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The Genesis

Name The Genesis
Address Boulevard de France /Avenue de Norvège
1420 Braine-l'Alleud
Size 6,000
Type Office
Status Developped and in co-ownership with AXA Belgium


The Genesis is a passive building with an above-ground surface area of +/-  6,100m².

It is fully integrated into the Parc de l’Alliance in terms of dimensions, materials, aesthetics and overall quality.

 In line with the permitted dimensions, the building consists of:

  • 1 basement level, serving as car parks, cloakrooms, technical premises and archives;
  • 4 above-ground levels;
  • 1 technical level (roof). 

The two wings of the building are linked by an indoor area/passage.

Each level can be divided into 2, eventually 3, rental units, each with its separate sanitary facilities and technical equipment. 

Parking ratio: 1 parking space per 35m² of above-ground office surface, of which approximately 1/3 open air.


Location & Accessibility

The Parc is easily accessible:

  • from the ring road, just located at the exit of the motorway (nr 24)
  • by busses (TEC local services). Bus stops are at the entrance of the park.
  • by rail (Braine-l’Alleud station; 4 trains/hour– 12 min. to Brussels)

There will be two RER (regional express network) services every 15 minutes on the Parc de l’Alliance stop:

  • the Nivelles-Louvain-la-Neuve line via the stations Brussels Midi/ Central/Nord/Schuman/Luxembourg
  • the Braine-Alliance-Leuven line via Brussels Schuman/Luxembourg and the airport.

Between now and then, local taxi men spontaneously organize a shuttle service between the Braine-l’Alleud station and the site in order to serve the park better.

Brussels airport by car is located at only 20 minutes to the North of the Parc de l’Alliance, just as the Charleroi airport (Brussels South), also at 20 minutes’ distance.​

Issues At Stake

Key Elements


Shared Experience


High sustainability performance: BREEAM standard for office buildings, with score objective of Excellent

  • Objectives: Ew ≤ 53 - K ≤ 25
  • Building with two wings connected by a indoor link
  • Divisibility (580 to 5,900m²), each unit with its sanitary core
  • Modulation: 180 + 90 cm
  • One narrow (1,230 cm) and one wider (1,860 cm) wing, for use as for partitioned and/or open space offices
  • Clear height: ground floor 300 cm; upper floors 270 cm
  • Opening windows (1 per 270 cm frame) with double glazing (Ug = 1.0W / m² K)
  • Exterior shading devices
  • Raised floor, wall-to-wall carpeting and wooden baseboard
  • Gas heating by (air-water) heat pump combined with gas condensing boiler
  • Basic cooling by night ventilation
  • Extra cooling by water-cooled condenser
  • Radiant heating and cooling units
  • Central mechanical ventilation by centralized air treatment group with heat recovery
  • Combined slot diffusers
  • Control system and centralized technical management with remote controlled: heat and cold production, hygienic ventilation, night ventilation, windows opening, shading, lighting and energy, mains water and rainwater metering.
  • Built-in and surface high efficiency lightning (TL T5)
  • Light intensity regulation and absence detection
  • Private high-voltage cabin
  • Emergency low voltage loop with independent energy source
  • Photovoltaic equipment
  • Alarm and warning systems
  • Access control by magnetic card readers and video intercom
  • Energy-efficient lifts


PropertyFloorBuiding A                             Building B
Genesis3​859​ m²​ 688 m²​
2​866​ m²​ 688 m²​
1​867​ m²​  688  m²​
0​581​ m²​             ​     688 m²​ 
Total3.173 m²2.743 m²




Alliance V plans​