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Home report
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21 Byrne Crescent Maroubra NSW 2035
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BASIX certificate and NatHERS rating
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 2,000 litre rainwater tank. Its NatHERS certificate lists insulation in the external walls, ceiling and floor. It beat its BASIX energy target, scoring 75 against 72.
Key features
- Windows
- 29 windows and glazed doors: Aluminium B SG Clear; Aluminium Louvre Window SG 6EVClr; Aluminium Fixed Window SG 6.38CPClr and 3 more types
- Wall insulation
- R1.1, R2.5
- Roof and ceiling insulation
- Ceiling R2.3, R6, roof Waterproofing Membrane No Added Insulation, No air Gap, dark colour
- Hot water
- Electric boosted solar
- Air conditioning and heating
- 1-phase airconditioning, ducted (living area and bedroom)
Built by Beyond Build Constructions.
BASIX certificate
- Energy score
- 75 (target 72)
- Water score
- 40 (target 40)
- Thermal performance
- Pass
- Materials score
- -45
- Heating load
- 17 MJ/m² a year
- Cooling load
- 13 MJ/m² a year
- Bedrooms
- 4
- Conditioned floor area
- 245.3 m²
- Unconditioned floor area
- 21.2 m²
- Site area
- 469 m²
- Roof area
- 189 m²
- Garden area
- 186 m²
- Climate zone
- NatHERS climate zone 56
- Hot water
- Electric boosted solar
- Solar panels
- 2 kW
- Rainwater tank
- 2,000 litres
- Fixtures
- Showerheads 4 star, toilets 4 star, kitchen taps 4 star, basin taps 4 star
- LED lighting
- Yes
- Cooktop
- Induction
- Clothes line
- Yes
- Maximum glazing
- aluminium frames 121.9 m², single glazing 84.1 m², double glazing 37.8 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, conventional slab (polystyrene)
- Floor: suspended floor above open subfloor, concrete - suspended; frame: no frame (polystyrene)
- Floor: above habitable rooms or mezzanine, concrete - suspended; frame: no frame (no added insulation)
- Floor: suspended floor above garage, concrete - suspended; frame: no frame (polystyrene)
- Garage floor: concrete slab on ground (polystyrene)
- External wall: cavity brick; frame: no frame (polystyrene)
- External wall: framed (fibre cement sheet or boards); frame: timber - H2 treated softwood (fibreglass batts or roll+ foil/sarking)
- External garage wall: cavity brick; frame: no frame (polystyrene)
- Internal wall: plasterboard; frame: timber - H2 treated softwood (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 1800648S_05, issued 10 February 2026, from the council's DA documents.
NatHERS certificate
- Star rating
- 7 stars
- Rated with
- BERS Pro v5.2.4 (3.23)
- Rated on
- 20 Jun 2025
- Wall insulation
- R1.1, R2.5
- Ceiling insulation
- R2.3, R6
- Floor insulation
- R1.1, R2.5, R1.4, R2.3
- LED downlights
- 42
- Living room glazing by direction
- N 1.5 m², E 37.8 m², S 5 m², W 1.6 m²
- All glazing by direction
- N 18 m², E 53.6 m², S 18.6 m², W 27.1 m²
Roof
- Waterproofing Membrane No Added Insulation, No air Gap, dark colour
- Corrugated Iron Timber Frame Bulk, Reflective Side Down, No Air Gap Above R1.3, dark colour
Window types
- ALM-002-01 A Aluminium B SG Clear: U-value 6.7, SHGC 0.7
- VAN-004-003 Aluminium Louvre Window SG 6EVClr: U-value 4.7, SHGC 0.49
- BRD-041-011 Aluminium Fixed Window SG 6.38CPClr: U-value 4.2, SHGC 0.6
- BRD-163-012 Aluminium Hinged Door SG 6.38CPClr: U-value 4.4, SHGC 0.47
- BRD-153-040 Aluminium Fixed Window DG LB Clr 4/10/4: U-value 2.7, SHGC 0.53
- BRD-035-029 Aluminium Sliding Door DG LB Clr 4/10/4: U-value 2.7, SHGC 0.51
Window schedule
- Garage, window ALM-002-01 A: 2,400 × 4,000 mm facing S
- Entry, window VAN-004-003: 2,700 × 800 mm facing W
- Bedroom 3, window VAN-004-003: 2,700 × 800 mm facing E
- Bedroom 3, window BRD-041-011: 2,700 × 1,800 mm facing E
- Bedroom 3, window VAN-004-003: 2,700 × 800 mm facing W
- Entry Mud, window BRD-163-012: 2,700 × 920 mm facing S
- Entry Mud, window BRD-163-012: 2,700 × 920 mm facing N
- Entry Mud, window BRD-153-040: 2,700 × 1,800 mm facing N
- Rumpus, window BRD-035-029: 2,700 × 5,800 mm facing E
- Rumpus, window BRD-041-011: 400 × 5,020 mm facing S
- Bedroom 4, window BRD-041-011: 2,700 × 1,800 mm facing E
- Bedroom 4, window VAN-004-003: 2,700 × 800 mm facing E
- Shower, window VAN-004-003: 2,700 × 800 mm facing W
- Shower, window BRD-041-011: 2,700 × 1,000 mm facing W
- Shower, window BRD-041-011: 2,700 × 1,000 mm facing N
- Shower, window VAN-004-003: 2,700 × 800 mm facing N
- Upper Kitchen, window BRD-035-029: 2,700 × 8,200 mm facing E
- Upper Kitchen, window BRD-153-040: 600 × 5,020 mm facing S
- Upper Kitchen, window BRD-041-011: 1,800 × 900 mm facing W
- Upper Kitchen, window BRD-041-011: 1,800 × 850 mm facing N
- Ensuite, window VAN-004-003: 800 × 1,920 mm facing S
- Primary Bed, window VAN-004-003: 2,700 × 800 mm facing W
- Primary Bed, window BRD-035-029: 2,700 × 3,500 mm facing W
- Bedroom 2, window BRD-041-011: 1,800 × 1,000 mm facing E
- Bedroom 2, window VAN-004-003: 1,800 × 800 mm facing W
- Bedroom 2, window BRD-041-011: 1,800 × 1,800 mm facing W
- Bedroom 2, window BRD-041-011: 1,800 × 1,000 mm facing N
- Upper Shower, window VAN-004-003: 800 × 1,650 mm facing N
- Upper WC, window VAN-004-003: 800 × 1,450 mm facing N
Certificate 0011997053, issued 20 June 2025, from the council's DA documents. Verify this certificate
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