Threat of Condemnation and Section 1033 Tax Treatment

Section 1033 of the Internal Revenue Code lets you defer capital gains tax when you sell property under a genuine threat of condemnation, provided you reinvest the proceeds in qualifying replacement property within the statutory window. The threshold question is whether the threat was real enough to count, because a rumor about a highway project or a general planning discussion will not do. A government body with actual condemnation power must have communicated its decision to acquire your specific parcel.

What Counts as a Threat

Section 1033 applies when property is “compulsorily or involuntarily converted” through condemnation or the threat of it.¹ The IRS standard, set in Revenue Ruling 63-221, requires that you had reasonable grounds to believe the condemning authority would follow through with formal proceedings if you refused to sell. A representative of that body must have told you, in writing or verbally, that acquisition of your property was decided.²

Written notices from the agency are the strongest evidence. Verbal statements can qualify, but the person speaking must have authority to initiate or recommend condemnation, and the message must reference a concrete plan to take your parcel. A public announcement that a city is studying an interchange somewhere in your neighborhood is not enough. Save every letter, email, and dated note from your conversations with officials; if the IRS questions the deferral later, this file is what carries you.

Sales to Private Buyers Still Qualify

You do not have to sell to the government itself. If a genuine threat exists and you sell to a private buyer instead, the transaction still qualifies as an involuntary conversion.¹ What matters is that the threat was in place at the time of the sale, and that you can document it.

Which Parts of the Award Qualify

A condemnation payment often bundles several kinds of money together, and they are not all treated the same way.

Legal fees, appraisal costs, and engineering expenses you incur to negotiate or contest the taking reduce your award before you calculate gain. The result is your “net condemnation award,” and that is the figure you work with for Section 1033.³ Any special assessment the authority withholds against your remaining land also reduces the award.

When only part of your property is taken and the value of what remains drops, severance damages compensate for that loss. Severance damages are not part of the award for the taken portion. They reduce the basis of your retained property, and if the net severance damages exceed that basis, the excess is gain that can itself be deferred under Section 1033.³

Interest included in a delayed award is taxable as ordinary income. It does not qualify for deferral and does not enter the gain calculation on the property itself. In protracted cases the interest component can be sizable, so plan for it separately.

Federal relocation assistance paid under the Uniform Relocation Assistance Act is not taxable income at all and is not part of the condemnation award for any purpose.⁴

What You Can Buy as Replacement Property

The replacement standard depends on how you used the condemned property, and picking the wrong test is one of the quickest ways to lose the deferral.

If the property was for your own personal use or you actively managed it, the replacement must be “similar or related in service or use” to what was taken.¹ A homeowner replaces a home. A landlord who ran a rental building replaces it with another rental operation. The physical characteristics and your day-to-day involvement both matter.

Real property held for business or investment gets a more forgiving rule. Under Section 1033(g), the replacement only has to be “like kind.”¹ For real estate, that is broad: a condemned retail building can be replaced with an apartment complex, and farmland can be replaced with an office building. Inventory and property held mainly for resale do not qualify.

The Related-Party Restriction

Certain taxpayers cannot buy replacement property from a related person. The restriction applies to C corporations, to partnerships in which C corporations own more than 50 percent of the capital or profits interest, and to any other taxpayer whose realized gain from involuntary conversions during the year exceeds $100,000.¹ “Related person” pulls in family members, controlled entities, and the other relationships listed in Sections 267(b) and 707(b)(1). One narrow exception: if the related party had itself acquired the property from an unrelated person during your replacement period, the purchase can qualify.

Deadlines for Reinvesting

The replacement window opens on the earlier of the day you sell the condemned property or the day the threat first arose.¹ You can start shopping the moment you learn condemnation is coming, even before any money changes hands.

The closing deadline depends on what was taken:

For most property, two years after the close of the first tax year in which any part of the gain is realized. Proceeds received in 2025 must be reinvested by December 31, 2027.¹
For business or investment real property, three years after the close of that first tax year.¹

If you need more time, you can apply to the IRS for an extension, but the application must be filed before the original period expires.¹ Asking after the deadline has passed leaves you with no deferral.

Missing the deadline forces you to file an amended return for the year you received the proceeds and report the full gain, along with interest running from the original due date.³ The same rule kicks in if you reinvest less than you planned.

How the Numbers Work

Realized gain is the net condemnation award minus the adjusted basis of the condemned property. Adjusted basis is usually your purchase price plus permanent improvements, minus any depreciation you claimed over the years.

Reinvest at least the full net award and the entire gain is deferred. Reinvest less, and only the shortfall is taxable, capped at the actual gain.¹ Say you received $400,000 for a property with a $300,000 basis and spent $350,000 on a replacement. You recognize $50,000, not the full $100,000 of gain.

The deferred gain does not vanish. It reduces the basis of the new property: cost minus the gain you didn’t recognize. Continuing the example, the $350,000 replacement carries a basis of $300,000, so a larger gain surfaces when you eventually sell it. If you buy several replacement properties, the basis reduction is allocated among them in proportion to their costs.¹

If the Property Is Your Home

Homeowners have a stacking benefit that often eliminates the tax entirely. Section 121 treats a condemnation as a sale for purposes of its $250,000 exclusion, or $500,000 for married couples filing jointly, if you meet the ownership and use requirements.⁵ Apply Section 121 first; there is no reinvestment requirement.

If gain remains above the exclusion, layer Section 1033 on top and defer the rest by buying a replacement home. In running the reinvestment math, the amount realized is reduced by the gain already excluded under Section 121.⁵ For most homeowners, the exclusion absorbs the whole gain and no reinvestment is needed for tax purposes.

Making the Election on Your Return

You elect deferral by omitting the deferred gain from income on the return for the year you received the proceeds. Silence alone is not enough. Attach a detailed statement describing the involuntary conversion: the date the threat arose, the net condemnation award, your adjusted basis, the gain realized, and either the replacement property you already bought or your plans to reinvest.⁶

Personal-use property is reported on Form 8949 and Schedule D (Form 1040); losses on personal-use property are not deductible. Business or investment property is reported on Form 4797, and part of the gain may be ordinary income if depreciation recapture applies.³

If replacement happens in a later year, attach a follow-up statement to that year’s return describing the property you bought.³ Keep everything: the condemnation file, the basis records for the original property, and the closing documents for the replacement. Hold those records for at least three years after you eventually sell the replacement, because the deferred gain rides along and the IRS can examine the original deferral when the later sale is filed.

1
Office of the Law Revision Counsel. 26 USC 1033 – Involuntary Conversions
2
Internal Revenue Service. Private Letter Ruling 202001016
3
Internal Revenue Service. Publication 544, Sales and Other Dispositions of Assets
4
eCFR. 49 CFR 24.209 – Relocation Payments Not Considered as Income
5
Office of the Law Revision Counsel. 26 US Code 121 – Exclusion of Gain From Sale of Principal Residence
6
eCFR. 26 CFR 1.1033(a)-2 – Involuntary Conversion Into Similar Property