London home growth vs TLT
Across the full published history, the London average home value rose 136.8%, while TLT share price converted to GBP rose 28.6%. The chart recalculates its indexed readings from the selected range’s first shared observation.
- Average house price (UK HPI standard average)
- London government office region
- monthly
- Indexed to 100
- Home growth
- +136.8%
- 2003-12 to 2026-07
- TLT growth
- +28.6%
- Selected range
- Growth gap
- +108.2 pp
- Home minus asset
- Frequency
- monthly
- Aligned observations
In the selected Max range, London average home value changed +136.8%, TLT share price converted to GBP changed +28.6%, and the home-minus-asset gap was +108.2 pp.
| Series | First | Latest | Min | Max |
|---|---|---|---|---|
| London average home value | 100.0 | 236.8 | 100.0 | 250.3 |
| TLT share price converted to GBP | 100.0 | 128.6 | 85.9 | 276.9 |
Contains HM Land Registry data © Crown copyright and database right 2020. This data is licensed under the Open Government Licence v3.0. Licence terms.
How this is calculated
Series value ÷ first available value in selected range × 100Each line starts at 100 using the first shared observation available in the selected range. A reading of 150 means that series has risen 50% since that period.
Housing value as published for the calendar month; asset and FX prices are arithmetic means of their available daily closes in the same calendar month.
What the comparison shows
The indexed lines compare percentage growth, not price levels. A widening gap means one series has grown faster since the selected range began; it does not mean the two assets have the same value or risk.
Frequently asked questions
12 answersHow is London home growth compared with TLT?
The aligned home-value and TLT price series are each divided by their first shared observation in the selected range and multiplied by 100.
Why do both lines begin at 100?
A common starting index removes the difference in original price levels. A reading of 150 means that series has grown 50% since the selected range began.
What does the percentage-point gap show?
It is London home growth minus TLT growth over the selected range. A negative gap means TLT grew faster.
Is this a total-return comparison?
No. The chart compares the published home-value measure with the asset price. It excludes dividends, rental income, transaction costs, financing, maintenance, and taxes.
Where do the London housing and TLT data come from?
UK House Price Index (UK HPI) supplies the housing series for London government office region. The TLT series uses TLT from the asset source linked beside the chart. Both are aligned to the page’s monthly frequency.
How many observations are included?
272 aligned observations are shown from 2003-12-31 through 2026-07-31. All are marked complete.
Can the latest growth reading change after publication?
Yes. The previous 12 months are revised monthly as additional registered transactions arrive. Ad hoc revisions may update the full history for methodology, source-data, or processing changes. The page was derived from housing data fetched on 2026-09-18, and later source revisions can change the indexed path and growth gap.
Does a wider growth gap imply causation?
No. The gap describes the difference between London home growth and TLT price growth over the selected range. It does not show that either series caused the other or predict what happens next.
How sensitive is the growth gap to the selected start date?
The gap can be highly sensitive to the base period because both series reset to 100 at the range’s first shared observation. The 1Y, 5Y, 10Y, and Max views answer different historical questions and should be labelled with their chosen window.
Is the growth gap a measure of statistical significance?
No. It is an arithmetic difference between two indexed growth rates. The page does not estimate confidence intervals, volatility-adjusted performance, correlation, or statistical significance.
How do currency moves affect TLT growth?
TLT is converted from USD into GBP for each aligned observation. Its local-currency growth therefore includes both the asset-price move and the exchange-rate move.
How should I cite this observation?
Cite the PIER20 page and access date, then identify UK House Price Index (UK HPI) as the housing source and TLT as the asset series. State that the comparison runs through 2026-07-31 and uses monthly aligned observations.