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21 McDougall Avenue Baulkham Hills NSW 2153

BASIX certificate and NatHERS rating

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This home has a NatHERS rating of 7 stars out of 10. Its BASIX certificate commits it to 2 kW of solar panels and a 3,000 litre rainwater tank. Its NatHERS certificate lists insulation in the external walls, ceiling and floor.

Key features

Windows
43 windows and glazed doors: VELUX FS - Fixed Skylight DG 3mm LoE 366 / 8.5mm Argon Gap / 5.36mm Clear La
Wall insulation
R2.7
Roof and ceiling insulation
Ceiling R7, R4, R3, roof Construction Insulation Reflective wrap* Corrugated Iron Timber Frame Bulk, Reflective Side Down, No Air Gap Above R1.3, light colour
Hot water
Gas instantaneous with a performance of 6 stars
Air conditioning and heating
1-phase airconditioning, ducted (living area and bedroom)

BASIX certificate

Energy score
72 (target 72)
Water score
40 (target 40)
Materials score
-89
Heating load
13 MJ/m² a year
Cooling load
17 MJ/m² a year
Bedrooms
5
Conditioned floor area
343.3 m²
Unconditioned floor area
10.9 m²
Site area
696 m²
Roof area
260 m²
Garden area
278 m²
Climate zone
NatHERS climate zone 56
Hot water
Gas instantaneous with a performance of 6 stars
Solar panels
2 kW
Rainwater tank
3,000 litres
Fixtures
Showerheads 3 star, toilets 3 star, kitchen taps 3 star, basin taps 3 star
LED lighting
Yes
Cooktop
Gas
Clothes line
Yes
Maximum glazing
aluminium frames 156.6 m², single glazing 6.2 m², double glazing 150.4 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, waffle pod slab (no added insulation)
  • Floor: above habitable rooms or mezzanine, AAC panel (75 mm); frame: timber - H2 treated softwood (fibreglass batts or roll)
  • Floor: suspended floor above garage, AAC panel (75 mm); frame: timber - H2 treated softwood (fibreglass batts or roll)
  • 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
  • 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 1856885S_02, issued 4 September 2026, from the council's DA documents.

NatHERS certificate

Star rating
7 stars
Rated with
BERS Pro v5.2.6 (3.23)
Rated on
03 Sep 2026
Wall insulation
R2.7
Ceiling insulation
R7, R4, R3
Floor insulation
R2.7, R4
Living room glazing by direction
SW 3 m²
All glazing by direction
NE 51.7 m², SE 34 m², SW 50.8 m², NW 20.1 m²

Roof

  • Construction Insulation Reflective wrap* Corrugated Iron Timber Frame Bulk, Reflective Side Down, No Air Gap Above R1.3, light colour

Window types

  • VEL-011-01 W VELUX FS - Fixed Skylight DG 3mm LoE 366 / 8.5mm Argon Gap / 5.36mm Clear La: U-value 2.6, SHGC 0.24

Window schedule

  • SITTING BRD-150-300-002 W1: 2,057 × 665 mm facing NW
  • SITTING BRD-151-300-002 W1: 2,057 × 2,530 mm facing SW
  • Sidelight: 2,412 × 300 mm facing SW
  • Sidelight: 2,412 × 300 mm facing SW
  • ENTRY GF HALL BRD-125-300-002 W25 Lower: 285 × 2,170 mm facing SW
  • ENTRY GF HALL BRD-125-300-002 W17 Lower: 3,040 × 3,010 mm facing SE
  • ENTRY GF HALL BRD-032-300-003 W18: 2,754 × 1,330 mm facing NE
  • GUEST ENS BRD-113-300-002 W21: 1,200 × 610 mm facing SE
  • GUEST BRD-035-300-002 W19: 2,754 × 2,170 mm facing NE
  • GUEST BRD-113-300-002 W20: 2,057 × 850 mm facing SW
  • MEDIA ROOM BRD-113-300-002 W3: 2,754 × 610 mm facing NW
  • MEDIA ROOM BRD-113-300-002 W4: 2,754 × 610 mm facing NW
  • BUTLERS BRD-125-300-002 W5: 700 × 2,890 mm facing NW
  • LAUNDRY BRD-030-001-001 W6: 2,754 × 850 mm facing NW
  • LAUNDRY BRD-001-001-001 W7: 700 × 1,930 mm facing NE
  • KIT DIN LIV BRD-117-019-001 W8: 2,754 × 1,930 mm facing NE
  • KIT DIN LIV BRD-101-062-001 W9: 2,754 × 5,909 mm facing NE
  • KIT DIN LIV BRD-150-049-001 W10: 2,486 × 1,090 mm facing NE
  • KIT DIN LIV BRD-150-049-001 W11: 2,486 × 1,090 mm facing NE
  • KIT DIN LIV BRD-101-062-001 W16: 2,754 × 5,170 mm facing SW
  • POOJA BRD-150-049-001 W12: 2,486 × 1,810 mm facing NE
  • POOJA BRD-191-039-001 W13: 2,486 × 1,090 mm facing SE
  • POOJA BRD-191-039-001 W14: 2,486 × 1,090 mm facing SE
  • POOJA BRD-165-121-001 W15: 2,754 × 2,290 mm facing SW
  • GARAGE BRD-001-001-001 W2: 900 × 2,290 mm facing NW
  • BED 3 BRD-154-300-002 W27: 1,200 × 2,290 mm facing NW
  • BED 3 BRD-154-300-002 W26: 1,926 × 3,610 mm facing SW
  • UF SHOWER BRD-112-001-001 W28: 600 × 850 mm facing NW
  • BED 2 BRD-154-300-002 W29: 1,200 × 2,290 mm facing NW
  • ENSUITE BRD-113-300-002 W30: 1,200 × 610 mm facing NW
  • ENSUITE BRD-113-300-002 W31: 1,500 × 730 mm facing NW
  • ENSUITE BRD-113-300-002 W32: 1,500 × 730 mm facing NW
  • MASTER BED BRD-113-300-002 W33: 1,800 × 1,090 mm facing NE
  • MASTER BED BRD-113-300-002 W34: 1,800 × 1,090 mm facing NE
  • MASTER BED BRD-035-300-002 W35: 2,420 × 3,610 mm facing SE
  • MASTER BED BRD-125-300-002 W36: 1,800 × 490 mm facing SW
  • UF RUMPUS BRD-125-300-002 W24: 2,057 × 1,450 mm facing SW
  • STAIRWELL BRD-125-300-002 W17 Upper: 2,420 × 3,010 mm facing SE
  • ENTRY VOID BRD-125-097-001 W25 Upper: 2,420 × 2,170 mm facing SW
  • STUDY BRD-150-049-001 W23: 2,057 × 1,320 mm facing SE
  • STUDY BRD-151-049-001 W23: 2,057 × 1,680 mm facing SW
  • BED 4 BRD-113-300-002 W37: 2,420 × 2,170 mm facing NE
  • ENS 4 BRD-113-300-002 W38: 2,057 × 850 mm facing SW

Certificate 0013148846-01, issued 3 September 2026, from the council's DA documents. Verify this certificate

Other certificates for this address

NatHERS certificate, certificate 0013148846, issued 15 July 2026

NatHERS certificate

Star rating
7 stars
Rated with
BERS Pro v5.2.6 (3.23)
Rated on
15 Jul 2026
Wall insulation
R2.7
Ceiling insulation
R7, R4, R3
Floor insulation
R2.7, R4
Living room glazing by direction
SW 3 m²
All glazing by direction
NE 51.7 m², SE 34 m², SW 50.8 m², NW 18.6 m²

Roof

  • Construction Insulation Reflective wrap* Corrugated Iron Timber Frame Bulk, Reflective Side Down, No Air Gap Above R1.3, light colour

Window types

  • VEL-011-01 W VELUX FS - Fixed Skylight DG 3mm LoE 366 / 8.5mm Argon Gap / 5.36mm Clear La: U-value 2.6, SHGC 0.24

Window schedule

  • SITTING BRD-150-300-002 W1: 2,057 × 665 mm facing NW
  • SITTING BRD-151-300-002 W1: 2,057 × 2,530 mm facing SW
  • Sidelight: 2,412 × 300 mm facing SW
  • Sidelight: 2,412 × 300 mm facing SW
  • ENTRY GF HALL BRD-125-300-002 W25 Lower: 285 × 2,170 mm facing SW
  • ENTRY GF HALL BRD-125-300-002 W17 Lower: 3,040 × 3,010 mm facing SE
  • ENTRY GF HALL BRD-032-300-003 W18: 2,754 × 1,330 mm facing NE
  • GUEST ENS BRD-113-300-002 W21: 1,200 × 610 mm facing SE
  • GUEST BRD-035-300-002 W19: 2,754 × 2,170 mm facing NE
  • GUEST BRD-113-300-002 W20: 2,057 × 850 mm facing SW
  • MEDIA ROOM BRD-113-300-002 W3: 2,486 × 370 mm facing NW
  • MEDIA ROOM BRD-113-300-002 W4: 2,486 × 370 mm facing NW
  • BUTLERS BRD-125-300-002 W5: 700 × 2,890 mm facing NW
  • LAUNDRY BRD-030-001-001 W6: 2,754 × 850 mm facing NW
  • LAUNDRY BRD-001-001-001 W7: 700 × 1,930 mm facing NE
  • KIT DIN LIV BRD-117-019-001 W8: 2,754 × 1,930 mm facing NE
  • KIT DIN LIV BRD-101-062-001 W9: 2,754 × 5,909 mm facing NE
  • KIT DIN LIV BRD-150-049-001 W10: 2,486 × 1,090 mm facing NE
  • KIT DIN LIV BRD-150-049-001 W11: 2,486 × 1,090 mm facing NE
  • KIT DIN LIV BRD-101-062-001 W16: 2,754 × 5,170 mm facing SW
  • POOJA BRD-150-049-001 W12: 2,486 × 1,810 mm facing NE
  • POOJA BRD-191-039-001 W13: 2,486 × 1,090 mm facing SE
  • POOJA BRD-191-039-001 W14: 2,486 × 1,090 mm facing SE
  • POOJA BRD-165-121-001 W15: 2,754 × 2,290 mm facing SW
  • GARAGE BRD-001-001-001 W2: 900 × 2,290 mm facing NW
  • BED 3 BRD-154-300-002 W27: 1,200 × 2,290 mm facing NW
  • BED 3 BRD-154-300-002 W26: 1,926 × 3,610 mm facing SW
  • UF SHOWER BRD-112-001-001 W28: 600 × 850 mm facing NW
  • BED 2 BRD-154-300-002 W29: 1,200 × 2,290 mm facing NW
  • ENSUITE BRD-113-300-002 W30: 1,200 × 610 mm facing NW
  • ENSUITE BRD-113-300-002 W31: 1,500 × 730 mm facing NW
  • ENSUITE BRD-113-300-002 W32: 1,500 × 730 mm facing NW
  • MASTER BED BRD-113-300-002 W33: 1,800 × 1,090 mm facing NE
  • MASTER BED BRD-113-300-002 W34: 1,800 × 1,090 mm facing NE
  • MASTER BED BRD-035-300-002 W35: 2,420 × 3,610 mm facing SE
  • MASTER BED BRD-125-300-002 W36: 1,800 × 490 mm facing SW
  • UF RUMPUS BRD-125-300-002 W24: 2,057 × 1,450 mm facing SW
  • STAIRWELL BRD-125-300-002 W17 Upper: 2,420 × 3,010 mm facing SE
  • ENTRY VOID BRD-125-097-001 W25 Upper: 2,420 × 2,170 mm facing SW
  • STUDY BRD-150-049-001 W23: 2,057 × 1,320 mm facing SE
  • STUDY BRD-151-049-001 W23: 2,057 × 1,680 mm facing SW
  • BED 4 BRD-113-300-002 W37: 2,420 × 2,170 mm facing NE
  • ENS 4 BRD-113-300-002 W38: 2,057 × 850 mm facing SW

Certificate 0013148846, issued 15 July 2026, from the council's DA documents. Verify this certificate

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