Tloperi 2024

House Notes – Tloperi

In 2010 we bought a rundown, 80-acre dairy farm with a vision of one day retiring to a house that was Off-Grid and needed no heating and cooling, that was entirely electric and solar powered and where we could grow our own food. After 4 years of careful planning and research and two years in the building stage, this vision became a reality two years ago when we moved here permanently. The house, which is volume built, off plan and heavily modified, consists of our house with an attached fully self-contained cottage for our adult daughter who has Down syndrome and lives with us. Building like this cut the cost of the build by just over half over the cost of engaging our own architect and builder. The 43kW hr lithium battery power system and 13 kW solar system provides power and gives us autonomy, no sun, for up to three days. We have 250,000 litres of rainwater in numerous tanks to maximise water collection which provides all our water needs. 75,000 locally indigenous plants have been planted on the property (and are still being planted!) and we have seen a massive increase in wildlife that we love sharing our lives with plus we are also able to harvest bushfoods. We have put in fruit trees, and numerous wicking garden beds provide all our vegetables. No water is wasted! Chickens provide us with eggs, fertiliser and are weed recyclers. Garden tools such as chainsaw and brushcutter are battery operated, we have carefully chosen products such as induction stoves in both kitchens, Sanden heat pump HWS and the power and rainwater tank systems to have a 20 year life and there are numerous other adaptive technologies installed on the property to conserve and use power and water wisely.

Sustainability Features

Years Open
2024
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
      Energy monitoring
      Smart home features
    • Passive heating cooling:
    • Cross ventilation
      Deciduous planting around house
      Passive solar designed home
      Shading
      Thermal mass
    • Active heating cooling:
    • Ceiling fans
    • Water heating:
    • Hot water heat pump
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Stormwater management
      Low flow shower heads
      Low flow taps
    • Above ground rainwater storage Type:
    • Rainwater tanks Total 250,000 litres.
    • Above ground rainwater storage Size
    • 22,500 litres
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
    • Window Protection:
    • Blinds
      Deciduous tree/vegetation
      Drapes/curtains
      Eaves

    • Window Protection:
    • Slatted pergola on north to deflect summer sun.
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • Hebel panels on the North. Polished concrete floor using 60% recycled aggregate. True North South orientation on the short axis for cross ventilation. Daytime living areas predominantly on north, bathrooms ,bedrooms predominantly on south. Separated living spaces so we can close off areas of the house.
    • Recycled and reused materials:
    • Aggregate
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Under-roof
      Ceiling
      Internal walls
      External walls
    • Ceiling Type:
    • Bulk – glass wool
    • Ceiling Rating:
    • R 6
    • Under Roof Insulation Type:
    • Reflective foil, sisalation, insulation batts and fire sarking.
    • Under Roof Insulation Rating:
    • R 6
    • Internal Walls Insulation Type:
    • Bulk – glass wool
    • Internal Walls Insulation Rating:
    • R 1.5
    • External Walls Rating:
    • R 2.5 plus Hebel panels on north facing walls
    • External Walls Type:
    • Bulk – glass wool
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Renewable energy used:
    • Energy storage/battery
      Solar PV off-grid
    • Size of PV system:
    • 43 kW Hr Lithium. 13 kW solar
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • $420,000
    • Cost estimate of sustainable home/features:
    • $320,000 plus $100,000 for rainwater and power. Completely off grid.
    • Estimate of annual savings:
    • We have no power, no water, no sewage and no gas bills. 20 + year life on electrical system.
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 320m2 combined cottage and house.
    • BAL Rating
    • BAL – 12.5: Ember attack with heat up to 12.5kW/m2
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Aerated concrete
      Hebel blocks
      Metal (Colorbond)

    • Wall Materials
    • Primeline Chamfer cement panels
    • Window and Door Types
    • Clerestory windows
      Double glazing
      Louvre windows
      Low-e, films
      Sliding windows/doors
    • Universal design accessability
    • Adaptive design
      Multi-generational
      Universal access
      Wheelchair accessible
    • Universal Design Features
    • 80cm minimum door opening width
      100cm minimum door opening width
      Lever handles for doors (no knobs)
      Minimum 110cm wide hallways
      No stairs/steps
      Ramps and path gradients must be less than 20:1
      Rocker style light switches
    • Number of bedrooms
    • 5
    • Number of bathrooms
    • 3
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Vegetable gardens with wicking beds. Integrated weed management
    • Garden / Outdoors
    • Bee hotels/friendly
      Bird-nesting boxes
      Chickens
      Composting
      Edible garden
      Frog friendly
      Local indigenous plants
      Orchard
      Organic
      Native plants
      Swales
      Water wise plants
      Wicking beds

    • Waste Reduction Practices:
    • Compost all food scraps
      Make jams/conserves
      Pickle and preserve food
      Recycle
      Repair
      Swap with friends and neighbours
      Waste free/reduced construction site
HEALTHY HOME FEATURES
    • Healthy home features
    • Carpet free - tiles/concrete/timber flooring throughout
      Chemical free cleaning products used
      Cross flow ventilation
      Formaldehyde free cabinets
      Indoor plants for air filtration
      Low VOC paints/sealer/varnish
      Natural fibre furnishings
      Natural light and ventilation
      VOC free paints/sealer/varnish
Location
Hindmarsh Island SA 5214
    • Housing Type:
    • Standalone house with attached cottage.
    • Project Type:
    • New Build
    • Builder
    • Gallery Living
    • Designer
    • Own design. Off plan volume built, heavily modified by us.

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