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Home report
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11 Rowena Road Narraweena NSW 2099
BASIX certificate and NatHERS rating
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This home has a NatHERS rating of 7.9 stars out of 10. Its BASIX certificate commits it to 6.6 kW of solar panels and a 3,000 litre rainwater tank. Its NatHERS certificate lists insulation in the external walls, ceiling and floor. It beat its BASIX energy and water targets, scoring 100 against 72 for energy and 41 against 40 for water.
Key features
- Windows
- 27 windows and glazed doors
- Wall insulation
- R2.5
- Roof and ceiling insulation
- Ceiling R5, R2.5, roof Corrugated Iron Timber Frame No Insulation, Only an Air Gap, medium colour
- Hot water
- Electric heat pump with a performance of 15 to 20 STCs or better
- Air conditioning and heating
- 1-phase airconditioning, ducted (living area and bedroom)
BASIX certificate
- Energy score
- 100 (target 72)
- Water score
- 41 (target 40)
- Thermal performance
- Pass
- Materials score
- -47
- Heating load
- 6 MJ/m² a year
- Cooling load
- 16 MJ/m² a year
- Bedrooms
- 4
- Conditioned floor area
- 219.3 m²
- Unconditioned floor area
- 20.2 m²
- Site area
- 729 m²
- Roof area
- 164 m²
- Garden area
- 367 m²
- Climate zone
- NatHERS climate zone 56
- Hot water
- Electric heat pump with a performance of 15 to 20 STCs or better
- Solar panels
- 6.6 kW
- Rainwater tank
- 3,000 litres
- Fixtures
- Showerheads 3 star, toilets 4 star, kitchen taps 4 star, basin taps 4 star
- LED lighting
- Yes
- Clothes line
- Yes
- Maximum glazing
- uPVC frames 71.9 m², double glazing 71.9 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 (not specified)
- Floor: suspended floor above open subfloor, AAC panel (75 mm); frame: timber - H2 treated softwood (no added insulation)
- Floor: above habitable rooms or mezzanine, AAC panel (75 mm); frame: timber - H2 treated softwood (no added insulation)
- Floor: suspended floor above garage, AAC panel (75 mm); frame: timber - H2 treated softwood (no added insulation)
- Garage floor: concrete slab on ground, waffle pod slab (not specified)
- External wall: concrete block/plasterboard; frame: timber - H2 treated softwood (fibreglass batts or roll)
- External wall: brick veneer; frame: timber - H2 treated softwood (fibreglass batts or roll)
- External garage wall: concrete block/plasterboard; frame: timber - H2 treated softwood (not specified)
- Internal wall: plasterboard; frame: timber - H2 treated softwood (not specified)
- Ceiling and roof: flat ceiling / pitched roof, framed - metal roof, timber - H2 treated softwood (ceiling: fibreglass batts or roll; roof: foil backed blanket.)
Certificate 1816190S_03, issued 17 November 2025, from the council's DA documents.
NatHERS certificate
- Star rating
- 7.9 stars
- Rated with
- BERS Pro v5.2.6 (3.23)
- Rated on
- 17 Nov 2025
- Wall insulation
- R2.5
- Ceiling insulation
- R5, R2.5
- Floor insulation
- R2.5
- Living room glazing by direction
- N 7.8 m², E 17.8 m², S 2 m², W 2.2 m²
- All glazing by direction
- N 20.1 m², E 33.7 m², S 6 m², W 12.2 m²
Roof
- Corrugated Iron Timber Frame No Insulation, Only an Air Gap, medium colour
- Corrugated Iron Timber Frame Bulk, Reflective Side Down, No Air Gap Above R1.3, medium colour
Window schedule
- Garage ALU-012-005-001 W02: 1,000 × 2,170 mm facing N
- Garage ALU-045-001-002 D02: 2,100 × 1,800 mm facing N
- ENTRY BF ALU-016-005-001 D01: 2,100 × 900 mm facing E
- ENTRY BF ALU-012-005-001 D01: 2,100 × 515 mm facing E
- ENTRY BF ALU-012-005-001 W01: 860 × 1,210 mm facing W
- LDRY ALU-008-005-001 W04: 1,900 × 850 mm facing W
- GUEST BED ALU-008-005-001 W05: 1,400 × 1,690 mm facing W
- BATH GF ALU-008-005-001 W03: 1,200 × 850 mm facing S
- LOUNGE ALU-008-005-001 W11: 2,100 × 2,650 mm facing E
- LOUNGE ALU-016-005-001 D04: 2,200 × 900 mm facing S
- HALL ALU-016-005-001 D03: 2,300 × 1,000 mm facing S
- Kitchen/Living ALU-012-005-001 W06 LOWER: 860 × 1,210 mm facing W
- Kitchen/Living ALU-008-005-001 W06 UPPER-A: 925 × 1,210 mm facing W
- Kitchen/Living ALU-012-005-001 W08: 1,700 × 2,770 mm facing N
- Kitchen/Living ALU-008-005-001 W07: 1,700 × 1,810 mm facing N
- Kitchen/Living ALU-008-005-001 W10: 2,100 × 3,370 mm facing E
- Kitchen/Living ALU-012-005-001 W09: 1,700 × 3,010 mm facing E
- ENS MASTER ALU-008-005-001 W16: 1,300 × 2,050 mm facing N
- MASTER ALU-012-005-001 W17: 1,600 × 2,290 mm facing N
- MASTER ALU-008-005-001 W18: 1,600 × 3,250 mm facing E
- STAIR 1F ALU-012-005-001 W15: 1,300 × 1,210 mm facing W
- STAIR 1F ALU-008-005-001 W15: 375 × 1,210 mm facing W
- BATH 1F ALU-012-005-001 W13: 1,300 × 1,330 mm facing W
- BATH 1F ALU-008-005-001 W26: 1,000 × 730 mm facing S
- Bedroom 2 ALU-008-005-001 W20: 1,600 × 2,410 mm facing E
- Bedroom 3 ALU-008-005-001 W19: 1,600 × 2,410 mm facing E
- STUDY/HALL ALU-008-005-001 W14: 1,300 × 970 mm facing W
Certificate 0012284733-02, issued 17 November 2025, from the council's DA documents. Verify this certificate
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