Abstract: The subject of the study is the functional and spatial organisation of artificial land plots (ALPs) and the principles governing their placement within the planning structure of coastal territories. The study analyses the role of ALPs as an instrument for expanding territorial resources and transforming the planning framework of coastal cities subject to intense urbanisation pressure under constrained conditions for urban development and densification. It examines a hierarchical system of external factors — engineering-environmental and regulatory-legal — that establish strategic constraints on ALP placement, and internal factors — socio-economic, transport-engineering, and functional-planning — that determine the specific spatial organisation of ALP territories within defined boundaries. The study investigates factor interactions within an iterative framework of "external factors + internal factors = planning decision", ensuring the progressive narrowing of admissible design options from the regional scale down to the detailed territorial planning level. The methodological basis of the research is a systems approach integrating: comparative analysis of international and domestic experience, including methods of historical analysis; comprehensive assessment of ALP placement factors; statistical processing of analytical and experimental data; mathematical modelling of the permissible ALP area with regard to water body parameters; and a design experiment conducted at three pilot sites. For the first time, a two-tier system of external (engineering-environmental and regulatory-legal) and internal (socio-economic, transport-engineering, and functional-planning) factors governing the spatial and planning organisation of ALPs in coastal territories has been substantiated in the article, and a functional-planning organisation model for coastal territories incorporating ALPs has been developed, comprising a set of measurable parameters for evaluating placement effectiveness. Model validation at three sites along the Black Sea coast of Krasnodar Krai — the Matsesta Shoreline in Sochi, Gelendzhik Bay, and the Novorossiysk Port basin — confirmed its predictive validity: deviation from adopted project decisions did not exceed 9%. Stable quantitative patterns of factor influence on ALP parameters have been identified: the design area; the transport zone; and the type of functional specialisation, which determines the territorial balance structure considerably more strongly than the absolute area of the ALP. The multi-level methodology developed ensures continuity of planning decisions from regional spatial planning schemes of Russian Federation constituent entities to detailed territorial planning documentation, and lays the groundwork for the development of a specialised regulatory and methodological framework within the urban planning system for Russia's coastal territories.

Keywords: artificial land plot, coastal territories, planning structure, reclaimed territories, territorial planning, Krasnodar region, waterfront, functional zoning, mathematical model, coastal zone