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Detached house, Sonnhalde, Hünenberg, Zug, Switzerland
I aim to design and implement customised solutions for new buildings, conversions and redevelopments. Enjoyment of the pure sensual pleasure of space and materials is just as important as the practical aspects of construction and technology. All my buildings and projects benefit from an integrated design approach, combining functionality, highest architectural standards, economy and ecological sustainability.
squid offices, Untermüli, Zug, Switzerland
Each interior living space is designed to suit the needs of its occupants. I think of interior design as a person’s third skin. As such, it must breathe and interact. Interiors also function as a stage where people can perform.
Cyberhelvetia pavilion at Expo.02, Biel, Bern, Switzerland
Theme design here means, first of all, the creation of room for display and exhibition, the use of space to present themes or products. Rooms are designed for specific purposes or projects. The design arises in various ways, combining a wide range of media, materials and techniques. Spaces can be experienced both on the real and on the virtual level. Collaboration with artists and scenic and lighting designers is an integral part of theme design.
Detached house “im Feld”, Blickensdorf, Baar, Zug, Switzerland
Minergie is the official label for energy-efficient construction. Our team created this detached fieldside house in 1997 as the very first Minergie building in Central Switzerland.
Set 1
The aim is to develop a product combining functionality and quiet sensuality. Perfect grasp of an item’s significance and use is essential for an integrated design.
The brief was to accommodate increasing space requirements of a family of six. An initial step was to integrate a neighbouring 2-room flat into the existing 5 ½-room flat.
Both flats are situated on the top floor of a multi-family residence. The lateral extension also involved a redesigned bathroom, renovated kitchen, enlarged living room and a newly created storeroom.
The second project step involved glazing for the balconies to provide noise insulation and renovation of the existing guest WC.
The past year saw further enhancements to the flat, which now benefits from access to the roof terrace situated one floor above. A staircase connects the living area directly to the newly built attic floor, which features further storage space and a wellness area with relaxation zones, fitness area and a bathtub, as well as access to the spacious exterior terrace.
Images
Regine Giesecke, Wiesbaden, Germany
This unusual detached house benefits from a location in the Flims-Waldhaus plain amidst impressive mountain ranges. The property is situated in a residential quarter, surrounded by other detached homes built in the past three decades. It was designed to accommodate a family of six.
The floor plan:
The basement comprises two cellar rooms, laundry, sauna with adjoining shower room and HVACR. Heat is sourced from a geothermal heat pump.
The ground floor is divided into a living area with cloakroom at the entrance, cooking/dining area, separate WC, living room with covered terrace and the children’s sleeping area, comprising four bedrooms and a children’s bathroom.
The corridor doubles as a dressing room.
An exposed concrete single staircase connects to the first floor, used predominantly by the adults and comprising bedroom, bathroom, closet room, a spacious living area and a storeroom.
If needed, the single family residence can be converted into apartments on two levels for double occupancy.
Exterior space is divided into two areas: A protected zone between garage and main building serves as a direct extension to the cooking and living/dining area, furnished with natural arena-style wood seats. A free, open space is planted with pasture. The spacious double garage screens building and exterior areas from the road and additionally houses a multi-purpose room with garden access.
Other than one exposed concrete wall on the ground floor, all walls and ceilings on the upper floors are made from prefabricated wood elements.
Exterior façade and roof are encased in open, rough sawn larchwood shuttering, merging into a cohesive structure.
Planning and design partners:
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Timber frame design
Nussbaumer Holzbau, Baar, Switzerland
Images
Regine Giesecke, Wiesbaden, Germany
The municipality of Neftenbach plans to sell this centrally situated circa 10,200 m2 site subject to purpose and project specific use. An architect was selected under a 2-stage public anonymous project tender.
Overall design plans for the superstructure are to accommodate approximately 43 apartments and circa 1,200 m2 retail space.
Given the location, the future superstructure’s new retail and service spaces will be closely linked to overall town centre development.
The first tender stage yielded 80 proposals, six of which were selected for the second tender stage. We won the bid in the second stage.
Planning and design partners:
Project management
i+k Architekten, Zug, Switzerland
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Landscape architects
Appert & Zwahlen Landschaftsarchitektur, Cham, Switzerland
Image design
Andreas Hochstrasser, Hünenberg, Switzerland
This semi-detached house benefits from its unique location between lake and high street in Oberwil town centre. Entrance halls on the ground floor, rooms on the first and kitchens on the second floor enliven the street façade at different times of the day. The building’s mural main body and recessed wooden attic floor reprise classic structures of the town’s historic houses. Elements of surrounding traditional buildings are also reflected in the massive wooden walls and the window proportions.
The house is divided vertically into two equal halves. Two double garages and adjoining rooms are accessed from the basement. A jointly used staircase connects to the ground floor. Two entrance halls with large street-facing windows give access to the upper floor living spaces and studios with balcony in each half of the house. Bedrooms and bathrooms are situated on the first floor, the second floor houses the open living, dining and cooking areas.
The attic floor features conservatories and large terraces.
Planning and design partners:
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Structural engineers
Berchtold und Eicher, Zug, Switzerland
Images
Regine Giesecke, Wiesbaden, Germany
German federal state bank Landesbank Baden-Württemberg is planning an office building at Schlossplatz 21 in Karlsruhe, Germany. The site benefits from a distinctive location in Karlsruhe’s baroque quarter, facing the palace. In addition to 10 invited architects, a further 35 firms were selected by lot to propose solutions.
Our proposal reprises the historically grown block perimeter structure of surrounding properties. A central feature is the inner courtyard, designed as an oasis of calm.
The exterior façade is covered in metal mesh. This outer sheathing lends a contiguous, monolithic look. The courtyard glass façade features intermittent protrusions, marking special functional spaces in the building’s office grid. Our design reached the second assessment round.
Planning and design partners:
HVAC and sanitary systems
Hans Abicht AG, Zug, Switzerland
Image design
Andreas Hochstrasser, Hünenberg, Switzerland
The 1980 multi-family residence was to be extended by an attic floor, adding a fully detached flat on the roof of the four storey house.
To minimise load on the existing building, the new attic floor was designed as a prefabricated wood structure. Wood exteriors are covered in Profilit glass (a semi-transparent cast glass). The material is low-maintenance and lends a bright look to the façade. The structure features exterior spaces to the West and South, which may be used as patios. The interior is divided into a contained sleeping and an open living area. Interior design reflects the unique location high above the Zurich rooftops.
Planning and design partners:
Construction management
Naumann und Hotz, Baar, Switzerland
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Electrical planning
A. Hegglin, Menzingen, Switzerland
Images
Franziska Stocker, Edlibach, Switzerland
The brief was to create a joint presence for parent and subsidiary company for the Interpol trade fair in Amsterdam.
OVD Kinegram is world leader in Optically Variable Devices to safeguard state documents and bank notes. The trade fair was to be occasion for launch of the company’s new corporate identity.
To allay end clients’ concerns about the alliance between OVDK and parent company Kurz, leading manufacturer of foils, a “neutral” meeting ground was created between the two companies’ trade fair stands.
Equitable segments protectively frame a free space for informal discussion. The look is contained and basic, reflecting each personality and drawing visitors in.
Planning and design partners:
squid, Zug, Switzerland
The owners of art deco villa Soldanella wished to redesign available living space to accommodate changed family structures.
A new single family residence was created in the separate garden lot (see also detached house at Blumenhofweg, Zug). The existing villa was to be extended and converted into two residential units. Various architects had submitted proposals, none of which, however, was entirely satisfactory.
We suggested retaining the villa’s structure and adding a newly built separate single family house at the West front, the side annexe’s lower roof providing additional exterior space for the villa.
The villa annexe was subsequently realised as a contained, modern cube structure. The plain building creates an exiting contrast to the villa. Its simplicity make for a reserved look, which nevertheless stands well next to the more stately proportions of the older house dating from the turn of the last century. Art deco and modern, early 21st century building achieve a harmonious coexistence.
The new building comprises a four and a half room residential unit. The entrance level floor houses living room, kitchen and dining space with covered patio, separate toilet with natural light and pantry. All rooms face East and benefit from spectacular views over lake and mountains.
The lower floor holds three equitable bedrooms, bathroom/WC and shower room/WC, cellar and heating installation. All rooms have direct access to the garden seating area.
Planning and design partners:
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Structural engineers
bsp Ingenieure, Küssnacht, Switzerland
Electrical planning
A. Hegglin, Menzingen, Switzerland
Images
Franziska Stocker, Edlibach, Switzerland
This detached house is situated between existing buildings at Blumenhofweg in Zug, on what was originally the adjoining garden lot to art deco villa Soldanella at Zugerbergstrasse 32.
The site’s long, narrow shape presented a challenge, compounded by a nearby brook and height restrictions.
Given the height limit, the building was designed to utilise the sloped site to maximum advantage. The North-facing entrance front as well as the West front reveal a two storey structure. The South façade is reduced to one visible floor, and the East side appears “submerged” into the ground. The rust-brown exterior further supports the impression of a house grown from the ground and contrasts strikingly with the green of surrounding gardens.
Entrance is to the staircase landing between floors, with living areas and bedrooms situated on the upper floor. All bedrooms face South. Wet rooms and adjoining rooms face North, the living and dining area faces South-West. All living areas and bedrooms have garden access.
The lower floor houses a separate two-room “granny flat” and cellar rooms. Half a floor underground, the apartment opens to a Japanese-style inner courtyard, preventing a “basement flat” feel.
Planning and design partners:
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Structural engineers
bsp Ingenieure, Küssnacht, Switzerland
Electrical planning
A. Hegglin, Menzingen, Switzerland
Images
Franziska Stocker, Edlibach, Switzerland
This semi-detached house marks the entrance to the newly developed Almigried quarter in Walchwil in the Swiss canton of Zug.
Design was determined by the steep hillside location with its view of Lake Zug. The two self-contained houses combine into one entity, the height-stacked recessed structure making for visual conformity with surrounding terrain.
A further decisive design factor were the Walchwil building and zone regulations, stipulating a “Drittelsordnung” for any attics or projecting side annexes, i.e. they must make up at least one third of the entire structure. Combined with desired interior layout, this gave rise to the two-section building. Floor plans are clearly discernible from outside. The entrance floor in the main building accommodates garage and cellar, in the smaller building section it holds a studio with wetroom accessible from outside. The floor above houses bedrooms, the attic floor comprises living area and kitchen as well as, on the smaller building part, the patio.
Interior design of each house was customised to occupants’ individual needs. Material concepts differ, both however reflect the “raw” exterior look.
Planning and design partners:
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Structural engineers
Scepan AG, Baar, Switzerland
Electrical planning
A. Hegglin, Menzingen, Switzerland
Two-stage study commission for complete service provision under a selective procedure
2nd rank
Central 184-bed hospital (planning option for 220 beds), 5 operating theatres (planning option for 7 ORs) and 6 surgeries (planning option for 12 surgeries) as well as a 60-room nursing centre and a 12-room integrated residential home.
1st Stage: anonymous pre-selection among 13 teams from all over Europe.
2nd Stage: moderated study commission for complete service provision with 4 teams. The complex study commission entails overall planning up to submission of planning application for the new 182-bed canton hospital of the Zug canton and the 136-bed nursing home of the municipality of Baar. As a general contractor team, we performed the following:
Planning of optimised operational procedures in cooperation with experienced hospital planners. State-of-the-art, Minergie-compliant HVACR with alternative energy usage. Distinctive urbanistic architectural design. Cost and delivery guarantee. A structural concept addressing further important aspects. Separation of primary and secondary system ensuring long-term flexibility. The hospital of the 3rd millennium is a space where human and technological factors intersect.
The main entrance lobby with cafeteria and the low-rise buildings meet the human need for safety and security. Straightforward layout of three buildings around a central lobby ensures easy orientation at all times.
Planning and design partners:
General contractor
mobag, Zurich, Switzerland
Project management
i+k Architekten, Zug, Switzerland
Architects
Schärli Architekten, Lucerne, Switzerland
Hospital planner
Martin Koller, Kriens, Switzerland
Smeco AG, Basel, Switzerland
Nursing home expert: Fritz Wagner, Zug, Switzerland
Engineers
Structural engineers and traffic planner: ARP und Partner, Baar, Switzerland
HVAC and I&C Engineer: Kiwi Systemingenieure, Dübendorf, Switzerland
Sanitary engineer: Tib, Lucerne, Switzerland
Electrical engineer: Scherler AG, Zurich, Switzerland
Landscape architects
Balz Hofmann, Zug, Switzerland
Image design
Andreas Hochstrasser, Hünenberg, Switzerland
This 60ies semi-detached house was to be converted into a spacious fully detached single family residence. The brief was to retain the building’s design quality while enhancing individual aspects. Overall interior design, floor plan and staircase access no longer met current requirements, necessitating substantial adjustments.
The building was fitted with additional exterior insulation. All windows were replaced with insulation windows. Some were enlarged, and several new windows were added. The previously white building was painted a dark grey colour, offset by oiled larchwood window frames.
Project specifications entailed demolition of the existing staircase. The new, repositioned staircase defines the new floorplan. Overall, the house now appears brighter and more spacious, with design emphasising lighting and views. The modern exterior aspect carries over into the interior.
Planning and design partners:
Construction management
Naumann und Hotz, Baar, Switzerland
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Structural engineers
Claude Doench, Zug, Switzerland
Electrical planning
A. Hegglin, Menzingen, Switzerland
Created for the Swiss Expo.02, the Cyberhelvetia exhibition pavilion is situated on the Forum of the Biel-Bienne Arteplage, one of the spectacular exhibition venues. Architectural design recalls a traditional Swiss bathing resort, denoting a place of encounter and communication.
The familiar exterior suggests well-known interior use – the visitor is led to expect a traditional public bath of the type found at just this site for over a century. But times have changed. Communication now takes place on many levels and in many ways, sometimes without personal encounter, independent of location or speech. Today, even the communal bath no longer requires water.
Patrons of the Cyberhelvetia pavilion instead submerge themselves in the multi-layered ambience of a virtually enhanced reality. Instead of a swimming pool, they discover a mysterious luminescent glass cube dominating an entire room. Visitors congregate on comfortable lounge beds on and around the glass pool and communicate in various unusual ways.
A quiet lounge area offers space for relaxation and direct human interaction. Two upper floor galleries offer a panoramic view of events. Reality and fiction merge into a single homogenous perceptive experience.
Planning and design partners:
Project management
in&out AG, Zurich, Switzerland
Theme design
3deluxe, Wiesbaden, Germany
Images
Hannes Henz, Zurich, Switzerland
The Sonnhalde site in Hünenberg is idyllically situated on the edge of a forest and benefits from spectacular views over the plain of the Reus river.
The owners had given us carte blanche for our initial design draft. We planned and implemented a single family residence with consistently applied structures and materials.
The basic image of a plain wooden cube on an exposed concrete base informs the entire project. Both exterior and interior materials promote a natural, candid look. The wooden building section features interiors of natural coloured cement plaster wainscoting and wide larchwood floorboards. The concrete section has exposed concrete both on the exterior and interior, floors are made of died hard concrete.
In terms of construction, this project was only the second in Switzerland to be executed in double-leaf concrete in one process step, impacting positively on construction work flows.
The building is Minergie certified and equipped with controlled ventilation as well as a solar water heating system.
Plainly applied materials and positioning of windows to provide carefully planned light ingress and views create a harmonious look for the house.
Planning and design partners:
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Structural engineers
Scepan AG, Baar, Switzerland
Electrical planning
A. Hegglin, Menzingen, Switzerland
Images
Hannes Henz, Zurich, Switzerland
Situated at the North-Western edge of the city of Wil, the house serves as both residence and retail and office space for TV/Hi-Fi store Radio TV Häberli. In addition to creating new retail, office and workshop rooms, the brief for this project also entailed meaningful integration of the existing residential and commercial building. The desired solution was to ensure optimum use of the property while also establishing a dialogue with existing structures.
The concept essentially comprises three sections: The old building, a two-floor cube and a bridging section, connecting to the old building’s ground floor and presenting a street front of display windows under a projecting roof.
The basement houses workshops, the sub-basement a subterranean garage and storage rooms.
A quasi piece of furniture projects into the entrance area, guiding customers inside. The curved, spiral-shaped hollow unit forms a central service point and at the same time links old and new building parts. Increasingly higher rooms leading to the new building create excitement and tension as customers make their way through the retail areas. Light and space, perspective and insight mark each spot. We focused on candour and clarity as important themes informing all aspects, including the choice of materials.
The store design is contained and simple, intended as a stage for presenting products. Products are displayed, unorthodoxly, as room furnishings. Bespoke presentation furniture was designed and manufactured especially for this shop.
Planning and design partners:
Construction management
Roman Kreibich, Wil, Switzerland
Images
Hannes Henz, Zurich, Switzerland
“be authentic, live your identity”. CI Agency squid developed its new offices on a former factory site to match its corporate philosophy.
400 m2 of storage area was converted into space for thinking and acting. “Trust your smile” is to both make clients feel at home and become part of employees’ everyday life.
squid's integrated objective (Swiss quality in design) both requires and facilitates equitable cooperation between architektur retoprevosti and their client. The jointly achieved end result is testament to this cooperation.
Planning and design partners:
squid, Zug, Switzerland
This detached house is the first residential building in Switzerland with the Minergie label, the Swiss certification awarded for sustainable low energy use and enhanced quality of life.
The compact cube shape derives from the ecological concept of a high volume to surface ratio minimising energy loss.
Building design was determined by both ecological and economical considerations, also ensuring that requirements of e2000 Ökobau, the Swiss federal programme for ecological construction, were met.
The rough-sawn larchwood exterior disguises a workshop-prefabricated modern wood post structure. The wooden building was mounted on the cement base in only a few days.
Heating energy is generated by an air-to-air heat pump and distributed via controlled ventilation, minimising ventilation heat loss and at the same time enhancing living quality.
Embodied energy and environmental compatibility of materials were also important interior design factors.
The building attracted considerable discussion in architectural circles and was the subject of a number of newspaper and magazine articles (see list of publications).
The building received the 2nd “Preis des Holzbaupreises” wood construction award of the Pro Holz Arbeitsgemeinschaft in 1999.
Planning and design partners:
HVAC and sanitary systems
Andy Wickart AG, Finstersee, Switzerland
Structural engineers
Scepan AG, Baar, Switzerland
Electrical planning
A. Hegglin, Menzingen, Switzerland
Images
Hannes Henz, Zurich, Switzerland
Contemporary set 1
The table frame has been welded to create a sharp-edged design. Table tops are fastened to the frame with aluminium pins.
Design: Reto Prevosti
Material: Table top in grey, anthracite or dark blue fibre cement board
Frame: Brushed aluminium
Dimensions: 180cm x 80cm, other sizes available on request
Turned down, the metal groove aligns flush with the table top.
Turned up, its edges elevate by 3mm above the table top to make a rechaud for heating chafing dishes.
Design: Reto Prevosti, Fabian Schmid
Material: Stained and oiled solid maple wood (different types of wood and colours on request), brushed chrome steel
Dimensions: 240cm x 89.5cm, other sizes available on request
The seating bench has integrated felt pads fastened with Velcro.
Design: Reto Prevosti, Fabian Schmid
Material: Stained and oiled solid maple wood (different types of wood and colours on request), grey felt
Dimensions: 220cm x 40cm, other sizes
Turned down, the metal groove aligns flush with the table top.
Turned up, its edges elevate by 3mm above the table top to make a rechaud for heating chafing dishes.
The seating benches have integrated felt pads fastened with Velcro.
Design: Reto Prevosti, Fabian Schmid
Table: Stained and oiled solid maple wood (different types of wood and colours on request), brushed chrome steel
Dimensions: 240cm x 89.5cm, other sizes available on request
Bench: Stained and oiled solid maple wood (different types of wood and colours on request), grey felt
Dimensions: 220cm x 40cm, other sizes available on request
The solid wood element contains fire without burning. A chrome steel cover serves to shield heat.
Design: Reto Prevosti
Material: Oiled solid ash wood, brushed chrome steel
Dimensions: 26cm x 20cm
A transparent wind cover transforms an open flame into a contained light source.
Design: Reto Prevosti
Material: Oiled solid ash wood, brushed chrome steel, matted plexiglass
Dimensions: 26cm x 20cm x 21cm
Design: Reto Prevosti
Material: Brushed chrome steel
Dimensions: 60cm x 15cm, other sizes available on request
Contemporary "Raum und Wohnen" 07/11
Official publication of the Expo.02,
featuring the Cyberhelvetia pavilion in Biel, Bern, Switzerland
ISBN 3-85823-947-X
Annual gazette 2003 of the canton of Zug,
featuring the Cyberhelvetia pavilion at Expo.02 in Biel, Bern, Switzerland
ISBN 3-85761-279-7
Architectural compendium featuring the detached house “im Feld”, Blickensdorf, Baar, Zug, Switzerland
ISBN 978-3-8167-4744-4
Cost-effective wood architecture, publication featuring the detached house “im Feld”, Blickensdorf, Baar, Zug, Switzerland
ISBN 3766714910
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