What the data says about Guernsey
Not opinions — arithmetic. Each of these came out of the registers and the listings themselves, and each links to the page it was computed from so you can check it. 13 of them today.
Geography
Where is the biggest price gap in Guernsey?
The median home in St Pierre du Bois asks £1,950,000; in Alderney it asks £445,000. Same island, 4.4× the price.
What would make this wrong: It compares what is on the market, not like for like. An area of large houses will always beat an area of flats, whatever the land underneath is worth.
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What things cost
Which bedroom costs the most in Guernsey?
Going from 4 bedrooms to 5 adds £405,000 to the median asking price — more than any other step on the ladder.
What would make this wrong: A 5-bed house is not a 4-bed house with a room added — it is usually a bigger plot in a different place. This is the price of a different kind of home, not the price of a bedroom.
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History
Has Guernsey property ever actually fallen?
Yes — 2016 was down 4.1% on the year. Across the whole series the index has gone from 100 in 1995 to 591.2, but it has not been a straight line.
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How people behave
How long do people keep a home here?
Half of all repeat sales are 3.1–9.9 years apart, with a median of 5.5 years. That is how often a given address comes back to the market.
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Asking prices
Are sellers in Guernsey asking more than the market has moved?
On the 246 homes for sale that also appear in the sold register, the median asks 9.8% more than the index says its own last sale is now worth. 182 are above the index, 64 below.
What would make this wrong: The index cannot see what has been done to a house between sales. A property extended since it last sold should ask more than the index says, and plenty have been.
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Planning
What is hardest to get permission for in Guernsey?
Applications for change of use are granted 88% of the time, over 176 decisions; loft or dormer 98% over 59. Both are high — refusal is rarer here than people assume.
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Development
Where is Guernsey actually being built?
St Peter Port accounts for 29% of every new dwelling proposed on the island — 350 of 1,211.
What would make this wrong: Proposed, not built. One large scheme can carry a whole parish, and a refusal or an abandonment leaves the number standing.
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Geography
Which is the dearest road in Guernsey?
Ruette Irwin Fort George, St Peter Port — a median of £2,437,500 across 16 recorded sales. The busiest road on the register is Ville Au Roi with 201.
What would make this wrong: Roads are matched from the register's own address text, so a short prestigious road with few sales can be beaten by a long ordinary one. The median spans the life of the register, not today.
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The market
How concentrated is Guernsey's market?
Three agents hold 45% of everything advertised — 271, 167, 125 listings out of 1,240. 21 agents share the rest.
What would make this wrong: It counts adverts, not sales. An agency that lists everything it is asked to and one that sells everything it lists look identical here.
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The market
Do agents agree on what a house is worth?
73 properties are marketed by more than one agent here. Both figures are published as given.
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Supply
What is the cheap end of Guernsey actually like?
Only 67 of 982 homes for sale — 6.8% — ask £300,000 or less. The bottom of this market is thinner than most people expect.
What would make this wrong: Cheap homes sell fastest, so at any moment the bottom of the market is under-represented on any listings site, including this one.
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Renting out
Where does renting out pay best in Guernsey?
St Martin's shows the widest gap between rents and prices at 6.8% gross, against 3.8% island-wide.
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This week
What has moved in Guernsey this week?
958 listings appeared, 7 had their price cut and 1 went up. We read every agent's site overnight, so this is the week as it happened.
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The island most like this one
On asking price and market size, Andorra is Guernsey's closest match anywhere on this site — a median of €860,000 (£736,743) against £745,000 (£745,000), across 747 listings against 1,147. Put them side by side
What the same money buys elsewhere
The median Guernsey asking price, converted, against other islands' medians.
| Island | Their median | What Guernsey money buys |
|---|---|---|
| Samoa | WS$250,000 | 10.9 homes at their median |
| Dominica | $204,598 | 5.0 homes at their median |
| Belize | $235,000 | 4.3 homes at their median |
| Bahrain | BD 90,000 | 4.3 homes at their median |
Converted at the previous day's reference rates. It compares medians, not like-for-like houses — an island of flats will always look cheap against an island of villas.