The Russian architectural code as a multi‑level system: a method of implementation through the architectural code of the city

The article examines an author-developed model for implementing the Russian architectural code through city architectural codes. The Russian architectural code is defined here neither as a uniform historical style nor as a catalogue of national decorative motifs, but as a multi-level system of cultural and spatial continuity. The national level establishes principles and invariants of environmental quality; the city level interprets them through local history, landscape, morphology, scale, materiality and everyday practices; and the territorial level turns them into verifiable rules for a specific place. It examines the transition from value principles to differentiated regulations, recommendations, and criteria for evaluating architectural solutions across morphological zones. The research combines systems and multi-level approaches, a comparative review of urban morphology and regulatory approaches to architectural and urban design, historical and morphological analysis, cartographic and legal-source analysis, case-study logic and normative mapping. The city is proposed as a necessary mediator between nationwide meanings and individual architectural decisions. The basic unit of translation is not a style but a morphological zone with identified carriers, invariants and an appropriate continuity regime. Comparability between city codes is achieved through a common data and decision structure rather than through visual standardisation. A city architectural code does not replace land-use and development rules, urban-planning regulations, architectural and urban-design appearance requirements, planning documentation or design briefs. Instead, it produces evidence-based proposals that may become binding only after their incorporation into an appropriate instrument by a competent authority. The methodological framework consists of seven parallel workstreams and seven development stages; the sequence “evidence — carrier — invariant — morphological zone — continuity regime — rule — pilot — monitoring”; seven modes of intervention in urban fabric; a provenance register for each rule; and a correspondence matrix linking each rule to possible statutory and procedural instruments.