Our Next Chapter in
Sustainable Bond Leadership

Leveraging the power of capital markets to
drive positive environmental and social impact

View our 2012-2023 Projected Impact Metrics   Access CUSIP-Level Impact Data   Review our Green Bond Impact Methodology   Sign Up for ESG News  

When we launched our Green Bond Business in 2010, our premise was simple but pioneering.

We would leverage our leading role in the mortgage finance market to incentivize property owners to make environmental improvements to their properties. In parallel, we would offer a transparent and high-quality investment opportunity to global investors seeking to accelerate the transition to a low-carbon economy. For more than a decade, Fannie Mae has not only put that premise into action but expanded on it. Today, we generate measurable environmental and social benefits for property owners, tenants, lenders, and investors.

Our Environmental and Social Impact

Fannie Mae issuances 2012-2023

For impact at the CUSIP and loan level, click here.



projected kilo British Thermal Units (kBtu) of source energy saved


projected gallons of water saved 1


projected metric tons carbon dioxide equivalent (MTCO2e) of GHG emissions prevented



housing units retrofitted or green building-certified


projected utility cost savings by multifamily tenants, or an average of $188 per family per year 2


projected average homeowner utility cost savings per single-family home per year 3


affordable multifamily units at ≤ 50% AMI financed (45.6% restricted vs. 54.4% unrestricted units) 4


affordable multifamily units at ≤ 60% AMI financed (54.5% restricted vs. 45.5% unrestricted units) 4


number of pads in Manufactured Housing Communities financed 4

1 Multifamily Green Bonds only.

2 Multifamily Green Bonds backed by Green Rewards mortgage loans only.

3 Single-Family Green Bonds only.

4 Fannie Mae Multifamily Social Bonds from 2021-2023. Number of units are at-issuance sum of restricted affordable and unrestricted affordable. Unrestricted affordable includes securities issued on or after May 1, 2022 backed by properties with a minimum of 80% of units affordable to households earning no more than 60% of Area Median Income (AMI) based on rent rolls submitted at acquisition. Please refer to the Fannie Mae Social Bond Framework for additional information.

Refer to Fannie Mae's Green Bond Impact Methodology for more information on our impact methodology.

This document is for general information purposes only. The information presented in this document is neither an offer to sell nor a solicitation of an offer to buy any Fannie Mae security mentioned herein or any other Fannie Mae security. The projected energy, emissions, and water usage savings are Fannie Mae’s estimates of the potential savings at the related mortgaged properties that may result from the implementation of the efficiency improvements required by the indicated green financing programs. There can be no assurance that any particular savings will be achieved at any given mortgaged property. Fannie Mae disclaims any liability for the failure of any mortgaged property to achieve any particular energy, emissions, or water usage savings. The estimates are solely as of the date hereof and Fannie shall have no obligation to provide updated estimated or actual savings information.

Our Green and Social Bond Offerings

Our Green Bond Business supports the Single-Family and Multifamily housing markets and our Social Bond Business supports the Multifamily housing markets in alignment with our Green Bond Frameworks and Social Bond Framework.

Multifamily Green Mortgage-Backed Securities (MBS)

Through our Delegated Underwriting and Servicing (DUS®) model, a Multifamily DUS MBS is generally backed by one Green loan on one property.

Learn more  

Multifamily Social Mortgage-Backed Securities (MBS)

Through our Delegated Underwriting and Servicing (DUS®) model, a Multifamily DUS MBS is generally backed by one Social loan on one property.

Learn more  

Green and Social Guaranteed Multifamily Structures (Fannie Mae GeMS™)

A resecuritized pool of either Green or Social MBS is structured as a Real Estate Mortgage Investment Conduit (REMIC), providing greater collateral diversity to investors.

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Single-Family Green MBS

Includes mortgage loans backed by newly constructed single-family residential homes with ENERGY STAR® certifications that meet or exceed the national program requirements for ENERGY STAR 3.0 Certified Homes, which are, on average, 20% more efficient than single-family homes built to code.

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Providing Confidence and Transparency to Investors

Rigorous standards, transparency, and accountability to investors are the foundations of Fannie Mae’s Green and Social Bond Businesses — and are critical to our goal of advancing an active and growing global green bond market. That is why we are committed to providing comprehensive, best-in-class disclosures about our securitization process and the estimated environmental, social, and financial impacts of our Green and Social Bonds.

Our objective is to supply investors with the information and data they need to evaluate and have full confidence in the quality, rigor, and impact of Fannie Mae’s Green and Social Bonds.

Related resources:


Our Recognition

Case study – Pax Futura

Pax Futura is Seattle, Washington’s first certified Passive House apartment project – and a real-world demonstration that ultra-high-performance green building can be done at scale. The project is the first Fannie Mae green mortgage loan secured by a property with a green building certification in our Towards Zero Group.

Read more