The six-storey property at Franz-Josefs-Kai 27 (Rabensteig 8), 1010 Vienna, was acquired by 3SI Immogroup in 2022. The site was first mentioned in documents at the beginning of the 15th century, and two buildings stood on the site until the end of the 19th century (Haus Stadt 482+483). Today's magnificent corner building was constructed in 1901 by the architects Julius Goldschläger and Siegfried Kramer, who - both in co-operation and individually - built numerous ornate Wilhelminian-style buildings in Vienna's inner districts. The property, which is let in its entirety, is held in the long term.


Photos: © Andreas Wallner, leofilm.at

With great attention to detail, new life is being breathed into the historic walls of the period building at Van der Nüll Gasse 51. 23 unique freehold flats, including 7 fantastic penthouse flats, are being developed to a high standard here by 3SI Immogroup, not far from the Laaer Wald recreation area. The 2- to 4-room flats offer living spaces of between 42 m² and 98 m², high-quality fittings and open spaces on the courtyard side.

Go to project

Go to project

The period building in Siebenbrunnengasse, built around 1890, is being extensively renovated by 3SI Immogroup and connected to Vienna's district heating network. The 23 freehold flats offer living space of between 30 and 119 m², 1 to 4 rooms and newly constructed open spaces. Four exclusive top-floor flats will be created as part of the loft conversion.

Go to project

The Gründerzeit building in Landstraßer Hauptstraße, built around 1900, is being extensively refurbished by 3SI Immogroup and connected to Vienna's district heating network. The 26 freehold flats offer living space of between 32 and 187 m², 1 to 4 rooms and newly built balconies and terraces. Five exclusive top-floor flats - two single-storey and two maisonette flats and a generously planned maisonette penthouse with pool, private lift and fantastic views over the city - are being created as part of the top-floor extension.

Go to project

Built in 1878, the period building at Pfefferhofgasse 2-4, 1030 Vienna, has been owned by 3SI Immogroup since 2020. Over 40 years ago, restaurateur Niky Kulmer, who died in 2011, opened the "Kuchlmasterei" on the ground floor of the splendidly decorated Wilhelminian-style building, a gourmet restaurant that was known far beyond Vienna's city limits; the building itself has been used as a flat block in recent years. The Wilhelminian-style building and the individual flats will be extensively renovated in 2020/21 and retained by the company.

Built in 1900 by architect Berehinak Ferdinand Franz, the Wilhelminian-style house impresses with its elegant, castle-like structure. The marvellous inner courtyard is reminiscent of a castle garden and perfectly rounds off the stylish building.

Go to project

At Hackenbergweg 43, 1190 Vienna, 17 exclusive villas with upmarket fittings are being built. The quiet location in the middle of the vineyards also impresses with a wonderful view of Vienna, which can be enjoyed without restriction from the private terraces and balconies. The skilfully designed villas are spread over 3 floors and are harmoniously complemented by private pools and parking spaces. The turnkey handover is scheduled for summer 2023.

Go to project

The extensively revitalised, magnificent apartment building in Hofstattgasse, 1180 Vienna, located between the observatory and Schubertpark, is reminiscent of Ludwig II's Neuschwanstein Castle from the outside. The flats on the top floor offer a dream view over Vienna from their spacious terraces.

Under the project title THE UNIQUE Apartments, property developer 3SI Immogroup has been developing an exclusive new build in a prime Döbling location on Hackenberg at Krottenbachstrasse 162, 1190 Vienna, since the end of 2021. The ten exquisite condominiums not far from the charming wine tavern neighbourhood of Neustift am Walde are scheduled for completion in the second quarter of 2024.

Go to project

At Freihof 7-9, 1220 Vienna, 3SI Immogroup is currently developing a high-quality, modern new-build complex consisting of 36 privately financed freehold flats and 2 terraced houses. The properties offer living space of between 33 and 116 m², 2 to 4 rooms, underground car parking spaces and attractive balconies, terraces and private gardens. In addition to the high-quality fixtures and fittings, a particular highlight is a spacious urban gardening area, which will be available to future residents - along with a bicycle storage room with an e-charging station.

Go to project

The Wilhelminian-style building at Beatrixgasse 4 a, 1030 Vienna is in an absolute prime location in the Landstraße district. A passenger lift was integrated as part of the loft conversion by 3SI Immogroup, and the façade and stairwell were extensively renovated in 2019. Due to its excellent location, the Wilhelminian-style building offers numerous shopping opportunities, public facilities and shops for daily needs as well as the Wien Mitte transport hub in the immediate vicinity.

Located between Donaupark and Kagran is the latest Gründerzeit property to be revitalised by Viennese apartment building developer 3SI Immogroup to its usual outstanding standard. The attractive 1- to 4-room flats range in size from 30 m² to 126 m² and feature high-quality fittings and newly created open spaces in the quiet inner courtyard.

Go to project

The Wilhelminian-style building at Seisgasse 18, 1040 Vienna, not far from Südtiroler Platz, has 2,300 m² of usable space and a beautiful entrance area with marble slabs. The property, which is adjacent to Alois Drasche Park, was extensively renovated by 3SI Immogroup in 2020, and the previously unadorned exterior façade and entrance area have since been restored to their former splendour. For 3SI Immogroup, the period building in Seisgasse is a showpiece for the refurbishment of façades in the Wilhelminian style.

Go to project

25 high-quality condominiums in an excellent Wiedner location near Vienna's main train station: THE CORE offers the highest quality of life for city dwellers who appreciate urbanity and individuality. Thanks to its central location and perfect connections to the whole world, THE CORE makes its residents independent, flexible and mobile - and makes borders disappear. The revitalized Gründerzeit building inspires with modern technology, high-quality furnishings and courtyard-side balconies and terraces.

Go to project

The imposing property at Cobenzlgasse 32, 1190 Vienna was acquired in 2022. Built around 1850, the house was remodelled and renovated several times between 1948 and 1992. In addition to the main house, there are also three spacious terraced houses on the extensive grounds. The property, which offers around 2,600 m2 of office and residential space on over 5,600 m2 of land, is to be developed to a high standard by 3SI Immogroup in 2023/24.

The magnificent Wilhelminian-style building at Widerhoferplatz 1, 1090 Vienna, acquired by 3SI Immogroup in 2022, will be extensively revitalised in 2022/23 and developed under the project title "Grand Park Residence". Not only are the spacious 4- to 6-room flats in the apartment block built in 1909 by master builder and architect Marshall Johann impressive, but also the enchanting balconies, which offer wonderful views over the neighbouring park.

Go to project

Go to project

Built at the turn of the century, the five-storey period building at Lindengasse 25 is located in one of the most sought-after residential areas of Vienna's 7th district. Versatile freehold flats with 1 to 3 rooms and 35 to 72 m² of living space are now being sold.

Go to project

Go to project

Acquired at the beginning of 2021, the apartment block at Hernalser Hauptstraße 49/Bergsteiggasse 26A, 1170 Vienna was extensively refurbished by 3SI Immogroup in the spring of the same year. In addition to revitalising the common areas, the previously unadorned exterior façade on the right-hand side of the corner apartment building was given a handcrafted stucco finish. The freehold flats - including top-floor flats with attractive open spaces - are now being sold.

Go to project

Go to project

Go to project

With great attention to detail, new life is being breathed into the historic walls of the period building at Ehrenfelsgasse 12. 33 unique freehold flats, 8 of which are dreamlike top-floor flats, are being developed to a high standard by the 3SI Immogroup not far from Schönbrunn Palace. The 1- to 4-room flats offer living spaces of between 35 m² and 117 m², high-quality fittings and open spaces on the courtyard side.

Go to project

Built in 1912, the magnificent Wilhelminian-style apartment building at Skodagasse 15, 1080 Vienna, will shine in new splendour in 2021 after extensive complete renovation by 3SI Immogroup. The unique period building combines an exclusive location close to Vienna's city centre, beautifully revitalised old flats with impressive ceiling heights, open spaces in a park-like inner courtyard and high-quality furnishings. The in-house concierge service rounds off "The Masterpiece" perfectly. The 3SI project was also honoured with the International Property Award in the "Residential Redevelopment/Renovation" category in 2021.

Go to project

The Wilhelminian-style building at Brigittaplatz 16, 1200 Vienna, was acquired by 3SI Immogroup in 2021. The development of the property is planned for 2023/24.

The picturesque period building at Denisgasse 35, 1200 Vienna, was acquired by 3SI Immogroup in mid-2020 from long-standing private ownership. The property, which is ideally located due to its proximity to Brigittenauer Lände, has around 1,150 square metres of usable space on a total of 5 floors. The apartment building is being revitalised by 3SI Immogroup.

The charming apartment block at Kröllgasse 27, 1150 Vienna, was acquired by 3SI Immogroup in 2021. The four-storey old building will be extensively revitalised by 3SI and high-quality condominiums will be created. The top floor is to be converted.

High-quality new build in one of Vienna's best locations:
The innovative new build project "La Belle Vie" by 3SI Immogroup at Raffelspergergasse 11-13, 1190 Vienna, enjoys a quiet location with views of the Viennese vineyards. A total of 19 modern, light-flooded condominiums are located in two former residential buildings that were completely gutted, refurbished and rebuilt from the inside out in 2020. With floor areas ranging from 44 m² to a generous 156 m², attractive open spaces, high-quality luxury fittings and an in-house underground car park, La Belle Vie offers a lifestyle at the highest level.

Go to project

The striking corner apartment block at Burggasse 119/corner of Wimbergergasse 18, 1070 Vienna, was acquired by 3SI Immogroup at the end of May 2024 from long-standing private ownership. The five-storey building, which currently has around 1,400 m2 of usable space next to the well-known Admiral cinema founded in 1913, is to be revitalised to a high standard from 2025 and extended with a loft conversion.

The magnificent apartment block at Schüttelstraße 75, 1020 Vienna, was acquired by 3SI Immogroup at the end of May 2024. From 2025, 3SI Immogroup plans to carry out a high-quality refurbishment and create new living space by extending the top floor. The five-storey Wilhelminian-style building in bright yellow with charming street-side balconies and an unobstructed view of the Danube Canal will have gained around 430 m2 of additional urban living space after its development. The property, the "Elisabethhof", is located not far from the Vienna Prater and the underground stations "Rochusgasse" and "Kardinal-Nagl-Platz".

Around 1,000m2 of living space in the charming apartment block consisting of two properties at Bennoplatz 1 + 1A/Florianigasse 67, 1080 Vienna, was acquired by 3SI Immogroup at the end of 2021. The flats in the old building, which was constructed in the 19th century, are being extensively refurbished and will subsequently be put up for sale.

Go to project

The old Leopoldstadt period building at Große Pfarrgasse 6, 1020 Vienna, will be extensively refurbished by 3SI Immogroup in 2020/21, the previously plain façade will be visually enhanced with new stucco and the top floor will be extended. Nine exclusive condominiums and three luxurious penthouses with unrivalled views of the green Augarten park offer living spaces ranging from 54 to 1342 m². The revitalised period building boasts modern technology, high-quality fittings and courtyard-side open spaces in a great location near Karmelitermarkt.

The charming, four-storey apartment block at Keinergasse 31, 1030 Vienna was acquired by 3SI Immogroup in 2021. The property will be held in the long term.

The apartment building at Blindengasse 39, 1080 Vienna, which was extensively revitalised by 3SI Immogroup in 2020, is located in one of Vienna's most popular residential areas, Josefstadt. 29 exclusive condominiums, luxuriously furnished, offer the highest quality of living in a historic ambience. The excellent location between Florianigasse and Laudongasse ensures optimal infrastructure and excellent local amenities for all daily necessities.

At Van-der-Nüll-Gasse 78, 1100 Vienna, 3SI Immogroup built 25 new condominiums with a total area of 1,279 m² in 2019/20. The flats not only impress with their well thought-out spatial concept, but also with their individual sizes of between 39 m² and 136 m² and attractive, spacious open areas. Thanks to its proximity to the Troststraße underground station (U1), the modern low-energy building offers perfect connections to Vienna's city centre, while the Wienerberg recreational area is within walking distance.

The charming corner apartment building at Seidengasse 10/Zieglergasse 28, 1070 Vienna, is situated in an excellent and sought-after residential and commercial location in Vienna's 7th district. The majority shares acquired by 3SI Immogroup in 2021 will be held in the portfolio for the long term.

The property at Edelhofgasse 8, 1180 Vienna, was acquired by 3SI Immogroup in 2012. The company carried out a comprehensive refurbishment of the Wilhelminian-style building.

The old Brigittenau building at Burghardtgasse 10-12, 1200 Vienna, was renovated and modernised to a high standard by 3SI Immogroup. In 2020, 13 stylishly revitalised condominiums went on sale. The property stands out thanks to its excellent location in the 20th district near the Danube Canal and Hannovermarkt.

Built in 1897 by city architect Leopold Roth, this impressive period building at the beginning of Vienna's lively Mariahilfer Strasse (Mariahilfer Strasse 127/Bürgerspitalgasse 29, 1060 Vienna) was acquired by 3SI Immogroup in 2020 and extensively revitalised. Particular attention was paid to the refurbishment and reconstruction of the façade. The unadorned façade on the Gürtel side was supplemented with handcrafted stucco, balcony railings in the style of old Vienna were renewed, the entrance area and the other common areas were revitalised to a high standard and furnished in the style of old Vienna.


The property, which is owned by 3SI Immogroup and fully let, will be held in the long term.

Built in 1877, the magnificent Wilhelminian-style apartment building at Dißlergasse 8, 1030 Vienna, will shine in new splendour in 2021 following extensive refurbishment by 3SI Immogroup. The unique period building combines an exclusive location close to Vienna's city centre, beautifully revitalised old flats with impressive ceiling heights, open spaces in a charming inner courtyard and high-quality furnishings.

Go to project

The apartment building at Erdbergstraße 35, 1030 Vienna, built in 1905, was extensively renovated, the top floor was extended and a lift was installed. The Wilhelminian-style building with its beautifully structured façade and inviting, imposing entrance has 40 lettable residential units. Due to its proximity to Landstraßer Hauptstraße and Rochusmarkt, the property has an excellent infrastructure.

The apartment block at Barmherzigengasse 21, 1030 Vienna, impresses with its beautifully structured façade and stylish entrance. During the loving refurbishment of the 14 period flats by 3SI Immogroup, particular attention was paid to the high-quality and modern furnishings, which emphasise the charming character of the old building. An additional plus is the central location in the 3rd district; public transport, restaurants and local shops are just a few minutes' walk away.

The beautiful corner apartment building at Alsegger Strasse 38/Ferrogasse 21, 1180 Vienna, was acquired by 3SI Immogroup 2020 from a long-standing private owner. The property, which is in the immediate vicinity of the charming Gersthofer Straße, Türkenschanzpark and the enchanting Sternwartepark, has around 1,200 m² of usable space, an attic that has already been converted to a high standard and is in excellent condition. The Wilhelminian-style building is maintained by the 3SI Immogroup.

The architect Merz Oskar built this charming period building in Apollogasse in Vienna's 7th district in 1882. The apartment block in Vienna's Neubau district is particularly impressive due to its proximity to the Mariahilfer Straße shopping street and the many shopping opportunities it offers. The historic façade lends this period building a historic Viennese flair.

The apartment block at Glasergasse 11, 1090 Vienna, close to Porzellangasse, Liechtensteinpark and the Danube Canal, is a classic period building from the turn of the century. During the refurbishment by 3SI Immogroup, particular attention was paid to restoring the elegant character of the Wilhelminian era to the structured façade and the inviting entrance area. A lift was also installed as part of the loft conversion. The bright, inviting staircase leads to the 14 charming and spacious flats in the old building.

The new building erected by 3SI Immogroup at Raffaelgasse 10, 1200 Vienna, is another flagship project in 3SI's new-build division: 44 modern flats, most of which have balconies, terraces or private gardens and are furnished with high-quality materials, were built here using a low-rise construction method. In addition to a green façade, the new building offers parking spaces with electric hook-ups in its underground car park and bicycle storage room. The location near Augarten is also first-class in terms of public transport links: the underground stations U6-Jägerstraße and U4-Friedensbrücke are just a few minutes' walk away.

In this corner property built around 1900 at Roßauer Lände 17, 1090 Vienna, 3SI Immogroup revitalised the entire apartment building; the façade, entrance area and staircase were renovated in the style of old Vienna. In addition, the top floor was extended and high-quality new living space was created by 3SI in a sought-after location in the Servitenviertel. Loggias and terraces facing the courtyard round off the high-quality property offer.

This unique apartment block at Burggasse 97, 1070 Vienna, is particularly eye-catching due to its small number of storeys - one ground floor and two standard floors. Contrary to what the structured façade might suggest, the charming inner courtyard contains numerous old flats in a quiet courtyard location, most of which are accessible via pavements.

Go to project

This Stilzin house at Laudongasse 32, 1080 Vienna, which was built at the turn of the century, impresses with its top location and unmistakable character of an old building. The building was completely renovated by 3SI Immogroup, a lift was installed and the attic was converted. A special feature of this apartment block is that all sides are detached, which means that all flats have a particularly high level of natural light thanks to the generous window areas.

This enchanting 4-storey Wilhelminian-style building in Döbling was acquired from private ownership by 3SI Immogroup in 2020. Located at Kreindlgasse 12 in the 19th district, the building has 834 m² of usable space as well as a picturesque, green inner courtyard. The property has been extensively refurbished and is maintained as an existing building.

The beautiful historic Wilhelminian-style corner building at Borschkegasse 15, 1090 Vienna, enchants with an elegant entrance and a staircase that has been lavishly restored by 3SI Immogroup, in which countless well-preserved period building elements can be admired. In addition to the stylish and high-quality revitalisation of seven owner-occupied flats, new balconies were built on the courtyard side. A particular advantage is the proximity to the AKH and numerous public transport options, which provide ideal connections to Vienna's city centre.

In the historic and completely revitalised apartment building in Kegelgasse, 1030 Vienna, 3SI Immogroup developed 10 condominiums on 4 floors. The classic 3SI furnishings - panelled doors, herringbone parquet flooring, large tiles and rain showers in the bathrooms - were also used to stylish effect in this Wilhelminian-style building, down to the smallest detail. The apartment building is located next to the Sophiensäle in one of the top locations in the 3rd district and is just a few minutes' walk from the centre of Vienna.

The charming apartment building at Linzerstraße 381a, 1140 Vienna, was extensively renovated by 3SI Immogroup in 2020; in addition to the staircase, the street façade, which was already noticeably outdated, was also revitalised and has since shone in new old splendour.

This apartment block Am Tabor 8, 1020 Vienna, impresses with its structured and detailed façade, which stands out from the other apartment blocks in the neighbourhood. The building and its individual flats have been transformed back into a gem by 3SI Immogroup through detailed work; the revitalisation of the façade is also continued in the entrance area with a bright and inviting entrance.
The good and central location of the apartment building, close to Vienna's Augarten, offers excellent infrastructure and charming green spaces such as the Augarten or the Prater.

An attractive new-build project realised by 3SI Immogroup and Winegg Realitäten: A total of 104 new-build flats with sizes between 45 and 75 m² in a central Simmering location were completed in 2021 at Dittmanngasse 4, 1110 Vienna. With a total usable area of over 6,000 m², new, affordable and high-quality living space has been created in Vienna.

This elegant apartment block at Ferdinand Buchbergergasse 38 in Mödling was built around 1910 and is in very good condition. The house comprises a ground floor, two standard floors, a converted attic and a basement. The quiet yet central location of the apartment block, close to the Mödling state hospital, offers excellent local amenities as well as a number of kindergartens and schools. The shopping area of the main street is just a few minutes away, as is the pedestrian zone with a wide range of shops and restaurants. Very good public transport connections are guaranteed by the nearby railway station. In addition, the motorway connection takes you to Vienna's city limits in around 15 minutes, and Vienna Schwechat Airport can also be reached in just 30 minutes via the S1.

This classic apartment block from 1899 next to the Rudolfstiftung was extensively renovated by 3SI Immogroup with great attention to detail. The smooth façade was transformed into a detailed, beautifully structured façade that reflects the original stylish character of the Gründerzeit building. The flats at Hafengasse 16, 1030 Vienna were extensively refurbished to a high standard and balconies were added on the courtyard side. The period building also scores with its attractive location close to the city centre and the green oases of Belvedere Palace and the Schweizergarten.

The period building at Prandaugasse 51, 1220 Vienna, was revitalised by 3SI Immogroup with great attention to detail. The apartment block has a basement, a mezzanine floor and three standard floors. The inviting entrance and the friendly staircase lead to 14 flats with floor areas of between 27 and 155 m². Located in a quiet pedestrian zone close to the centre of the Danube, the old building with its charmingly structured façade offers numerous local shops, recreational facilities and public transport stops in the immediate vicinity.

The charming old building at Fendigasse 23, 1050 Vienna, was acquired by 3SI Immogroup at the beginning of 2021. The apartment building, which currently still has four floors and dates back to 1909, was extensively revitalised in 2021/22. In addition to the loft conversion, which will create 415 m² of additional living space, there are plans to create new garden flats and add balconies.

The Klimt Hotel is situated in a quiet location in Vienna's 14th district; in addition to excellent transport connections, the hotel stands out due to its proximity to Schönbrunn Palace and the charming Hietzing district.

The artistically designed flat hotel has 25 rooms in various sizes and is designed in the style of one of Austria's most famous painters - Gustav Klimt. His most famous works can be found throughout the building. The hotel's own garden offers a retreat for all guests and invites them to linger.

The charming corner apartment building at Herbststraße 32, 1160 Vienna, was extensively revitalised by 3SI Immogroup in 2020. In addition to the refurbishment of the exterior façade, the interior of the period building was also extensively overhauled. As part of the staircase refurbishment, the walls were replastered and painted - as were all the doors -, handrails and banisters were restored and new lights were installed.

This mid-rise apartment building at Stolzenthalergasse 3, 1080 Vienna, immediately catches the eye thanks to the beautiful window roofing and the numerous divisions of the façade. The building has a usable area of around 664 m², which is divided into eight residential units and two commercial units on the ground floor.
The period apartment building is located in a very popular and highly sought-after residential area of Vienna, the 8th district of Josefstadt. The public transport connections are also excellent: The U6 underground station "Thaliastraße" is just a three-minute walk away. Tram line 46 offers a direct and convenient connection to the city centre.

This elegant apartment block at Ybbsstraße 38, 1020 Vienna, built at the turn of the century and refurbished to a high standard by 3SI Immogroup, is just a few minutes' walk from the natural paradise of the Prater. The corner building, consisting of the ground floor and 3 standard floors, has a quiet inner courtyard and a wonderfully restored, structured façade with very well-preserved period building elements.

This classic and well-maintained apartment block in Lorenz-Mandl-Gasse, 1160 Vienna, is particularly impressive with its elegant façade. The entrance, which is decorated with stucco and period elements, further emphasises the old building character of the corner building, which was built around 1900. The location of the period building is also impressive; in addition to perfect public transport connections, the proximity to the Steinhofgründe and the Gallitzinberg enables numerous leisure activities in the countryside.

The Art Hotel Vienna is centrally located in Vienna's 5th district of Margareten and offers its guests excellent connections to Vienna's city centre. The hotel welcomes its visitors with over 100 different works of art - from contemporary paintings to artistic sculptures. In addition, there are constantly changing exhibitions and art events at the Art Hotel, but the graffiti façade also emphasises the artistic flair. This was specially designed for the Art Hotel by graffiti artist Sarah "siuz" Kupfner.

The residential building at Sobieskigasse 35, 1090 Vienna, is a pioneering project by 3SI Immogroup in the field of ecological new builds and smart, future-orientated construction methods. A total of 26 freehold flats have been built in the ecological low-energy building with a green façade. The flats range in size from 39m² to 118m² and each flat has been equipped with extensive open spaces. The underground car park was equipped with charging stations for e-cars and e-bikes.

Go to project

Go to project

Go to project

Built at the turn of the century, this apartment block at Hütteldorfer Straße 97 is located in a sought-after residential area of Vienna's 15th district. Following the extensive renovation of the elegant Wilhelminian-style façade by 3SI Immogroup, all the common areas of the apartment block were also refurbished with great attention to detail. The corner apartment block has 22 residential units with floor space ranging from 26 to 134 m². In addition to very good transport links, the apartment block also offers excellent local amenities. Numerous shopping facilities, public amenities, parks and shops for daily needs are in the immediate vicinity.

Go to project

The four-storey property at Steudelgasse 21\-23, 1100 Vienna was acquired by 3SI Immogroup in 2021. Extensive refurbishment work was carried out in 2022, including the installation of new handmade stucco.

Go to project

Go to project

Go to project

The old building at Hagenmüllergasse 1/Löwenherzgasse 11, 1030 Vienna, which was built during the Gründerzeit period, was acquired by 3SI Immogroup in 2021 and the four-storey property will be held in the long term.

Go to project

Go to project

Go to project