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    Perlita Passive house

    Renovation
    • Building Type : Isolated or semi-detached house
    • Construction Year : 2017
    • Delivery year : 2017
    • Address 1 - street : 4324 Perlita Avenue CA 90039 LOS ANGELES, USA
    • Climate zone : [Csa] Interior Mediterranean - Mild with dry, hot summer.
    • Net Floor Area : 197 m2
    • Construction/refurbishment cost : 540 000 €
    • Number of Dwelling : 1 Dwelling
    • Cost/m2 : 2741.12 €/m2

    Certifications :

    • Primary energy need :
      81.3 kWhpe/m2.year
      (Calculation method : Other )
    Energy consumption
    Economical buildingBuilding
    < 50A
    A
    51 à 90B
    B
    91 à 150C
    C
    151 à 230D
    D
    231 à 330E
    E
    331 à 450F
    F
    > 450G
    G
    Energy-intensive building

    The goal of the Perlita Project is to show a new path for low energy consumption buildings in Los Angeles and in Southern California through realistic, affordable and reproducible solutions.

    The main focus was the energy efficiency. We followed the PassiveHouse standard path, which is the leading international low energy building standard with more than 85,000 buildingsaround the globe in all climate zones, to deliver ahigh level of comfort with very low energy consumption.

    This strategy allowed us to design a site Net Zero Energy, fossil fuel free house, with only 12 solar panels; 4 panels were added to supply all the required electricity for the annual consumption of an electric car used for most of the home owners’ local commute. A storage battery allows to shave peak hours demand.

    Of course, the project was designed to be water conscious with only low water consumption fixtures, adrought tolerant landscaping and arain garden. Black water and grey water pipes were also separated to easily use the grey water for the yard.

    After the first 12 months of operation, the house is one of the most energy efficient building in Los Angeles with a verified site EUIbelow 39 kWh/m²/yr, which is the maximum total energy consumption allowed for a Passive House. Both certification from the Passive House Institute and from the Living BuildingChallenge are in progress.

    This project should be the beginning of a new construction paradigm; more than 300 people already toured the house. 

    See more details about this project

     https://elrondburrell.com/blog/passivhaus-goldilocks/

    Photo credit

    Video: https://www.buildwithrise.com/
    Pictures: Xavier Gaucher

    Contractor

    Construction Manager

    Stakeholders

    Contracting method

    Build and sell construction

    If you had to do it again?

    For our next project, we will make sure to use Passive House solutions which have been validated by experienced Passive House crews; We will also make sure our architect has experience in Passive House design and therefore for the Passive House principles to be integrated as well as possible into the building design; Lastly we will make sure to have every construction details and MEP systems to be 100% design before starting the construction phase, because decisions we made on site were not as efficient and cost effective that the one we would have thought about before the construction phase.

    Building users opinion

    Great comfort, indoor air quality and noise reduction from outside noise; And all that without any energy bill!

    Energy consumption

    • 81,30 kWhpe/m2.year
    • 296,00 kWhpe/m2.year

      • Other

      House: 7784 kWh for 12 months
      Electric Vehicle Charger: 1567 kWh for 12 months

    • 300,00 kWhpe/m2.year

    More information

    We finished the first year with $230 energy credit - Energy bills available upon request

    Real final energy consumption

      39,00 kWhfe/m2.year

    Systems

      • Heat pump
      • Heat pump
      • VRV Syst. (Variable refrigerant Volume)
      • Nocturnal ventilation
      • Double flow
      • Solar photovoltaic
      • Heat pump
    • 10 071,00 %

      • 13.5 kWh Storage battery - 12 Solar Panels for the house consumption; 4 for the Electric Vehicle.

    Urban environment

      The house in located in the Atwater Village district of Los Angeles, a fully developed area.

    • 711,00 m2
    • 0,24 %
    • 350,00

    Product

      Windows & Doors

      Zola

      tel: +1 303 578 0001

       https://www.zolawindows.com

      Second œuvre / Menuiseries extérieures

      A complete range of high efficiency & airtight doors, windows, sliding glass doors

      NFRC and PHI rated

    Construction and exploitation costs

    • 540 000 €

    Reasons for participating in the competition(s)

    • ​comfort with very low energy consumption: 39 kWh/m²/yr
    • only 12 solar panels
    • black water and grey water pipes separated

    Building candidate in the category

    Energy & Temperate Climates

    Energy & Temperate Climates

    Users' Choice

    Users' Choice

    Green Solutions Awards 2019 - Buildings
    PDF

    Author of the page

  • X Xavier Gaucher
    Xavier Gaucher

    Principal

    • Other case studies

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    Contest

    Green Solutions Awards 2019 - Buildings