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Home report
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172 Constellation Ave - Box Hill
BASIX certificate and NatHERS rating
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This home's BASIX certificate commits it to 1 kW of solar panels and a 3,000 litre rainwater tank. It beat its BASIX water target, scoring 41 against 40.
Key features
- Windows
- Up to aluminium frames 96.8 m², single glazing 4.8 m², double glazing 92 m²
- Wall insulation
- Fibreglass batts or roll+ foil/sarking; Fibreglass batts or roll
- Roof and ceiling insulation
- Ceiling: fibreglass batts or roll; roof: foil backed blanket
- Hot water
- Gas instantaneous with a performance of 5 stars
- Air conditioning and heating
- 1-phase airconditioning, ducted (living area and bedroom)
BASIX certificate
- Energy score
- 70 (target 70)
- Water score
- 41 (target 40)
- Thermal performance
- Pass
- Materials score
- -70
- Heating load
- 30 MJ/m² a year
- Cooling load
- 30 MJ/m² a year
- Bedrooms
- 5
- Conditioned floor area
- 248.6 m²
- Unconditioned floor area
- 16.9 m²
- Site area
- 339 m²
- Roof area
- 234 m²
- Garden area
- 75 m²
- Climate zone
- NatHERS climate zone 28
- Hot water
- Gas instantaneous with a performance of 5 stars
- Solar panels
- 1 kW
- Rainwater tank
- 3,000 litres
- Fixtures
- Showerheads 4 star, toilets 3 star, kitchen taps 4 star, basin taps 3 star
- LED lighting
- Yes
- Cooktop
- Gas
- Clothes line
- Yes
- Maximum glazing
- aluminium frames 96.8 m², single glazing 4.8 m², double glazing 92 m²
Heating
- Living area: 1-phase airconditioning - ducted; Energy rating: 3.5 star (average zone)
- Bedroom: 1-phase airconditioning - ducted; Energy rating: 3.5 star (average zone)
Cooling
- Living area: 1-phase airconditioning - ducted; Energy rating: 3.5 star (average zone)
- Bedroom: 1-phase airconditioning - ducted; Energy rating: 3.5 star (average zone)
Construction and insulation
- Floor: concrete slab on ground, waffle pod slab (polystyrene)
- Floor: suspended floor above open subfloor, treated softwood; frame: timber - H2 treated softwood (fibreglass batts or roll)
- Floor: above habitable rooms or mezzanine, treated softwood; frame: timber - H2 treated softwood (not specified)
- Floor: suspended floor above garage, treated softwood; frame: timber - H2 treated softwood (fibreglass batts or roll)
- Garage floor: concrete slab on ground, waffle pod slab (polystyrene)
- External wall: brick veneer; frame: timber - H2 treated softwood (fibreglass batts or roll+ foil/sarking)
- External wall: external insulated façade system (EIFS); frame: timber - H2 treated softwood (fibreglass batts or roll)
- External garage wall: brick veneer; frame: timber - H2 treated softwood (fibreglass batts or roll+ foil/sarking)
- Internal wall: plasterboard; frame: timber - H2 treated softwood (fibreglass batts or roll)
- Ceiling and roof: flat ceiling / pitched roof, framed - metal roof, timber - H2 treated softwood (ceiling: fibreglass batts or roll; roof: foil backed blanket.)
Certificate 1829694S, issued 21 January 2026, from the council's DA documents.
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