CHIPPERFIELD RESIDENCES - Top 9.3

THE PROJECT

In the heart of Hietzing, on a gently sloping site between Schönbrunn and the Lainzer Tiergarten, stand three city villas designed by Sir David Chipperfield as his first and only residential project in Vienna. The Pritzker Prize laureate has worked here with the elements that define the site – the slope, the mature trees and the light. Three detached buildings rather than a perimeter block development, each with its own staircase and lift, interspersed with intensively landscaped open spaces.

The curtain wall façade consists of sandblasted, precast architectural concrete elements with a sandstone finish; the surrounding cornices between the storeys emphasise the horizontal lines whilst also providing shade for the deep loggias and terraces. At ground floor level, the material changes to Rauris natural stone. Behind the floor-to-ceiling aluminium sliding panels from swiss fine line, this understated aesthetic continues: exposed concrete ceilings, white mineral paint, oak parquet flooring, and porcelain stoneware with a stone or concrete finish. Materials that do not vie for attention, but instead allow the view of the greenery to take centre stage.

A total of 20 owner-occupied flats have been created, with usable living space ranging from around 39 to 330 m² – from compact designer flats and garden residences to the unique penthouses on the top floor. Each unit has at least one private outdoor area.

The building services are particularly noteworthy. The entire complex is heated, cooled and supplied with hot water via a brine/water heat pump, fed by 24 deep boreholes drilled 100 metres into the site. Heat is distributed throughout via underfloor heating. Cooling is provided via concrete core activation: water-filled pipes run through the exposed concrete ceilings, regulating the temperature across the entire floor area – more comfortable and quieter than any split-system air-conditioning, and in summer mode largely passive, drawing directly from the deep borehole. In addition, there is a controlled domestic ventilation system with heat and humidity recovery; the supply air is fed in invisibly via aluminium floor grilles.

Each flat is equipped with a KNX bus system and a Loxone smart home control system: temperature, lighting, shading and switchable sockets can be controlled via a control panel in the flat or via an app. Beneath the development lies a continuous underground car park with a total charging capacity of 88 kW; eight parking spaces are equipped with a load management system for electric vehicle charging.

HIGHLIGHTS

• Architecture: David Chipperfield Architects
• Sustainable energy concept: Brine/water heat pump comprising 24 ground probes, each 100 metres deep, for heating, cooling and hot water
• Cooling via concrete core activation (ceiling cooling) | Exposed concrete ceilings on the underside
• Controlled domestic ventilation with heat and humidity recovery
• Energy-efficient underfloor heating | supplied by the brine/water heat pump
• Highly insulated aluminium windows with triple glazing – floor-to-ceiling sliding, fixed and pivoting elements | external sun protection
• KNX bus system per residential unit | Loxone smart home control system with control panel: temperature (heating and cooling), lighting, automated shading and switchable sockets controllable via app
• Exclusive oak parquet flooring
• Bathrooms with porcelain stoneware | tiled shower area | floor-level walk-in shower
• Floors on balconies, terraces and roof terraces in Rauris natural stone
• Apartment entrance doors meeting resistance class 3 | Pre-wiring for an alarm system fitted in all flats
• Letter and parcel system with digital noticeboard and accompanying app (door calls from anywhere, parcel status on your smartphone, property management information)
• Spacious underground car park running the full length of the building
• Extensively landscaped outdoor areas | Flat roofs with intensive greening as green-roof systems

SERVICE CHARGES

For the sake of clarity, we note that, unless otherwise stated in the offer, a commission is payable upon successful completion of the sale, in accordance with the rates set out in the Estate Agents’ Regulations BGBI. 262 and 297/1996 – that is, 3 per cent of the purchase price plus 20 per cent VAT. This obligation to pay commission also applies if you pass on the information provided to you to third parties. There is a close financial relationship with the seller. We would like to point out that we are acting as dual agents. The drafting of the contract and escrow arrangements are handled by the law firm of Dr Rumpf, Freyung 6, 1010 Vienna. The costs amount to 1.5 per cent of the purchase price plus 20 per cent VAT, as well as out-of-pocket expenses and certification fees.

Top 9.3

155.11 m² of open space. That is more than most flats have in living space – and it is the reason why Top 9.3 is called ‘The Penthouse’. A 112.47 m² roof terrace clad in Rauris natural stone wraps around the recessed structure, whilst in front of it a 42.64 m² balcony spans the full width of the building. Two open spaces with two different orientations – one for the morning sun, one for the evening above the treetops of Hietzing.

A swimming pool measuring approximately 2×6 metres is planned for the terrace, whilst a pergola defines the outdoor area – offering both seclusion and a sense of space on the same level, with no neighbours in sight. The rest is Vienna – treetops, rooftops and, in the distance, the city.

Inside, the kitchen is the architectural showpiece. Measuring 17.75 m², it is situated in a conservatory, glazed on three sides, and is additionally heated and cooled via underfloor convectors and fan coils – you can practically cook outdoors, all year round. Adjoining this is a 39.13 m² living room. The 16.17 m² bedroom has its own walk-in wardrobe and an 11.41 m² bathroom adjacent to it; the entrance area measures 17.96 m² – spacious in a loft-like style, with just two rooms across 108.98 m².

One of three penthouses in the development and the last one still available!

Please note that there is a close family or business relationship between the estate agent and the third party on whose behalf the property is being marketed.

The estate agent is acting as a dual agent.