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High performance
facades
Making a business case
 Does a better façade
mean we can reduce
the cost of
mechanical plant?
 Is a high performance
façade a good
investment?
...
What matters to
building developers?
• Reduced CAPEX
• Increased property values
• Increased rental rates
• Market differe...
Poor building performance
risks devaluating building assets
“New laws demanding mandatory disclosure of energy efficiency ...
Building performance matters
to your guests and clients
An example of how real-time building performance
can be displayed ...
Green Star Rating impact on
commercial office building returns
Almost a
increase in returns
for Green Star
Office building...
NABERS energy impact on
commercial office building returns
The Property Council/IPD – December 2014
increase in returns
fo...
Increasing focus on how
buildings can enhance health and wellbeing
The WELL Building Standard®
is an evidence-based system...
A poor façade can undermine
building performance
AURECON ON HIGH
PERFORMANCE FACADES
Investigate façade performance
early using rapid modelling tools
Early stage modelling
means we can drive
better decision ...
Promising developments
in early stage modelling tools
Sefaira
Formit 360
Green Building Studio
InEnergy
Optimisation software allows
rapid assessment of design options
BeOPT DesignBuilder
AURECON ON HIGH
PERFORMANCE FACADES
A better façade can mean
$ saved on the mechanical plant
Case Study:
The Building
• New 7 story office
building
• 9,300 m2...
Early stage modelling was
done using Safeira
Metropolitan Fire Brigade –
Burnley Complex, Australia
AURECON ON HIGH
PERFOR...
Energy load visualisation
Metropolitan Fire Brigade –
Burnley Complex, Australia
AURECON ON HIGH
PERFORMANCE FACADES
Cloud based modelling speeds
up comparison of design options
Metropolitan Fire Brigade –
Burnley Complex, Australia
AURECO...
Response curves show link
between mechanical and façade systems
Metropolitan Fire Brigade –
Burnley Complex, Australia
Per...
Results
Metropolitan Fire Brigade –
Burnley Complex, Australia
Improved western façade performance provides:
• 10% Reducti...
Cost impacts
Metropolitan Fire Brigade –
Burnley Complex, Australia
Impact
COST OF IMPROVED WESTERN FACADE
Improved glazin...
Bottom line and benefits
• Net Capital Cost of
$2K - $25K
• Assume worst case
of $25K CAPEX
• NPV of $46K over
15 years
• ...
Takeaways
• Good facades are a terrific
investment
• Early stage modelling tools will
drive design rather than validate
de...
Contact:
Chris Buntine
Senior ESD Engineer
+61 3 9975 3288
Chris.Buntine@aurecongroup.com
Read more on
our website!
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High performance facades: Making a business case

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Building high performance facades can help property developers to reduce the cost of construction, avoid underinvestment in building facades and prevent poor building operational performance. By building quality facades, property developers can reduce the space and cost associated with mechanical plant and provide better management of thermal, daylight and glare performance. Aurecon’s Senior ESD Engineer, Chris Buntine, discusses how early stage performance modelling can be used to assess the trade-offs in capital cost and performance between the façade and mechanical plant.

Published in: Engineering

High performance facades: Making a business case

  1. 1. High performance facades Making a business case
  2. 2.  Does a better façade mean we can reduce the cost of mechanical plant?  Is a high performance façade a good investment? Why are we underinvesting in building façades? Seven17 Bourke Street, Australia AURECON ON HIGH PERFORMANCE FACADES
  3. 3. What matters to building developers? • Reduced CAPEX • Increased property values • Increased rental rates • Market differentiation • Reduced outgoings
  4. 4. Poor building performance risks devaluating building assets “New laws demanding mandatory disclosure of energy efficiency ratings have outed the worst-performing offices in the country, with some of the nation’s largest landlords responsible for building with zero star NABERS Energy ratings. The Commercial Building Disclosure website is part of a national program that kicked off in November last year, where sellers and lessors office space of 2000 square metres or more are required to obtain and disclose an up-to-date NABERS rating. Big players, including Brookfield, Multiplex, Charter Hall, GE Real Estate Investments Australia and Becton Property Group, come up on the website as owners of some of the least-efficient buildings in Australia.” Source: Financial Review, March 24 2011 http://www.afr.com/real- estate/commercial/investment/worstperforming-offices-revealed-20110324-ij37r AURECON ON HIGH PERFORMANCE FACADES
  5. 5. Building performance matters to your guests and clients An example of how real-time building performance can be displayed within buildings. AURECON ON HIGH PERFORMANCE FACADES
  6. 6. Green Star Rating impact on commercial office building returns Almost a increase in returns for Green Star Office buildings The Property Council/IPD – December 2014 3% AURECON ON HIGH PERFORMANCE FACADES
  7. 7. NABERS energy impact on commercial office building returns The Property Council/IPD – December 2014 increase in returns for NABERS Energy ratings 4-6 Stars 1.8% AURECON ON HIGH PERFORMANCE FACADES
  8. 8. Increasing focus on how buildings can enhance health and wellbeing The WELL Building Standard® is an evidence-based system for measuring, certifying, and monitoring the performance of building features that impact health and wellbeing AURECON ON HIGH PERFORMANCE FACADES
  9. 9. A poor façade can undermine building performance AURECON ON HIGH PERFORMANCE FACADES
  10. 10. Investigate façade performance early using rapid modelling tools Early stage modelling means we can drive better decision making around façade performance… Rather than verifying poor designs after they are locked in… AURECON ON HIGH PERFORMANCE FACADES
  11. 11. Promising developments in early stage modelling tools Sefaira Formit 360 Green Building Studio InEnergy
  12. 12. Optimisation software allows rapid assessment of design options BeOPT DesignBuilder AURECON ON HIGH PERFORMANCE FACADES
  13. 13. A better façade can mean $ saved on the mechanical plant Case Study: The Building • New 7 story office building • 9,300 m2 NLA • Large exposed western façade • Chilled Water VAV Metropolitan Fire Brigade – Burnley Complex, Australia If we improve the western façade performance can we downsize the mechanical plant? AURECON ON HIGH PERFORMANCE FACADES
  14. 14. Early stage modelling was done using Safeira Metropolitan Fire Brigade – Burnley Complex, Australia AURECON ON HIGH PERFORMANCE FACADES
  15. 15. Energy load visualisation Metropolitan Fire Brigade – Burnley Complex, Australia AURECON ON HIGH PERFORMANCE FACADES
  16. 16. Cloud based modelling speeds up comparison of design options Metropolitan Fire Brigade – Burnley Complex, Australia AURECON ON HIGH PERFORMANCE FACADES
  17. 17. Response curves show link between mechanical and façade systems Metropolitan Fire Brigade – Burnley Complex, Australia Performance measures: • Reduced window to wall ratio • Improved window U-values and lower SHGC • Exterior horizontal shade AURECON ON HIGH PERFORMANCE FACADES
  18. 18. Results Metropolitan Fire Brigade – Burnley Complex, Australia Improved western façade performance provides: • 10% Reduction in cooling capacity (192kW) • 2% Increase in heating capacity • 3% Reduction in electrical energy use • 19% Reduction in gas use AURECON ON HIGH PERFORMANCE FACADES
  19. 19. Cost impacts Metropolitan Fire Brigade – Burnley Complex, Australia Impact COST OF IMPROVED WESTERN FACADE Improved glazing $64K - $87K Horizontal Shading (60m@400mm) $18K Total: $82K - $105K REDUCED COST OF MECHANICAL PLANT Reduction in cooling capacity $50K Reduced riser space $30K Total: $80K ANNUAL ENERGY SAVINGS $5.6K ANNUAL RENTAL VALUE OF ADDITIONAL NLA $2K AURECON ON HIGH PERFORMANCE FACADES
  20. 20. Bottom line and benefits • Net Capital Cost of $2K - $25K • Assume worst case of $25K CAPEX • NPV of $46K over 15 years • IRR of 30% Other benefits not included: • Reduction in plant room space • Reduction in cost of opaque façade versus glazed • Reduced HVAC maintenance • Reduced window cleaning • Reduced peak load electricity costs • Improved productivity due to reduced glare and heat gain • Availability of views and daylight due to reduced use of blinds • Higher rental rates due to improved space quality and better ratings AURECON ON HIGH PERFORMANCE FACADES
  21. 21. Takeaways • Good facades are a terrific investment • Early stage modelling tools will drive design rather than validate design • Better tools mean will open up design team engagement • We need to translate façade performance into financial terms • We need more accessible and robust costing assumptions Faculty of Engineering and Information Technology, UTS, Australia
  22. 22. Contact: Chris Buntine Senior ESD Engineer +61 3 9975 3288 Chris.Buntine@aurecongroup.com Read more on our website!

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