Skip to main content
Back to BrickMap

Methodology

How BrickMap reads a property

BrickMap is designed to help buyers and investors ask better questions before they spend time or money on a property.

Sold evidence first

The engine prioritises Land Registry sales, exact-address sale history, postcode evidence, and nearby comparable transactions before relying on wider area benchmarks.

  • Exact recent sale history gets the strongest weighting when it exists.
  • Comparable sales are filtered for recency, distance, and property similarity before they shape the headline value.
  • The app now separates exact-property sale history from broader comparable-sales evidence so users can see whether the valuation is anchored by the same address or just nearby market context.
  • Outcode or postcode benchmarks are fallback guardrails, not ideal substitutes for strong comparables.

Rent is treated as a benchmark

Rental figures are shown as evidence ranges where possible. When direct rental evidence is thin, BrickMap labels the confidence clearly instead of pretending the number is certain.

  • Rental comparables rank above ONS / VOA area benchmarks.
  • Area benchmarks can still be useful, but they are broader and should not be mistaken for exact market rent.
  • Fallback curve-based rent is a last resort when direct evidence is not available.

The score is a decision aid

DealScore combines price position, rental yield, evidence confidence, planning context, and risk signals. It is not a survey, mortgage valuation, legal report, or financial advice.

  • A high score does not remove the need for viewing, legal checks, or financing checks.
  • A low-confidence score can still help with triage, but it should not drive final pricing decisions on its own.
  • BrickMap is strongest when sold comps, rent evidence, and a matched local market area are all present together.

How to read confidence

Confidence should be treated as a signal about evidence quality, not just a design badge.

  • High confidence means the output is anchored in stronger direct evidence.
  • Medium confidence means the answer uses a mix of direct and benchmarked inputs.
  • Low confidence means BrickMap is leaning on fallback logic and broader heuristics.
  • A low-confidence result can still be useful for triage, but it should push you toward more manual verification rather than quicker commitment.