is based on
three principles: firmness,
utility and beauty

Vitruvius, "The Ten Books on Architecture".

About Tacit Investment

Tacit Investment is an experienced investor with a strong capital position – a precursor on the luxury real estate market in Poland. By creating new product categories and implementing the highest quality projects in its class – it sets the tone for discussions about the future of the Polish top class real estate market.

Tacit Investment’s flagship investment is the apartment building Cosmopolitan Twarda 4 – which was put into use in 2014 – erected in the heart of the capital, next to the peaceful Grzybowski Square. The 44-storey high, fully glazed apartment building brings an element of modernity in a landscape famous for its historical contrasts. It is the first investment of this kind operating in Warsaw, which creates a completely new category of apartment buildings in Poland.

Tacit Investment is also the owner of Park Lane – a unique, cozy residence building for the most demanding customers, situated in a prestigious location in the immediate vicinity of the Łazienki Park at Podchorążych Street. It is a detached 8-storey building with an underground floor, with twelve spacious, luxury apartments finished according to the highest standard.

Other projects of Tacit Investment include well-known buildings in Warsaw, such as the Rialto Hotel, an exclusive sports and recreation club Sinnet, a recording studio Sound & More and an office building at Karowa Street.

The company belongs to the capital group controlled by Grzegorz Jankilewicz and Sławomir Smołokowski, shareholders of the energy company Mercuria Energy Group. MEG is also the owner of J&S Energy, a company well-known in Poland.

  • 01 Apartments Cosmopolitan

    Apartments Cosmopolitan

    Twarda 4, Warsaw

    A prestigious apartment building in the very centre of  Warsaw, designed by a world-renowned architect Helmut Jahn, the designer of, among others, the EU headquarters in Brussels and the Sony Center in Berlin.


    Cosmopolitan Twarda 4 represents a world-class category of apartment buildings. It has become an important part of the capital’s residential offer for the most demanding customers. Fully funded by the investor, Tacit Investment, it is the only building of this type functioning in Warsaw. The development designed by Helmut Jahn – a world-class architect – emerged next to Grzybowski Square, one of the most atmospheric places in Warsaw. The building has 236 finished and equipped apartments with a living area from 54 to 194 square meters. The ground floor of the skyscraper is occupied by a commercial area, and from the first to the third floor by office space. The completely glazed façade provides an amazing view of the Warsaw panorama, mainly of the Palace of Culture and Science and the business centre, with office buildings surrounding ONZ roundabout and Emilii Plater Street. There is also a view of the Saxon Park, the Old Town and the Żoliborz District or the National Stadium and the winding banks of the Vistula River. A unique feature of the investment is openable windows, as well as bays protruding from the body of the building, which broaden the panorama available for residents.


    Apartments in Cosmopolitan Twarda 4 are fully finished and perfectly equipped. Oak wood floors, fully furnished kitchens with kitchen cabinets by Alno and kitchen facilities by Miele, bathrooms with high quality ceramics and fittings of the world’s leading producers (Duravit, Dornbracht, Kaldewei, Duscholux), fully equipped dressing rooms and laundry rooms with a washing machine and dryer – ensure the highest quality of finishing. All apartments are equipped with the HMS system, which allows to control, among others, window-blinds, lighting, heating and air conditioning via tablet or smartphone.

  • 02 Hotel Rialto

    Hotel Rialto


    The elegant interior of the hotel is distinguished by great attention to detail. The rooms are equipped with original, unique furniture from the 1920s, found at auctions across Europe.


    Each room is decorated in a different style, but together they form a consistent whole and reflect the unique atmosphere of the 1920s. Rialto offers rooms with Viennese, African, British and Belgian inspirations. Carefully selected curtains, furniture upholstery and Venetian bathroom mosaic make each room an exceptional work of art. The unique atmosphere of the hotel is highlighted by colourful stained-glass windows, stylized light switches made of Bakelite and an elevator modelled on the one from the legendary cruiser “Stefan Batory”. In the interior of the Rialto Hotel one can feel the spirit of such great artists as Tamara de Lempicka, Charles Rennie Mackintosh, Josef Hoffmann, Koloman Moser, Gustav Siegel, Le Corbusier, Michael Thonet, Frank Lloyd Wright.


    Hotel Rialto also offers to its guests fully equipped conference rooms – each with high speed Internet access, LCD TV and DVD/CD player. Two elegant rooms, Lido and Astoria, are ideal for meetings in an intimate atmosphere. The hotel is also equipped with aromatherapy rooms and a fitness room as well as sauna. The hotel’s library, apart from classics of Polish, English and Russian literature, also offers albums about art, daily newspapers and international colourful magazines.


    Hotel Rialto is a member of the Preferred Hotels & Resorts Association, which brings together more than 120 independent hotels around the world, whose common denominator is the highest standard and unique service offered to customers.

  • 03 Sinnet House of Sports

    Sinnet House of Sports


    A modern and exclusive sports and recreation complex, designed for demanding customers – who value high quality of service, comfort, peace and security.



    An exceptional sports club, the only one in Warsaw to offer such a variety of workout opportunities. Under one roof one can play tennis and squash, swim, work out at the gym, take part in fitness classes and use a spa and wellness area – all in a luxurious and original interior. With the assistance of experienced trainers, everyone can adjust trainings to their own needs with the possibility to expand and diversify them in time.


    The club offers four full-size inside tennis courts, two outdoor tennis courts, three squash courts, a 25-meter swimming pool with Jacuzzi, a wide range of fitness classes, a fully-equipped gym, sauna and steam room. For those who like challenges, rivalry and competition, the club offers organized tennis and squash tournaments, swimming competitions, cycling marathons, tests and exams. A unique place in the club is the restaurant designed specifically for Members, which prepares diverse, light and tasty dishes, composed from natural ingredients, full of vitamins, micro and macronutrients necessary for health, beauty and well-being.


    The Sinnet House of Sports is a sports family with several hundred members, including customers, trainers and staff. It is a place where everyone is treated individually and the intimate atmosphere of the club provides comfort and protects privacy.

  • 04 Park Lane

    Park Lane


    A unique, cosy investment in a prestigious location near the Łazienki Królewskie Park. It is a seven-storey detached building constructed according to the highest standards, offering modern architectural and technical solutions.


    The ground floor offers office space and on higher floors there are 9 comfortable apartments, finished and equipped at the highest standard. Miele appliances in the kitchens, Duravit and Villeroy & Boch furnishings in the bathrooms, dressing rooms with wardrobes, laundry rooms with a washer-dryer, air conditioning, Internet, cable and satellite television are just part of what customers who decide to live in such a unique investment can enjoy. The building is provided with 24/7 security services. The Park Lane Residence is ideally situated in the immediate vicinity of the most beautiful and largest park in Warsaw, the park and palace complex called “Łazienki Królewskie”.




    +48 530 009 600



  • 05 Office building

    Office building


    The building is located in the very heart of the historic centre of Warsaw. It is a prestigious and convenient location only a few steps away from Krakowskie Przedmieście Street. The proximity of the Old Town, S. Jankowski Square and surrounding greenery provide the building with a unique character while the splendid neighbourhood of numerous cafes and restaurants gives an opportunity for successful business meetings.

    Karowa 31A is a great communication point. It takes only a while to get from here to vital parts of the city by both car or public transport. Within easy reach there are bus or tram stops and the second metro line, Nowy Świat station, is situated nearby.

    A classic building which, thanks to a modern approach to revitalisation, has gained a new stylish face and professional style and elegance.  The spacious office area is arranged over five storeys with a comfortable entrance gained through a reception hall. Tenants may organise the interior of the offices in accordance with their own concept and design. Karowa 31A building is also equipped with its own underground car park.




    +48 530 009 600


    Sales office:

    +48 533 377 041

    email :

  • 06 Office building

    Office building


    Bokserska 64 is a spacious commercial property with a wide potential for use. Located in one of the fastest growing business districts of Warsaw, Mokotów-Służewiec, it is perfectly communicated with the most important points in the capital.


    One of the closest points is the Chopin International Airport, which is situated within just a five-minute reach. Its location also enables a convenient connection to the city centre, the nearby business centre, the highway and the southern bypass S2. In the proximity there are bus and tram stops which serve many bus and tram lines, a Park and Ride car park and cycling paths. Bokserska 64 is also well connected with the Warsaw metro and urban railway stations. The property enjoys full access to technical infrastructure, and its investment opportunities are guaranteed by arrangements made in the local zoning plan. The area consists of two buildings: a warehouse and an office building.

    The warehouse consists of two parts. Hall A with the footprint area of 9000 square meters is a storage space with a separate office area and backup facilities. The other part is Hall B with the area of 1146.6 square meters, which meets the conditions for the storage of explosives and fire-hazardous materials. The adjacent area is equipped with a ramp and a manoeuvring yard.

    The office building has four overground storeys and one underground level with the footprint area of 880 square meters and usable area of 3200 square meters. The adjacent area has a guarded car park for approx. 100 cars.

    Bokserska 64 is gated and has a 24/7 security.

  • Cosmopolitan Apartments, Twarda 4

  • Hotel Rialto

  • Sinnet Tennis Club

  • Park Lane

  • 06March

    Cosmopolitan with a scent landscape

    6 March 2016

    Cosmopolitan Twarda 4 is the first and so far the only apartment building in Poland that has its own scent landscape.


    How does Cosmopolitan smell? To answer this question you need to get to know its residents – what their life style is like, what inspires them, what their passions are.

    A resident of Cosmopolitan is a satisfied, successful person – they love travelling, live actively and healthily, and appreciate a high quality of life. Freedom and independence are important to them and they have unique passions to which they dedicate their free time. They are very demanding, so they expect high quality sensory experiences that at the same time are neutral and non-intrusive. For people like them, fragrance expert Marta Siembab and designer Maciej Kawecki’s studio created the first sensory map of a residential building in Poland.


    The Cosmopolitan brand is luminous, bright and spatial in its sensory dimension. It is characterized by movement, dynamics and joy of life, but also genuineness and authenticity. Elegant and discreet, the brand represents the modern day luxury.


    Each part of the building plays a different role and consequently, has a different scent. For example, the reception welcomes incoming guests with elegant, discreet smell of fresh figs, creating an impression of light, clean and open space. It emphasises the modern character of interior design and evokes a feeling of luxury stemming from quality.

    The office part of the building also has its distinctive smell – it is dominated by a hint of blackcurrant, introducing the atmosphere of pure freshness of nature.

    “Cooperation with Cosmopolitan was a great pleasure for us. A light, simple and practical structure of the building was a perfect background for designing for the senses. The discreet interior design and the ambitious space planning were an inspiration for turning visual experiences into sensory landscape,” said Marta Siembab, an independent fragrance expert, a pioneer in using scent for space planning, and the owner of Senselier studio.

  • 26February

    What’s new at Bokserska 64

    26 February 2016

    Office-storage space joined with a connector, which consists of:

    • a guarded car park for about 100 cars
    • vehicle manoeuvre area and parking spaces for trucks in front of the storage building
    • a fenced area with neat green areas


    Download floor plans [HERE]

  • 26February

    New office lessees in Cosmopolitan

    The prestigious building Cosmopolitan Twarda 4, which belongs to Tacit Investment, has obtained two new office lessees – Prelios RE Advisory and Rock Castle Global Real Estate that together have rented almost 600 square meters of office space.

    Download 1st floor plan [HERE].

    Download 3rd floor plan [HERE].

  • 25February

    A new lessee on Karowa 31A

    25 February 2016

    The prestigious office building at Karowa 31A, which belongs to Tacit Investment group, has obtained a new lessee.

    It is a well-known producer of pharmaceuticals, Adamed, that has rented almost 517 square meters of office space.

    Download the article [HERE].

    1st floor plan [HERE].

    2nd floor plan [HERE].

  • 24February

    Parklane News

    24 February 2016
  • 19September

    The official opening of the Cosmopolitan

    19 September 2014

    On 19 September 2014, the first high-rise apartment building Cosmopolitan Twarda 4, designed by a world-renowned architect, Helmut Jahn, was officially opened.


    Today’s official opening of the skyscraper Cosmopolitan is the “grand finale” of this unique project – said Michał Borowski, President of the company Tacit Investment. The entire investment process was completed in just 3 years. In May 2010 we began the work, in September 2011 we reached the base state, in December 2012 the raw state, and exactly one year later, in December 2013, we obtained an occupancy permit. The residents’ association has been operating since the 19th of May this year, and the first residents moved into the building in June this year. We have handed over more than 80% of the sold apartments to their owners. I am proud of accomplishing this extremely complex project in such a short time. As a developer, we took up the challenge of not only building a residential tower with a complex structure on a site restricted to the area of the development, but also of finishing all the apartments. It is a unique project on the Polish market where apartments are sold mainly in a shell and core standard. Today I can say that the project has been successful. Cosmopolitan has become an iconic landmark in the panorama of Warsaw and determined a new quality in the capital’s architecture – added Michał Borowski.


    The Cosmopolitan skyscraper is 160 meter high has 44 storeys and 236 finished apartments with the area from 54 to 700 square meters. They have been fully finished and perfectly equipped. Oak wood floors, fully furnished kitchens with kitchen cabinets by Alno and kitchen facilities by Miele, bathrooms with high quality ceramics and fittings of the world’s leading producers (Duravit, Dornbracht, Kaldewei, Duscholux), fully equipped dressing rooms and laundry rooms with a washing machine and dryer – prove the highest quality of finishing. All apartments are equipped with the HMS system, which allows to control, among others, window-blinds, lighting, heating and air conditioning via tablet or smartphone.

  • 17June


    17 June 2014

    The first high-rise apartment building Cosmopolitan Twarda 4, designed by a world-renowned architect, Helmut Jahn, has been completed.


    We are conducting the last adaptation works to make individual apartments suitable for specific customers – said Michał Borowski, President of the company Tacit Investment. We plan to begin handing over the apartments to their owners starting from 26 June, which means that the first residents will move in still this month. They will have an opportunity to use all the available facilities. The reception desk is already working and the recreation floor with fitness facilities, saunas, Jacuzzi, club rooms and a terrace is ready for use.” The Cosmopolitan is a 160 meter high, 44-storey apartment building, with 236 finished apartments with an area from 54 to 700 square meters.


    Until June 2014, Tacit Investment, the developer and investor of the Cosmopolitan Twarda 4 building, sold one half of the apartments and rented one half of the commercial space. The first office tenants have already moved into the building, the office reception desk has been working normally since the beginning of June. We are still negotiating about the ground floor” – said Michał Borowski.

    The official opening of the building, with the participation of the architect Helmut Jahn and city officials, is scheduled for 19 September 2014.

  • 18September

    Tacit Investment awarded with the title of Friendly Developer 2013

    18 September 2013

    Tacit Investment with its investment Cosmopolitan Twarda 4 was awarded, by “Gazeta Finansowa” journal, “Home & Market” magazine and “Gentleman” magazine, the title of Friendly Developer 2013.

    The project appreciated the most reliable developers showing a friendly attitude to customers, the top quality offer and investments providing residents with exceptional comfort and safety, characterized by excellent location, quality of workmanship and remarkable architecture.

  • 23January

    HOCHTIEF Polska has completed the shell of the first high-rise apartment building in Poland – Cosmopolitan

    23 January 2013

    On 23 January 2013, the topping off ceremony took place at the Cosmopolitan Twarda 4 apartment building. The ceremony ended the completion of shell stage of the 160-meter skyscraper just 20 months after the start of construction. The investor of the building which has been erected in the very centre of Warsaw in the immediate proximity of Grzybowski Square, is the company Tacit Investment.


    The project includes the construction of a 44-storey apartment building with 252 finished apartments and a five-storey office and commercial building. The skyscraper is located on a four-storey podium designed for retailers (shops, restaurants) and offices. There is an underground car park with 299 parking spaces. The office and commercial building erected next to it will be occupied by cafes, galleries and offices. The building will be connected to the podium of the tower with a glass roof. The tower will be equipped with five elevators: two express elevators will serve floors from 32nd to 43rd, two others – the remaining floors, the fifth elevator will be used as a service lift. The Cosmopolitan residents will have at their disposal a business and recreation area located on the 4th floor. From there it will be possible to enter a terrace, designed exclusively for the Cosmopolitan residents, delivering amazing views on, among other things, Grzybowski Square and Emilii Plater Street.


    The total area of the building is over 53 000 square meters. The architecture of the building is distinguished by a simple form of sharp compact prism. The totally glazed façade of varied texture provides a unique view for those looking from the outside and maximum light for the interior. The completion of work is planned for mid-2013 and the handing-over of ready, completely finished apartments – in the first quarter of 2014.


    We have completed all the work of the closed-in shell, currently we are working on the installation of an aluminium and glass façade, interior installations and fit-out works – said Wojciech Urbański, contract manager at HOCHTIEF Polska.

  • 23November

    Tacit Development S.A. – a new capital group in the developer market

    23 November 2012

    Holding Tacit Development S.A. – a newly formed capital group with Michał Borowski as its president.


    The holding includes:


    – Tacit Development Sp. z o.o

    – Plac Katedralny Sp. z o.o

    – Jasnier S.A.


    The Group’s equity amounts to PLN 117 million. The most important Warsaw investments of the Group include Cosmopolitan Twarda 4 apartment building at Grzybowski Square, an apartment building at Podchorążych Street, an offices and logistics centre at Bokserska 64, and a four-star hotel at Katedralny Square in Wrocław. In addition, the capital group, which includes the Tacit Development S.A. holding, possesses also, among other things: Hotel Rialto at Wilcza Street and an exclusive sports club Sinnet at Gołkowska Street. Tacit Development S.A. is a real estate development company that invests in real estate on the basis of the company’s capital, shareholders’ funds and external financing. The value of assets in 2014/2015 is estimated to amount to more than PLN 1 billion.


Magdalena Budnik

+48 602 151 176


Iwona Wójcik

+48 531-360-901


Paulina Bziuk

+48 531 385 108

Press Office

+48 602 151 176

Registration Data

KRS: 457787

REGON: 015747782

NIP 107-000-18-09

Contact details

Tacit Development Polska JS sp. z o.o. sp.k.
ul. Twarda 4, 00-105 Warszawa
Tel: 22 213 50 00