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Prefabricated houses form a new district in Ravensburg
Prefabricated houses form a new district in Ravensburg
Anonim

Boom regions are suffering acutely from housing shortages. A new district of prefabricated houses and prefabricated components is currently being built in Ravensburg, giving more than 100 families a new home.

Lack of housing in the booming region

In good weather, the view extends from the living room far into the Alps. Sherrie Schößler lives with her family in the new Ravensburger district "Am Hofgut" and is satisfied with the house and location. It takes ten minutes to get to the city center by bus. Lake Constance spills only a few kilometers away. Well-paid jobs are plentiful in Ravensburg, Friedrichshafen or Weingarten. The region is booming - what is missing here are apartments, especially affordable ones. Tobias Rist also lives in the Upper Swabia region: "We lack land, " complains the man from the state. “Sometimes there are ten times as many applicants for 18 new building sites. Then is selected. Without at least two children and regular activity in the local club, they have no chance.”Rist knows a lot about real estate in the Lake Constance region. For many years he has been working as a construction manager for Schwörer Haus, a prefabricated house company from the Swabian Jura. He is currently responsible for the new district on the outskirts in the southwest of the city of Ravensburg.

Fertighäuser in Ravensburg
Fertighäuser in Ravensburg

There is no through traffic in the Ravensburger Hofgut district. In good weather, the street becomes a playground and a meeting point for the residents.

Photo: Schwörerhaus / Jürgen Lippert

Prefabricated wooden houses

More than a hundred apartments are being built on the eight hectares of a former estate of the Württemberg court chamber, each of which is urgently needed. The area is only accessible from the north, so that there is no through traffic. At the entrance to the settlement, four houses with flats and underground garages were built in a classic style. On the sloping terraces, a mix of semi-detached houses, triplets and row houses follows in the first construction phase. In the south and west, two rows of six single-family houses complete the development. All buildings in this part are prefabricated wooden houses - an unusual technique in this context. The client, the Württemberg Chamber of Commerce, originally wanted to build this settlement completely conventionally with the architectural firm Ackermann and Raff. But the prefabricated house manufacturer Schwörer impressed with a highly insulated and energy-efficient concept. And with a high degree of flexibility in the design of the houses. Peter Laustetter, authorized officer at the court chamber, is satisfied: “The prefabrication of the houses by a specialist does not have to mean that the buildings all look the same. Many manufacturers are very flexible today. For example, it was important to us that the exterior walls were plastered on site. Otherwise there would be a horizontal joint in the three-storey buildings on each floor. We didn't want that. From the outside you can no longer guess the timber construction."

Fertighaus-Herstellung
Fertighaus-Herstellung

Wood as a renewable raw material has proven itself in prefabrication: in combination with mineral insulation, it brings an excellent KfW value of 55 and very good sound insulation to the houses on the farm.

Photo: Schwörerhaus / Jürgen Lippert

Build with short distances

The architects naturally had to reschedule at first, but Oliver Braun von Ackermann and Raff is also satisfied. "The quality of the construction work and the tolerances are much higher with prefabrication in the factory than with a classic construction method." Also the shorter construction time the wooden houses are greeted by the residents and the professionals involved. You can see that: the pure construction time is about half. But the planning times are a little longer. “The plan must be completely ready by the start of construction. I can no longer plan in parallel to construction as usual.”The wood for the houses comes from the courtyard's own forest. A building with short distances - ecology in practice.

Familie am Esstisch
Familie am Esstisch

The living and dining room in the single-family houses form together with the kitchen an over 40 square meter unit and promote the family exchange with the Kinzelmanns.

Photo: Schwörerhaus / Jürgen Lippert

Photovoltaics, fresh air heating & heat pump

The buildings in the quarter are airy, the distances between the houses pleasant, but not luxurious. The loosened up buildings fit well into the outskirts. The designs of the houses are much more urban. The gently sloping and green saddle roofs give the settlement its character. They are a pleasant balance between a classic and a modern house silhouette. It was in the interest of everyone involved to create such a creative link in the transition between town and country. Initially, the developer checked a central energy supply unit for the settlement with a wood chip system and a local heating network for all houses. The loose buildings would have caused significant line losses when transporting the heat. In order to increase efficiency, the decision was made instead to use a decentralized solution for the smaller house units. Here, too, the prefabricated house manufacturer Schwörer offered a sustainable solution that has been tried and tested in many houses for years in the form of fresh air heating with a heat pump and heat recovery.

The technical and energetic equipment sets standards. The high-quality insulation ensures an excellent KfW standard of 55, the controlled ventilation guarantees a pleasant climate in the house. There is even a special filter for pollen allergy sufferers that keeps annoying plant seeds out. The meadows are right in front of the house. The builders had been asking for the photovoltaic systems integrated flush into the roofs from the start. You can see that on the aerial photo. Since the second construction phase, own solar power has been standard in all houses. Economical electricity consumers even get a few euros back from the municipal utilities at the end of the month.

Kind springt im Kinderzimmer
Kind springt im Kinderzimmer

Large, double-sided rooms on the first floor delight the youngsters and create the best atmosphere, even when the weather on Lake Constance is bad.

Photo: Schwörerhaus / Jürgen Lippert

Advantage prefabricated house

The construction of the settlement is not yet complete. But the first residents quickly made friends with their quarters. Sherrie Schößler praises the cohesion in the neighborhood: “My husband and I have no family here in the country. That is why we wanted to go to a settlement where the children and we can quickly connect. When everyone moves into a settlement together, everyone is new. Everyone needs the other. That creates a good feeling of togetherness right from the start. “That she's her house Sherrie Schößler never felt that she could not plan to a large extent according to her own ideas as a restriction on her design options. "I've never built, but I've heard a lot about it. Everyone who has ever done this tells how stressful building a house is. We really liked the show house, so we didn't change anything. I was glad that with our house I only had to choose which floor and which tiles should be installed.”

Prefabricated house industry is changing

The prefabricated house industry is facing new challenges because lots are scarce in many German cities. The single-family house specialists are therefore reorienting themselves. A conversation with prefabricated house professional Johannes Schwörer.

The house: Until now, prefabricated house manufacturers have mainly offered single-family and semi-detached houses. Is that changing?

Johannes Schwörer: Of course, the one and two-family house still plays the main role today, but we are increasingly focusing on the apartment building.

Why is that?

A lot of land is already built up in Germany and we have a very high volume of traffic. Therefore, less building land is shown in the surrounding area and land prices are increasing. In the future we will have to build more densely on less space.

Is the Hofgut exemplary for an almost urban district in the country?

I guess so. The aim is to build the property relatively densely, but also with a variety of house types. In this way, different buyer wishes can be taken into account.

Schwörer Haus didn't build the apartment buildings in Ravensburg at all?

At the International Building Exhibition 2013 in Hamburg, we had created our first current multi-family house in system construction. Then there were two subsequent buildings in Pfullingen. We have benefited a lot from these three projects. However, this process was not yet complete when the tender for the farm estate was launched. Now we're ready.

What are the advantages of prefabrication in multi-storey buildings?

Prefabrication offers significantly better quality and precision. We can put all our know-how from 60 years of single-family house construction into the balance.

Johannes Schwörer
Johannes Schwörer

Johannes Schwörer has been managing the traditional company Schwörer Haus since 1995 and continuously develops the prefabricated building.

Photo: Schwörerhaus / Jürgen Lippert

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