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Home report
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15 Olola Avenue Castle Hill NSW 2154
BASIX certificate and NatHERS rating
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This home's BASIX certificate commits it to 4 kW of solar panels and a 2,000 litre rainwater tank. It beat its BASIX energy target, scoring 82 against 72.
Key features
- Windows
- Up to aluminium frames 136.3 m², double glazing 136.3 m²
- Wall insulation
- Polystyrene; Rockwool batts, roll or pump-in+ foil/sarking
- Roof and ceiling insulation
- Ceiling: fibreglass batts or roll; roof: foil backed blanket
- Hot water
- Gas instantaneous with a performance of 5.5 stars
- Air conditioning and heating
- Airconditioning ducting only (living area and bedroom)
BASIX certificate
- Energy score
- 82 (target 72)
- Water score
- 40 (target 40)
- Thermal performance
- Pass
- Materials score
- -85
- Heating load
- 13 MJ/m² a year
- Cooling load
- 17 MJ/m² a year
- Bedrooms
- 6
- Conditioned floor area
- 392.5 m²
- Unconditioned floor area
- 4.6 m²
- Site area
- 698 m²
- Roof area
- 183 m²
- Garden area
- 315 m²
- Climate zone
- NatHERS climate zone 56
- Hot water
- Gas instantaneous with a performance of 5.5 stars
- Solar panels
- 4 kW
- Rainwater tank
- 2,000 litres
- Fixtures
- Showerheads 4 star, toilets 5 star, kitchen taps 5 star, basin taps 5 star
- LED lighting
- Yes
- Cooktop
- Gas
- Clothes line
- Yes
- Maximum glazing
- aluminium frames 136.3 m², double glazing 136.3 m²
Heating
- Living area: airconditioning ducting only; Energy rating: n/a
- Bedroom: airconditioning ducting only; Energy rating: n/a
Cooling
- Living area: airconditioning ducting only; Energy rating: n/a
- Bedroom: airconditioning ducting only; Energy rating: n/a
Construction and insulation
- Floor: concrete slab on ground, conventional slab (polystyrene)
- Floor: suspended floor above open subfloor, concrete - suspended; frame: no frame (no added insulation)
- Floor: above habitable rooms or mezzanine, treated softwood; frame: timber - untreated softwood (no added insulation)
- Floor: suspended floor above garage, treated softwood; frame: timber - untreated softwood (no added insulation)
- Garage floor: concrete slab on ground (fibreglass batts or roll)
- External wall: insulated concrete form (ICF); frame: no frame (polystyrene)
- External wall: brick veneer; frame: timber - H2 treated softwood (rockwool batts, roll or pump-in+ foil/sarking)
- External garage wall: brick veneer; frame: timber - H2 treated softwood (rockwool batts, roll or pump-in+ foil/sarking)
- Internal wall: plasterboard; frame: timber - untreated 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 1815825S, issued 3 October 2025, from the council's DA documents.
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