• Practitioner + Assessor. (+ Trainee NABERS NZ assessor)• PMAG member• Tool review for IEQ and MAT credits
www.envirospec.co.nz
W E B S I T E C O N S U L T A N C Y / A S S E S S O R
What’s the programme?
1) Homestar Conultant and Assessor hat > Refresher on Homestar Framework and V2 updates > General guidelines for good performance > Findings after assessing a few apartments
2) Working Example > Lot 4 Vinegar Lane
3) EnviroSpec hat > Successfully specifying for Green Start NZ / Homestar
Why should I bother ?
If buying / Living• Warm, dry, energy efficient• Healthy indoor environment• Good sun orientation• Low water consumption• Garden and landscape benefits
If selling • More attractive to buyers (for above reasons)• Sell quicker• Sell for more money than standard home other factors being equal.
The tool is evolving…
V 1 V 2
• Star Bands now simplified and slightly more attainable for 7 star and above
• Energy Calculator now 15 points and Energy category now 48% total points available.
• Lower weighting for other categories (Sound insulation, Stormwater and Security)
• New Responsible contracting points (easier to achieve and more realistic for builder/trades)> EMP template and use accredited Ecodecorator, Ecoplumber, Ecosmart electrician, etc.
Overall Framework
Energy, Health and Comfort
Materials
Water
Waste
EHC-2 Hot Water Calculator
EHC-4 Whiteware and appliances
EHC-3 Lighting
Management
Site
Category Pages Energy , Health and Comfort
EHC-1 Space Heating Calculator
Innovation
EHC-6 Whole House Thermal Calculator
EHC-5 Renewables Calculator
EHC-8 Washing Line
EHC-7 Moisture control
EHC-10 Inclusive design
EHC-9 Sound insulation
6
4.5
2
2
8
15
4.5
1
2
3
MandatoryMinimums
General guidelines for good performance
12 points!
Products &
Materials
General guidelines for good performance
= +
How do apartments and townhouses perform?
Positives: Generally efficient use of space = positive Resource Allocation Factor
Better thermal buffering for middle apartments
Economies of scale = relatively cheaper per unit
Challenges:Can get harder to maximise rainwater harvesting and solar (roof space get divided)
Conclusion?Architects, Developers, Policy setters = Go for Homestar ! It’s accessible and affordable on individual houses to get 6-7 stars and even more so for townhouses or apartments.
Key to success = engage Homestar Practitioner early!!! (beginning of concept design)
First 8 Star certified apartment in NZHomestar V2 multi-residential Design Rating
Design inspiration – Old Vinegar Works
Penthouse 8 Star – lower apartments 6 star (Vege garden, Fruit trees, SHW and Solar PV + rainwater
harvesting)
Homestar = fun challenge and worth the outcome
Working example
3 – Specifying the correct products
Successful ESD rated building
Start here
Hmmm…I wonder if there is an
easier way?
We are keen to make it easy for you…
7
THANK YOU …