Listing Counts: Why They Are Not the Market

What does a listing count on Italian portals measure?#

A listing count on an Italian portal measures advertised stock, and nothing else. It is the number of live advertisements on a given day. It does not measure demand, it does not measure how fast homes leave the market, and it does not measure what buyers paid. For Lake Como, as for the rest of Italy, the figure at the top of the page answers a question the principal did not ask.

The definition matters because three quantities move independently. Stock exposed is the set of properties advertised at a point in time. Absorption is the share of that stock, or of newly built units, that finds a buyer over a stated period. Transacted volume is the count of deeds actually signed. A portal can show a rising stock while absorption holds steady, and it can show a falling stock because mandates lapse, which says nothing about sales.

Italy publishes the transacted side as an official statistic. The Agenzia delle Entrate, through its Osservatorio del Mercato Immobiliare (OMI), reports NTN, the numero di transazioni normalizzate, which counts each dwelling sold weighted by the share of ownership transferred, so that a half share counts as 0.5. It is built from administrative archives of the land registry, the property register and the registry of deeds. It is measured, not estimated, and it is the anchor for everything that follows.

The portal count, by contrast, has no public audit. The research for this article found no Italian authority that publishes a deduplicated national or lake-district count of advertisements, and no portal operator that discloses one. This article therefore treats every advertisement count as an unaudited exposure indicator, and builds the market reading from published transaction, survey and development statistics, each with its grade.

Why does one Lake Como property appear on several portals?#

The same property appears on several portals because several agents, and several portal networks, may each advertise it. A seller who has not signed an exclusive mandate can instruct more than one agency, and each agency publishes on its own set of portals. The result is one property and many advertisements, each with its own photographs and, often, its own asking price.

Network distribution adds a second layer of repetition. Milano Finanza reported in April 2026 that Immobiliare.it had reached an agreement with Subito, so that partner agencies and builders can publish there in addition to a network that already includes Trovacasa.it, MioAffitto.it and LuxuryEstate.com. The report states that the agreement covers nine regions, Lombardy among them, so one entry can surface under several brands. The report does not quantify the effect on counts.

The size of the duplication is unknown for Italy, and any reading of the count should say so. The only quantified duplicate share found in the research for this article comes from Canada, where the Canadian Real Estate Association stated that duplicate listings represented less than 0.8 per cent of all residential listings on REALTOR.ca, a statement reproduced in February 2014. That is a self-reported, directional figure from a market with a shared listing system. Italy has no equivalent shared system, so the number should not be transposed.

Lake Como is a place where duplication is plausibly material. Lakefront villas are few, high in price and typically marketed through several agencies in more than one language. When the number of distinct addresses is small, each repeat distorts the count more. This is a structural reading, graded directional, and not a measured Lake Como share. In London in 2016, the property search firm Propcision argued that agents relisting the same homes skew house price indices and research; Rightmove and Zoopla responded that they act against agents who manipulate listings.

The practical rule is to count addresses, not advertisements. For any micro-market under study, the stock is rebuilt by matching cadastral reference, area, floor and photographs across portals, and then removing advertisements that have stayed live far longer than the typical sale time. The residue is the stock exposed. Everything above it is noise, and it is the noise that sits at the top of the page.

How does stock exposed differ from absorption and from closed sales in Italy?#

Stock exposed answers what is for sale, absorption answers how fast it leaves, and closed sales answer how many deeds were signed. Only the second and the third tell the principal about the market. A large stock with fast absorption describes a liquid market. The same stock with slow absorption describes an illiquid one. The raw count cannot separate the two, and the principal who reads it alone cannot tell which market is in front of them.

Months of supply combines stock exposed and closed sales into one reading. It is the stock exposed divided by the monthly rate of closed sales. The logic is the one used in queueing analysis, where the time spent in a system equals the number inside it divided by the rate of departures. The ratio assumes a stable stock and a stable pace of sales, and neither holds in a market that changes from one quarter to the next.

Each input carries its own grade. The numerator, the deduplicated stock, is the weakest, because it depends on the principal's own matching work. The denominator, closed sales, is the strongest where official data exist, because OMI builds NTN from registry deeds. The ratio inherits the quality of its weakest input, and the output should be reported as directional and never as a measurement.

Italy adds a further distinction, the intensity of the market. OMI also defines the IMI, the intensità del mercato immobiliare, as NTN expressed as a share of the stock of property units. It tells the principal what proportion of the units in a province change hands in a year, which is a cleaner turnover measure than any portal count. OMI puts the national IMI at 2.20 per cent in 2025 (Rapporto Immobiliare 2026, p. 5); provincial values sit in the Agenzia's regional releases, and this article did not retrieve the figure for the province of Como.

Absorption has a second meaning for new construction. For a developer, absorption is the share of newly built units sold within a given time of completion. The OMI development study discussed below measures exactly that, and it is the closest public analogue to the question that a builder faces. It is also the one measure on this list that a listing count cannot approximate at all.

How many homes change hands in Italy, and how fast is that pace moving?#

Italy recorded almost 767,000 residential transactions in 2025, up 6.4 per cent on 2024. The figure is OMI's NTN, measured from administrative archives and published in the Rapporto Immobiliare 2026 on 21 May 2026. It follows a rise of 1.4 per cent in 2024 and a fall of 9.5 per cent in 2023. The 2025 index level, 94.9 on a base of 100 in 2004, is still below the 97.2 recorded for 2022, so the recovery is partial.

The recovery is uneven by geography. The north-west rose 8.0 per cent in 2025 and the north-east 6.4 per cent, while municipalities that are not provincial capitals rose 6.9 per cent against 5.4 per cent for the capitals. Lombardy sits in the north-west, the fastest-growing macro-area in the report, but the table does not isolate Lake Como, and a macro-area average says little about a lake municipality with its own buyers.

The pace flattened in the second quarter of 2026. Idealista News, summarising the OMI second-quarter release on 10 September 2026, reports more than 201,000 normalised residential transactions between April and June 2026, a rise of 0.1 per cent on a year earlier. The figure is measured, and OMI's own note for the quarter gives the exact count, 201,596.

Prices kept rising while volumes stayed below their 2022 level. OMI's price index, which uses the ISTAT house price series from the second half of 2010, rose about 4 per cent in 2025 and 3.2 per cent in 2024, while 2025 transactions remained below their 2022 level. That combination is a pattern that a portal count cannot reveal, because asking prices on live advertisements are not transaction prices.

Turnover against the stock puts the figure in proportion. The ISTAT permanent census counted 35,271,829 dwellings in 2021, of which 27.2 per cent were unoccupied or occupied only by non-residents. OMI's own turnover measure, the IMI, puts 2025 transactions at 2.20 per cent of the housing stock nationally, up 0.13 points on 2024, a measured figure that makes any cross-source arithmetic unnecessary.

How long does a sale take in Italy according to public data?#

Italian agents reported 5.2 months from mandate to sale in the second quarter of 2026. The Banca d'Italia survey, published on 12 August 2026 with Tecnoborsa and the Agenzia delle Entrate, polled about 1,500 real estate agencies between 18 June and 21 July 2026. The average discount on the initial asking price was 7.1 per cent. Both readings are measured, from an official survey with a stated sample, and the Bank describes them as close to the lowest since the series began.

The definition of the clock is the point. The Bank's series runs from the day the seller assigns the mandate to the day of sale. Immobiliare.it Insights measures something else, the average time a listing stays on its own portal, and reported 5.5 months nationally in 2026 against 5.2 a year earlier, with Milan just under three months and Como at 4.1 months, according to Affaritaliani's report of the release on 5 July 2026. A principal who mixes the two series is comparing two different clocks, and the gap between them is not a market signal.

Both clocks suffer from survivorship. A sale enters the average only when it closes. An advertisement withdrawn because the seller gave up, or because the mandate expired, leaves no trace in the time-to-sell figure and also vanishes from the portal's stock. The statistic describes the properties that sold, and it is silent on the properties that were offered and never found a buyer.

The discount is the companion number, and it varies by region. The Bank reports 7.1 per cent nationally in the second quarter of 2026, against 7.8 per cent a year earlier, with 5 per cent in the north-east and 9 per cent in the south and islands. The survey publishes no figure for Lake Como. A principal who underwrites exit values on asking prices without a stated discount is relying on a number that nobody has measured locally.

The sample covers agency-intermediated sales. The Bank states that 85.7 per cent of agencies closed at least one sale in the quarter, that 63.1 per cent of purchases were financed with a mortgage, and that the loan-to-value ratio was 78.2 per cent. Private sales without an agency fall outside the survey, and it cannot say how a lake-district segment with many foreign buyers behaves. The reading is a national anchor and nothing more.

How can a principal estimate time to sell for Lake Como from public data?#

The estimate is built in three steps, and two of them rest on public data. The first step is a deduplicated count of addresses for sale in the target micro-market, which is manual work. The second is the number of closed sales in the same area and property type over twelve months. The third is the ratio of the two, adjusted by the discount and read against the survey clock. Each step should be written down with its grade.

The national numbers show how the arithmetic behaves. About 767,000 transactions a year is roughly 64,000 a month. If the Bank's 5.2 months is the typical time in the market, the implied stock on sale at any moment is about 330,000 dwellings. That is Victaura Research arithmetic using a flow rate and a duration, graded directional, because the Bank's clock covers agency sales while NTN covers all deeds.

No national portal total was verified against that implied stock. The comparison would be informative, since a portal count several times larger than the implied figure would reveal duplicates and stale entries. This article does not state any portal total, because none was found from a primary or auditable source. The method is offered as a test the principal can run, with their own data.

For a lake-district market the same method produces a range, not a point. The principal should run it with the Bank's 5.2 months, with the portal clock of 5.5 months, and with a longer stress case for prime property, since the public clocks are national and prime assets trade thinly. The spread between the cases is itself information, because it shows how much of the decision rests on an assumption.

Mandate flow is an early signal of agency supply. The Bank's balance of new mandates to sell stood at minus 25.9 points in the second quarter of 2026, and the balance for mandates still to be fulfilled at minus 26.2, which means that more agents see fewer mandates than see more. Supply is shrinking in agency books while the balance for potential buyers, at minus 15 points, also signals weak demand. Both readings are survey balances, not counts.

What does the OMI development study say about absorption of new units in Lombardy?#

OMI's 2026 report contains the closest public measure of what a builder needs to know. Chapter 7 presents the MAOSI project, which reconstructs residential development operations from deeds, permits and cadastral records. It reports sales as a share of units one, two and three years after the cadastral entry that follows the end of works. OMI states that these data do not yet have systematic periodicity or full statistical representativeness, and the grade here follows that warning.

Lombardy's sample shows 85.3 per cent sold after year one, 91.3 per cent after year two and 93.7 per cent after year three. The sample is 80 developments in municipalities around Milan, including Cologno Monzese, Cinisello Balsamo, Rho, Sesto San Giovanni and San Giuliano Milanese. It is not Lake Como. OMI describes national values at about 75 per cent after the first year, almost 85 per cent after the second and about 90 per cent after the third, with Lombardy and Piedmont stronger.

The same table shows how long the build takes. Lombardy developments averaged 17.3 months from land purchase to the first building permit, 20.8 months to the start of works and 34.7 months of works. That is about 55 months from land purchase to completion, before the study's sales clock starts. In the sample, 85.0 per cent of developments were financed, with an average debt share of 58.3 per cent, and the land averaged 18.4 per cent of revenue.

The averages hide an exclusion. OMI notes that Milan showed intervals between land purchase and works above sixty years, which are meaningless for estimation. For the Lombardy timings it therefore averaged only the 69 of 80 developments with intervals of eleven years or less. A sample that needed trimming is a sample to read with care, and the percentages here are a benchmark for method, not a forecast for a lake municipality.

What numbers would decide whether to build on Lake Como?#

Five numbers would carry the decision, and none of them is the listing count. They are the deduplicated stock in the micro-market, closed sales per year, the discount from asking to closing, the absorption curve of new units, and the length of the build cycle. Four have a public benchmark in this article, and the deduplicated stock has none. All five need a local value that the principal must source before committing capital.

The build cycle matters more than the entry reading. On the OMI Lombardy sample, about 55 months pass from land purchase to completion, of which about 35 are works. The second quarter of 2026 is therefore a poor guide to the market in which the units will be sold. The agents' expectations balance for the national market in the Bank's survey stood at minus 15 points for the current quarter and minus 10 points over the next two years, which are opinions and not forecasts.

Local pricing evidence should come from a third party and carry a date. Engel & Völkers' Lake Como market page, read on 9 October 2026, puts prime new and renovated property at about 5,000 to 7,000 euros per square metre, with top prices at 7,500, and reports that central areas gained value over the past year. This is a broker-reported range, not a transaction record, and the broker has a commercial interest in the segment it describes.

The financing structure sets the cost of waiting. In the OMI Lombardy sample, 85.0 per cent of developments carried debt averaging 58.3 per cent of the capital employed, so in a financed scheme each extra month of sale time adds interest on the debt still outstanding. On the exit side, 63.1 per cent of agency-intermediated purchases in the Bank's survey were financed with a mortgage, and access to credit was described as accommodative in the second quarter of 2026.

Scale changes the absorption question. A scheme of two villas, such as the one on the public project page for Two Villas on Lake Como, sells to a handful of buyers and not to a market. For a scheme of that size, the portal count matters even less, because a single closed sale moves absorption by half. The relevant evidence becomes the buyers who are actually in the market.

What are the weaknesses of this reading, honestly disclosed?#

No Como-level transaction figure was retrieved. The OMI regional statistics for Lombardy, which carry provincial focus pieces, were not located in the research for this article, so NTN and IMI for the province of Como are absent. Every national figure here is a context figure, and none is a Lake Como measurement. A reader who needs the local denominator must obtain it from the Agenzia's OMI regional statistics for Lombardy.

The survey clock covers agency sales in national and macro-area terms. The Banca d'Italia sample of about 1,500 agencies reports national and macro-area values. Lake Como sits inside the north-west, where price judgments cooled to a balance of 1 point in the second quarter of 2026, against 7 nationally. The same survey reports that agents' judgments of sales against a year earlier worsened most in the north-west and the north-east. Both are regional judgments by agents, and neither is a reading of a lake market.

The portal clock measures something narrower than a sale. Immobiliare.it counts time online on its own platform. The press page itself could not be opened during verification, so the figures, including 4.1 months for Como, were read through Affaritaliani's report of the release, and the Como value is a portal figure for the area and not a measure of the lakefront segment. The grade is therefore directional, press-reported, until the release itself can be read.

The duplicate share is unquantified for Italy. The Canadian figure is the only quantified share found, it is graded directional, and it does not transfer to Italy. The 2016 London claim came from a property search firm with a commercial interest in the issue, and no independent audit of it was found. A reader should treat the existence of duplication as established by mechanism and its size as unknown.

The development sample is a Milan-belt sample. The MAOSI authors say the data lack systematic periodicity and full representativeness, and Lombardy's sample is built on municipalities adjoining Milan, an urban belt with buyers unlike those of a lake municipality. Lombardy is also among the strongest regions in the table, so the percentages are a favourable benchmark.

The author is not neutral. The disclosure at the end of this article states Victaura's positions, and a thesis that is sceptical of portal counts can suit a developer. The principal should check the arithmetic against the cited documents, not against this commentary, and should treat every calculation labelled Victaura Research as the author's own.

What should the principal take from the listing count on Lake Como?#

The listing count is an input to a ratio, never the answer. Read alone, it overstates stock where advertisements repeat, and it understates difficulty where unsold properties are quietly withdrawn. Read against closed sales and a defined clock, it becomes one of three numbers that describe liquidity. The other two, closed sales and time to sell, have public sources.

The public benchmarks are narrow but usable. About 767,000 transactions in 2025, 5.2 months from mandate to sale, a 7.1 per cent average discount from asking and a Lombardy new-build absorption of 85.3 per cent after one year are all dated, sourced and graded in this article. None is a Lake Como figure, and each should be replaced by a local value before capital is committed.

The remaining work is local and mostly manual. It consists of deduplicating the stock, extracting provincial and municipal transactions from OMI and notarial sources, and observing the gap between asking and closing prices in comparable sales. Readers can consult Victaura's approach page, which is the place for the framing and not for any figure in this article.

As of 9 October 2026, the data cited here run to the second quarter of 2026. The next Banca d'Italia survey and the next OMI quarterly release will update the clocks, and the Agenzia's regional statistics, announced for publication from 5 June 2026, hold the provincial figures that this article did not retrieve. The principal should re-run the ratio when new data appear.

Skin in the game disclosure. Victaura, through its parent Greystone B.V. (Netherlands), develops projects on Lake Como (Italy), in Nungwi, Zanzibar (Tanzania), on Gili Air and in Uluwatu, Bali (Indonesia), and holds an off-plan capital position on Al Marjan Island, Ras Al Khaimah (UAE). Readers should assume commentary may be influenced by, or benefit, these positions. This document is classified as marketing material under MiFID II Article 24(3). It is not investment advice.