Program Details for Assessors

Eligibility Requirements

  • Watch the Assessor Orientation Webinar. Review the online recorded orientation webinar to complete the Assessment Orientation and download the webinar presentation slides.
  • Complete the StopWaste Home Energy Score Assessor Agreement. To offer the Home Energy Score to homeowners and to be an Assessor affiliated with StopWaste, interested individuals must fill out and sign the Assessor Agreement.
    • Work in one of the nine Bay Area counties. Assessors must perform an energy assessment on a single-family home located within the nine-county Bay Area.
    • Possess all required insurance. Assessors must possess the minimum insurance requirements outlined in the Assessor Agreement and all other appropriate insurance policies required by the State of California.
    • Hold a relevant building-related credential.  Assessors must hold a relevant credential from one of the residential trade organizations recognized by the DOE, listed below.
  • Pass a Free, Online Test. Interested Individuals with the necessary credentials must also pass a two-part online test in order to access the Home Energy Scoring Tool.
  • Conduct Home Energy Score Assessments. Once both parts of the training and testing are successfully completed, Assessors must score at least one home every six months to maintain an active status in the program. A program mentor will accompany you on your first assessment and rescore 5% of your assessments to ensure quality program wide.

Relevant Credentials

Individuals interested in becoming Assessors must hold a relevant credential from one of the residential trade organizations listed below. Home Energy Score recognizes the following credentials as well as more comprehensive certifications offered by these organizations. 


Minimum Accepted Credential

American Society of Home Inspectors (ASHI)

ASHI Inspector or Certified Inspector

Build it Green

Green Point Rater or Certified Green Building Professional

Building Performance Institute (BPI)

Building Science Principles Certificate of Knowledge

California Real Estate Inspector Association

CREIA Certified or Master Inspector

International Association of Certified Home Inspectors (InterNACHI)

Home Energy Inspector

National Association of Home Inspectors (NAHI)

Certified Real Estate Inspector

National Association of the Remodeling Industry (NARI)

Green Certified Professional, Certified Remodeler, or Master Certified Remodeler

North American Technician Excellence (NATE)

Air Conditioning/Heat Pumps, Gas/Oil Heating, or Gas/Oil Hydronics

Residential Energy Services Network (RESNET)

HERS Rater

Online Training & Testing Details

There is no fee for the training and testing – becoming an Assessor only involves a small investment of your time. Interested individuals must successfully complete both parts of the training and testing in order to become a qualified Home Energy Score Assessor.

  • The testing and training is conducted online and is available 24/7
  • The training Sim (Part I) allows you to go at your own pace - once you have completed the training successfully and are comfortable with the Sim, you can proceed to the testing
  • You have three chances to score each of two houses in the testing portion of the Sim – tests are self-administered, and you can return to the training for more practice at any time
  • After passing Part I of the test there is a study presentation and a short multiple choice test (Part II) which is also self-administered
    • The 20 question multiple choice test is automatically timed at 60 minutes - candidates can access the test at any time (once they have passed Part I), and are allowed two attempts to pass this test
  • The test is electronically graded and the candidate will be informed of the results immediately upon completion of the test session
  • Passing grade for the multiple choice test is 80%

Program Mentoring

Assessors will receive one-on-one mentoring and assistance offering Home Energy Score in the Bay Area. We’ll set up a brief orientation call outlining the mentoring process, explain the DOE branding guidelines, and provide tips for using the Home Energy Scoring Tool. The first Home Energy Score conducted by an Assessor will be a mentoring session, wherein qualified program mentors will observe the Assessors’ work in the home, leading up to and including generation of a Home Energy Score report. To review the Quality Assurance and Quality Control Protocols, click here.


Rebates are available for a limited time on a first come, first served basis. Assessors may be eligible to receive a $200 for each assessment, except when the assessment is performed in the City of Berkeley. 

Assessors must possess a current building-related credential, pass a two-part test, and register through StopWaste. Only Assessors registered with StopWaste can offer the Home Energy Score. To apply for a rebate, please complete the Rebate Application. You will need to complete the Rebate Application for every rebate you would like to claim. You do not need to send in another W-9 form if you have previously provided one.