South Hobart Units
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House Notes – South Hobart Units
These two small strata title units have been built on a treed site in the shadows of Mt Wellington, 10 minutes from the city of Hobart. They have been oriented for privacy from house above and for the view down the valley. The units are timber framed with metal cladding, good levels of insulation (floors R 3.3, external walls R 3.8, and roofs R 5.3), low E double glazed composite timber/aluminium windows, small slow combustion wood heaters and LED lighting throughout.
These units are small in size and this is reflected in their good energy rating (the First Rate programme automatically increases the star rating score for smaller floor areas).
Features includes;
- Timber framed plasterboard with fibreglass insulation ceiling type
- Efficient lighting
- R5.3 ceiling rating
- 8.1 stars energy rating
- R3.3 floor rating
- Timber framed with particle board and timber overlay floor type
- R3.5 internal-external walls rating
The architect for this house is Nigel Legge and the house was owner built with advice from the builder of the adjacent unit.
This house achieved a NatHERS rating of 8.1 stars using NatHERS accredited software (FirstRate5). Find out how the star ratings work on the Nationwide House Energy Rating Scheme (NatHERS) website.
Sustainability Features
- Energy efficiency:
- Draught proofing
Efficient lighting
- Passive heating cooling:
- Cross ventilation
Passive solar designed home
Shading
- Water harvesting and saving features:
- Above ground rainwater storage
Stormwater management
- Above ground rainwater storage Type:
- Above ground metal storage tank
- Above ground rainwater storage Size
- 23,000 litres
- Storage connected to
- Garden
- Energy Efficient Lighting
- LED lights throughout
Natural daylight
- Sustainable materials:
- Timber framing generally. Low emission slow combustion wood heater (refer CSIRO 2003 - Life Cycle Assessment of Greenhouse Gas Emissions from Domestic Woodheating).
- Insulation Type:
- Under-roof
Ceiling
Internal walls
External walls
Floor
- Ceiling Type:
- Bulk – glass wool
- Floor Rating:
- R3.3
- Internal / External Walls Type:
- Timber framed plasterboard
- Internal / External Walls Rating:
- R3.5
- Under Roof Insulation Type:
- R1.3 fibreglass/foil blanket over battens with air space under, R4 fibreglass between ceiling framing, and non-permeable vapour barrier on inside of external stud walls.
- Under Roof Insulation Rating:
- R5.3
- Internal Walls Insulation Type:
- Bulk – glass wool
- Internal Walls Insulation Rating:
- R2.5
- External Walls Rating:
- R3.8
- External Walls Type:
- R1.3 fibreglass/foil blanket over battens with air space under, R2.5 fibreglass between external wall studs, and non-permeable vapour barrier on inside of external stud walls.
- All-Electric Home?
- Yes
- Energy star rating:
- 8.1 stars
- Renewable energy
- Slow combustion wood heater
- Total cost of home when constructed:
- $300,000 including site-works.
- Cost estimate of sustainable home/features:
- $5,000
- Estimate of annual savings:
- $1,000
- House Size
- 71m2 conditioned area
- BAL Rating
- BAL – 29: Increasing levels of ember attack and ignition of debris with a heat flux of up to 29kW/m2
- Roof
- Metal (Colorbond)
- Wall Materials
- Lightweight construction (timber frame)
- Window and Door Types
- Double glazing
- Number of bedrooms
- 2
- Number of bathrooms
- 1
- Garden / Outdoors
- Native plants
- Waste Reduction Practices:
- Recycle
- Healthy home features
- Airtight house design
Natural light and ventilation
No carpets
- Housing Type:
- High Density Housing/Strata Development
- Project Type:
- New Build
- Open with support of
- Renew Tasmania South Branch
- Builder
- Owner Builder
- Designer
- Nigel Legge Architect
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