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Vertical Gardens and Sustainable Timber Rise in Affordable Urban Living

Authors:
Vanessa Randolph, Akhira Ismail
Vertical Gardens and Sustainable Timber Rise in Affordable Urban Living
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With vertical gardens integrated into its facade and a heavy timber structure designed for energy efficiency, the building redefines urban living by providing affordable housing and commercial spaces in downtown Sacramento.
5 key facts about this project
01
Integrates transparent solar cells into south and east-facing windows for energy efficiency.
02
Features an internal green promenade that encourages community interaction among residents.
03
Utilizes a heavy timber moment frame system to enhance structural integrity and sustainability.
04
Adorns the building with deciduous vines for natural shading and aesthetic appeal.
05
Includes commercial storefronts like a clinic and supermarket to serve the community.

Sacramento Timber Tower is a notable building located in downtown Sacramento, designed to enhance the city’s skyline while addressing the need for affordable housing. Standing 28 floors high, this prefabricated sustainable heavy timber structure includes 250 residential units and 15 storefronts, featuring necessary services such as a clinic and supermarket. The design reflects a commitment to integrating residential, commercial, and community spaces, creating an adaptive response to urban living.

Structural System

The building's structural system consists of a heavy timber moment frame. It features two staggered wings oriented to the east and west, connected by a central core and an internal atrium. This layout encourages smooth circulation and connectivity, allowing residents to access common areas easily and promoting community interaction.

Lighting and Sustainability

Natural light is an important aspect of the design. Each southern-facing residential unit is equipped with transparent solar cells integrated into the south and east-facing windows. These solar cells harness sunlight, generating electricity for the building's mechanical systems while also providing a portion of electricity for the units. This integration supports sustainability and contributes to the overall energy efficiency of the building.

Landscaping and Community Space

The timber frame is complemented by deciduous vines that provide solar shading and help control heat gain. Additionally, green plants are carefully placed to absorb solar rays, reinforcing the building’s commitment to ecological sustainability. Vertical gardens along the building create a visual link to the Sacramento State Capitol Park, enhancing the connection between urban living and green spaces.

Internal Promenade

A significant feature of the building is the internal green promenade, designed to offer residents a comfortable and secure area for moving within the space. This path promotes leisurely walks and encourages interactions among residents. Shared spaces throughout the building further support social connections, making Sacramento Timber Tower a community hub.

The design incorporates sculpted green walls that rise up from the structure, bringing elements of nature into the atmosphere. This approach integrates landscaping with architecture, enriching the living environment and strengthening the connection to the surrounding area.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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