What Qualifies as a Capital Improvement
A capital improvement is a permanent addition or alteration that increases the home's value, extends its useful life, or adapts it to new uses. Examples include a new roof, kitchen renovation, bathroom addition, HVAC replacement, landscaping, driveway repaving, and energy-efficient upgrades. These costs are added to your tax basis, reducing your taxable gain when you sell.
Routine maintenance and repairs (painting, fixing leaks, replacing broken fixtures) do not qualify as capital improvements. The distinction is durability and value creation — if the work adds lasting value to the property, it likely qualifies.
Record-Keeping Best Practices
The IRS expects you to maintain records of capital improvements for as long as you own the property plus three years after selling. Keep receipts, invoices, contracts, canceled checks, and credit card statements for every qualifying improvement. Photographs before and after the work can supplement financial records.
If you have lost records for improvements made years ago, contact the contractor (many keep records for extended periods), check your bank and credit card statements, or review your personal records and photographs. Even partial documentation can support a basis adjustment.
How Improvements Reduce Your Tax
Every dollar of qualifying capital improvements adds to your cost basis. A higher basis means a smaller gain, which means less tax. If you bought your home for $200,000 and invested $80,000 in qualifying improvements over the years, your adjusted basis is $280,000. If you sell for $600,000, your gain is $320,000 rather than $400,000 — saving you thousands in taxes on the portion above your exclusion.
Start compiling your improvement records now, before you sell. A comprehensive list with supporting documentation prepared in advance makes the tax filing process smooth and ensures you do not miss deductions you are entitled to.