About the City of Berkeley BESO Ordinance*


The city of Berkeley's Building Energy Saving Ordinance (BESO) requires building owners and homeowners to complete and publicly report comprehensive energy assessments to uncover energy saving opportunities. The assessments are conducted by registered energy assessors who provide tailored recommendations on how to save energy and link building owners to incentive programs for energy efficiency upgrade projects, such as Energy Upgrade California. Energy efficiency improvements are voluntary and encouraged. BESO is required prior to sale of a house or whole building under 25,000 square feet, and on a phased-in schedule for multifamily and commercial buildings. 

*Tierra stays current on issues related to BESO, but we encourage you to explore more about the ordinance at the main web portal maintained by the city's Office of Energy & Sustainable Development (OESD) at this link.

Tierra's BESO Compliance Process

1. Understand Your Needs


The process begins by discussing with us what you need for your project. Call us at 925-954-7363 or click here to describe your BESO project.  We'll get back to you within 24 hours to confirm your needs and discuss how we can help.

2. Agree to Our Services


After understanding your project, we'll provide you with a cost estimate  and contract that includes our terms and conditions.   A copy of our standard contract for services is available for download at the link below under 'Downloads and Data'.   

3. Upload Your Documents


Once have an agreement on the scope of our services, we'll request documents and data so we can start out work. Your project manager may request documents via email or a secure data portal dedicated to your project (see instructions below**)

4. Complete a Site Visit


We'll arrange a site visit at a time that's convenient for you.  The length of our visit, and any staff support we'll need from you while we're on site, will be discussed prior to our visit.

5. Review Results


We'll do our energy analysis and review with the results with you.  We'll discuss any necessary revisions and will then provide you with your final compliance documents.  

6. Submit Final Documents


After we're all done we'll electronically transmit your final BESO compliance files to you.  Tierra will submit these files to the city of Berkeley and keep you informed on the process.

Request a Quote

Tierra offers competitive prices on BESO compliance. Please tell us a little about your project and we'll contact you to discuss what we can offer and pricing. 

Request a Quote

**Sending us your project files

  • During the project, we'll provide you with a list of all BESO compliance documentation requirements.  All project files can be sent to us at services@tierrarc.com. 
  • When sending files via email be sure to include the word 'BESO' and project address in the subject line.    
  • If we've set up a secure site and folder for your project, your project manager will provide you with a link and login information.

Payments and Payment Policy

Click Here to Make a Payment

Payment Policy


Unless specified otherwise in your service contract, Tierra accepts credit and debit card payment through PayPal.  PayPal currently accepts Visa, MasterCard, Discover and American Express. 

Please note that you do not have to have a PayPal account, nor do you have to create one, to use this service. ​ After you click 'Buy Now' above  you'll be directed to the PayPal website where you simply enter the amount to be paid and hit 'Continue' button.  The next screen will give you the option to Pay with Debit or Credit Card.

Thank you for working with Tierra!