1 · Population
The whole Muse Selection register — every resale residence the site publishes, 7,150 of them on this snapshot, read page by page from the same source /search and the landing pages count. Not a sample of it: until 13 August 2026 the index read a 1,372-row feed snapshot instead, which is why the figures moved.
2 · Sources
Three regional feeds behind that register — Inmobalia (REST), Resales-Online and Zoddak (new-build). New developments are excluded from the index itself: a scheme quotes a from-price for a whole complex, so counting one as a residence would skew the median it sits in.
3 · Deduplication
The same residence is frequently syndicated to several feeds and listed by several agencies. Rows are collapsed on photograph identity and specification before anything is counted, so one home is one listing.
4 · Catalogue floor
Filter to residences priced from €350,000 — the catalogue's own floor since 31 July 2026. POA (price-on-request) listings are admitted only when Muse-exclusive, and are excluded from €/m² maths.
5 · €/m² computation
Price ÷ built area, per residence. Values below €1,000/m² or above €60,000/m² are dropped as feed errors (plot mislabels, missing areas). The same band applies to every zone and every price.
6 · Per-zone aggregation
Group by zone — the site's own zone resolver, so a residence sits in the same zone here as on the landing page that lists it. A zone appears from four priced residences and is quoted as a number from five. 167 zones currently carry a row, 145 of them a quotable figure.
7 · Headline figures
Median (headline) and average €/m², median asking price, and the min–max range — recomputed on every snapshot, with the sample size printed beside each.
- 13 August 2026 — population and floor
- Figures published before 13 August 2026 are not comparable with these. On that date the index changed in two ways at once. Its population moved from the hourly feed snapshot (1,372 rows) to the full MUSE Selection register (6,758 resale rows), the same population every other counting surface on this site reads. Its floor moved from €1,500,000 to €350,000, following the catalogue floor the site has published since 31 July 2026 — the index had never followed it, so it went on measuring 597 listings in 17 zones and calling that the market. Measured the same day, old against new: 597 listings became 6,758, the all-zone median asking rate €6,885/m² became €5,000/m², and the median asking price €2,935,000 became €775,000. Roughly a third of the rate move is the population and the rest is the floor: the register at the old €1,500,000 floor measures €7,179/m². Only one index is published, at €350,000; no cut is published at any other floor.
- Are the figures asking prices or sale prices?
- Asking prices of currently-listed residences. Spain does not publish per-property closing prices, so a published-catalogue index is the most granular openly-available benchmark. We never present asking figures as transaction prices.
- What is the €350,000 floor and why?
- Residences priced from €350,000 enter the index — the same floor the Muse Selection catalogue itself publishes at, so the index measures exactly the register a reader can browse. It is not a market-wide census: nothing below €350,000 is counted, and the figures should not be read as "the price of the Costa del Sol".
- Why did the figures change on 13 August 2026?
- Figures published before 13 August 2026 are not comparable with these. On that date the index changed in two ways at once. Its population moved from the hourly feed snapshot (1,372 rows) to the full MUSE Selection register (6,758 resale rows), the same population every other counting surface on this site reads. Its floor moved from €1,500,000 to €350,000, following the catalogue floor the site has published since 31 July 2026 — the index had never followed it, so it went on measuring 597 listings in 17 zones and calling that the market. Measured the same day, old against new: 597 listings became 6,758, the all-zone median asking rate €6,885/m² became €5,000/m², and the median asking price €2,935,000 became €775,000. Roughly a third of the rate move is the population and the rest is the floor: the register at the old €1,500,000 floor measures €7,179/m². Only one index is published, at €350,000; no cut is published at any other floor.
- Why report the median rather than the average?
- The median price per square metre is far less distorted by a single trophy listing than the mean. We publish both; the median is the headline figure.
- How often does the index update?
- The underlying catalogue snapshot is refreshed daily from the source feeds; per-zone pages reflect the latest snapshot. The quarterly edition label marks the editorial cut.
- Can I reuse the data?
- Yes — the dataset is licensed CC BY 4.0. Reuse it with attribution to "Muse Selection Marbella Property Index (museselection.es/marbella-property-index)". A machine-readable CSV is published at /api/marbella-property-index.csv; every row carries its sample size and the floor it was measured at.