The intuition is straightforward: prime postcodes drive London prices. The data, once you decompose it, tells a more interesting story. Since 2020, the Location Premium factor — the quality-adjusted reward for being in a sought-after geography — has been pulling upward, while Price Tier — the premium paid for being at the top of the local price distribution — has been pulling downward. The two largely offset, which is why the headline London index has felt directionless even as the internal composition of returns has not.
In our hedonic model, Location Premium captures the cross-sectional reward for being in a higher-scoring location at a given month, holding floor area, type, age and energy rating constant. Price Tier captures something subtler: the additional premium (or discount) attached to being in the top quantile of the local price distribution — a "prime-of-prime" effect that runs on top of geography. They are designed to be orthogonal, and since 2020 they have behaved that way with unusual clarity.
Cumulatively, since the first window we plot (Nov 2018), Location Premium is up roughly +0.8% across the dataset while Price Tier sits at -2.9%. Most of that Price Tier drag is concentrated in the 2020–2022 window, when the "race for space" pulled relative bids toward mid-tier suburban stock and away from the top of the distribution. Over the most recent 12 months (Oct 2024 → Oct 2025), both factors have gone quiet: Location Premium +0.1%, Price Tier +0.0%. Over the latest 3 months (Jul 2025 → Oct 2025), Location Premium has slipped -0.1% and Price Tier is flat at +0.0%. The tug-of-war has paused; it has not reversed.
| Factor | 12-month return | Interpretation |
|---|---|---|
| Baseline Market | -4.6% | Quality-adjusted London-wide level fell over the year. |
| Location Premium | +0.1% | Geographic premium broadly steady after a multi-year drift up. |
| Price Tier | +0.0% | Top-of-distribution premium flat after a multi-year compression. |
| Floor Area | -1.2% | Per-sqm reward to extra space declined modestly. |
| New Build | +0.4% | Small new-build premium re-emerging. |
| Energy Rating | -0.3% | EPC reward roughly flat, slight discount this year. |
The chart below shows cumulative factor returns rebased to 0% in January 2020 — so each line answers "how much has this factor added or subtracted to a London property's quality-adjusted price since the eve of the pandemic?" Location Premium and Price Tier diverge sharply through 2020–2022 and have since stabilised at the spread they opened up.
The cleanest reading of the chart: yes, prime locations kept their reward — Location Premium drifted positive through the post-pandemic re-rating and is sitting roughly +0.5–0.8% above its January 2020 level depending on the month. But the top of the price ladder within each location did the opposite. Price Tier compressed sharply in 2020–2021 (peak suburban-space bid) and again in mid-2022 as the rate cycle hit the most rate-sensitive ticket sizes hardest. Buyers continued to pay up for postcodes; they stopped paying up for being the most expensive house on the street.
An average price index that rolls these effects together will look becalmed. The factor view shows two real, opposing forces: a steady geographic premium and a multi-year compression at the top of the distribution. For anyone underwriting prime London specifically, the Price Tier line is the one to watch — its 12-month return is now flat (+0.0%), the first time it has stopped falling in over three years.
Interactive charts for every factor, updated monthly.
Open London Factors →Methodology: factor returns are derived from rolling 3-month cross-sectional OLS regressions of log price-per-sqm on property characteristics, using HM Land Registry transactions joined to MHCLG EPC records. Full details on our methodology page. The most recent 2–3 months are excluded from quoted figures because rolling windows have not fully updated.