KO Appraisal
Guide

Conservation Easement Appraisal

A conservation easement appraisal values the development rights a landowner permanently gives up by conveying a qualified real property interest to a land trust or government agency. Under Treas. Reg. § 1.170A-14(h)(3), the value is normally the difference between the fair market value of the property before the easement and its fair market value afterward. That is the before-and-after method, used where there is no substantial record of comparable easement sales. The IRS publishes a dedicated audit technique guide for these deductions, Publication 5464, and Treasury has identified certain syndicated versions as listed transactions. Both the taxpayer and the appraiser carry statutory penalty exposure.

What has to be true before valuation is even relevant

IRC § 170(h) requires a qualified conservation contribution: a qualified real property interest, given to a qualified organization, exclusively for conservation purposes. The restriction must be granted in perpetuity and the conservation purpose must be protected in perpetuity. The conservation purposes are enumerated in § 170(h)(4)(A): preservation of land areas for outdoor recreation by, or the education of, the general public; protection of a relatively natural habitat of fish, wildlife, or plants; preservation of open space, including farmland and forest land, where the preservation is either for the scenic enjoyment of the general public or pursuant to a clearly delineated Federal, State, or local governmental conservation policy, and in either case will yield a significant public benefit; and preservation of a historically important land area or a certified historic structure. The significant public benefit requirement attaches to both open space prongs. It is not an alternative to them.

Easement deductions are lost on deed defects as well as on valuation. The recurring battleground is Treas. Reg. § 1.170A-14(g)(6), which governs the donee's proportionate share of proceeds if the easement is judicially extinguished. Section 605(d) of the SECURE 2.0 Act directed Treasury to publish safe harbor deed language for extinguishment and boundary line adjustment clauses; Treasury did so in Notice 2023-30, but the window to record a conforming amended deed closed on July 24, 2023. Separately, where the donor reserves rights whose exercise may impair the conservation interests, Treas. Reg. § 1.170A-14(g)(5)(i) requires baseline documentation of the property's condition, made available to the donee before the gift, sufficient to allow the donee to monitor and enforce the restriction.

No appraisal cures a defective deed. Have the deed reviewed by counsel before the gift, not after.

The before-and-after analysis, done honestly

The "before" value is where these appraisals are won and lost. It is a highest and best use conclusion for the unencumbered property, and it has to satisfy the ordinary tests: legally permissible, physically possible, financially feasible, maximally productive. Those tests are answered on market evidence, not on a hypothetical entitlement narrative. A development scenario that no comparable sale, absorption evidence, or entitlement record supports will not survive examination.

Two rules in Treas. Reg. § 1.170A-14(h)(3)(i) reduce the deduction, and neither is optional. Under the enhancement rule, if granting the easement increases the value of any other property owned by the donor or a related person, the deduction must be reduced by that increase. Under the contiguous parcel rule, where the easement covers a portion of contiguous property owned by the donor and the donor's family, the deduction is measured by the before-and-after difference across the entire contiguous holding, not just the encumbered portion. A third rule sits in the next subsection, § 1.170A-14(h)(3)(ii): where the restriction has no material effect on the value of the property, or serves to enhance rather than reduce it, no deduction is allowable at all.

The "after" value must reflect what the deed actually permits: reserved rights, retained building envelopes, permitted agricultural uses. Restrictions that already burden the land are a different matter. Zoning, a Williamson Act contract, a recorded prior easement, or private CC&Rs constrain the before value as well as the after value, and must be carried through both sides of the analysis. That is usually where an inflated before value comes apart.

Syndicated deals, the 2.5x cliff, and audit posture

Congress and the IRS have moved hard against inflated easement deductions. IRC § 170(h)(7), added by section 605 of the SECURE 2.0 Act for contributions made after December 29, 2022, provides that a partnership's contribution "shall not be treated as a qualified conservation contribution" at all if the amount of the contribution exceeds 2.5 times the sum of each partner's relevant basis; parallel rules reach S corporations and other pass-through entities. This is a cliff, not a haircut. Cross the threshold by a dollar and the entire deduction is lost for everyone, not merely the excess. Narrow exceptions apply: contributions made outside a three-year holding period, certain family partnerships, and certain contributions preserving a certified historic structure.

Separately, Treasury issued final regulations at Treas. Reg. § 1.6011-9 (T.D. 10007, 89 Fed. Reg. 81341, Oct. 8, 2024) identifying certain syndicated conservation easement transactions as listed transactions. A participant must disclose on Form 8886, and a failure to do so is penalized under IRC § 6707A. A material advisor must file Form 8918, and a failure to do so is penalized under IRC § 6707. The regulation keys off promotional material offering a charitable deduction of 2.5 times or more of the amount invested. The IRS also publishes a Conservation Easement Audit Technique Guide (Publication 5464) setting out how examiners approach these appraisals.

For the appraiser, IRC § 6695A applies with full force: the penalty is the lesser of (i) the greater of 10 percent of the underpayment attributable to the misstatement or $1,000, and (ii) 125 percent of the gross income received for preparing the appraisal. No penalty applies if the appraiser establishes that the appraised value was more likely than not the proper value. A separate rule bars the fee for a qualified appraisal from being based to any extent on the appraised value of the property; Treas. Reg. § 1.170A-17(a)(9) treats a fee as value-based if any part of it depends on the appraised amount allowed by the IRS. A contingent or percentage-of-value fee disqualifies the appraisal.

California-specific points

Conservation easements in California are creatures of Civil Code §§ 815-816. Section 815.1 defines the interest and requires that it bind successive owners of the land, section 815.2 makes it an interest in real property and perpetual in duration, and section 815.3 lists who may acquire and hold one: a tax-exempt 501(c)(3) nonprofit qualified to do business in this state whose primary purpose is the preservation, protection, or enhancement of land in its natural, scenic, historical, agricultural, forested, or open-space condition or use; a state or local governmental entity otherwise authorized to hold real property, where the easement is voluntarily conveyed; and a federally recognized California Native American tribe, or a non-federally-recognized California Native American tribe on the Native American Heritage Commission contact list, for protection of a California Native American cultural place. State-law validity and federal deductibility are separate questions, and both have to be satisfied.

California has periodically offered a state income tax credit for qualifying donations, but it is authorized only for contributions made inside windows the statute specifies. Rev. & Tax. Code § 17053.30 for individuals and § 23630 for corporations allow a credit equal to 55 percent of the fair market value of a qualified contribution under the Natural Heritage Preservation Tax Credit Act, Pub. Res. Code § 37000 et seq., whose definition of "property" expressly includes conservation easements contributed in perpetuity. The contribution has to be approved for acceptance by the Wildlife Conservation Board. The statute names three periods: January 1, 2000 through June 30, 2008, January 1, 2010 through June 30, 2020, and January 1, 2021 through June 30, 2026. Those periods have opened and closed more than once, and a contribution made after June 30, 2026 earns no credit unless the Legislature authorizes a further period, so confirm the status for your taxable year before counting on it. California also incorporates the federal itemized deduction rules: Rev. & Tax. Code § 17201 applies Part VI of subchapter B of chapter 1 of the Code, which is where § 170 sits, so a qualifying donation also supports a California charitable contribution deduction on Schedule CA (540), subject to California's own modifications and limits. The federal deduction is not the whole of the tax benefit.

California conformity runs to a fixed "specified date" version of the Internal Revenue Code under Rev. & Tax. Code § 17024.5, and the Legislature advances that date only periodically. Whether a given federal change carries over for California purposes therefore depends on the specified date that applies to your taxable year, and the federal and California answers can differ. For taxable years beginning on or after January 1, 2025, § 17024.5(a)(1)(Q) sets the specified date at January 1, 2025, which is later than the December 29, 2022 enactment of the § 170(h)(7) 2.5x cliff, so that provision sits inside the conformity vintage for those years. The divergence risk is confined to earlier taxable years and to federal changes enacted after the specified date. That is a question for your CPA, and it is separate from the valuation.

On property taxes, Rev. & Tax. Code § 402.1(a) requires the assessor to consider the effect on value of enforceable restrictions, and its list expressly includes recorded conservation, trail, and scenic easements. That is a different analysis from mine, on a different standard, and it will produce a different number.

Do not confuse a conservation easement with a Williamson Act contract under Government Code § 51200 et seq. The Williamson Act is a self-renewing ten-year contract for restricted assessment in exchange for an agricultural or open-space use restriction, not a perpetual charitable conveyance. But an existing Williamson Act contract is a real encumbrance that must be reflected in the before value.

Filing mechanics and engagement

A qualified appraisal under Treas. Reg. § 1.170A-17 is required for any easement deduction over $5,000, and Form 8283 Section B must carry the appraiser's declaration and the donee's acknowledgment. Where the claimed deduction exceeds $500,000 the appraisal itself is attached to the return under IRC § 170(f)(11)(D). For an easement on a building in a registered historic district, IRC § 170(f)(13) imposes a $500 filing fee where the claimed deduction exceeds $10,000, and IRC § 170(h)(4)(B) adds substantive requirements including that the restriction preserve the entire exterior of the building and that the donor and donee enter a written agreement.

Deduction limits are more generous here than for most property: IRC § 170(b)(1)(E) allows qualified conservation contributions up to 50 percent of the contribution base, with a fifteen-year carryforward, and up to 100 percent for qualified farmers and ranchers meeting the statutory tests.

I am Kevin O'Brien, MAI, SRA, a California Certified General Real Estate Appraiser, BREA certificate #3005065, listed on the ASC National Registry. Appraiser credentials are state-issued, so I appraise California property only. I founded KO Appraisal in 2023; before that I was a Senior Real Estate Appraiser at JP Morgan Chase and an independent fee appraiser at MVT Appraisal. In those prior roles the work included condemnation, estates, financing, and due diligence support for accountants, investment firms, law firms, lenders, and private and public agencies. Property types valued include vacant land, neighborhood and community shopping centers, apartment complexes, single- and multi-tenanted industrial buildings, low- to high-rise office buildings, and mixed-use facilities. Standard turnaround is one to three weeks. Deposition and expert witness testimony available.

Commercial line (619) 704-7070, kocommercialappraisal@gmail.com. Residential 760-685-8036, kevin@koappraisal.com. Office at 600 W Broadway, San Diego, CA 92101.

Common questions

Why are conservation easement appraisals audited so aggressively?
Because inflated before values in syndicated transactions produced deductions far in excess of what investors paid. Congress responded with IRC § 170(h)(7), which for contributions after December 29, 2022 disallows the entire pass-through contribution, not merely the excess, where it exceeds 2.5 times the sum of the partners' or shareholders' relevant basis. Treasury then finalized Treas. Reg. § 1.6011-9 in October 2024, identifying certain syndicated easement transactions as listed transactions subject to Form 8886 and Form 8918 disclosure. The IRS publishes a dedicated audit technique guide for these appraisals. A landowner making a genuine donation of a real conservation interest is still entitled to a deduction. The scrutiny is a reason to build the file properly, not a reason to avoid the gift.
How is the value determined if there are no comparable easement sales?
Treas. Reg. § 1.170A-14(h)(3) directs the before-and-after method precisely because a substantial record of comparable easement sales usually does not exist. I appraise the property twice: once at its highest and best use unencumbered, and once as restricted by the specific terms of the deed. The difference, adjusted for the enhancement and contiguous parcel rules, is the easement value. Where a substantial record of comparable sales of easements does exist, the regulation looks to that evidence instead.
I am only encumbering part of my ranch. Does the rest matter?
Yes. Under the contiguous parcel rule in Treas. Reg. § 1.170A-14(h)(3)(i), where the easement covers a portion of contiguous property owned by you and your family, the deduction is measured across the entire contiguous holding before and after. The enhancement rule in the same subsection further reduces the deduction if the easement increases the value of other property you or a related person owns. Protected open space next door can increase the value of a neighboring homesite, and the enhancement rule requires that be tested and quantified rather than assumed away. An appraisal that ignores it will not survive examination.
Can the land trust pay for the appraisal or arrange it?
The regulations do not address who may pay for or arrange the appraisal. What they address is who may not perform it and how the fee may not be set. Treas. Reg. § 1.170A-17(b)(5) excludes the donor, the donee, and parties related to either of them from serving as the qualified appraiser, so the appraiser cannot be the land trust or a person related to it. The same provision excludes an appraiser who receives a fee prohibited by Treas. Reg. § 1.170A-17(a)(9), which bars a fee that is based to any extent on the appraised value, so a contingent or percentage-of-value fee disqualifies the appraisal outright. Land trusts can and often do prepare the baseline documentation required by Treas. Reg. § 1.170A-14(g)(5), which is a separate deliverable and no substitute for the appraisal.
Who wrote this Kevin O'Brien, MAI, SRA. California Certified General Real Estate Appraiser #3005065, issued by the California Bureau of Real Estate Appraisers (BREA). Practicing in San Diego. This page reflects how these assignments are actually handled, not a summary of other people's summaries.
Where this applies Appraiser licensing is state-specific, there is no national appraisal licence, so appraisal engagements here are California properties, primarily San Diego County. The valuation methodology and the federal tax rules described above apply anywhere in the United States; if your property is in another state, you need an appraiser credentialed there, and this page should still tell you what to ask them for.

Sources

Every statutory and regulatory claim on this page traces to one of the following. Where a source could not be confirmed, the claim was removed rather than softened.

  1. IRC § 170(h) (qualified conservation contributions); § 170(h)(4)(A) (enumerated conservation purposes; the open space prong at (h)(4)(A)(iii) requires preservation either "for the scenic enjoyment of the general public" or "pursuant to a clearly delineated Federal, State, or local governmental conservation policy," and in either case that the preservation "will yield a significant public benefit"); § 170(h)(4)(B) (certified historic structure / registered historic district building requirements)
  2. IRC § 170(h)(7) (contribution by a partnership "shall not be treated as a qualified conservation contribution" if it exceeds 2.5 times the sum of each partner's relevant basis; exceptions for 3-year holding period, family partnerships, and certified historic structures; added by SECURE 2.0 Act § 605, effective for contributions after Dec. 29, 2022)
  3. IRC § 170(b)(1)(E) (50% of contribution base; 15-year carryforward; 100% for qualified farmers and ranchers)
  4. IRC § 170(f)(11)(C), (D) (qualified appraisal required above $5,000; appraisal attached to the return above $500,000)
  5. IRC § 170(f)(13) ($500 filing fee for a historic-district building easement where the claimed deduction exceeds $10,000)
  6. Treas. Reg. § 1.170A-14(g)(5)(i) (baseline documentation required where the donor reserves rights that may impair the conservation interests); § 1.170A-14(g)(6) (judicial extinguishment; donee's proportionate share of proceeds)
  7. Treas. Reg. § 1.170A-14(h)(3) (before-and-after valuation where no substantial record of comparable easement sales exists) and § 1.170A-14(h)(3)(i) (enhancement rule; contiguous parcel rule)
  8. Treas. Reg. § 1.170A-14(h)(3)(ii) (no deduction allowable where the grant of the restriction has no material effect on the value of the property, or serves to enhance rather than reduce it). Verified against eCFR 2026-07-29.
  9. Treas. Reg. § 1.170A-17(a)(9) (fee for a qualified appraisal cannot be based to any extent on the appraised value); § 1.170A-17(b)(5) (individuals who are not qualified appraisers: a person receiving a fee prohibited by (a)(9), the donor, a party to the transaction in which the donor acquired the property, the donee, related persons and certain regularly used independent contractors, and persons barred from practice before the IRS; the provision does not address who may pay for or arrange the appraisal)
  10. Treas. Reg. § 1.6011-9 (T.D. 10007, 89 Fed. Reg. 81341, Oct. 8, 2024) (certain syndicated conservation easement transactions identified as listed transactions; 2.5x promotional-material threshold at § 1.6011-9(b)(1)); IRC § 6707A (participant failure to include reportable transaction information with a return; Form 8886); IRC § 6707 (material advisor failure to file the return required by § 6111; Form 8918)
  11. Notice 2023-30, "Conservation Easements: Safe Harbor Deed Language for Extinguishment and Boundary Line Adjustment Clauses" (published in the Internal Revenue Bulletin Apr. 24, 2023). Section 2.06 of the notice states that because it is published April 24, 2023, the 90th day of the SECURE 2.0 Act § 605(d)(2) window is July 22, 2023, that the date is a Saturday, and that IRC § 7503 extends it to Monday, July 24, 2023. Section 3.01(1) requires the amended deed to be signed by donor and donee and recorded on or before July 24, 2023.
  12. IRC § 6695A (appraiser penalty: lesser of the greater of 10% of the underpayment or $1,000, and 125% of gross income from preparing the appraisal; more-likely-than-not exception at § 6695A(c)); IRC § 6662(e), (h) (taxpayer valuation misstatement penalties)
  13. IRS Publication 5464, Conservation Easement Audit Technique Guide; IRS Form 8283 and Instructions
  14. Cal. Civ. Code §§ 815, 815.1, 815.2, 815.3, 816 (California Conservation Easement Act; § 815.1 defines a conservation easement as a limitation "binding upon successive owners of such land"; § 815.2(a) and (c) make it an interest in real property and § 815.2(b) provides that it "shall be perpetual in duration"; § 815.3 authorized holders include qualifying 501(c)(3) nonprofits, governmental entities where the easement is voluntarily conveyed, and federally and non-federally recognized California Native American tribes on the Native American Heritage Commission contact list)
  15. Cal. Rev. & Tax. Code § 17053.30 (individuals) and § 23630 (corporations) (credit equal to 55% of the fair market value of a qualified contribution approved for acceptance by the Wildlife Conservation Board; authorized for contributions made Jan. 1, 2000 through June 30, 2008, Jan. 1, 2010 through June 30, 2020, and Jan. 1, 2021 through June 30, 2026, the last being the final period the statute authorizes); Cal. Pub. Res. Code § 37000 et seq. (Natural Heritage Preservation Tax Credit Act of 2000); § 37002 ("property" defined to include conservation easements; "conservation easement" defined by reference to Civ. Code § 815.1 and contributed in perpetuity)
  16. Cal. Rev. & Tax. Code § 17201 (California applies IRC Part VI of subchapter B of chapter 1, containing § 170, except as otherwise provided); § 17024.5 ("specified date" federal conformity; subd. (a)(1)(Q) sets the specified date at January 1, 2025 for taxable years beginning on or after January 1, 2025)
  17. Cal. Rev. & Tax. Code § 402.1(a) (assessor must consider enforceable restrictions, expressly including recorded conservation, trail, and scenic easements)
  18. Cal. Gov't Code § 51200 et seq. (Williamson Act, distinguished)
  19. Cal. Bus. & Prof. Code § 11300 et seq. (Real Estate Appraisers' Licensing and Certification Law; Bureau of Real Estate Appraisers)

Related reading

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