproductive home workspaces, the majority of 16-24-year-olds are the only age group who prefer to work from the office.
Sloped terrain offers a tantalizing prospect for developers. With breathtaking views over either natural or urban landscapes, often without the realistic possibility of being overlooked by future development, a parcel of land on a slope provides a high reward. However, whether it’s the extra excavation involved to cut and fill or cantilever out on a flat surface, the complications of water drainage, or the loss of light and difficulty of access at the front of the property, building on sloped terrains is not without its difficulties.
But it’s not necessarily the angle of the site that’s most at fault, it’s the shape of the building. By splitting up a multi-story structure and repositioning – possibly even disconnecting – each level, projects designed to comply with the existing topography by applying multiple ground levels can reduce the amount of excavation required. The split floor plan can also help to improve access and natural light and increase both interior and exterior space.
The concept of "eyes on the street" is perhaps the most famous within architectural and urban literature when it comes to urban security. Jane Jacobs uses this expression to refer to people who - consciously or unconsciously - use public spaces or observe them from their homes, generating natural surveillance. A movement that, within our discipline, is encouraged both through quality public spaces and through the powerful relationship between the public and private created through building facades. Advocating for this daily control, Jacobs believes in a way of making architecture and cities that condemns excessive verticalization, reinforced by isolated buildings and single-use ones that deny contact with the street
A historic symbol of the industrial age, the sawtooth roof is a lasting legacy of architectural history. Although a functional invention born from necessity nearly 200 years ago, the iconic shape is enjoying a renaissance in many contemporary projects.
Made up of many long, thin roofs with irregular pitches laid alongside each other, a sawtooth roof positions its steeper edges – filled with glass panels – away from the equator. This allows large buildings to control their solar gain by omitting direct sunlight, while still allowing uniform indirect natural light to fill an entire interior area.
As the temperature drops in the Northern Hemisphere, cold outdoor spaces are overcome with frost, ice, and snow, and we find ourselves rushing from one heated indoor environment to the next, less willing or less able to stop and appreciate the natural world around us.
Apart from dragging a spruce or fir tree inside and dressing it up in yuletide costume, we tend to leave the real natural world to its own seasonal devices until it reemerges in Spring. However, by inviting the positive effects of plant life into our homes, we can improve both our mental health and the air we breathe by filling them with peace and joy all year round, not just at Christmas.
Balconies provide residents with great views while literally and figuratively looking down on the neighbors, but they also offer numerous other advantages.
Videos
Scene from "Enter Through The Balcony" trailer. Image Courtesy of Minimal Movie
Taking advantage of a lack of governmental regulations, many Ukrainians turn to their balconies to compensate for the shortage of space in prefab-Soviet housing, rebuilding them in a variety of shapes and sizes. The short documentary Enter Through The Balcony explores this phenomenon in Ukrainian architecture, revealing a compelling image of post-Soviet history through local everyday life and culture.
In addition to showcasing a unique attitude towards private versus public space, the makeshift balconies phenomenon is also a symptom of the dramatic pendulum swing from mass uniformity and anonymity, to freedom of expression and ownership of private space, which shaped attitudes and architectures across the former Eastern bloc after 1991.
Of the things i really love about maintaining this blog is that it gathers architects from all around the world. In this case, the people from ZLG Design in Malaysia sent us their project for the BOH Visitor Center through our contact form – same as many other offices we will publish in the next days. Everyone is invited!
This great building -my personal favorite in the last month- is located in Malaysia, overlooking an amazing landscape. I think that its tectonic work really frames the natural surrounding.
Architect: ZLG Design Team: Huat Lim, Susanne Zeidler, Jimmy Wong, Mary Verhaeghe, Hong Chieh Location: Sungai Palas, Cameron Highland, Boh Visitor Centre, Malaysia Locale description: Tea plantations and factory Site area: 12,168.32 sqm Built area: 1,233.8 sqm Building start: November 2005 BUilding completion: July 2006 Budget: USD$498,652.29
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