Gdynia Wielki Kack and surroundings – a guide for flat buyers

Wielki Kack is Gdynia’s southernmost district – where the city meets Sopot and Gdańsk, next to the forests of the Tricity Landscape Park and the Tricity Bypass. It is home to the only development in Gdynia currently in our offer, Calma. In this guide we describe the district and its neighbours, how to get around and what to check before buying a flat. Listing data comes from the TM Invest catalogue as of 07.10.2026; district descriptions come from verifiable sources listed at the end.

Key facts

• Wielki Kack covers 15.03 km² and, according to Wikipedia, has 10,555 residents (2025). It borders Karwiny, Dąbrowa, Mały Kack, Sopot, Gdańsk and the municipality of Żukowo.
• The district has three distinct parts: the old village, blocks of flats on the escarpment, and Kacze Buki beyond the bypass with new estates.
• The nearest railway stop is Gdynia Karwiny (Pomeranian Metropolitan Railway, PKM), open since December 2017 on the border of Karwiny and Mały Kack.
• The Calma development (Murapol, ul. Starochwaszczyńska 54): 47 available flats from PLN 361,674, median PLN 14,250/m², completion in Q2 2028.
• The average asking price of a new flat across Gdynia is PLN 14,298/m² (NBP, Q2 2026) – Calma sits close to that average.

Wielki Kack in brief – from village to Gdynia district

Wielki Kack was founded in the Middle Ages on the Kacza river, from which it takes its name. The first record of the settlement dates from 1277, when Duke Mestwin II (Mściwój II) granted the village to the bishops of Włocławek. Reminders of that past include St Lawrence’s Church (św. Wawrzyńca) from 1894 and the Źródło Marii shrine, where the stream of the same name rises.

In the 20th century railway lines were built through Wielki Kack, including a section of the coal trunk line from Silesia to Gdynia opened in 1930. The village became a district of Gdynia in 1953, and in 1987 Karwiny and Dąbrowa were split off from it. Today’s Wielki Kack combines village roots with a typical urban estate and new development.

The three parts of Wielki Kack

• Old Wielki Kack – the oldest, village-like part near the railway and the Źródło Marii stream. Detached houses and smallholdings dominate.
• The escarpment estate – built after the village joined Gdynia, mostly blocks of flats.
• Kacze Buki – beyond the Tricity Bypass and part of the Oliwa Forest (Lasy Oliwskie). New housing estates have been built here, there is a riding stable, and more than 20 companies operate on the site of a former industrial plant. Kacze Buki is also home to Gdynia’s main bus depot.

Administratively, Wielki Kack also includes Wysoka – a few streets next to Gdańsk’s Osowa district – and the forest settlements of Gołębiewo and Tasza.

The neighbourhood: Karwiny, Mały Kack, Dąbrowa, Sopot

Karwiny (to the north) is an estate of 1980s blocks by the forests of the landscape park, with the Gdynia Karwiny stop and schools. For Wielki Kack residents it is the natural service hub.

Mały Kack (to the east) is mainly detached houses in the Kacza valley. It has the municipal stadium and the Kacze Łęgi nature reserve, with seaside Orłowo further east.

Dąbrowa (to the north) is one of Gdynia’s youngest districts, with forests and Donas hill (206.5 m above sea level) – the highest point of the Tricity, with an observation tower.

To the east Wielki Kack borders Sopot, and to the south Gdańsk. We cover the districts of the whole city in Best districts in Gdynia to buy a flat.

Getting around: the bypass, PKM and buses

The Tricity Bypass runs through Wielki Kack – part of the S6 and S7 expressways linking Gdynia with Pruszcz Gdański. For drivers this is a big plus: quick access towards Gdańsk, the airport or the motorway. When choosing a flat, however, check how far it is from the road itself and from the railway lines – noise is a consideration.

The nearest railway is the Gdynia Karwiny stop on the Pomeranian Metropolitan Railway (PKM), opened on 10 December 2017 on the border of Karwiny and Mały Kack; it replaced Gdynia Wielki Kack station, which lay away from housing. To reach the seaside SKM line (e.g. Gdynia Orłowo) you need a bus or trolleybus. According to the developer, there are bus stops near Calma, and the centre of Gdynia is about 11.7 km away.

Calma – flats in Wielki Kack in our offer

Calma is a Murapol development at ul. Starochwaszczyńska 54, under construction, with completion scheduled for Q2 2028. According to the developer it will comprise 181 flats in a gated, monitored estate with an underground garage, and the flats will have balconies, terraces or gardens. Floors range from the ground floor to the 3rd floor.

Rooms	Available	Floor area	Prices	Median price
1 room	7	25.4–25.6 m²	PLN 361,674–387,655	PLN 374,454
2 rooms	21	33.9–37.8 m²	PLN 472,766–546,921	PLN 523,530
3 rooms	15	50.2–50.5 m²	PLN 689,598–763,106	PLN 721,231
4 rooms	4	60.5 m²	PLN 862,695–892,965	PLN 867,236

Flats are handed over in developer standard (stan deweloperski) – add finishing works and notary costs to your budget (see stan deweloperski – what is included). All listings in the district: new homes in Wielki Kack; the whole city: new homes in Gdynia.

A studio in Wielki Kack to let – an estimate

The smallest flats at Calma are about 25.5 m² and cost from PLN 361,674 (median PLN 374,454). The NBP gives an average rent for a group of six large cities that includes Gdynia: PLN 67.5/m² per month in Q1 2026, excluding service charges and utilities. For 25.5 m² that is about PLN 1,720 a month, or roughly PLN 20,700 a year – an estimated gross yield on the median price of about 5.5%. This is a rough calculation: the NBP rate is an average for several cities, rents on Gdynia’s outskirts can be lower than in the centre, and it ignores finishing, tax and void periods. More on calculating returns in a flat as an investment and studio or two rooms to let.

What to check before buying a flat in Wielki Kack

• Rush-hour commute – by car via the bypass and by public transport (bus + PKM from Karwiny or SKM from Orłowo).
• Noise – distance from the bypass and the railway lines running through the district.
• Plans nearby – the local zoning plan (miejscowy plan zagospodarowania przestrzennego) and other projects in the area.
• Amenities – schools, nurseries and shops in Karwiny and in Wielki Kack itself.
• Developer documents – information prospectus, developer agreement (umowa deweloperska), payment schedule; see pitfalls when buying from a developer.

Frequently asked questions

Summary

Wielki Kack combines village roots with new estates, forests on the doorstep and excellent access to the bypass. It is not a seaside district – you need to travel to the beach and the centre – but in return it offers quiet and new-build prices close to the Gdynia average. In our offer this means Calma: 47 flats from PLN 361,674, due in Q2 2028.

Want to compare flats at Calma with other options in the Tricity? We will help you choose and buy a flat from a developer – the consultation and shortlist are free, and in most cases there is no commission for the buyer, as our fee is usually paid by the developer. We have been on the market since 2016. If you need a mortgage, our mortgage expert can help: mortgage.

Read also:

• New apartments in Gdynia 2026 – prices, districts, developments
• Best districts in Gdynia to buy a flat
• A flat by the sea: Gdańsk or Gdynia
• Flat handover inspection – a checklist

Sources

• Wikipedia (Polish): Wielki Kack, Mały Kack, Karwiny, Dąbrowa (Gdynia), Obwodnica Trójmiasta.
• NBP: Report on housing prices in Poland in Q1 2026 (Polish) (rents, Q1 2026) and Residential property price database (BaRN) (prices, Q2 2026).
• Listing data: TM Invest development catalogue, as of 07.10.2026.