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73-75 Compton Park Road Berrima NSW 2577

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BASIX certificate and NatHERS rating

This home's BASIX certificate commits it to 13 kW of solar panels and a 90,000 litre rainwater tank. It beat its BASIX energy and water targets, scoring 91 against 63 for energy and 64 against 40 for water.

Key features

Windows
Up to aluminium frames 391.6 m², timber frames 21.6 m², double glazing 413.2 m²
Wall insulation
All external walls none
Roof and ceiling insulation
Ceiling: fibreglass batts or roll; roof: foil backed blanket
Hot water
Electric heat pump with a performance of 15 to 20 STCs or better
Air conditioning and heating
3-phase airconditioning (living area and bedroom)

BASIX certificate

Energy score
91 (target 63)
Water score
64 (target 40)
Thermal performance
Pass
Materials score
-100
Heating load
110 MJ/m² a year
Cooling load
12 MJ/m² a year
Bedrooms
6
Conditioned floor area
1,128.1 m²
Unconditioned floor area
46.8 m²
Site area
403,000 m²
Roof area
1,395 m²
Garden area
1,000 m²
Climate zone
NatHERS climate zone 24
Hot water
Electric heat pump with a performance of 15 to 20 STCs or better
Solar panels
13 kW
Rainwater tank
90,000 litres
Fixtures
Showerheads 4 star, toilets 4 star, kitchen taps 4 star, basin taps 4 star
LED lighting
Yes
Cooktop
Gas
Clothes line
Yes
Maximum glazing
aluminium frames 391.6 m², timber frames 21.6 m², double glazing 413.2 m²

Heating

  • Living area: 3-phase airconditioning; Energy rating: EER 3.0 - 3.5
  • Bedroom: 3-phase airconditioning; Energy rating: EER 3.0 - 3.5

Cooling

  • Living area: 3-phase airconditioning; Energy rating: EER 3.0 - 3.5
  • Bedroom: 3-phase airconditioning; Energy rating: EER 3.0 - 3.5

Construction and insulation

  • Floor: concrete slab on ground, conventional slab (foil-foam composite board)
  • Floor: above habitable rooms or mezzanine, concrete - suspended; frame: timber - H2 treated softwood (no added insulation)
  • External wall: hempcrete blocks; frame: no frame. all external walls none
  • Internal wall: hempcrete; frame: no frame (no added insulation)
  • Ceiling and roof: flat ceiling / flat roof, framed - metal roof, timber - H2 treated softwood (ceiling: fibreglass batts or roll; roof: foil backed blanket.)

Certificate 1838653S, issued 23 March 2026, from the council's DA documents.

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