Green Design Studio 2024

House Notes – Green Design Studio

The 42m2 ‘Green Design Studio’ was designed as a backyard office for the owners’ architectural practice, and as a testing ground for design and material ideas. Designed to Passive House principles, it is highly airtight and well insulated, and rates 8.7 Stars. Flexibility for it to be used as a residence was built into the design.

Brief:

Small flexible space to accommodate an office.
Inbuilt future flexibility for residential use.
Making use of a constrained site.
Bushfire resistant – BAL 19.
Rainwater collection.
Site rehabilitation with local stormwater pond, Native vegetation.
Net zero carbon.


Energy:

Passive House.
5.8kW solar power.
Net export of power exceeds net import.
Heat pump hot water.
Permeable and airtight, highly insulated envelope.
8.7 stars.
Heat recovery ventilation.


Materials:

All low embodied energy and low VOC materials.
Cement sheet & obliqua cladding.
Spotted gum decking.
Triple glazed timber-aluminium composite tilt/turn windows.
Joinery: FSC certified ply, paperock, recycled timber.

Experts explore: Uta Green on using her new studio as a testing ground

Sustainability Features

Years Open
2024
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
      Energy monitoring
    • Passive heating cooling:
    • Cross ventilation
      Heat recovery ventilation system
      Passive solar designed home
      Shading
      Thermal mass
    • Active heating cooling:
    • Heat exchange ventilation system
    • Water heating:
    • Hot water heat pump
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Stormwater management
      Low flow shower heads
    • Average water consumption per day:
    • 80
    • Above ground rainwater storage Type:
    • tank and wetland
    • Above ground rainwater storage Size
    • 5000l tank
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
      Skylight
    • Electric Vehicle Type
    • mg
    • Window Protection:
    • Blinds
      Eaves
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • internal thermal mass
    • Recycled and reused materials:
    • Aggregate
      Benchtops
      Excavated earth
      Paving
      Timber
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Ceiling
    • Ceiling Type:
    • Bulk – glass wool
    • Ceiling Rating:
    • R7
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Energy star rating:
    • 8.6
    • Renewable energy used:
    • Solar PV grid connect
    • Size of PV system:
    • 5.85kW
COSTS AND COST SAVINGS
    • Estimate of annual savings:
    • 2000
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 42m²
    • BAL Rating
    • BAL – 29: Increasing levels of ember attack and ignition of debris with a heat flux of up to 29kW/m2
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Lightweight construction (timber frame)
      Timber
    • Window and Door Types
    • Skylights
      Tilt and turn
      Triple glazing
      180 degree opening doors
    • Universal design accessability
    • Adaptive design
    • Universal Design Features
    • 80cm minimum door opening width
      Flush thresholds (no lip) to all external doors
      Hobless showers
      Lever handles for doors (no knobs)
      Shower head on rail for various heights
      Slip resistant flooring
    • Number of bedrooms
    • 1
    • Number of bathrooms
    • 1
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • wetland
    • Garden / Outdoors
    • Bee hotels/friendly
      Chickens
      Composting
      Frog friendly
      Local indigenous plants
      Orchard
      Native plants
      Swales
      Water wise plants

    • Waste Reduction Practices:
    • Book exchange/library
      Compost all food scraps
      Make jams/conserves
      Pickle and preserve food
      Recycle
      Repair
      Take own containers to the supermarket and for take away food
      Tool exchange/library
      Swap with friends and neighbours
      Waste free/reduced construction site
HEALTHY HOME FEATURES
    • Healthy home features
    • Airtight house design
      Automated ventilation system
      Cabinet design to minimise dust collection
      Carpet free - tiles/concrete/timber flooring throughout
      Chemical free cleaning products used
      Cross flow ventilation
      Formaldehyde free cabinets
      Heat recovery ventilation (HRV)
      Indoor plants for air filtration
      Lime render/wash
      Natural light and ventilation
      VOC free paints/sealer/varnish
Location
South Hobart TAS 7000
    • Housing Type:
    • Display Home
    • Project Type:
    • New Build
    • Builder
    • Calic Building & Carpentry
    • Designer
    • Green Design Architects

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