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37 Wirraway Boulevard Badagarang NSW 2540

BASIX certificate and NatHERS rating

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This home has a NatHERS rating of 7.3 stars out of 10. Its BASIX certificate commits it to 6.54 kW of solar panels and a 3,000 litre rainwater tank. Its NatHERS certificate lists insulation in the external walls, ceiling and floor. It beat its BASIX energy and water targets, scoring 100 against 69 for energy and 42 against 40 for water.

Key features

Windows
13 windows and glazed doors: Aluminium B DG Air Fill Clear-Clear; Timber A SG Clear
Wall insulation
R2.5
Roof and ceiling insulation
Ceiling R5, roof Corrugated Iron Timber Frame Foil, Gap Above, Reflective Side Down, Anti-glare Up, light colour
Hot water
Electric heat pump with a performance of 15 to 20 STCs or better
Air conditioning and heating
1-phase airconditioning, ducted (living area and bedroom)

Built by White Sands.

BASIX certificate

Energy score
100 (target 69)
Water score
42 (target 40)
Thermal performance
Pass
Materials score
-21
Heating load
45 MJ/m² a year
Cooling load
12 MJ/m² a year
Bedrooms
3
Conditioned floor area
118.5 m²
Unconditioned floor area
6.5 m²
Site area
463 m²
Roof area
229 m²
Garden area
241 m²
Climate zone
NatHERS climate zone 18
Hot water
Electric heat pump with a performance of 15 to 20 STCs or better
Solar panels
6.54 kW
Rainwater tank
3,000 litres
Fixtures
Showerheads 4 star, toilets 4 star, kitchen taps 5 star, basin taps 4 star
LED lighting
Yes
Cooktop
Induction
Clothes line
Yes
Maximum glazing
aluminium frames 23.3 m², timber frames 0.3 m², single glazing 0.3 m², double glazing 23.3 m²

Heating

  • Living area: 1-phase airconditioning - ducted; Energy rating: EER 2.5 - 3.0
  • Bedroom: 1-phase airconditioning - ducted; Energy rating: EER 2.5 - 3.0

Cooling

  • Living area: 1-phase airconditioning - ducted; Energy rating: EER 2.5 - 3.0
  • Bedroom: 1-phase airconditioning - ducted; Energy rating: EER 2.5 - 3.0

Construction and insulation

  • Floor: concrete slab on ground, conventional slab (no added insulation)
  • Garage floor: concrete slab on ground (no added insulation)
  • External wall: brick veneer; frame: timber - H2 treated softwood (fibreglass batts or roll)
  • External wall: framed (fibre cement sheet or boards); frame: timber - H2 treated softwood (fibreglass batts or roll)
  • External garage wall: brick veneer; frame: timber - H2 treated softwood (no added insulation)
  • External garage wall: cavity brick; frame: no frame (no added insulation)
  • Internal wall: plasterboard; frame: timber - H2 treated softwood (no added insulation)
  • Ceiling and roof: flat ceiling / pitched roof, framed - metal roof, timber - H2 treated softwood (ceiling: fibreglass batts or roll; roof: foil/sarking.)

Certificate 1815037S_02, issued 29 September 2025, from the council's DA documents.

NatHERS certificate

Star rating
7.3 stars
Rated with
BERS Pro v5.2.3 (3.23)
Rated on
29 Sep 2025
Wall insulation
R2.5
Ceiling insulation
R5
Floor insulation
R2.5, R0.9
LED downlights
29
Living room glazing by direction
E 4.3 m², S 4.6 m²
All glazing by direction
N 6.4 m², E 6.2 m², S 4.6 m², W 6.4 m²

Roof

  • Corrugated Iron Timber Frame Foil, Gap Above, Reflective Side Down, Anti-glare Up, light colour

Window types

  • ALM-004-01 A Aluminium B DG Air Fill Clear-Clear: U-value 4.8, SHGC 0.59
  • TIM-001-01 W Timber A SG Clear: U-value 5.4, SHGC 0.56

Window schedule

  • Garage 1, window ALM-004-01 A: 2,140 × 900 mm facing E
  • Foyer/study, window TIM-001-01 W: 1,600 × 160 mm facing N
  • Foyer/study, window ALM-004-01 A: 1,800 × 850 mm facing N
  • Foyer/study, window ALM-004-01 A: 1,800 × 850 mm facing N
  • Kitchen/Living1, window ALM-004-01 A: 1,200 × 850 mm facing E
  • Kitchen/Living1, window ALM-004-01 A: 1,800 × 1,810 mm facing E
  • Kitchen/Living1, window ALM-004-01 A: 2,100 × 2,170 mm facing S
  • Bath, window ALM-004-01 A: 860 × 1,210 mm facing W
  • Bed 3, window ALM-004-01 A: 1,200 × 1,810 mm facing W
  • Bed 2, window ALM-004-01 A: 1,200 × 1,810 mm facing W
  • Ens, window ALM-004-01 A: 860 × 1,210 mm facing W
  • Bed 1, window ALM-004-01 A: 1,800 × 850 mm facing N
  • Bed 1, window ALM-004-01 A: 1,800 × 850 mm facing N

Certificate 0012255196, issued 29 September 2025, from the council's DA documents. Verify this certificate

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