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Building Ratings & Performance.
Sustainability meets building performance.
Ensure your building is compliant with international standards and safeguard your investment.
Our clients have avoided
0,000,000kg of carbon emissions and saved
$0,000,000 in utility costs.
Trusted by outstanding businesses.
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Building performance made simple.
Managing a broad portfolio with dozens of different clients and hundreds of individual buildings can feel like a juggling act. Our suite of products and services makes it easy to measure, monitor and improve building performance – no matter how many balls are in the air.
NABERSNZ Ratings
Secure high-quality tenants and prove the long-term value of your building with a NABERSNZ assessment and improvement plan.
Green Star Ratings
Get a full and thorough overview of your building’s environmental impact with one of the world’s leading building ratings: Green Star.
Continuous Commissioning
Access powerful, ongoing asset value growth and ensure long-term benefits in a continuous commissioning strategy.
Water Management
Reduce water waste, cut utility costs, and improve sustainability efforts with total water use visibility and analysis for your buildings.
“ESP’s monitoring, together with new analytical and modelling tools, has given the project team valuable insights into building performance that we have never had before”
Craig Stephens
Engineering and Building Services Manager, Goodman Property Trust

Establish your baseline.
Get a detailed overview of your current building performance with a NABERSNZ or Green Star rating from our award-winning team.
Use your new insights to develop a cost-effective and achievable improvement plan.
Monitor your performance.
Continuously measure, monitor and analyse your building’s performance with our advanced carbon and utility management software.
Uncover new efficiency opportunities with both strategic and granular data. Avoid efficiency backsliding with automated, AI-powered alerts.


Get expert advice.
Call on more than 25 years of experience from our award-winning team of engineers, consultants and climate experts.
Capitalise on the quick wins for rapid efficiency improvement and make long-term strategies for ongoing energy evolution.
Commit to efficiency.
We provide our clients with the data, monitoring software and climate expertise necessary to secure the best green building ratings and smash sustainability targets.
Bayleys and ASB are just some of the organisations enjoying the benefits of better building performance through our software and services.

Client engagements
Don’t just take our word for it.
Here are some real world examples of what retail property clients have achieved with our help. If they sound like the results you want, let’s talk.

NABERSNZ – Bayleys House
The list of sustainable credentials for Bayleys House continues to grow with not one but two NABERSNZ ratings.
Background
Managed by a partnership of Australasian asset managers; 151 Property, and Bayleys Property Services, optimising building performance and offering healthy, comfortable workspaces for tenants is top of the agenda.
NABERSNZ assessments were sought for a variety of buildings as a means to ensure consistent, accurate and verifiable results across a broad range of criteria and to enhance sustainability.
Solution
ESP engaged with the building management partnership, utilising cutting-edge technology and monitoring software to quickly and efficiently secure strong NABERSNZ ratings for the properties. The ratings were a mixed of tenancy and basebuild.
Results
A collaborative sustainable approach between landlord, property managers and tenants has delivered a high 4.5 star NABERSNZ base building rating for Bayleys House in Auckland waterfront’s dynamic commercial VXV Precinct.
Realty group Bayleys, who leases its head office in the building, has also earned a 4 star NABERSNZ rating for its tenancy – reflecting its strong commitment to the environment.
NABERSNZ assessor Hong Lee says high quality mechanical services including a fresh air system with a connected heat pump, have been instrumental in the achievement of a 4.5 star NABERSNZ rating for Bayleys House. The integrated heat pump provides consistent heat efficiency and reduces the need for electrical heating to kick in when the building cools down in winter.
Bayleys House has 70 energy monitoring meters spread across the building.“We can monitor down to 15 minute segments of energy use and you can even see the impact on air conditioning services if a staff member comes to work at 3am,” says Hong.
He says well-designed tenancy office services including LED lighting and occupancy sensors which switch off after 30 minutes, have driven the 4 star NABERSNZ tenancy score for Bayleys head office. A regime of normal daytime working hours has also propelled the Bayleys head office’s optimum energy performance.
Bayleys House also features the use of View, allowing stakeholders and staff to instantly understand how far they’ve come – and how far there is to go – on their journey towards meaningful sustainability.

IAG
Challenge
IAG were looking to achieve a NABERSNZ rating for their building at 1 Fanshaw Street, Auckland feeding into their energy efficiency and scope 2 carbon emission reduction. As a joint engagement Colliers, the Property Manager were also looking to improve asset value. The building originally had a 5-star NABERSNZ, however this had lapsed and energy usage was increasing at 9% per year.
Solution
Metering was installed to a standard that could achieve a Basebuild NABERSNZ rating. The metering provided visibility to optimise operation of the mechanical plant. ESP was engaged to complete a monitoring and targeting programme that identified energy and costs savings opportunities for the building.
Outcome
Working together, the building has now achieved a Basebuild NABERSNZ rating of 5.5 Stars rating. This rating is amongst one of the highest published basebuild ratings.

CBRE
Challenge
CBRE have teams throughout the country, managing buildings on behalf of landlords. CBRE works to improve the value of the buildings managed however staying on top of large and distributed portfolios means the team need to be as productive as possible.
Solution
CBRE and ESP have worked closely for a number of years, continually auditing and monitoring an increasing range of buildings to ensure they are energy efficient. As landlords start to see the advantages a program of NABERSNZ ratings have started, meaning the CBRE portfolio can compete for high quality, including government, tenants.
Outcome
Having worked together for a while means the CBRE portfolio are achieving above average NABERSNZ results. The CBRE team are able to be more productive and can communicate the results to landlords, backed by proof, including the use of View, a set of live sustainability dashboards that provide instant and in-situ updates on the business’ sustainability journey so far.

Auckland Council
Challenge
Managing 3,500 properties with a wide range of uses, distributed around Auckland with a small team is a huge challenge for Auckland Council. However with energy efficiency targets to meet the Council team needed to focus on achieving and sustaining gains through partnership.
Solution
The ESP energy and water monitoring solution was implemented at nearly 100 of the Councils largest, or most used buildings. The team is able to remotely identify and target improvements in the portfolio and be alerted when anomalous usage occurs. The system is now a core component of delivering to the corporate property portfolios emission reduction targets of 50% reduction by 2030 and net zero by 2050 from the Councils FY2018 baseline.
Outcome
The council have achieved energy savings of 11.73GWh (the amount ~1,035 households use each year), avoided 1,231 tonnes of CO2-e and are on track to save $1.5m per year in operating costs. Throughout Covid-19 the team was able to monitor key sites remotely, ensuring they were efficiently shutdown whilst still ensuring appropriate ventilation for their use.
Auckland Council has also invested in the use of View, providing up-to-date and digestible data on the business’s progress so far in sustainability.

Bayleys – Harbour Grounds
Challenge
The team at Bayleys manage the large property portfolio in Wynyard Quarter now named Harbour Grounds. The portfolio comprises 7 premium Auckland waterfront offices with 7,000 tenants occupying 88,000 sqm. With a change of ownership, Bayleys needed to rapidly get up to speed with the buildings performance and continue improving its value as required by the new overseas owners.
Solution
Bayleys access ESP’s suite of services including monitoring, continuous commissioning and audits to deliver a data driven energy management plan for the portfolio.
Outcome
Over the portfolio there has been an average improvement in energy efficiency of 32%, saving tenants over $3million in costs and avoiding 2,700 t CO2-e. Multiple buildings now have 4 star plus NABERSNZ ratings with further improvements underway.

Auckland Council
Challenge
Managing 3,500 properties with a wide range of uses, distributed around Auckland with a small team is a huge challenge for Auckland Council. However with energy efficiency targets to meet the Council team needed to focus on achieving and sustaining gains through partnership.
Solution
The ESP energy and water monitoring solution was implemented at nearly 100 of the Councils largest, or most used buildings. The team is able to remotely identify and target improvements in the portfolio and be alerted when anomalous usage occurs. The system is now a core component of delivering to the corporate property portfolios emission reduction targets of 50% reduction by 2030 and net zero by 2050 from the Councils FY2018 baseline.
Outcome
The council have achieved energy savings of 11.73GWh (the amount ~1,035 households use each year), avoided 1,231 tonnes of CO2-e and are on track to save $1.5m per year in operating costs. Throughout Covid-19 the team was able to monitor key sites remotely, ensuring they were efficiently shutdown whilst still ensuring appropriate ventilation for their use.
Auckland Council has also invested in the use of View, providing up-to-date and digestible data on the business’s progress so far in sustainability.

CBRE
Challenge
CBRE have teams throughout the country, managing buildings on behalf of landlords. CBRE works to improve the value of the buildings managed however staying on top of large and distributed portfolios means the team need to be as productive as possible.
Solution
CBRE and ESP have worked closely for a number of years, continually auditing and monitoring an increasing range of buildings to ensure they are energy efficient. As landlords start to see the advantages a program of NABERSNZ ratings have started, meaning the CBRE portfolio can compete for high quality, including government, tenants.
Outcome
Having worked together for a while means the CBRE portfolio are achieving above average NABERSNZ results. The CBRE team are able to be more productive and can communicate the results to landlords, backed by proof, including the use of View, a set of live sustainability dashboards that provide instant and in-situ updates on the business’ sustainability journey so far.

NABERSNZ – Bayleys House
The list of sustainable credentials for Bayleys House continues to grow with not one but two NABERSNZ ratings.
Background
Managed by a partnership of Australasian asset managers; 151 Property, and Bayleys Property Services, optimising building performance and offering healthy, comfortable workspaces for tenants is top of the agenda.
NABERSNZ assessments were sought for a variety of buildings as a means to ensure consistent, accurate and verifiable results across a broad range of criteria and to enhance sustainability.
Solution
ESP engaged with the building management partnership, utilising cutting-edge technology and monitoring software to quickly and efficiently secure strong NABERSNZ ratings for the properties. The ratings were a mixed of tenancy and basebuild.
Results
A collaborative sustainable approach between landlord, property managers and tenants has delivered a high 4.5 star NABERSNZ base building rating for Bayleys House in Auckland waterfront’s dynamic commercial VXV Precinct.
Realty group Bayleys, who leases its head office in the building, has also earned a 4 star NABERSNZ rating for its tenancy – reflecting its strong commitment to the environment.
NABERSNZ assessor Hong Lee says high quality mechanical services including a fresh air system with a connected heat pump, have been instrumental in the achievement of a 4.5 star NABERSNZ rating for Bayleys House. The integrated heat pump provides consistent heat efficiency and reduces the need for electrical heating to kick in when the building cools down in winter.
Bayleys House has 70 energy monitoring meters spread across the building.“We can monitor down to 15 minute segments of energy use and you can even see the impact on air conditioning services if a staff member comes to work at 3am,” says Hong.
He says well-designed tenancy office services including LED lighting and occupancy sensors which switch off after 30 minutes, have driven the 4 star NABERSNZ tenancy score for Bayleys head office. A regime of normal daytime working hours has also propelled the Bayleys head office’s optimum energy performance.
Bayleys House also features the use of View, allowing stakeholders and staff to instantly understand how far they’ve come – and how far there is to go – on their journey towards meaningful sustainability.

Bayleys – Harbour Grounds
Challenge
The team at Bayleys manage the large property portfolio in Wynyard Quarter now named Harbour Grounds. The portfolio comprises 7 premium Auckland waterfront offices with 7,000 tenants occupying 88,000 sqm. With a change of ownership, Bayleys needed to rapidly get up to speed with the buildings performance and continue improving its value as required by the new overseas owners.
Solution
Bayleys access ESP’s suite of services including monitoring, continuous commissioning and audits to deliver a data driven energy management plan for the portfolio.
Outcome
Over the portfolio there has been an average improvement in energy efficiency of 32%, saving tenants over $3million in costs and avoiding 2,700 t CO2-e. Multiple buildings now have 4 star plus NABERSNZ ratings with further improvements underway.

IAG
Challenge
IAG were looking to achieve a NABERSNZ rating for their building at 1 Fanshaw Street, Auckland feeding into their energy efficiency and scope 2 carbon emission reduction. As a joint engagement Colliers, the Property Manager were also looking to improve asset value. The building originally had a 5-star NABERSNZ, however this had lapsed and energy usage was increasing at 9% per year.
Solution
Metering was installed to a standard that could achieve a Basebuild NABERSNZ rating. The metering provided visibility to optimise operation of the mechanical plant. ESP was engaged to complete a monitoring and targeting programme that identified energy and costs savings opportunities for the building.
Outcome
Working together, the building has now achieved a Basebuild NABERSNZ rating of 5.5 Stars rating. This rating is amongst one of the highest published basebuild ratings.