Can I Claim Foundation Repair on My Taxes? A Complete Guide for Homeowners

Quick Answer: Are Foundation Repairs Tax Deductible?

If you repaired a cracked or sinking foundation, you generally cannot deduct the cost as a personal expense. However, the expense may be added to your home's basis for future capital gains calculations, or it could qualify as a casualty loss if the damage was caused by a sudden, unexpected event like a flood.

Understanding the Tax Concepts Involved

Two main tax concepts affect foundation work:

• Capital Improvements: Expenses that add value, prolong the life, or adapt the home to new uses. These are added to the property's basis.
• Casualty Losses: Deductions for damage from sudden, unexpected, or unusual events, subject to thresholds.

When Foundation Repair Is a Capital Improvement

To be considered a capital improvement, the repair must meet at least one of the following criteria:

• Increase the home's fair market value.
• Extend the useful life of the structure.
• Adapt the home for a new purpose.

Typical qualifying repairs include underpinning, pier installation, and major waterproofing that prevents future damage. The cost is not deductible now, but you add it to your home's adjusted basis, which can reduce taxable capital gains when you sell.

How to Adjust Your Basis

When you sell, calculate:

Keep receipts, contractor invoices, and a written description of the work for future reference.

When Foundation Repair May Qualify as a Casualty Loss

If a natural disaster, flood, or other sudden event damages your foundation, you might claim a casualty loss on Schedule A, subject to two thresholds:

• The loss must exceed $100 per event.
• The total loss must be more than 10% of your adjusted gross income (AGI) after subtracting any insurance reimbursements.

Only the unreimbursed portion is deductible. You cannot claim a loss for ordinary wear and tear or gradual settling.

Filing a Casualty Loss

Steps:

Report the final amount on Form 1040, Schedule A under "Other Itemized Deductions."

What Is Not Deductible

Routine foundation settlement, minor cracks, or cosmetic fixes are considered maintenance, not improvements. These costs are never deductible nor added to basis.

Record‑Keeping Tips for Homeowners

Maintain a dedicated folder (digital or paper) with:

• Signed contracts and invoices.
• Before‑and‑after photos.
• Engineer or inspector reports confirming the need for repair.
• Proof of payment (checks, bank statements).
• Insurance correspondence, if applicable.

Good documentation simplifies basis adjustments and supports casualty loss claims if audited.

Frequently Asked Questions

Can I deduct foundation repair on a rental property?

Yes, but differently. For rental real estate, repair costs are generally deductible as ordinary business expenses in the year incurred, while improvements are capitalized and depreciated over 27.5 years.

Does the Tax Cuts and Jobs Act affect these deductions?

The 2017 Act eliminated personal casualty loss deductions except for federally declared disasters. If your damage stems from such a disaster, you can still claim the loss.

What if I use a home‑based business?

If a portion of your home is used exclusively for business, you may allocate a percentage of the improvement cost to the business portion for depreciation.

How long should I keep records?

Keep foundation‑related documents for at least three years after you file the return that includes the deduction or basis adjustment, and indefinitely for records that affect capital gains.