Open Field Coliving 2024

House Notes – Open Field Coliving

Open Field Coliving will be a functional homestead for 10 to 12 people. The design intentions are to:

1. Allow multiple families and individuals to live together, with a balance of communal facilities and private space
2. Integrate with the homestead and permaculture systems of the property, with easy access to the gardens, orchards, compost and water systems
3. Support a net zero transition: using almost no energy to heat and cool, and avoiding high embodied energy materials such as concrete and polystyrene during construction
4. Be resilient to the effects of climate change: heatwaves, droughts, floods, and resource scarcity
5. Create a calm and earthy sanctuary for its occupants, with rich natural, recycled and local materials
6. Provide universal accessibility to make the house safer and easier for people with disabilities or injuries, older people, and
families with young children

The design is a simple, compact, hempcrete home with a big passive-solar roof. The high point on the north eave allows for
deep solar penetration from March to September and total solar exclusion from October to February.
The design intentionally forgoes ‘features’ such as dramatic roof shapes and unnecessary changes in the perimeter walls.

Rather, the simple form has the benefits of:

– Being cost effective to build
– Durability, with less chance of bulk water ingress around the roof and windows
– A more compact thermal envelope
– Resistance to ember attack in bushfires
– Simple, gravity fed, roofwater collection

These savings allows more money to be spent on the builder’s craftsmanship, and high quality materials such as hempcrete, straw,
and recycled hardwood.

Due to unforeseen circumstances this home is no longer opening in-person. If you have purchased tickets we will be in touch with your refund.

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
      Passive solar designed home
      Shading
      Thermal mass
    • Active heating cooling:
    • Ceiling fans
      Heat exchange ventilation system
      Split system airconditioner
    • Water heating:
    • Hot water heat pump
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Blackwater system
      Compost toilet
      Low flow shower heads
      Low flow taps
      Drip irrigation
    • Average water consumption per day:
    • 80L
    • Above ground rainwater storage Type:
    • Zincalume Rainwater Tanks
    • Above ground rainwater storage Size
    • 200,000L
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • The home is on a raised timber subfloor with steel Surefoot footings. This allowed us to eliminate the need for cO2 intensive concrete slabs and underfloor insulation The hemp was sourced from Victorian growers, and the ceilings in the main living areas are straw panels grown and manufactured in Horsham. The light fittings are ceramics made in Melbourne by Robert Gordon and the flooring and external posts are all salvage timber from Timber Zoo in Geelong.
    • Recycled and reused materials:
    • Benchtops
      Floorboards
      Paving
      Timber
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Ceiling
      Internal walls
      External walls
      Floor
    • Ceiling Type:
    • Bulk – glass wool
    • Ceiling Rating:
    • R8
    • Floor Type:
    • Bulk - polyester
    • Floor Rating:
    • R5.0
    • Internal Walls Insulation Type:
    • Bulk – glass wool
    • Internal Walls Insulation Rating:
    • R2.5
    • External Walls Rating:
    • R4.0
    • External Walls Type:
    • Hempcrete
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Average Daily Energy Consumption:
    • 602
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • $1,700,000
    • Cost estimate of sustainable home/features:
    • $1,700,000
    • Estimate of annual savings:
    • $7,800
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 320
    • BAL Rating
    • BAL – 19: Increasing levels of ember attack and ignition of debris with a heat flux of up to 19kW/m2
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Hempcrete
    • Window and Door Types
    • Casement
      Double glazing
      Sliding windows/doors
    • Universal design accessability
    • Adaptive design
      Multi-generational
      Universal access
      Wheelchair accessible
    • Universal Design Features
    • 100cm minimum door opening width
      Flush thresholds (no lip) to all external doors
      Kitchen bench/table for wheelchairs to access (75-85cm high)
      Lever handles for doors (no knobs)
      Minimum 110cm wide hallways
      Ramps and path gradients must be less than 20:1
      Semi recessed basins
      Shower head on rail for various heights
      Slip resistant flooring
      Space around toilets for ease of access in wheelchairs
      Strong fittings like towel rails that can be used as hand rails
      Tapware to be easily accessed from outside the shower
      Various heights for benches in kitchens
    • Number of bedrooms
    • 8
    • Number of bathrooms
    • 2
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Bee keeping
      Community vegetable garden
      Composting
      Drip irrigation
      Edible garden
      Frog friendly
      Local indigenous plants
      Organic
      Permaculture
      Native plants
      Swales
      Water wise plants
      Wicking beds
    • Waste Reduction Practices:
    • 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
      Cross flow ventilation
      Heat recovery ventilation (HRV)
      Lime render/wash
      Low VOC paints/sealer/varnish
      Natural light and ventilation
      Natural oil sealer/finishes
      VOC free paints/sealer/varnish
      Wax based sealer/finish
Location
Muckleford VIC 3451
    • Housing Type:
    • Colivng House
    • Project Type:
    • New Build
    • Builder
    • Sanford Build Co
    • Designer
    • Ironbark Eco Design

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