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УкраїнськаFlat and property prices Konstancin-Jeziorna 2026
The median flat price in Konstancin-Jeziorna is PLN 12,908 per m² (transactions from the 12 months until July 2026, 139 notarial deeds). This is 39% above the median in Poland (PLN 9,270/m²).
All figures on this page: transactions from August 2025 to July 2026 (part of this period predates the availability of complete county data), changes compared with: ; floor area applies to the tiles at the top, charts, yearly tables, districts, streets and the transaction list (the rooms table includes all floor areas).
Urban-rural municipality (gmina), Mazowieckie Voivodeship voivodeship. Data for until July 2026 (the county office submits deeds with a delay). How we calculate.
Compare property prices: Konstancin-Jeziorna and another locality
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How flat prices in Konstancin-Jeziorna are changing: month by month
There are too few transactions in the selected floor-area range to plot a reliable trend.
| Year | Median PLN/m² | Transactions |
|---|---|---|
| 2024 | 11,958 | 85 |
| 2025 | 13,165 | 137 |
| 2026 (until July 2026) | 13,052 | 66 |
How much does a studio flat cost, and how much are 2- and 3-room flats in Konstancin-Jeziorna
| Type | Median PLN/m² | Typical price | Transactions |
|---|---|---|---|
| Primary market (from a developer) | 13,298 | PLN 1,602,347 | 62 |
| Secondary market (resale) | 12,505 | PLN 700,000 | 77 |
| studio flat (1 room) | - | - | 4 |
| 2-room flat · typically 42 m² | 13,827 | PLN 545,000 | 13 |
| 3-room flat · typically 50 m² | 12,872 | PLN 690,000 | 27 |
| flat with 4 or more rooms · typically 116 m² | 12,907 | PLN 1,485,000 | 94 |
Transactions from August 2025 to July 2026. The median is shown only where there were at least 10 transactions. Some deeds do not specify the market type, so the total may be lower than the number of all transactions.
Flat prices on your street
Transactions from August 2025 to July 2026. Streets with at least 5 transactions in this period; you can change the period and floor area at the top of the page. Enter a street name to find it. Click a street row to see all transactions here, with dates, building numbers and prices, or click the street name to go to its page.
| Street | Median PLN/m² | Typical price | Transactions | Latest transaction |
|---|---|---|---|---|
| Daliowa | 14,085 | PLN 1,574,462 | 26 | 2026-02 |
| Bielawska | 13,105 | PLN 750,000 | 14 | 2026-06 |
| Kołobrzeska | 13,809 | PLN 878,500 | 9 | 2026-05 |
| Jabłoniowa | 8,319 | PLN 1,224,500 | 8 | 2026-04 |
| Olechowska | 14,048 | PLN 3,090,000 | 7 | 2026-02 |
| Warszawska | 14,474 | PLN 794,500 | 6 | 2026-07 |
| Wilanowska | 11,357 | PLN 462,000 | 6 | 2026-04 |
| Mirkowska | 20,588 | PLN 1,330,000 | 6 | 2026-06 |
| Plac Zgody | 11,752 | PLN 450,000 | 5 | 2026-06 |
| Sadowa | 19,212 | PLN 2,220,000 | 5 | 2025-12 |
| Anny Walentynowicz | 9,733 | PLN 505,000 | 5 | 2026-07 |
This street is not on the list: too few flats were sold there during the selected period, or the county office does not provide addresses. Select it from the suggestions above to see individual transactions.
| Deed date | No. | m² | Rooms | Floor | Market | Price | PLN/m² |
|---|
Comments on these data or objection (Article 21 GDPR) (how we process these data).
Source: the Property Price Register (RCN, Polish official register of real-estate transactions), maintained by county heads and city mayors, and, for Łódź, Wrocław and Warsaw, also services and data files provided by these cities, made available by the Head Office of Geodesy and Cartography (RCN WFS service). Compiled using materials from the national geodetic and cartographic resource (Article 40c(3) of the Geodetic and Cartographic Law). We have removed notarial deed numbers, notaries' details, transaction parties and unit numbers; the authorities maintaining the register are not responsible for this compilation. You can change the period at the top of the page; the widest period (from 01.2022) shows all years available in the register here.
What is not here: the register covers only deeds transferring separate ownership of a unit. It does not include sales of cooperative ownership rights to a flat (common in housing cooperative blocks), assignments of developer agreements made before the unit was legally separated, or deeds not yet entered by the county or city office.
The true cost of buying a flat in Konstancin-Jeziorna
For a typical 2-bedroom flat costing PLN 545,000, you also need to budget for:
| 2% tax on civil-law transactions (secondary market only; first-time flat buyers may be exempt) | PLN 10,900 |
| Notary's fee, maximum rate (plus 23% VAT, certified copies and the land and mortgage register entry; in practice it may be lower) | up to PLN 2,950 |
| Flat renovation (PLN/m² of flat (complete renovation, including materials)) | 2,300 PLN/m² |
| Turnkey flat finishing (PLN/m² (turnkey finish, design, package catalogue materials and labour)) | 3,000 PLN/m² |
| Moving service (PLN per hour of work (vehicle + two-person team)) | 200 PLN/h |
| Energy performance certificate (PLN for a flat's energy performance certificate) | 250 PLN |
| Property valuation report (PLN for a property valuation report (flat)) | 900 PLN/valuation report |
| Bespoke kitchen (PLN per linear metre (lm) of bespoke kitchen cabinets, basic option (laminate)) | 3,250 PLN/linear metre |
| Post-renovation cleaning (PLN/m² (post-renovation cleaning)) | 20 PLN/m² |
Tax and notarial fees calculated from the applicable regulations for the specified price, as an estimate. Services: medians from price lists across Poland; service prices in Konstancin-Jeziorna.
Houses, plots of land, garages and commercial premises in Konstancin-Jeziorna
| Type | Median here | Voivodeship | Poland | Transactions (24 months) |
|---|---|---|---|---|
| Houses with a plot of land | 1,870,000 PLN | 540,000 | 620,000 | 25 from May 2024 to April 2026 |
| Building plots | 424 PLN/m² | 160 | 130 | 76 from February 2024 to January 2026 |
Property Price Register, entire municipality, open market. We show property types with at least 15 transactions over 24 months.
Questions about flat prices in Konstancin-Jeziorna
How much does a flat cost in Konstancin-Jeziorna?
A typical flat in Konstancin-Jeziorna costs PLN 1,245,000 (median from 139 transactions over the 12-month period until July 2026, typical floor area 110 m²). 2 rooms: PLN 545,000. 3 rooms: PLN 690,000. 4 rooms or more: PLN 1,485,000.
How much does a square metre of a flat cost in Konstancin-Jeziorna?
The median flat price in Konstancin-Jeziorna is PLN 12,908 per m² (transactions from the 12 months until July 2026, 139 notarial deeds). Half of transactions were between PLN 10,540/m² and PLN 14,541/m². A typical flat had a floor area of 110 m² and cost PLN 1,245,000.
Is a new-build flat in Konstancin-Jeziorna more expensive than a resale flat?
On the primary market (new builds), the median was PLN 13,298/m² (62 transactions), while on the secondary market (resale) it was PLN 12,505/m² (77 transactions), meaning new flats were more expensive by 6%.
Where do these prices come from?
From the Property Price Register maintained by county authorities and made available by the Head Office of Geodesy and Cartography. These are prices from notarial deeds, meaning the amounts for which flats were actually sold, rather than asking prices.