Djildjit 2019

Address
White Gum Valley WA 6162
HOUSE DETAILS
    • Housing Type:
    • 2-apartment development
    • Open House Style
    • Open House – No booking required
    • Open Hours
    • 10am – 4pm
OPENING WITH SUPPORT OF
    • Open with support of
    • Solar Dwellings
    • Builder
    • Craig Bailey, Ecovision Builder

LAND SELECTION
Landcorp’s WGV estate was chosen for its sustainability features (including One Planet Living international endorsement), proximity to Fremantle centre, the amenity of the surrounding suburb as well as Booyeembara Park across the road. Purchased in January 2016, Lot 4 WGV (274sqm) was our preferred lot in the estate from an environmental design perspective. It was chosen for its east-west orientation, unobstructed solar access and clear view north up Beazley Way towards the large trees and POS along Stevens St.

DESIGN
Richard Hammond has a long history of achievement in affordable and sustainable housing design. His assistant in this design was graduate architect David Robinson. Passive solar design was a strong focus in the design approach. The development consists of two strata-titled apartments on a single lot 274sqm, with shared amenities including: roof terrace, double garage, laundry, outdoor shower/toilet and gardens. The design complies with the WGV Design Guidelines as well as City of Fremantle sustainability policy. NatHERS energy efficiency rating completed by True North was 7.7 for apartment A and 7.3 for apartment B, or 7.5 overall. Life cycle assessment by eTool gave it the top Platinum rating with total emissions expected 823 kgCO2e per year per occupant = a savings of 80%, equivalent to 6,735 trees planted.

CONSTRUCTION
A traditional Nyoongar smoking ceremony by Marie Taylor was held on the lot prior to construction. First round tender $680,000; second round $580,000, third round $480,000 from Ecovision accepted. Ecovision Craig Bailey runs his practice based on 7 sustainability principles. During construction several design modifications were implemented including roof change from SIPS to studframe and addition of external insulated cladding to south wall expecting the NatHERS rating to improve by 0.7. Construction time was 12 months as per contract completing in February 2018.

MATERIALS
Ground floor walls are stabilised rammed earth (SRE) comprised of 50/50 recycled C&D waste and limestone. Floors are Holcim Ecomax concrete with lower embodied energy. Upper floor walls are 90-mm insulated stud frame with custom orb Colourbond cladding. Roof is Colourbond with R4.0 insulation + R1.5 Anticon. Double glazed windows throughout. In Perth, over 40 tonnes of waste per house is generated during construction with over 15,000 homes constructed each year. Much of this waste could be recycled back into new constructions, as demonstrated here.

ENERGY SYSTEMS
Grid electricity consumption reduced by over 50% with energy efficient design and appliances as well as a shared 5kW solar PV system driving the HVAC and thermal mass as a ‘thermal battery’. Electrochemical battery may be installed at a future date if necessary. Electric car and bike charging can occur in the garage later or at the SHAC charging station next door.

WATER SYSTEMS
While mains water from Water Corp is connected, much water is supplied from shared alternative systems. Toilet flushing and clothes washing is by rainwater, surface irrigation water from the WGV community bore, and subsurface irrigation from greywater. It reduces mains water consumption by over 50%.

DHW, HVAC SYSTEMS
Hot water, space heating and cooling is provided by a 3-in-1 heat pump shared system via hydronic tubes in the ground floor slab and a single FCU in each apartment upstairs. Efficiency of space heating and cooling will be enhanced by attention to sealing around doors, windows and frames, checked by blower door testing. Operation of the integrated solar heat pump system with smart controls will allow the house to perform as a novel “thermal battery” with energy savings expected to be greater than 20%.

Chat to a member of the Australian Electric Vehicle Association (AEVA) about EV’s they will have their Tesla Model S on display for SHD between 10am – 12pm. 

 

This house achieved a NatHERS rating of 7.5 stars using NatHERS accredited software (AccuRate). Find out how the star ratings work on the Nationwide House Energy Rating Scheme (NatHERS) website.

 

This home is supported by

SUSTAINABLE FEATURES

Years Open
2019
SUSTAINABLE FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
      Energy monitoring
      Smart home features
    • Passive heating cooling:
    • Passive solar designed home
    • Active heating cooling:
    • Heat pump
      Hydronic
      Split system airconditioner
      Solar hydronic
    • Recycled and reused materials:
    • Aggregate
      Appliances
      Concrete
      Timber
      Other
    • Recycled and reused materials:
    • Recycled demolition aggregate in concrete floors and rammed earth walls. Recycled jarrah for timber decking.
    • Water heating:
    • Hot water heat pump
    • Water harvesting and saving features:
    • Underground rainwater storage
      Grey water system
      Stormwater management
      Low flow shower heads
      Low flow taps
      Hot water recirculation
      Drip irrigation
    • Average water consumption per day:
    • 30L per person per day
    • Underground rainwater storage type:
    • GARANTIA Regenwasser Flachtank Li-Lo 5000 L / 1320,9 gal.
    • Underground rainwater storage Size:
    • 5000L
    • Storage connected to
    • Garden
      Toilet
      Laundry
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
      Skylight
    • Electric Vehicle?
    • No
    • Electric Vehicles Welcome
    • Yes
    • Garden / Outdoors
    • Community vegetable garden
      Composting
      Drip irrigation
      Edible garden
      Green roof
      Organic
      Permaculture
      Native plants
      Water wise plants
    • Healthy home features
    • Airtight house design
      Chemical free cleaning products used
      Cross flow ventilation
      Indoor plants for air filtration
      Natural fibre furnishings
      Natural light and ventilation
      Natural oil sealer/finishes
      No carpets
    • Waste Reduction Practices practices:
    • Compost all food scraps
      Plastic free household
      Recycle
      Repair
      Swap with friends and neighbours
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • $500,000 construction + $40,000 landscaping + $345,000 land for both apartments
    • Cost estimate of sustainable home/features:
    • Fully integrated
    • Estimate of annual savings:
    • $2,000 for both apartments
ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Energy star rating:
    • 7.5 Stars
    • Renewable energy used:
    • Solar PV grid connect
    • Size of PV system:
    • 5.5kW
    • Average Daily Energy Consumption:
    • 2kW
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Under-roof
      Internal walls
      External walls
      Floor
    • Floor Type:
    • Bulk - polystyrene board
    • Window Protection:
    • Adjustable Shading
      Awnings (external)
      Blinds
      Deciduous tree/vegetation
      Drapes/curtains
    • Under Roof Insulation Type:
    • Bulk – polystyrene board
    • Internal Walls Insulation Type:
    • Bulk – glass wool
    • External Walls Type:
    • Bulk – glass wool
HOUSE DESIGN
    • BAL Rating
    • N/A
    • House Size
    • 60m2
    • Number of bedrooms
    • 1
    • Number of bathrooms
    • 1
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Lightweight construction (timber frame)
      Rammed earth
    • Window and Door Types
    • Clerestory windows
      Double glazing
      Low-e, films
      Sliding windows/doors
      Skylights
    • Universal design accessability
    • Multi-generational