Suburban Treehouse 2021

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House Notes – Suburban Treehouse

Our late 1930’s bungalow has been a well loved home, but it was time to sort out the thermally inefficient old sleep-out that housed the kitchen/dining room where we spent a lot of time.

The sleep-out is gone and replaced with a highly efficient passive house build, providing a new kitchen/dining room and a 4th bedroom, taking advantage of the sloping block to nestle behind the existing house and share the established tree’s shading in summer.

The new part of the house is accessed through a stairwell linking the new with the old, leading upstairs to the bedroom and downstairs to the kitchen/dining area. Space has been used cleverly to minimise the footprint of the house while still giving a sense of a larger space. The footprint is very similar to that of the sleep-out and outside laundry the extension has replaced.

Using passive house principles has allowed this less than ideal site, with a tall building next door partly blocking the northern sun, to achieve excellent sustainable benefits without relying on thermal mass for heating or cooling. Window location provides cross ventilation through both the new and old parts of the house, allowing the evening sea breeze to cool the house when needed, and the air-tight build prevents any unwanted drafts. By retaining the lovely old house we have the best of both worlds all in one house, that sits well in its environment and is a practical family home.

Photography – Peter Ellery Photography and Owner

SUSTAINABILITY FEATURES

Years Open
2020
2021
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient appliances
    • Passive heating cooling:
    • Cross ventilation
      Deciduous planting around house
      Heat recovery ventilation system
    • Active heating cooling:
    • Ceiling fans
      Heat exchange ventilation system
      Split system airconditioner
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
    • Window Protection:
    • Deciduous tree/vegetation
      Drapes/curtains
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Ceiling
      Internal walls
      External walls
    • Ceiling Type:
    • Bulk – glass wool
    • Ceiling Rating:
    • R6.0
    • Internal Walls Insulation Type:
    • Bulk – natural wool
    • Internal Walls Insulation Rating:
    • R2.5
    • External Walls Rating:
    • R3.0
    • External Walls Type:
    • Bulk – glass wool
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • No
    • Renewable energy used:
    • Solar PV grid connect
HOUSE DESIGN SPECIFICATIONS
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Insulated panels or blocks
      Lightweight construction (timber frame)
      Metal (Colorbond)
    • Window and Door Types
    • Double glazing
      Low-e, films
      Sliding windows/doors
      Tilt and turn
    • Number of bedrooms
    • 4
    • Number of bathrooms
    • 2
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Composting
      Edible garden
      Native plants
      Water wise plants
      Worm farm
HEALTHY HOME FEATURES
    • Healthy home features
    • Airtight house design
      Carpet free - tiles/concrete/timber flooring throughout
      Cross flow ventilation
      Heat recovery ventilation (HRV)
      Low VOC paints/sealer/varnish
      Natural light and ventilation
Location
Kensington WA 6151
    • Housing Type:
    • Standalone House
    • Project Type:
    • Retrofit/addition
    • Builder
    • I-Smart Building Group
    • Designer
    • Ecohabit

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