8a - Green Rating Tools

Question 1

Why do we need rating tools?

Answer 1

1. To differentiate exemplars on the market
2. A way to scientifically identify the leaders
3. Providing incentive for designers to reach top ratings
4. Branding benefits

Question 2

What are the rating tools used by NZ?

Answer 2

1. Greenstar

2. Homestar (residential)

Question 3

How much do owners save through operational costs by going with a green building?

Answer 3

5-6 times initial cost over 20 years

Question 4

How much do tenants save through operating costs in a green building?

Answer 4

3 times as much as it would cost to live in a non green building over 20 years

Question 5

What is the ratio of cost in design:building:operation?

Answer 5

For standard it may cost $1m to design, $10m to build, and $100m operational costs.

With green building, although it may cost $2m to design, and $11m to build, it will pay itself off with only $60m in operational costs.

1:10:100 vs 2:11:60

Question 6

Which type of buildings benefit most from green building?

Answer 6

High use buildings (schools, hospitals, universities, offices)
More use = more savings

Question 7

What are 3 reasons owners may want green buildings?

Answer 7

1. Operational cost savings
2. Higher building and land value
3. Productivity and user satisfaction

Question 8

Which two factors does greenstar weigh heaviest in their 8 categories and which ‘one’ least?

Answer 8

1. Indoor env. Quality
2. Energy
3. Emissions