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Crumbling Foundations


Many homeowners in parts of our state have discovered that their home foundations are crumbling due to a mineral called pyrrhotite in the concrete used to pour their homes’ foundations. 

Over the past few years, Representative Larson has worked side-by-side with Representative Joe Courtney (CT-02), Senator Richard Blumenthal (D-CT), Senator Chris Murphy (D-CT) and local, state, and federal stakeholders to find solutions for Connecticut homeowners affected by this terrible issue. 

Congressional efforts have been focused on two areas: federal studies and tax relief.  
Tax Relief:


Beginning in 2016, Reps. Larson and Courtney began consulting with the Internal Revenue Service (IRS) and Treasury Department staff, including then-IRS Commissioner John Koskinenthen-National Taxpayer Advocate Nina Olson, Department of Treasury Assistant Secretary for Tax Policy David Kautter and Treasury Secretary Steve Mnuchin. As a result of these meetings, on November 22, 2017, the IRS issued Rev. Proc. 2017-60 to enact a “safe harbor” for the treatment of crumbling foundation-related repair costs as a “casualty loss” deduction from a taxpayer's taxable income under Section 165 of the Internal Revenue Code.  

Unfortunately, the Republican tax law passed in 2017 temporarily limits the casualty loss deduction until 2025, excluding homeowners with crumbling foundations. Under the law, only taxpayers who suffer damage related to a presidentially-declared Stafford Act disaster may deduct their property-casualty losses. In order to mitigate this change, Representatives Larson, Courtney, and Neal (MA-01) were able to obtain guidance from the IRS to extend the period of time that homeowners would have to claim crumbling foundation related repairs on their federal taxes. Under the new guidance, homeowners will now have through the end of 2020 to make qualified repairs to their home and until April 2021 to claim those repairs on an amended 2017 federal tax return. 

Rep. Larson is working to pass a permanent fix for the casualty-loss provision. He joined Congressman Courtney to introduce H.R. 3251, which would repeal the temporary ban on using the casualty-loss deduction. On June 20, 2019, Rep. Larson secured Ways and Means Committee Chairman Neal’s on the record commitment that the Committee would address the casualty loss issue.  

Federal Action: 

Working with Senators Murphy and Blumenthal (D-CT) and Representative Courtney, Rep. Larson was able to secure three federal studies as part of the federal appropriations process: 

  • A Government Accountability Office (GAO) study to examine the financial impact of pyrrhotite in concrete home foundations. When completed, this study will provide an estimate of the financial toll due to crumbling foundations. The study will also examine responsive actions already taken to mitigate this impact and present any additional actions the federal government can take in order to further do so. This study was directed as part of a FY19 government appropriations law (P.L. 116-6) and is expected to be completed in the first half of 2020. 

  • A U.S. Geological Survey to develop a map showing pyrrhotite occurrences across the United States. The results of this research will lead to a greater understanding of other areas that may experience crumbling foundations in the future. This study was directed as part of a FY19 government appropriations law (P.L. 116-6) and is expected to be completed in early 2020. 

  • A National Institute of Standards and Technology (NIST) study to research the effects of the mineral pyrrhotite on concrete aggregate. NIST is the leading federal expert in cement and concrete standards and will develop a cost-effective and standard testing method for at-risk homes and other structures for the presence of the mineral pyrrhotite. The study will also result in the creation of a risk-rating scale so that homeowners, businesses, and local government have a better understanding of what quantity of pyrrhotite poses a danger to their foundations’ structural integrity. These results will provide much needed information to towns and homeowners who currently have no way of accurately accessing their properties risk of collapse and potential impact on property value. This study was funded in an FY20 government appropriations law (P.L. 116-93). 

More on Crumbling Foundations

September 15, 2021 Press Release
Legislation Puts Money Back in Americans’ Pockets, Gets People Back to Work, and Rebuilds our Economy
September 15, 2021 Press Release
Today, Reps. John B. Larson (CT-01) and Joe Courtney (CT-02) announced that two tax provisions were included in the Build Back Better Act to help homeowners defray costs of crumbling foundations repair or replacement.
February 4, 2021 Press Release
The Tax Assistance for Crumbling Foundations Act would provide federal tax assistance to victims of the crumbling foundations crisis.
December 22, 2020 Press Release
Representatives John B. Larson (CT-01), Rosa DeLauro (CT-03), Joe Courtney (CT-02), Jim Himes (CT-04), and Jahana Hayes (CT-05) secured historic investments for Connecticut in the fiscal year 2021 omnibus spending package and coronavirus relief deal.
August 25, 2020 Press Release

WASHINGTON, DC – Today, Representatives John Larson (CT-01) and Joe Courtney (CT-02)  announced that federal funding they secured in an appropriations bill for Fiscal Year (FY) 2020 to conduct research on Connecticut’s crumbling foundations crisis has been awarded to the University of Connecticut (UCONN).

July 30, 2020 Press Release
Today, Representatives John Larson (CT-01) and Joe Courtney (CT-02), and Senators Richard Blumenthal (D-CT) and Chris Murphy (D-CT), announced that the U.S. Government Accountability Office (GAO) had completed its report on the financial impact of crumbling foundations that the Members requested as part of the 2019 Consolidated Appropriations Act. The report—the first of its kind from a federal agency to explore multiple facets of this issue—provides a non-partisan and extensively researched analysis on how this issue has affected communities in Connecticut and Massachusetts.
July 1, 2020 Press Release

WASHINGTON, DC – Today, Congressman John B. Larson (CT-01) and Congressman Joe Courtney (CT-02) announced that two provisions they authored in support of Connecticut residents impacted by crumbling foundations passed in the House of Representatives. The provisions were included as part of the Moving Forward Act (H.R. 2), the sweeping infrastructure investment bill that would invest more than $1.5 trillion in proposals to modernize and rebuild communities in eastern Connecticut and across the country. A third provision authored by Rep.

April 23, 2020 Press Release
Today, Rep. John B. Larson (CT-01) applauded the Internal Revenue Service’s (IRS) new guidance clarifying their November announcement for homeowners with crumbling foundations who have received assistance from the Connecticut Foundations Solutions Indemnity Company (CFSIC).
December 17, 2019 In The News

Members of Connecticut’s Congressional delegation have moved closer to securing $1.5 million in federal funding to study how pyrrhotite effects concrete foundations in the state.

U.S. Sens. Richard Blumenthal and Chris Murphy, and Reps. Joe Courtney and John Larson in a joint statement Monday announced that funding they sought to conduct research on Connecticut’s crumbling foundations crisis has been included in the final version of the Commerce, Justice, Science, and Related Agencies (CJS) appropriations bill for fiscal year 2020.