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286 Wattle Tree Road Holgate NSW 2250

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BASIX certificate and NatHERS rating

This home's BASIX certificate commits it to 3 kW of solar panels and a 27,000 litre rainwater tank. It beat its BASIX energy and water targets, scoring 85 against 70 for energy and 82 against 40 for water.

Key features

Windows
Up to aluminium frames 42 m², single glazing 42 m²
Wall insulation
All external walls fibreglass batts or roll+ foil/sarking
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
85 (target 70)
Water score
82 (target 40)
Thermal performance
Pass
Materials score
-48
Heating load
39 MJ/m² a year
Cooling load
11 MJ/m² a year
Bedrooms
3
Conditioned floor area
145 m²
Unconditioned floor area
17.8 m²
Site area
11,680 m²
Roof area
323 m²
Garden area
250 m²
Climate zone
NatHERS climate zone 15
Hot water
Gas instantaneous with a performance of 5 stars
Solar panels
3 kW
Rainwater tank
27,000 litres
Fixtures
Showerheads 3 star, toilets 4 star, kitchen taps 3 star, basin taps 3 star
LED lighting
Yes
Cooktop
Gas
Clothes line
Yes
Maximum glazing
aluminium frames 42 m², single glazing 42 m²

Heating

  • Living area: 1-phase airconditioning - ducted; Energy rating: EER 3.0 - 3.5
  • Bedroom: 1-phase airconditioning - ducted; Energy rating: EER 3.0 - 3.5

Cooling

  • Living area: 1-phase airconditioning - ducted; Energy rating: EER 3.0 - 3.5
  • Bedroom: 1-phase airconditioning - ducted; Energy rating: EER 3.0 - 3.5

Construction and insulation

  • Floor: concrete slab on ground, waffle pod slab (no added insulation)
  • Garage floor: concrete slab on ground, waffle pod slab (no added insulation)
  • External wall: brick veneer; frame: timber - H2 treated softwood. all external walls fibreglass batts or roll+ foil/sarking
  • External garage wall: brick veneer; frame: timber - H2 treated softwood (no added insulation)
  • Internal wall: plasterboard; frame: timber - H2 treated softwood (fibreglass batts or roll)
  • 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 backed blanket.)

Certificate 1797138S, issued 27 May 2025, from the council's DA documents.

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