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Cross-Laminated Timber Homes on Small Urban Lots

Author:
Lingqing Xu
Cross-Laminated Timber Homes on Small Urban Lots

Project in-detail

Utilizing cross-laminated timber, the design maximizes small urban lots in Philadelphia to create flexible, sustainable housing tailored for millennials in need of affordable living options.
5 key facts about this project
01
Utilizes small, 10-foot wide urban plots for innovative housing solutions.
02
Incorporates a water recycling system for sustainable resource management.
03
Features customizable living spaces to meet diverse resident needs.
04
Employs cross-laminated timber for reduced carbon emissions.
05
Integrates photovoltaic panels for renewable energy generation.

The project addresses the housing needs of millennials in Philadelphia, a growing group that now makes up forty percent of Central City’s population aged between 20 and 34. As the cost of housing rises, many find themselves unable to purchase homes, leading to a demand for new solutions in urban housing that are both affordable and practical.

Site Utilization

Located in South Philadelphia, the design takes advantage of small, undeveloped plots of land that exist between existing homes. These lots, generally around 10 feet wide, have often been deemed too narrow for effective home construction. By converting these neglected spaces into affordable housing units, the design aims to maximize urban land use and provide a suitable option for young people.

Flexible Design Approach

The layout focuses on flexibility and adaptability. The homes are crafted to be more than just basic shelters; they are designed to cater to the varied needs of residents. Personalization is encouraged, especially along the west wall and in certain areas of the upper floor. This allows future inhabitants to tailor their spaces according to their own lifestyles and preferences.

Sustainability Integration

A key feature of the design is its commitment to sustainability through innovative construction methods. Cross-Laminated Timber (CLT) is chosen for its ecological benefits, supporting carbon retention from managed forests. This material is efficient for construction, as it can be pre-cut using CNC technology, simplifying the on-site assembly process and saving time and labor.

Upper Level Functionality

The upper level layers essential living functions such as storage, cooking, relaxation, dining, sleeping, and multipurpose areas into a compact arrangement. This efficient use of limited space enhances living conditions without sacrificing comfort. Additionally, photovoltaic panels placed on the south-facing roof harness solar energy to power household appliances, reinforcing the focus on sustainable living.

The design not only provides a way to meet the housing demands of an urban population but also fosters community and environmental responsibility. Skylights are used strategically, allowing natural light to flood in and nurture the plants in the integrated indoor garden space. This detail enhances the overall living experience while promoting a connection to nature amidst urban surroundings.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
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