House prices stall in August compared with July and slow to 14.9%: moderation arrives first in the islands and capitals

12/09/2026 – ⏱ 6 min · By Realty Investor Editorial Team

This article is for informational purposes only and does not, under any circumstances, constitute investment advice or a recommendation.

In recent quarters, the conversation about housing in Spain has almost always revolved around the same question: when will it slow down. The August 2026 figure from the Tinsa IMIE General and Large Markets index, compiled from appraisals carried out for mortgage purposes, adds a new nuance. The general index closed the month exactly level with July (a monthly change of 0%) and reduced its year-on-year rate to 14.9%. It is still a double-digit pace, well above inflation, but the profile of the movement is changing: the slowdown is no longer an isolated phenomenon in one specific group and is spreading to all the areas analysed. And it is doing so with a specific geography, which is probably the most relevant aspect of the report.

What the index measures and why it does not match other figures

It is worth placing the source before the number. The IMIE of Tinsa by Accumin is built from real appraisals carried out for mortgage purposes, that is, technical valuations of specific properties made at the moment a financed transaction is being processed. It does not measure asking prices published on portals or prices recorded in deeds before a notary. That methodological difference explains why several apparently contradictory figures coexist in the same month: the INE house price index put growth in the second quarter at 12.2%, property portals report different rates for second-hand housing, and notarial and registry statistics reflect transactions already completed, with a lag of weeks or months. None of these series is wrong; they measure different things. The appraisal series has the particularity that it arrives before the deed and after the listing, and that it focuses on the segment financed with a mortgage.

Zero per cent against July: the detail that changes the reading

The general index did not move in August compared with July. By group, the nominal monthly change ranged from -0.9% in ‘Islands’ to +0.2% in ‘Rest of municipalities’, a narrow band that describes a generalised stabilisation rather than a turn. It is a month of low activity and a single monthly figure should not be over-interpreted, but the contrast with the year-on-year rate is informative: a cumulative 14.9% over twelve months coexists with a flat month. In other words, most of the year-on-year price increase that the index reflects today took place in previous months, and the most recent momentum has faded.

Moderation begins where the purchase effort is greatest

The breakdown by group is the central point. ‘Mediterranean coast’ and ‘Metropolitan areas’ record the highest year-on-year rate, 17.4% each, compared with 10.2% in ‘Rest of municipalities’. ‘Capitals and large cities’ stands at 14.6% and ‘Islands’ at 14.8%. All groups remain above 10% in nominal terms, but the sharpest slowdown appears precisely in ‘Islands’ and in ‘Capitals and large cities’. The head of the Research Department at Tinsa by Accumin, Cristina Arias, points in the same direction, noting that, once inflation is discounted, the most marked slowdowns are seen in the islands and in capitals and large cities, areas where price levels and the purchase effort are highest. It is a sequence consistent with the logic of any income-constrained market: the brake appears first where prices had already exhausted the average buyer's ability to pay.

In real terms: between 12.6% and 5.7%

Spanish inflation closed August at 4.3% year on year, seven tenths of a point above July, driven mainly by energy. That means the nominal percentages have to be read with a discount. Once the CPI effect is removed, the year-on-year changes in the index move within a band of between 12.6% and 5.7% depending on the group. It is still a real increase in all cases (housing is appreciating faster than the cost of living), but the range is notably wider than in nominal terms, which indicates that the gap between the most and the least stressed areas is greater than the aggregate figure suggests.

The context: disposable income, rates and sales

The report is published in a financial environment that has changed direction in a few months. On 10 September the European Central Bank raised official rates by 25 basis points, putting the deposit facility at 2.50%, in its second rise of 2026, in response to euro area inflation that rebounded to 3.3% in August. Twelve-month Euribor, the benchmark for most variable-rate mortgages in Spain, has been above 3% since early September. And sales already reflect that adjustment: in July they fell 7.7% year on year, the largest decline so far this year. Tinsa stresses that sales in the first half have moderated because of the impact of inflation on household purchasing power, interest rates, geopolitical uncertainty and the greater difficulty of accessing housing, although the volume of transactions and mortgages remains above the historical average. The combination describes a market that is not coming to a halt, but in which the financing filter is starting to select buyers.

Why this matters to the real-estate investor

For those analysing transactions, an appraisal index provides something that asking prices do not: it is the benchmark the lender uses to size the loan. When the appraisal value rises, the same property supports a larger debt in absolute terms while the financing percentage is kept constant; when it stagnates, as in August, the available leverage stops growing even if the asking sale price keeps rising. That decoupling between what is asked and what is appraised is one of the variables that shape the capital structure of developments and, by extension, of crowdfunding projects backed by mortgage security: the appraisal value determines the loan's coverage margin relative to the asset, the so-called loan to value.

The geographical distribution adds a second reading. The fact that price pressure is now concentrated on the Mediterranean coast and in metropolitan areas, and is easing in the islands and large capitals, points to a shift in demand towards peri-urban rings and second-tier locations, where the entry price still allows purchases to go ahead. For the developer, that shift influences where it makes sense to start on land; for the lender, where the underlying asset retains room for absorption. Neither of these readings is a recommendation: they are relationships observed in the published data, not forecasts.

A reading for the investor

These figures call for the usual caution. This is an index built on mortgage appraisals, so it captures the segment of the market financed with credit and leaves out cash transactions, which in Spain account for a significant share of the total. August is also a month of reduced activity, with fewer valuations, which amplifies variability in the groups with lower volume. A flat monthly figure does not by itself establish a change of trend, just as a 14.9% year-on-year rate does not guarantee that the next figure will maintain that pace. Past results do not predict future ones, and all real-estate investment carries risks of illiquidity, default and total or partial loss of capital.

In a cycle of high prices, more expensive financing and falling transaction volumes, some private capital has in earlier phases explored routes to real estate exposure other than the direct purchase of a property, including regulated crowdfunding formulas. This is an observed dynamic, not a recommendation. At European level, the activity of crowdfunding platforms is governed by Regulation (EU) 2020/1503 and, in Spain, by the implementing legislation and CNMV supervision, which sets, among other obligations, pre-contractual information, the suitability assessment of non-sophisticated investors and the applicable investment limits.

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