Score Validation

We test the current scoring model against a mixed validation set of benchmark archetypes and a smaller number of measured/monitored homes. This page reports where the model aligns and where assumptions still dominate.

Sample size

10

MAE (pts)

5.7

RMSE (pts)

7.0

Correlation (r)

0.99

Confidence distribution

High10

Medium0

Low0

Measured homes: 4 / Benchmark homes: 6

Legend

High / Medium / Low are derived from current confidence metadata.

If the wrapper exposes numeric confidence, buckets are 80+ / 60–79 / <60.

Inferences flagged most often

All benchmark homes have full EPC data — no inferences required.

Avg inferred fields per home: 0.0 (0 = all fields provided)

Filter set:

Filtered MAE 5.7 · RMSE 7.0

Victorian Terrace (Pre-1930)

benchmark

Expected

16

Computed

18

Δ

2

Confidence: 100 · completeness — · ±—

Typical EPC D/E, legacy boiler

1950s Semi-Detached

benchmark

Expected

20

Computed

24

Δ

4

Confidence: 100 · completeness — · ±—

Typical EPC D, cavity unfilled

1960s Detached (Partial Retrofit)

benchmark

Expected

29

Computed

34

Δ

5

Confidence: 100 · completeness — · ±—

Partial cavity fill, condensing combi

1980s Semi

benchmark

Expected

28

Computed

35

Δ

7

Confidence: 100 · completeness — · ±—

Filled cavities, condensing boiler

2000s New Build

benchmark

Expected

33

Computed

41

Δ

8

Confidence: 100 · completeness — · ±—

Part L era fabric + condensing combi

ASHP + MVHR Retrofit

measured

Expected

63

Computed

63

Δ

0

Confidence: 100 · completeness — · ±—

Monitored smart-meter retrofit case

Deep Retrofit Terraced + Solar

measured

Expected

58

Computed

53

Δ

5

Confidence: 100 · completeness — · ±—

Post-retrofit meter data, UK social housing pilot

Passivhaus Retrofit Benchmark

measured

Expected

90

Computed

77

Δ

13

Confidence: 100 · completeness — · ±—

Passivhaus-certified retrofit, <15 kWh/m²/yr space heat

Flat with Electric Resistance Heating

benchmark

Expected

24

Computed

25

Δ

1

Confidence: 100 · completeness — · ±—

Urban flat baseline with high electricity demand

Modern Net-Zero New Build

measured

Expected

86

Computed

74

Δ

12

Confidence: 100 · completeness — · ±—

Operational net-zero home with monitored exports