https://ttlc.intuit.com/community/taxes/discussion/adjusted-cost-basis-permanent-improvement-proof/01/3243251#M1192561 <P>I sold my house in 2023 and totaled up the permanent improvements made over a 40 year period. What does the IRS require as proof? I have invoices and estimates but am missing canceled checks and credit card statements. Many of the companies are out of business.</P> Wed, 11 Feb 2026 06:35:11 GMT tomlamson 2026-02-11T06:35:11Z https://ttlc.intuit.com/community/taxes/discussion/adjusted-cost-basis-permanent-improvement-proof/01/3243251#M1192561 <P>I sold my house in 2023 and totaled up the permanent improvements made over a 40 year period. What does the IRS require as proof? I have invoices and estimates but am missing canceled checks and credit card statements. Many of the companies are out of business.</P> Wed, 11 Feb 2026 06:35:11 GMT https://ttlc.intuit.com/community/taxes/discussion/adjusted-cost-basis-permanent-improvement-proof/01/3243251#M1192561 tomlamson 2026-02-11T06:35:11Z https://ttlc.intuit.com/community/taxes/discussion/re-adjusted-cost-basis-permanent-improvement-proof/01/3243263#M1192569 <P>All you can do is offer any documentation you have&nbsp;</P> Thu, 07 Mar 2024 05:21:14 GMT https://ttlc.intuit.com/community/taxes/discussion/re-adjusted-cost-basis-permanent-improvement-proof/01/3243263#M1192569 Bsch4477 2024-03-07T05:21:14Z