Guernsey house price index
What Guernsey property prices have actually done since 1995, measured from 4,293 occasions where the same house sold twice. Because both sides of every comparison are the same property, this tracks the market itself rather than the mix of what happened to come up for sale in a given year — the flaw in any simple yearly average. 1995 = 100.
Hold time only counts properties that have sold at least twice since 1990 — homes still in the same hands since before then, or bought once and never resold, can't appear, so true average ownership in Guernsey runs longer than this figure.
What would a past price be worth now?
Enter an address to find its sales on the States register and carry each price forward at the island-wide index. This is an indexed figure, not a valuation — it applies the island average to one specific house, and knows nothing about its condition, its extensions, or what has been done to it since.
The States register records an address, a date and a price — and no market status. Nothing in it says whether a sale was Open Market or Local Market, so an Open-vs-Local index would have to be built on a guess, and it isn't offered. The only market data this site holds is what agents declare on current listings, which is why stock levels and yields can show the split and this page can't. Parish is in the address, so that filter is real — see below.
By parish
A parish index is only offered where that parish has at least 250 repeat sales of its own — enough for the regression to mean something. Torteval has 55 pairs; an index built on that would be noise dressed as a trend.
The index, year by year
| Year | Index (1995=100) | Change on the year | Sales used |
|---|---|---|---|
| 2026 year to date | 591.5 | -0.8% | 110 |
| 2025 | 596.2 | +3.3% | 173 |
| 2024 | 576.9 | +3.8% | 168 |
| 2023 | 555.6 | -3.9% | 145 |
| 2022 | 578.1 | +20.4% | 251 |
| 2021 | 480.3 | +2.8% | 261 |
| 2020 | 467.3 | +13.0% | 275 |
| 2019 | 413.6 | +3.0% | 239 |
| 2018 | 401.6 | +4.0% | 225 |
| 2017 | 386.3 | -2.8% | 214 |
| 2016 | 397.5 | -2.9% | 182 |
| 2015 | 409.2 | -1.9% | 168 |
| 2014 | 417.3 | -2.6% | 201 |
| 2013 | 428.5 | +2.1% | 205 |
| 2012 | 419.5 | +6.4% | 274 |
| 2011 | 394.2 | -2.4% | 301 |
| 2010 | 403.9 | +11.4% | 339 |
| 2009 | 362.7 | +2.2% | 312 |
| 2008 | 354.9 | +9.1% | 289 |
| 2007 | 325.5 | +7.8% | 413 |
| 2006 | 301.8 | +6.1% | 399 |
| 2005 | 284.4 | +2.0% | 354 |
| 2004 | 278.9 | +5.3% | 364 |
| 2003 | 264.7 | +9.9% | 337 |
| 2002 | 240.9 | +14.2% | 393 |
| 2001 | 210.9 | +9.0% | 329 |
| 2000 | 193.6 | +25.1% | 322 |
| 1999 | 154.7 | +1.1% | 299 |
| 1998 | 153.0 | +17.3% | 261 |
| 1997 | 130.5 | +12.4% | 289 |
| 1996 | 116.1 | +16.1% | 272 |
| 1995 | 100.0 | base year | 222 |
Every property on the States of Guernsey register that has sold at least twice since 1995 contributes one pair per consecutive sale. The change between each pair is fitted across all 4,293 pairs at once using the Bailey-Muth-Nourse repeat-sales regression — the same approach behind the Case-Shiller and Nationwide indices. Nominal £1/£10/£100 family and inheritance transfers are excluded, as are pairs less than nine months apart (usually one transaction recorded twice) and pairs more than 8x apart (a rebuild, or a data error).
Repeat-sales indices run slightly hot. If a house was extended between its two sales, the index reads that improvement as market growth, because it only ever sees the two prices. That biases this and every other repeat-sales index a little upward, and there is no way to correct for it from register data alone. Years are also uneven: 2026 is still in progress, and the thinnest published year rests on 110 sales, so single-year moves are noisier than the long-run trend.
This is not an official statistic. The States of Guernsey publish their own mix-adjusted house price index quarterly, built on a different method and the full transaction set — where the two disagree, theirs is the authority.