Purpose of the Data Scope Definition
This module defines the scope of the residential dataset used for Johannesburg. Its purpose is to establish clear boundaries around what the dataset includes, what it excludes, and how these limits shape interpretation. The focus is on methodological clarity rather than analytical inference.
What the Dataset Includes
The dataset consists exclusively of observable residential listings published through formal channels. It captures the presence, categorization, and circulation of listings as they appear on platforms over time. The dataset records visibility events rather than residential stock, occupancy, or transactional outcomes.
What the Dataset Excludes
The dataset does not include the full universe of residential properties within Johannesburg. Residential units that are not formally listed, are exchanged through informal arrangements, or are continuously occupied without publication are structurally excluded. Informal housing segments and non-platform-based rental or sale activity are therefore not represented.
Scope Boundaries and Representation Limits
The scope of the dataset is bounded by participation in listing platforms and by platform-specific categorization rules. These boundaries determine which properties become visible and how they are labeled spatially and typologically. As a result, the dataset reflects how residential offerings are presented rather than how residential space is fully constituted.
Implications for Interpretation
All observations derived from the dataset must be read within its defined scope. Visibility should not be equated with availability, scale, or prevalence. This module establishes a baseline constraint that applies across citywide, submarket, and district-level analyses, ensuring that interpretation remains aligned with what the data can support.