Engawa House 2023

House Notes – Engawa House

Engawa (Japanese verandah) House is a renovation and addition to a 100-year-old house in Ivanhoe. The project was conducted within the mindset that the most sustainable approach was to try and do only as much as necessary. Thus, it was imperative to improve the quality of the house, rather than demolish it. Ultimately, only 15m2 became a true ‘addition’ to the house. Everything else is simply a maximisation of spatial efficiency within the pre-existing footprint. Where work was required, the project used sustainably sourced timber in its cladding and locally crafted windows, doors, and bathtub.

The clients, a family of three, wanted to update their kitchen, laundry and bathroom that were a result of a previous renovation in the 80’s. There was also an inefficient use of already limited space and poor thermal performance typical of a 100-year-old cottage-style house. Located in a densified battle-axe subdivision with a 6.5m rear covenant setback, it was integral to be forensic in the re-organisation of the house to incorporate the clients’ desire for more leisure space within an efficient footprint; to effectively make do with what was available. Any addition to the house had to work hard and honest decisions had to be made to avoid any further unnecessary modifications.

A compact addition of 15m2 helped unlocking potential for vastly improved amenity and the inside outside connection. 50m2 within existing footprint was adapted and retrofitted to support the outcome. Opting for ‘nooks’ over rooms, and the overlapping of circulation with amenable functions (dining, euro laundry etc) allowed a very compact footprint.

The approach to sustainability was practical and affordable with the goal of improving the thermal performance, comfort, and amenity of the house and further extend the longevity of the home.

Engawa House photographed by Peter Bennetts

Sustainability Features

Years Open
2023
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
    • Passive heating cooling:
    • Cross ventilation
      External planting
      Passive solar designed home
      Shading
      Thermal chimney
    • Active heating cooling:
    • Ceiling fans
      Heat pump
      Hydronic
      Split system airconditioner
    • Water heating:
    • Hot water heat pump
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Low flow shower heads
      Low flow taps
    • Above ground rainwater storage Type:
    • Slimline water tank
    • Above ground rainwater storage Size
    • 3000L
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
      Skylight
    • Window Protection:
    • Adjustable Shading
      Awnings (external)
      Blinds
      Deciduous tree/vegetation
      Eaves
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • Cold water diverters to Bathrooms and Laundry The approach was to retain / work with the existing house / layout. Reuse was prioritised (adjust and refinish flooring, keep most of existing layout, embrace mismatching components). Demolition / replacement was kept to a minimum.
    • Recycled and reused materials:
    • Cladding
      Doors
      Floorboards
      Paving
      Timber
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Under-roof
      Ceiling
      Floor
    • Ceiling Type:
    • Bulk – polyester
    • Ceiling Rating:
    • R6.0
    • Floor Type:
    • Reflective foil
    • Floor Rating:
    • Kingspan Air-cell Permifloor
    • Under Roof Insulation Type:
    • Reflective foil
    • Under Roof Insulation Rating:
    • Kingspan Air-cell glareshield XL
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • No
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • Total floor area 193m2 ( incl. renovation 50m2 and addition 15m2)
    • BAL Rating
    • BAL – Low: There is insufficient risk to warrant specific construction requirements
    • Roof
    • Metal (Zincalume)
      Tiles (Clay)
    • Wall Materials
    • Timber
    • Window and Door Types
    • Casement
      Double glazing
      Double hung
      Skylights
      Sliding windows/doors
    • Number of bedrooms
    • 3
    • Number of bathrooms
    • 2
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Native plants
    • Waste Reduction Practices:
    • Compost all food scraps
      Recycle
HEALTHY HOME FEATURES
    • Healthy home features
    • Cross flow ventilation
      Formaldehyde free cabinets
      Low VOC paints/sealer/varnish
      Natural light and ventilation
      VOC free paints/sealer/varnish
Location
Ivanhoe VIC 3079
    • Housing Type:
    • Standalone House
    • Project Type:
    • Retrofit/addition
    • Builder
    • Scale Constructions
    • Designer
    • Inbetween Architecture

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