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Geothermal Energy and Concrete Integration Define Sustainable Urban Housing

Author:
Timothy Ung
Geothermal Energy and Concrete Integration Define Sustainable Urban Housing
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Harnessing geothermal energy and incorporating a high-efficiency concrete envelope, the design achieves a net-zero energy goal while providing vital affordable housing in an urban context.
5 key facts about this project
01
Utilizes geothermal heat pumps for efficient climate control.
02
Features a high-efficiency concrete envelope for enhanced durability.
03
Incorporates operable curtain walls to optimize natural ventilation.
04
Design includes adaptable floor plans catering to diverse family structures.
05
Integrates public amenities to foster community engagement and interaction.

### Project Overview

The Net Zero Public Housing project located at 225 West 28th Street in New York City aims to provide affordable housing within a dynamic urban context, closely linked to the Fashion Institute of Technology. The initiative addresses the increasing need for affordable housing amidst rising real estate costs, emphasizing sustainability and adaptability in design. The concept incorporates modern building technologies, enabling a comfortable and energy-efficient living environment for future residents.

### Material Resiliency and Efficiencies

The project strategically employs **concrete** for its structural and aesthetic qualities, recognized for durability and low maintenance, thereby aligning with historical design practices in public housing while updating them for modern requirements. Additionally, the building utilizes a **high-efficiency building envelope** and integrates systems such as geothermal heat pumps and solar panels, aiming to achieve net zero energy consumption. Key materials, including rigid insulation, enhance thermal performance, while operable curtain walls facilitate natural ventilation and daylight access, empowering residents to modulate comfort within their living spaces.

### Community Engagement and Flexible Residential Layouts

Public spaces within the development are designed to foster community interaction, featuring a **community bookstore** linked to the Fashion Institute of Technology and a **boutique clothing store** that encourages local engagement. Residential layouts are adaptable, offering one-bedroom and two-bedroom units configured to accommodate varied family structures. These designs prioritize social interaction while maintaining necessary privacy, contributing to a cohesive community atmosphere. Additionally, passive cooling techniques, such as strategically placed balconies, enhance environmental adaptability, improving overall resident comfort and reducing energy usage.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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Competition organisers

The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 October 2025

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