A structured evaluation of seventeen urban evolutionary theories has established that French regulation theory and urban niche theory provide the most analytically robust theoretical foundation for modeling urban DNA, according to a study published by researchers Sadhana Manthapuri and Ralph P. Hall in Frontiers of Urban and Rural Planning. The investigation addresses a persistent limitation in urban planning and regional governance, where the concept of urban DNA has gained widespread prominence since the early 2000s and accelerated during post-pandemic recovery strategies, yet has frequently lacked theoretical grounding and empirical calibration. By systematically analyzing the literature across urban economics, sociology, geography, and planning, the authors identified how cities evolve through structured processes rather than randomized events. The resulting conceptual framework moves beyond popular place-branding metaphors and marketing slogans, defining urban DNA through five core interrelated elements consisting of urban uniqueness, temporal variation, spatial variation, growth, and stability. Through this grounding, the framework offers an operational, dual-capacity analytical tool designed to help municipal planners and policymakers decode the underlying genetic mechanisms that drive long-term metropolitan development, adaptation, and transformation.
The study highlights how previous scholarship and policy initiatives engaged with urban DNA primarily through metaphorical comparisons or isolated analytical modeling exercises. First introduced by Silva in 2004 as a signature identifying regional uniqueness without compromising universality, urban DNA has subsequently been associated with regional planning, urban growth coefficients analogous to biological proteins, foundational initial conditions, and cultural systems. Earlier modeling efforts included dynamic systems models, neighborhood transition analyses adapting social DNA sequencing concepts, and cellular automata formulations such as the DG-ABC model combining agent-based modeling with the theory of planned behavior. However, the researchers observed that these existing approaches encountered substantial limitations, including forced pattern fitting, normalization processes that risked oversimplifying local urban contexts, an absence of empirical calibration in governance, and difficulties in distinguishing symbolic marketing values from structural realities. Furthermore, following the COVID-19 pandemic, major metropolitan administrations increasingly referenced urban DNA in recovery agendas, such as New York City designating resilience as its DNA and Detroit identifying innovation, alongside strategic initiatives in Melbourne, Oslo, London, and Glasgow. Despite this interest, municipal slogans such as entrepreneurial, worldly, or raw often addressed external audiences while obscuring foundational structural realities.
To construct a rigorous theoretical basis, Manthapuri and Hall conducted a systematic review evaluating seventeen evolutionary theories against five standardized evaluative criteria. These criteria comprised urban uniqueness, defined as the capacity to explain place-specific trajectories and local identity; temporal variation, measuring the ability to account for historical contingency, path dependence, and evolution over time; spatial variation, evaluating explanatory sensitivity to morphological structures and territorial differentiation; growth and stability, assessing the articulation of conditions supporting economic dynamism alongside institutional resilience; and DNA theme relevance, reflecting alignment with regulatory structuring and niche emergence. The authors employed a three-tiered coding methodology in a structured relevance matrix to grade each theory consistently based on existing literature: assigning no mention where a variable received little or no reference, indirect mention where the variable appeared without being a primary focus, and direct mention where the variable formed a core organizing principle. This systematic mapping demonstrated that although individual evolutionary frameworks explained specific urban dimensions, none in isolation accounted for the complete genetic process or the full spectrum of interdependent variables shaping cities.
The comparative evaluation demonstrated that French regulation theory and urban niche theory exhibited the highest analytical strength across economic, environmental, technological, and socio-cultural dimensions. Rooted in critical political economy, regulation theory interprets urban environments as non-neutral spaces shaped by historically contingent institutional compromises, legal frameworks, and spatial fixes that stabilize accumulation regimes. It accounts for why structural formations, property regimes, and land-use hierarchies persist or resist change despite administrative reforms, providing an explanatory basis for institutional lock-in, inherited genetic factors, and crisis-driven transformations. Conversely, urban niche theory, originating in autecological concepts of adaptive survival under shifting ecological conditions, provides an analytical framework for localized socio-spatial experimentation. Niche dynamics capture how organizational, cultural, and market spaces function as incubators where urban actors test alternative models under institutional uncertainty or technological transitions. While regulation theory articulates how macro-level governance stabilizes urban systems, niche theory explains how micro-level innovations emerge, mutate, and influence urban trajectories, creating an intertheoretical synergy that captures both structural continuity and adaptive change.
Within the proposed framework, the researchers establish a fundamental distinction between latent urban genes and observable urban phenotypes. Urban genes represent the deep-seated, underlying structural codes and institutional mechanisms of a city, while urban phenotypes constitute the outward, measurable manifestations and physical expressions of those underlying configurations. For instance, a longstanding land tenure regime operates as an urban gene, which may phenotypically express itself as informal settlement patterns or spatial inequalities across metropolitan neighborhoods. In an alternative scenario, an embedded municipal culture of public innovation functions as an urban gene, generating phenotypes such as community-driven planning districts or adaptive public transit networks. By formalizing this division between genetic codes and phenotypic expressions, the framework enables urban researchers and regional authorities to conduct both longitudinal and comparative evaluations, analyzing how identical genetic structures yield divergent physical outcomes across different metropolitan settings, or conversely, how comparable urban forms can arise from entirely distinct genetic lineages.
The structural foundation of the urban DNA framework is divided into regulatory codifiers and niche codifiers, which together steer metropolitan evolution. Regulatory codifiers represent historically embedded institutional arrangements that balance spatial, governance, and economic components. These include modes of regulation, encompassing the institutional ensembles of state agencies, legal rules, permit regimes, tax incentives, and specialized departments that coordinate capital accumulation; regimes of accumulation, reflecting dominant patterns of production, inter-firm linkages, labor distribution, and market relations; spatial fixes, consisting of long-term investments in physical infrastructure and land use to control uneven development; and socio-technical environment standards that institutionalize technological changes. In parallel, niche codifiers govern localized evolutionary environments and encompass four foundational properties: niche width, which measures the breadth of resources, temporal cycles, and spatial domains utilized by urban organizations; niche overlap, indicating the degree of resource competition or operational redundancy among urban actors; niche coordination, measuring systemic coherence among ecological, economic, and social niches; and the distinction between fundamental niches representing ideal developmental conditions and realized niches constrained by institutional competition.
Connecting the underlying genetic codifiers to observable urban outcomes, the framework identifies four gene expression pathways that determine how traits are activated, suppressed, or recombined across urban environments. The first pathway involves policy translation mechanisms, which serve as formal instruments guiding how localized experimental innovations transition into mainstream statutory regulations, planning codes, and commercial practices. The second pathway consists of spatial feedback loops, characterized by recursive interactions between the physical built environment and societal, economic, or ecological responses that either reinforce or destabilize specific genetic expressions. The third pathway operates through cultural and cognitive translation, where memetic diffusion and knowledge institutionalization determine which emerging practices become integrated into broader urban expectations. The fourth pathway comprises infrastructure network systems, including energy grids, transit corridors, and digital platforms, whose technical configurations, spatial reach, and institutional alignments selectively enable or constrain the scalability and visibility of specific urban traits.
Through these expression pathways, underlying genetic codifiers manifest as urban traits, which the framework categorizes into endowed, inherited, and acquired classifications. Endowed traits are dictated by fixed geographical and ecological conditions, such as topography, territorial location, regional climate, and proximity to natural water resources, which establish baseline constraints for settlement. Inherited traits are historical legacies transmitted over long developmental cycles through persistent physical infrastructures, institutional traditions, and established commercial pathways, exemplified by historic roadway alignments or enduring maritime trading commitments. Acquired traits reflect dynamic contemporary phenomena, such as technological breakthroughs, international migration flows, major policy decisions, or hosting global mega-events that actively alter city pathways. These multifaceted traits subsequently shape urban identity, which the authors define as the dynamic synthesis of collective narratives, symbolic reputations, and external perceptions held by residents and external observers, reflecting continuous interplay between enduring regulatory institutions and adaptive niche-level transformations.
To transition the framework from theoretical conceptualization into municipal planning practice, Manthapuri and Hall outline four operational actions supported by two illustrative case evaluations. The first operational step requires path-dependence analysis through archival research to uncover historical legacies and growth cycles often neglected in contemporary planning models. The second action involves trait mapping via extensive stakeholder engagement with residents, planners, civic organizations, and policymakers to inventory shared and contested community traits. The third action conducts data-driven identification of genetic variables, drawing upon empirical indicators derived from evolutionary theories. The fourth action emphasizes prioritizing local analytical specificity over broad generalizations by disaggregating municipal data to reflect localized regulatory intensities and cultural patterns. In an empirical application to San Francisco, the authors demonstrated that the gross receipts tax operated as a critical regulatory codifier influencing corporate relocation choices and gross domestic product shifts, illustrating how framework modeling could have aided officials in anticipating how post-pandemic remote work would weaken payroll apportionment revenues.
A second comparative application evaluated place-branding policies in the Dutch municipalities of Rotterdam and Amsterdam, contrasting superficial branding slogans with verified genetic characteristics. Prior research revealed that municipal authorities often relied on projected lineages rather than empirically validated attributes, with Rotterdam adopting descriptive slogans including international, worldly, entrepreneurial, and raw while leaving aside core dimensions of diversity, whereas Amsterdam organized identity around trade and innovation through public campaigns. The authors emphasize that applying the urban DNA framework allows municipal authorities to replace generic promotional rhetoric with verified regulatory codifiers, such as planning codes and migration governance, alongside niche codifiers including entrepreneurial ecosystems and workforce diversity. Manthapuri and Hall conclude that while their study establishes a theoretically grounded framework rooted in regulation and niche theories, future research must incorporate additional empirical case studies and explore supplementary evolutionary theories to validate genetic variables, ultimately enabling cities to construct more equitable, resilient, and authentic developmental trajectories.
Subject of Research: Evolutionary theoretical framework for conceptualizing urban DNA in planning and policy
Article Title: Developing a conceptual framework of urban DNA using evolutionary theories
Article References: Manthapuri, S., & Hall, R. P. (2026). Developing a conceptual framework of urban DNA using evolutionary theories. Frontiers of Urban and Rural Planning, 4(1), Article 4. https://doi.org/10.1007/s44243-026-00076-7
Image Credits: AI Generated
DOI: 10.1007/s44243-026-00076-7
Keywords: urban DNA, urban planning, French regulation theory, urban niche theory, evolutionary urbanism, urban policy, place branding, urban morphology, institutional governance, urban traits, Developing, conceptual
