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50 Lyell Street Mittagong NSW 2575

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BASIX certificate and NatHERS rating

This home's BASIX certificate commits it to 8 kW of solar panels and a 5,000 litre rainwater tank. It beat its BASIX energy target, scoring 96 against 63.

Key features

Windows
Up to aluminium frames 24.6 m², single glazing 4.9 m², double glazing 19.8 m²
Wall insulation
All external walls fibreglass batts or roll
Roof and ceiling insulation
Ceiling: fibreglass batts or roll; roof: foil backed blanket
Hot water
Electric heat pump with a performance of 26 to 30 STCs or better
Air conditioning and heating
1-phase airconditioning, ducted (living area and bedroom)

BASIX certificate

Energy score
96 (target 63)
Water score
40 (target 40)
Materials score
13
Heating load
110 MJ/m² a year
Cooling load
12 MJ/m² a year
Bedrooms
3
Conditioned floor area
115.7 m²
Unconditioned floor area
14.9 m²
Site area
1,012 m²
Roof area
231 m²
Garden area
168 m²
Climate zone
NatHERS climate zone 24
Hot water
Electric heat pump with a performance of 26 to 30 STCs or better
Solar panels
8 kW
Rainwater tank
5,000 litres
Fixtures
Showerheads 5 star, toilets 3 star, kitchen taps 6 star, basin taps 6 star
LED lighting
Yes
Cooktop
Gas
Clothes line
Yes
Maximum glazing
aluminium frames 24.6 m², single glazing 4.9 m², double glazing 19.8 m²

Heating

  • Living area: 1-phase airconditioning - ducted; Energy rating: EER 3.5 - 4.0
  • Bedroom: 1-phase airconditioning - ducted; Energy rating: EER 3.5 - 4.0

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: suspended floor above enclosed subfloor, particle board; frame: timber - H2 treated softwood (fibreglass batts or roll)
  • Garage floor: concrete slab on ground, waffle pod slab (no added insulation)
  • External wall: framed (solid or reconstituted timber weatherboard); frame: timber - H2 treated softwood. all external walls fibreglass batts or roll
  • Internal wall: plasterboard; frame: timber - H2 treated softwood (no added insulation)
  • 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 1827314S_03, issued 15 May 2026, from the council's DA documents.

Other certificates for this address

BASIX certificate, certificate 1827314S_02, issued 18 February 2026

BASIX certificate

Energy score
97 (target 63)
Water score
43 (target 40)
Thermal performance
Pass
Materials score
27
Heating load
109 MJ/m² a year
Cooling load
13 MJ/m² a year
Bedrooms
4
Conditioned floor area
136 m²
Unconditioned floor area
3.4 m²
Site area
1,012 m²
Roof area
149 m²
Garden area
500 m²
Climate zone
NatHERS climate zone 24
Hot water
Electric heat pump with a performance of 26 to 30 STCs or better
Solar panels
8 kW
Rainwater tank
5,000 litres
Fixtures
Showerheads 4 star, toilets 3 star, kitchen taps 6 star, basin taps 6 star
LED lighting
Yes
Cooktop
Gas
Clothes line
Yes
Maximum glazing
aluminium frames 25.2 m², single glazing 1.1 m², double glazing 24.1 m²

Heating

  • Living area: 1-phase airconditioning - ducted; Energy rating: EER 3.5 - 4.0
  • Bedroom: 1-phase airconditioning - ducted; Energy rating: EER 3.5 - 4.0

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: suspended floor above enclosed subfloor, particle board; frame: timber - H2 treated softwood (fibreglass batts or roll)
  • Garage floor: concrete slab on ground, waffle pod slab (no added insulation)
  • External wall: framed (solid or reconstituted timber weatherboard); frame: timber - H2 treated softwood. all external walls fibreglass batts or roll
  • Internal wall: plasterboard; frame: timber - H2 treated softwood (no added insulation)
  • 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 1827314S_02, issued 18 February 2026, from the council's DA documents.

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