A "free market" is not one number. The study splits it into four questions and answers each from a different part of the real-estate transaction register (ETN) and the other registers: do the parties set the price, do taxes shape the deals, does supply answer price, and who may buy. Data answers the first three; only the law answers the fourth.
The base is 622,630 sale contracts since 2007, lease contracts since 2013, and quarterly series of building, permits and prices.
Price
Do the parties set the price?
93.5%
of contracts are open-market sales
almost entirely free
Taxes
Do taxes shape the deals?
2.1×
as many resales in the month the capital-gains tax falls to nil
visibly: what is built and when it is sold
Quantity
Does supply answer price?
7.5×
building land against the farmland in the same kilometre
the most constrained, in place
Access
Who may buy?
—
the public ETN has neither buyer nor seller
not measurable from the data
Part one: price, taxes, quantity
The parties set the price
ETN tags every sale with a transaction type: open market, voluntary auction, forced sale (enforcement, bankruptcy), sale between family members or related parties, and leasing. The study reads those tags instead of guessing non-market deals from the price.
93.5% of contracts are open-market sales; forced sales are 2.3%. ETN holds not one sale in lieu of expropriation or expropriation (0): the state does not file those purchases as sales. Farmland is the most open-market segment at 96.4%; its pre-emption order does not show, because a pre-empted sale is still a sale. Commercial space is the exception at 81.8% open market: leasing carries 6.7% and auctions 4.9%. Pick a segment in the chart.
A contract's segment is its dearest item: house, flat, commercial space, another building part, then land by its largest parcel. Types 7 and 8 (sale in lieu of expropriation, expropriation) are never filed in ETN.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
Forced sales followed the crisis
Forced sales were 0.4% of contracts in 2009, peaked in 2015 at 4.3%, and have held at about 2% since 2019.
Two jumps in the chart are not the market. Related-party sales fall from 1.0% in 2023 to 0.1% in 2024, in every segment at once. Leasing is 4.9% and 7.7% of contracts in 2013 and 2014 and almost nil before and after. Both are changes in how deals are filed.
The open market is the rest up to 100%. Forced sales are in ETN from 2009. Related parties vanish from the filings in 2024 in every segment at once, and leasing appears only in 2013–2014: both are changes in filing, not in the market.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
The ratio of price to the GURS generalised value holds size and location roughly constant; each type's median is set against the open-market median in the same segment. Only contracts with a complete value, and types with 50+ contracts. Leasing is not shown, because its price includes interest.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
A rent set by law
From 2013 to 2024, 6.4% of filed dwelling leases carry a rent set by law, at a median €3.30/m² a month against €4.98 on the open market. All non-market types together are 10.8%.
That is a share of filings, not of rented dwellings. If private landlords file less often than public ones, it overstates. After 2024 filings fall fivefold, so the chart stops there.
A share of filings, not of the rental stock: if private landlords file less often than public ones, it overstates. After 2024 filings fall fivefold and come from others, so 2025–2026 are not shown. Rents: dwellings of 15–200 m².
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
Taxes decide when property is sold
A gain on selling real estate is taxed at 25% in the first five years, 20% to the tenth, 15% to the fifteenth and 0 after fifteen years (since December 2022; before that after twenty). If sellers wait for the lower rate, more should sell in the anniversary month than in the months around it.
They do. Among 40,897 consecutive open-market sales of the same flat or house, the month of the tenth anniversary holds 191 resales and the month before it 88. The excess is 1.16× at five years, 1.43× at ten and 2.13× at fifteen, against about 1.04× at other anniversaries. The tax decides when sales happen. The excess at four years (1.33×) is unexplained.
The other tax mark, developers designing new flats just under the reduced-VAT threshold, is shown in Who the market suits.
Two consecutive open-market sales of the same whole house or flat. The excess is the anniversary month against months ±2–6. The excess at four years is unexplained; no tax step falls there. ETN (from 2007) cannot yet see the 20-year step.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
Permission multiplies the price of land
What is it worth to be allowed to build on a plot? For every farmland sale the comparison is the median price of building land sold within 1 km and within two years either side.
Building land sells for 7.5 times the farmland beside it (n = 25,103, interquartile range 3.0–16.1×), a median gap of €16.8/m². Against forest the ratio is 18.1× (n = 4,711). It is flat over time: 6.6× in 2007–10, 7.0× in 2023–26.
The ratio is a lower bound: farmland next to a settlement already carries the hope of being built on one day, and it is dearer where dwellings are dear. So it peaks in Ljubljana's hinterland, not in the cities: Trzin 25×, Log-Dragomer 22×, Brezovica 20×, Vrhnika 19×, against Ljubljana 7×, Koper 7× and Kranj 7×.
Single-parcel, land-only, open-market sales; the price divided by the share sold. The land kind is the seller's statement. Comparison: the median €/m² of at least three building-land sales within 1 km and ±2 years. Farmland next to a settlement is already dearer than remote farmland, so the ratio is a lower bound on what permission is worth.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
Where permission is worth most
The median ratio of the price of building land to the price of farmland in the same kilometre, by municipality. Switch to the price of building land or of farmland.
Where prices rose, building did not follow
In the 101 municipalities with enough sales in both windows, the median price over the same generalised value rose 86% from 2013–15 to 2023–25. Dwellings built 2015–2025 are only 5% of the 2014 stock.
Across municipalities the two are unrelated (correlation −0.14). Where prices rose most (Mislinja, Bovec, Litija, Jesenice, Kamnik: by 112%–121%), the stock grew a few per cent. Where most was built (Rače-Fram 18.5%, Benedikt, Hrpelje-Kozina), prices rose less than the median. The market sets prices freely and taxes leave visible marks, but quantity barely answers price.
Municipalities with 20+ clean dwelling sales in both windows. Price growth is the growth of the median price over GURS value, which holds the mix of sales roughly constant. Circle size is the 2014 stock. Buildings completed in 2025 are only partly in the register.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
Part two: quantity over the cycle
Supply follows the cycle
Part one compares municipalities over a decade. Part two asks quarter by quarter: when the cycle turns, do permits, construction, completions and the number of sales move? And if the response stops somewhere, is it at the permit or after it?
The chart shows levels, 2007 = 100. From 2015 to 2025 prices rose 115%, permits 65% and completions 75%. In 2025 completions are 53% of 2007, the peak of the previous boom. Pick a series.
Annual means, years with four quarters only. Permits: dwellings in residential buildings (Eurostat). Completions: by year built in today's building register, so demolished ones are missing; the 2019 dip is probably a register artefact. New-build sales: in the year built or the next; they are few, so they swing hard.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
Down fast, up slowly
In the bust, from 2007 to 2014, prices fell 18%, permits 74% and completions 67%. Supply fell four times as hard as price. For each 1% fall in price completions fell 5.6%; for each 1% rise in the boom they rose only 0.7%.
The study does not separate the causes of the collapse: prices fell, builders went bankrupt and credit dried up at once.
Bust 2007–2014, boom 2015–2025 (the last full year). In the bust prices fell, builders went bankrupt and credit dried up at once; the causes are not separated.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
Building moves with price, sales do not
Permits and construction move with price growth in the same quarter (r = 0.40, interval 0.24–0.57, and 0.47), but swing far harder: annual permit growth has a standard deviation of 22%, price 6.7%. Permits peak two quarters before price and construction two quarters after it: permit, price, build.
Completions follow permits (their annual growth agrees at r = 0.58 within the same year), so nothing suggests a bottleneck in construction after the permit. The number of flat and house sales does not move with price in the same quarter (r = −0.03 and −0.18). Pick a quantity.
Correlation of annual log growth rates. 90% interval, block bootstrap with 8-quarter blocks. The strongest lag is picked from 17 and so overstates on its own. ETN's last quarter may be incomplete.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
Rates move the number of sales, not prices
When the mortgage rate rises, fewer houses and flats sell a quarter or two later: r = −0.72 for houses and −0.59 for flats. None of 50 random shifts of the rate series by three years or more gives a link that strong (p = 0).
The link is real, but leans heavily on 2009–2010, when the ECB's cuts and the rebound in sales coincided. Without those years it is −0.43 for houses and −0.28 for flats; in 2017–2026 −0.51 and −0.24. Prices do not fall with rates; they rise with them (What moves house prices). Higher rates cut the number of deals and leave the price alone.
All three curves in standard deviations. The rate is its four-quarter change, inverted and shifted by the strongest lag. The link leans heavily on 2009–2010, when the ECB's cuts and the rebound of sales coincided. Correlation is not a cause.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
In time yes, in place no
In the same 101 municipalities, dwellings completed per 1,000 existing ones (2015–2025) are unrelated to price growth (Spearman −0.05). Building permits per 1,000 dwellings are even negatively related to it (−0.38), because they count every building, farm and ancillary ones included, and so read high in the countryside. Permits do agree with completions (0.51). Pick a measure.
Permits from the building-permit register (complete from 2015) count every building, farm and ancillary ones included, so rural municipalities read high. Circle size is the 2014 stock. The same municipalities as the stock chart.
Source: ETN (GURS), building register, SURS, Eurostat, ECB · bloki.si
Who may buy: what the data cannot see
Who buys. GURS collects the parties' legal form, position and citizenship on every contract, but the public ETN extract carries no party file. In the ownership register every private owner hides behind the same marker. Reciprocity for non-EU buyers under Article 68 of the Constitution is therefore law here, not a measurement.
Pre-emption. Whether it was exercised is not a field in ETN. 27 legal notes across 622,630 contracts mention a pre-emption right: an anecdote, not a rate.
Credit. The Bank of Slovenia has capped loan-to-value and debt-service-to-income since November 2019. There is no mortgage data, and the start coincides with covid.
Fees. A broker's fee is capped at 4% of the price. ETN records only whether an agency took part (26% of flat sales where the field is filled), not the fee.
So how free is the market
Price is free: more than nine in ten contracts are open-market sales, and the non-market tags mark deals that really fetch less. Taxes leave marks on what is built and when it is sold. Quantity is constrained, but in place, not in time: supply answers the cycle, harder than price does, but it does not move to where prices rose. The bottleneck is probably land and location, as the 7.5-fold premium for buildable land suggests, rather than the construction pipeline. Rates change the number of deals, not prices. The wait for a building permit by administrative unit is in Who the market suits; there too, a slow office does not build fewer homes.
§ How it is computed
Transaction type is ETN's code list of sale and lease types, on every contract. A contract's segment is its dearest item. Non-market sale prices are medians of price over the GURS generalised value, set against the open market in the same segment.
Anniversaries. Two consecutive open-market sales of the same whole unit; the excess is the resales in the anniversary month divided by the mean of the months two to six before and after it.
The premium. Single-parcel, land-only sales, the price divided by the share sold; for each farmland sale the median of at least three building-land sales within 1 km and two years. The land kind is the seller's statement.
Supply by municipality. Growth of the median price over generalised value between 2013–15 and 2023–25, in municipalities with at least twenty clean sales in both windows; new dwellings by year built in the building register.
The cycle. The SURS price index, permits and building construction from Eurostat, contract counts from ETN, completions from the building register, the ECB mortgage rate. Annual log growth; the rate as a four-quarter change. Intervals from a bootstrap with blocks of eight quarters. The permit register is complete from 2015.
What this cannot tell. Who buys, whether a pre-emption right was exercised, how much credit there was and what the fee was: the public data has none of these fields.
Can the Bloki server answer questions like these?
The server holds the same ETN contracts, the building register, designated land use and building permits. Nobody holds the parties to a contract, so no tool can name a buyer.
- Yes
How often does property sell and let in my municipality?
Sales and lettings per 1,000 building parts a year, dwellings and business premises apart, with n.
market_activity - Yes
Was this flat's rent set by law?
Every letting carries its lease type; a rent set by law is marked and not used as a comparable.
property_history - Partly
Was this sale forced, or within a family?
Every sale is listed, but the transaction type is not yet a field of its own; the server says only whether a sale is comparable and why not.
property_history - Yes
Is this plot building land, and what was permitted around it?
The plot's designated use, a search for unbuilt building land, and building permits on the plot and nearby since 2015.
property_landfind_parcelsbuilding_permits - No
Who bought it: a foreigner, a company, the state?
ETN has no party to the deal, and private owners hide behind one marker. It is one of the refusals the server states itself.
data_limitations