Georgia & Greg’s House 2020

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Location
Yarralumla ACT 2600
    • Housing Type:
    • Standalone House
    • Project Type:
    • Retrofit/addition
    • Builder
    • Torres Constructions
    • Designer
    • TT Architecture PL

About Georgia & Greg’s House

The Extension and refurbishment at 10 Francis represented an opportunity to preserve an important, but fast disappearing, example of 1950’s workers cottages which were originally pervasive through most of the suburb of Yarralumla.

Since the early 80’s, the once-consistent, timber-clad character of the suburb has been radically changed by demolition and redevelopment of the old cottages, may of which dated back to the early 20’s and the establishment of the Canberra Brickworks.

The site has been occupied by its present owners for many years and they have built up a beautiful native garden around the house over time. The owners were typical of many people wanting to alter their accommodation to suit changing needs in later life and found the choice between selling and moving to a new house in an outer suburb, or redeveloping their present house on the site which they loved, very perplexing. Ultimately, they chose to alter their existing house in such a way that the connection to the original suburban character was maintained. In doing the redevelopment, they were also able to address some important shortcomings inherent in the original house and several subsequent extensions which had been executed in later years.

The design sought to:

  • Improve the overall energy efficiency of the house
  • Solve some difficult planning problems which affected how the house could be used
  • Improve the connection between the living spaces and the established garden
  • Avoid any new design work which adversely affected the existing garden
  • Produce a stylistically sympathetic redevelopment which did not dominate the site
  • Make the best possible use of the existing house, while still overcoming its problems
  • Achieve a cost-effective result

The outcome has largely achieved all of the above aims and satisfied the owners. The basic footprint of the house is virtually unchanged, but the additional facilities which they wanted have all been provided by the small amount of upper level addition and creative re-use of the existing space. They have a much more comfortable relationship with their house and the garden which they have appreciated so much.

This house achieved a NatHERS rating of 7.2 stars using NatHERS accredited software.

Find out how the star ratings work on the Nationwide House Energy Rating Scheme (NatHERS) website.

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SUSTAINABLE FEATURES

Years Open
2020
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
      Energy monitoring
    • Passive heating cooling:
    • Cross ventilation
      Deciduous planting around house
      External planting
      Passive solar designed home
      Shading
      Thermal chimney
    • Active heating cooling:
    • Heat pump

    • Active heating cooling:
    • Under-tile electric radiant
    • Water heating:
    • Hot water heat pump
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Low flow shower heads
      Low flow taps
      Drip irrigation
    • Above ground rainwater storage Type:
    • Polypropylene tanks
    • Above ground rainwater storage Size
    • 2 x 5,000L
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
    • Window Protection:
    • Deciduous tree/vegetation
      Drapes/curtains
      Eaves
      External window hoods/surrounds
      Honeycomb blinds
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • Building wrap used to external walls and roof for new construction Re-use of entire existing house - re-purposed to achieve new briefing requirements
    • Recycled and reused materials:
    • Decking
      House - all materials reused
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Under-roof
      Ceiling
      Internal walls
      External walls
      Floor
    • Ceiling Type:
    • Bulk – polyester
    • Ceiling Rating:
    • R5.0
    • Floor Type:
    • Bulk - polyester
    • Floor Rating:
    • R2.0
    • Under Roof Insulation Rating:
    • R1.3
    • Internal Walls Insulation Type:
    • Bulk – polyester
    • Internal Walls Insulation Rating:
    • R2.0
    • External Walls Rating:
    • R2.5
    • External Walls Type:
    • Bulk – polyester
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Energy star rating:
    • 7.2
    • Renewable energy used:
    • Solar PV grid connect
    • Size of PV system:
    • 6kW
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • $475,000
    • Cost estimate of sustainable home/features:
    • Minimal
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 277m2
    • BAL Rating
    • BAL – Low: There is insufficient risk to warrant specific construction requirements
    • Roof
    • Metal (Colorbond)
      Tiles (Concrete)
    • Wall Materials
    • Lightweight construction (timber frame)
      Metal (Colorbond)
      Timber
    • Window and Door Types
    • Awning
      Clerestory windows
      Double glazing
      Double hung
      Low-e, films
      Sliding windows/doors
    • Universal design accessability
    • Adaptive design
    • Universal Design Features
    • 80cm minimum door opening width
      Hobless showers
      Lever handles for doors (no knobs)
      Pull out shelving easily accessible in wheelchairs
      Ramps and path gradients must be less than 20:1
      Shower head on rail for various heights
      Slip resistant flooring
      Tapware to be easily accessed from outside the shower
      Window openings easily accessible
    • Number of bedrooms
    • 3
    • Number of bathrooms
    • 3
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Bird-nesting boxes
      Composting
      Drip irrigation
      Edible garden
      Frog friendly
      Greenhouse
      Local indigenous plants
      Organic
      Native plants
      Water wise plants
    • Waste Reduction Practices:
    • Compost all food scraps
      Recycle
      Repair
      Waste free/reduced construction site
HEALTHY HOME FEATURES
    • Healthy home features
    • Carpet free - tiles/concrete/timber flooring throughout
      Cross flow ventilation
      Low VOC paints/sealer/varnish
      Natural oil sealer/finishes

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