A property market is the system of buying, selling, and pricing real estate within a geographic area. A practical analysis starts with a vague stakeholder goal—helping customers explore Welsh property prices—and turns historical sales data into an app prototype. section 10.2.1
Useful property-market questions include:
- How do median sale prices differ between counties? section 10.4.3
- How do transaction counts and prices change over time? section 10.4.3
- How do property types compare across counties? section 10.2.1 section 10.4.3
- Can users inspect prices at street level? section 10.2.1
Welsh property-market prototype
A prototype can combine county median-price charts, annual transaction counts, county-by-year heatmaps, property-type comparisons, and ridgeline plots showing price distributions. The analysis finds geographic disparity, falling transaction counts, and generally higher detached-property prices across counties. section 10.4.3
Figure 10.27 A heatmap showing property prices across county and property type
Use the county-by-property-type heatmap to compare median prices across two stakeholder-relevant dimensions. section 10.4.3
