Building Emissions Reduction and Disclosure
Boston’s Building Emissions Reduction and Disclosure Ordinance (BERDO) sets requirements for large existing buildings to reduce their greenhouse gas emissions over time.
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For reporting questions:
Email or call Mon - Fri, 9 a.m. - 5 p.m.
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DEADLINES▸Jan 6: 2025 building Portfolios and Individual Compliance Schedules ▸APR 1: 2026 Long-term Hardship ▸May 15: Annual Reporting ▸SEP 1: 2026 building Portfolios and Individual Compliance Schedules ▸Oct 1: 2026 Short-term Hardship
ANNOUNCEMENTS
Get guidance on BERDO reporting and emissions compliance through tailored in-person assistance. RSVP here.
Offering eligible BERDO building owners free decarbonization planning and assistance. Apply here.
New guidance is extending application deadlines for Building Portfolios and ICS to January 6, 2025. See new guidance here.
We are offering data reporting and verification services to building owners who need extra assistance. Apply here.
WHAT IS BERDO?
BERDO is a local law that aims to reduce air pollution and greenhouse gas emissions generated by large buildings in Boston. Owners of buildings subject to BERDO are required to report their buildings’ annual energy and water consumption. Starting in either 2025 or 2030, they will also need to comply with building emissions standards (i.e., emissions limits). The emissions standards set by BERDO decrease over time, with all buildings expected to reach net-zero emissions by 2050.
learn more about BERDO
↗ BERDO 101 QUICK guide
↗ ORDINANCE
↗ REGULATIONS
↗ POLICIES AND PROCEDURES
learn about the Regulations development process
↗ BERDO REGULATIONS WEBSITE
Who is covered?
BERDO applies to the following buildings:
- Residential buildings that have 15 or more units.
- Non-residential buildings that are 20,000 square feet or larger.
- Any tax parcel with multiple buildings that sum to at least 20,000 square feet or 15 units.
Please note that a mixed-use building is considered residential if 50% or more of its Gross Floor Area, excluding parking, has a residential use. Likewise, a tax parcel is considered residential if 50% or more of its Gross Floor Area, excluding parking, has a residential use.
WHAT ARE MY OBLIGATIONS UNDER BERDO?
OBLIGATIONS
Reporting
Annual reporting of total energy and water use from the previous calendar year.
Third-party verification
Third-party verify reported data on the first year of reporting and every "Verification Year" thereafter.
ㅤEmissions reductions
Reduce annual emissions below an emissions standard (emissions limit) corresponding to your building use type.
HOW DO I REPORT TO BERDO?
There are main parts to reporting:
- Report key building characteristics and your annual energy and water use through ENERGY Star Portfolio Manager
- Complete the BERDO Reporting Form to provide key data related to emissions compliance
- Complete third-party verification
FOLLOW OUR HOW TO GUIDE TO COMPLETE REPORTING
Other resources
↗ REQUEST DATA FROM EVERSOURCE
↗ rEQUEST DATA FROM NATIONAL GRID
↗ PORTFOLIO MANAGER HELPDESK
HOW DO I COMPLY WITH THIRD-PARTY VERIFICATION?
You must hire a third-party qualified energy professional to verify your reported data.
Third-party verification is required for the first year of reporting and every "Verification Year" thereafter. Verification Years include:
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HOW DO I GET STARTED WITH EMISSIONS COMPLIANCE?
EMISSIONS COMPLIANCE- Buildings must begin complying with emissions standards in 2025 or 2030, depending on their size.
Please note that a mixed-use building is considered residential if 50% or more of its Gross Floor Area, excluding parking, has a residential use. Likewise, a tax parcel is considered residential if 50% or more of its Gross Floor Area, excluding parking, has a residential use.
- Use the chart on the right to identify the emissions standard that applies to your building.
- As a default, buildings are required to comply with the emissions standard that matches its largest primary use type.
- Mixed-use buildings may adopt a Blended Emissions Standard based on the square footage of each of the building's primary uses.
- If you have already reported your energy and water use data to BERDO, you can use the public BERDO Emissions Calculator to view your building’s emissions projections and plan for emission reduction projects.
↗ BERDO EMISSIONS CALCULATOR
↗ BERDO EMISSIONS CALCULATOR GUIDE
Buildings can decrease their emissions and comply with BERDO by:
- Reducing energy use and transitioning away from fossil fuels
- Obtaining renewable energy
- Investing in Boston's environmental justice communities through Alternative Compliance Payments.
Visit our ↗ Retrofitting BERDO Buildings page for a step-by-step guide for emissions compliance
All building owners are encouraged to start planning early to utilize equipment turnover and capital improvements as opportunities to reduce energy use and emissions.
↗ SCHEDULE A BUILDING CONSULTATION
If you have already reported your data to BERDO, you can schedule a free one-on-one virtual building emissions consultation with us to help you understand your current emissions and compliance options.
↗ REGISTER FOR OFFICE HOURS ON EMISSIONS COMPLIANCE
The BERDO team hosts weekly virtual office hours focused on emissions compliance. Office hours are held weekly on Thursdays at 10 a.m. on Zoom.
LIBRARY
LIBRARYBLENDED EMISSIONS STANDARDS
↗ TEMPLATE FOR BUILDING-level blended emissions standard
BUILDING PORTFOLIOS
↗ TEMPLATE FOR BUILDING PORTFOLIO BLENDED EMISSIONS STANDARD
INDIVIDUAL COMPLIANCE SCHEDULES (ics)
↗ template for ics calculation
↗ THIRD PARTY VERIFICATION CHECKLIST FOR ICS APPLICATIONS
HARDSHIP COMPLIANCE PLANS (HCP)
↗ Compliance Cost Calculator template
↗ english Template for Notice of HCP Hearing
↗ translated templates for notice of HCP hearing
APPEALS OF REVIEW BOARD DECISIONS ON FLEXIBILITY MEASURES
↗ appeal form for building owners
↗ APPEAL FORM FOR GROUP OF TENANTS THAT REQUESTED THE TERMINATION OF A BUILDING PORTFOLIO
↗ NEWSPAPER AD FOR APPEAL HEARING TEMPLATE
Data Disclosure
The City of Boston is required to annually disclose BERDO reported data from the previous year.
Future data disclosures will report on metrics related to environmental justice and the equitable implementation of BERDO. Staff, in collaboration with community members, are identifying appropriate metrics to track and report on over time. Initial research has been conducted to evaluate options for the development of environmental justice metrics for BERDO and has been summarized in a memo.
Upcoming events
Upcoming EventsPREVIOUS WEBINARS
PREVIOUS WEBINARSIRA CLEAN ENERGY TAX INCENTIVES FOR BERDO BUILDING OWNERS (OCTOBER 2, 2024)
BERDO COMPLIANCE FOR CONDO ASSOCIATIONS WEBINAR (SEPTEMBER 26, 2024)
Renewable energy webinar (March 27, 2024)
HARDSHIP COMPLIANCE PLANS WEBINAR (FEBRUARY 14, 2024)
INDIVIDUAL COMPLIANCE SCHEDULES WEBINAR (JANUARY 31, 2024)
BUILDING PORTFOLIOS WEBINAR (JANUARY 17, 2024)
EMISSIONS COMPLIANCE WEBINAR (JANUARY 3, 2024)
Who's Involved:
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For reporting questions:
Email or call Mon - Fri, 9 a.m. - 5 p.m.
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DEADLINES▸Jan 6: 2025 building Portfolios and Individual Compliance Schedules ▸APR 1: 2026 Long-term Hardship ▸May 15: Annual Reporting ▸SEP 1: 2026 building Portfolios and Individual Compliance Schedules ▸Oct 1: 2026 Short-term Hardship
