While modular, panelized, and container-based construction are frequently touted as solutions to the U.S. housing crisis, their comparative efficacy is rarely tested under controlled field conditions. This paper addresses this gap by offering a comparative analysis of four recently-completed single-family homes built simultaneously within a three-block radius by the same construction team using four distinct, and innovative, construction systems: container-based, panelized, flat-pack, and volumetric modular.

Based upon documentation from the developer and construction team, as well as billing data from energy service provider, this study measures and compares the performance of the four construction typologies used in terms of cost, time-to-completion, and energy consumption, evaluating them in comparison with each other, and to the industry at large. Results indicate that while all the systems included in this study outperformed industry averages by at least 25%, performance varied significantly between each approach. Notably, a hybridized approach, which combined panelized envelope systems with generative design and digital fabrication, emerged as the most efficient, while the volumetric modular (manufactured) approach significantly underperformed the others.

Because these results were realized within a controlled environment, this paper offers empirically grounded insights regarding the specific impact of each of these construction approaches in the creation of cost-effective, eco-friendly, and high-quality housing. More broadly, the study demonstrates how small-scale, locally implemented studies can generate grounded strategies for the delivery of affordable and energy-efficient housing.

The construction industry is among the most environmentally impactful sectors, characterized by high levels of resource consumption, waste generation, and ecological degradation. Addressing these challenges requires the adoption of renewable, biodegradable, and low-energy materials (Camere & Karana, 208). Mycelium-based composites, grown from fungal mycelia on organic substrates, represent a promising alternative (Elsacker et al., 2020). Lightweight, insulating, compostable, and energy-efficient to produce, these materials exemplify the convergence of biological processes and architectural innovation (Elsacker et al., 2021; Stelzer et al., 2021). However, despite their technical and environmental potential, their integration into mainstream construction remains limited due to technical uncertainties, aesthetic perceptions, and cultural stigmas (Van den Broek et al., 2024; Wang et al., 2024).

This study explores the acceptability and perceived identity of mycelium-based materials among construction professionals through focus groups. These included comparative material analyses, pre- and post-exposure assessments, and speculative design exercises designed to evaluate participants’ sensory, cognitive, and symbolic responses. This methodology provided a comprehensive understanding of how professionals perceive and assess this emerging biomaterial within the broader context of sustainable construction practices.

The results reveal ambivalent attitudes, ranging from appreciation to reservation. Although participants acknowledged mycelium’s environmental benefits and its alignment with circular economy principles, they expressed concerns related to its unfamiliar organic appearance and its association with decay and contamination. These perceptions reflect a persistent cultural bias: fungi, historically viewed as agents of deterioration, are rarely recognized as constructive materials. The findings highlight the need for aesthetic reframing, technical validation of material properties, development of implementation strategies compatible with existing practices, and broader cultural recontextualization to foster greater acceptance.

Mycelium-based composites represent a paradigmatic shift of construction materials from inert to living matter, from waste to regeneration, and from the fear of decay to the embrace of natural cycles as a foundation for sustainable architecture.

Solutions to complex problems in architecture can be found in small, unusual items. Advances in design solutions are also seen in material innovations. Steel and reinforced concrete allowed for new building types like skyscrapers. A small, unusual item that can be used as an innovative building material is mycelium. Mycelium is the network of roots for mushrooms. This organism is found globally. It breaks down waste, sequesters carbon, is a rapidly growing renewable resource, and is biodegradable.

More examples show the benefits of mycelium. Ecovative Design uses it in their Mushroom Packaging. The Living built a tower using mycelium blocks, the Hy-Fi, in New York City. These examples fueled the curiosity to conduct experiments in this emergent material, labeled MycoMasonry in this research. The goals were to 1) research mycelium as a viable alternative material, 2) understand construction methods that could be utilized in the classroom and studio, and 3) seek potential applications for the marketplace.

A research grant provided the opportunity to conduct experiments on the mycelium bricks and how the addition of clay brick dust affected its performance. The MycoMasonry bricks made were tested based on their compression strength, fire resistance, water absorption and durability.

This study describes the process of creating baseline bricks, ‘recipes’ for adding brick dust, and the four testing methods, plus a durability test.

The goal of utilizing this research in the classroom has already been realized and is expected to grow. The next goal of technology transfer has also materialized with a local manufacturer of structurally insulated panels (SIPS) interested in researching the replacement of Styrofoam in their products.

The applications of mycelium as a building material are growing to address complex global issues using local solutions and this research is adding to this growth in a unique manner.