• 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 performance12 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 …