Four official sources worth bookmarking before you buy on the coast

Every autumn, the coastal property market gets a fresh round of commentary. Prices are up, sales are down, buyers are changing, rates are about to move. Some of it is useful. Much of it is out of date by the time you read it.

This month we are doing something a little different. We have kept this note free of figures on purpose. Numbers on this market get revised, restated and reshaped by whoever is quoting them, and a number repeated from memory is how people end up making plans around something that is no longer true.

Instead, we want to hand you the four official sources that the rest of the commentary draws on, explain what each one actually measures, and suggest how to read them as someone standing on the buyer's side of the table.

Why the same market produces different headlines

The Costa del Sol and the Costa Blanca are not one market. A flat in central Málaga, a villa above Marbella, a townhouse in Estepona, an apartment in Torrevieja and a house in Jávea or Moraira each sit in their own world of buyers, supply and seasons. A headline that averages them into a single "coastal" figure tells you very little about the street you are looking at.

There is also a difference between what is asked, what is agreed and what is registered. We have written about that gap before, and it is worth remembering whenever you see a price quoted. Different sources measure different moments in the life of a sale, so they will rarely agree, and that is normal rather than suspicious.

The practical answer is to go to the source and read it with the right question in mind.

The four sources

• INE (Instituto Nacional de Estadística). The national statistics office publishes a monthly count of home transfers and a quarterly housing price index, broken down by region and province. It is the best place to see the broad direction of travel for Málaga and Alicante provinces over time. It is slower and broader than a local agent's view, but it is consistent.
• Notariado (the notaries' official statistics). Because notaries sign the deeds, their data is built from the transactions themselves, including the prices written into them and how many were financed with a mortgage. It is a good check against the asking prices you see on the street.
• Registradores (the property registrars). Their reports include the nationality of buyers and the share of purchases that are by people resident abroad. If you want to understand who is buying on each coast, this is where to look, and it is worth reading the method notes so you understand what is and is not counted.
• Banco de España. For borrowing, the central bank publishes the mortgage rate statistics and the Euribor series that most variable and mixed-rate mortgages follow. If you plan to borrow in Spain, this is the page that tells you what the cost of that looks like now, not a year ago.

What to look for in each

With INE, look at the shape over several quarters rather than the latest print. One month of sales counts can move because of the calendar, a holiday or a registry backlog. A trend across a year is much more telling than a single reading, and the province-level split matters more than the national headline.

With the notaries and registrars, pay attention to the gap between the number of sales and the prices paid. Our earlier piece on why prices can keep rising while fewer sales are recorded explains why those two things can sit together without contradiction: fewer sales, in a market where good homes are scarce, can still leave prices firm.

With the Banco de España, ask a simpler question. If you borrow, what rate would you actually be offered, and for how long is it fixed? That one answer shapes your monthly budget more than almost any headline about the market.

A statistic tells you where the market has been. It cannot tell you whether a particular house, on a particular street, is right for you.

Beyond the statistics

Official data has real limits. It lags, it averages, and it cannot see the things that make one building better than the one next door: the state of the roof, the community's finances, the noise at night, the light in the living room in January.

This is also why autumn is a good time to look in person. The summer crowds have thinned, the beach bars are calmer, and a town like Torrevieja, Fuengirola or Calpe starts to show you its ordinary rhythm. If you can spend a few days walking the streets at different times, you will learn more about a neighbourhood than any index will tell you.

It is also the moment to separate what is new from what is merely repeated. Changes to taxes, residency rules or regional regulations come from the BOE and the regional governments, and they are worth checking at the source before you rely on a summary, including ours. If a rule affects your plans, ask a local adviser to confirm how it applies to your situation.

What this means if you are starting your search now

Start with the sources, not the commentary. Bookmark the four above, spend an evening with the province tables for Málaga and Alicante, and note what is steady and what moves around. You will quickly develop a feel for what counts as ordinary.

Then choose a coast, and within it a town, before you choose a house. The two coasts feel different day to day, and the data only becomes useful once you know which pocket of it applies to you.

Finally, build in room for the costs and the pace of the process. Taxes, notary and registry fees, and the time a purchase takes all vary by region and by property, so ask for them in writing from someone you trust rather than relying on a rule of thumb.

When you are ready to talk

We are not an agency, and we do not sell property. If you would like help turning all this reading into a shortlist, or an introduction to a vetted local lawyer, adviser or agent on either coast, get in touch. We would be glad to point you to the right person, with no pressure and no timetable but yours.