STREFA.57 KOSTROGAJ
Bielska, Płock, woj. mazowieckie
Flats for sale
92 flats from the developer's price list
- 2 rm · 42,5 m² · ground floor399 030 złinstalment ~2037 zł/mo9400 zł/m² · B1_27price ↑3%−9% vs similarAsk
- 5 rm · 78,8 m² · floor 2748 885 złinstalment ~3824 zł/mo9500 zł/m² · A1_31price ↑6%Ask
- 5 rm · 78,8 m² · floor 3748 885 złinstalment ~3824 zł/mo9500 zł/m² · A1_35price ↑3%Ask
- 2 rm · 42,5 m² · floor 1403 275 złinstalment ~2059 zł/mo9500 zł/m² · B1_32price ↑6%−8% vs similarAsk
- 2 rm · 42,5 m² · floor 2407 520 złinstalment ~2081 zł/mo9600 zł/m² · B1_37price ↑6%−7% vs similarAsk
| No. | Area | Rooms | Floor | Price | zł/m² | Instalment from | Enquiry |
|---|---|---|---|---|---|---|---|
| B1_27 | 42,5 m² | 2 | ground floor | 399 030 zł | 9400price ↑3%−9% vs similar | ~2037 zł | Ask |
| A1_31 | 78,8 m² | 5 | 2 | 748 885 zł | 9500price ↑6% | ~3824 zł | Ask |
| A1_35 | 78,8 m² | 5 | 3 | 748 885 zł | 9500price ↑3% | ~3824 zł | Ask |
| B1_32 | 42,5 m² | 2 | 1 | 403 275 zł | 9500price ↑6%−8% vs similar | ~2059 zł | Ask |
| B1_37 | 42,5 m² | 2 | 2 | 407 520 zł | 9600price ↑6%−7% vs similar | ~2081 zł | Ask |

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Location
Moderate commute time to the centre.
Moderate commute time to the centre.
Shops, pharmacies and services right nearby.
Shops, pharmacies and services right nearby.
Schools and kindergartens within easy reach.
Schools and kindergartens within easy reach.
Some greenery, audible street noise.
Some greenery, audible street noise.
Red flags
- Close to a busy street - elevated noise.
- Płock995 m
- Obr. Westerplatte144 m322110111+1
- Żwirki i Wigury192 m18
Nearby infrastructure
- Aldi202 m
- Dino219 m
- Top Market268 m
- Diabetyka160 m
- Lawenda382 m
- Eskulap436 m
- Skwer imienia Romana Lutyńskiego320 m
- Miejskie Przedszkole nr 29 "Przedszkole Marzeń"475 m
- Miejskie Przedszkole nr 11 w Płocku571 m
- Żłobek Miejski nr 3590 m
- Xtreme Fittness Gyms377 m
Primary schools nearby
by 8th-grade examSurroundings
Who is this location for?
- People who value shops and services within walking distance.
- Families who care about schools and kindergartens nearby.
- People sensitive to noise and seeking quiet and greenery.
- Investors expecting a premium location for short-term rental.
Price against the market
Price movement
In the last 90 days the developer raised the price of 89 units · lowered the price of 1 unit(avg +4,1%)6 developments within 1,5 km, median 10 600 zł/m². This investment: −1,7% vs neighbours.
Developer and information prospectus
- Full legal name
- ŻD PŁOCK BIELSKA 1 SP. Z O.O.
- KRS
- 0001183434
- Registered
- 2025
- Share capital
- 5000 zł
- Owner
- ŻERAŃSKI SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
- Phone
- +48 534 000 726
- Development page
- open on developer's site ↗
- Developer website
- zeranskidevelopment.pl/inwestycja/strefa-57-kostrogaj
Company registered in 2025 - a common pattern: a special-purpose vehicle set up for this project. A KRS fact, not a judgement.
- Completed projects listed in the prospectus
- 2
Listings in this development
2 apartments for sale. Click to see the analysis.
Nearby developments
About the development
STREFA.57 KOSTROGAJ is a development by ŻD PŁOCK BIELSKA 1 SP. Z O.O. in Płock. The asking-price register lists 92 residential units with a price: 4 1-room units, 58 2-room units, 24 3-room units, 4 4-room units, 2 5-room units. Prices start at 301 440 zł, with a median of 10 425 zł/m². Difference against 6 nearby developments within 1,5 km: −1,7%.
Prices of 1-, 2-, 3-, 4- and 5-room flats in STREFA.57 KOSTROGAJ
| Rooms | Units | Area | Price from | Median |
|---|---|---|---|---|
| 1 room | 4 | 25,1 m² | 301 440 zł | 12 150 zł/m² |
| 2 rooms | 58 | 32,3–50,6 m² | 332 690 zł | 10 325 zł/m² |
| 3 rooms | 24 | 47,3–54,4 m² | 496 335 zł | 10 500 zł/m² |
| 4 rooms | 4 | 66 m² | 643 403 zł | 9900 zł/m² |
| 5 rooms | 2 | 78,8 m² | 748 885 zł | 9500 zł/m² |
Frequently asked questions
How much does an apartment in STREFA.57 KOSTROGAJ cost?
The cheapest unit in the asking-price register costs 301 440 zł, and the median price is 10 425 zł/m². These are the developer asking prices, not transaction prices.
What floor areas are available?
Units range 25,1–78,8 m². The register lists: 4 1-room units, 58 2-room units, 24 3-room units, 4 4-room units, 2 5-room units.
How many apartments are still for sale in STREFA.57 KOSTROGAJ?
Of 92 priced units, 92 are not marked as sold in the register. Developers update the status with a delay, so treat this as indicative.
Who is the developer behind STREFA.57 KOSTROGAJ?
The development is run by ŻD PŁOCK BIELSKA 1 SP. Z O.O. (KRS 0001183434). Data comes from the developer asking-price register and the KRS company register.
Are prices here higher than nearby?
The median here is 10 425 zł/m², against 10 600 zł/m² across 6 developments within 1,5 km.
Eyeing a specific apartment? Paste the listing link - we will compare its price against this investment, its neighbours and notarial-deed transactions.
Check a listingData comes from the developer asking-price registry (dane.gov.pl, housing price transparency act) and official registries (KRS, MF). Asking prices - not transaction prices. History covers the period since Mieszk.pl started tracking this investment. This is not investment or real-estate advice.


