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Type of competition: Open, two-stage, international

Language: English

Location: Village of Lozen, near Sofia, Bulgaria

Eligibility: Open to architects, designers, students, individuals and teams, etc.

First Place 1500 BGN

Design Challenge:

Design a house in the village of Lozen, located in the suburbs of Sofia that is economical and has extremely low energy consumption. Setbacks for the front and back must be 5 m (16 ft) sides 3 m. (10 ft). The design must have a treated floor area of 120-180 м². (1,292 – 1,938 sq. ft) - It must include a living room, dining room, kitchen, two bedrooms (min.), one full bath, one half bath, or two baths. The project teams may choose the orientation of the house. The use of sustainable concepts, including innovative technologies and methods that lead to additional savings of energy and natural recourses, pollution neutralization concepts, use of local and recycled materials are beneficial for your design. The design proposal should strive to achieve the Passive House Standard as follows:

  • Annual heating and cooling requirement ≤ 15 kWh/m2/year
  • Primary energy ≤ 120 kWh/m2/year
  • Airtight building shell ≤ 0.6 ACH @ 50 pascal pressure, (well-detailed construction)
  • Thermal bridge free construction ≤ 0.01 W/mK

Provided Materials (they can be requested by completing the online registration form):

  • AutoCAD file with the building site with setbacks, located in the village of Lozen, near Sofia.
    The Cad file is not associated with any particular site. It is created to satisfy the competition program only. The North arrow has not been located on the CAD file. The contestants are allowed to choose the orientation of the plot.
  • PHPP climate data
  • Passive House Metrics sheet – Excel file

Submission requirements:

  • Completed online registration form
  • Design submittals: Entries must be taken through completion of schematic design.
  • A narrative in English of between 1000 and 1250 words describing the idea and the concept of the design.
  • Plans, building section, and elevations (2D)
  • Typical vertical section/detail showing the building materials
  • 3D models
  • 2 Presentation Boards, A1 poster size 300 dpi (594х841мм) / (24”x36”) - digital file.
  • - Building Metric sheet – Excel file. PHPP calculations are not required with the submission.
  • Diagrams explaining the design approach (optional)
  • Video, explaining the design approach (optional)

First Stage - Selection of the top 10 projects finalists, chosen as follows:

  • Top three projects selected by the public vote
  • Top seven projects, selected by the teams, participating in the competition. The project teams are required to vote for one project, excluding their own. The vote needs to be submitted via email no later than April 6th, 2012. If any of the individual participants and teams fail to email their choice for favorite project, they will not continue in the next stage of the competition.
    The seven projects with the most votes will be included in the top ten finalists.
  • Top eight (8) projects, selected by each one of the judges of the competition. These projects will be in addition to the projects, selected by the contestants and by the public vote.

Second Stage – Selection of first place and four honorable mentions.

Time table:

  • Official start of the design competition and the start of registration for contestants - January 16, 2012
  • Registration deadline is open to competition deadline March 16, 2012
  • Deadline for project submission - March 16, 2012 before 11:59 pm EET – Eastern European Time
  • Deadline for public vote, and vote from the teams participating in the contest and the judges to determine the eighteen finalists - from March 19, 2012 till April 6, 2012
  • Announcing the eighteen projects (finalists) - April 9, 2012
  • Official announcement of the decision of the jury: Project Winner and four honorable mentions - April 16, 2012

Judging Criteria

The top ten projects / finalists will be judged on a point system (from 1 to 10 points) per judge on the following criteria:

  1. Quality of Design
  2. Originality of Thinking
  3. Application of the Passive House Design Standard
  4. Affordability
  5. Calculations, Material Choices and Details (from Excel sheet)
  6. Sustainable Concepts - possible ideas relating to use of innovative technology and methods that lead to additional savings of energy and natural recourses, pollution neutralization concepts, use of local, and recycled materials. The judges should review the projects on the competition website and should submit their evaluations and brief comments for the strong and weak points of each of the ten projects by April 14, 2012

Images from Lozen