What Is a Preservation Trust and How Does It Work?

A preservation trust is a nonprofit organization that protects historic buildings, cultural sites, farmland, forests, and other significant properties from demolition, neglect, or incompatible development. Most are organized as tax-exempt charities under Section 501(c)(3) of the Internal Revenue Code,¹ and they work in two main ways: by taking ownership of a property directly, or by holding a permanent legal agreement called an easement that restricts what the owner and every future owner can do with it. Donors who grant qualifying easements can claim substantial federal tax deductions, provided the donation meets a long list of technical requirements.

What a Preservation Trust Protects

The scope is broad. On the built-environment side, trusts protect landmark homes, commercial buildings, and entire historic districts. For a property to qualify for a tax-deductible facade easement, it generally must be listed on the National Register of Historic Places or certified by the Secretary of the Interior as historically significant within a registered historic district.²

On the natural-resource side, trusts conserve forests, wetlands, farmland, wildlife habitat, and scenic open space. Archaeological sites also fall within their reach. The common thread is public value: each protected asset has some quality that would be lost or degraded if the land were left to ordinary market pressures.

Federal law groups these into four recognized “conservation purposes,” and an easement must advance at least one to qualify as a deductible charitable contribution:³

Preserving land for public outdoor recreation or environmental education.
Protecting the natural habitat of fish, wildlife, plants, or similar ecosystems.
Preserving open space, including farmland and forest, for scenic enjoyment or under a clearly defined government conservation policy.
Protecting a historically important land area or a certified historic structure.

The terms “conservation easement” and “preservation easement” get used interchangeably in practice. Conservation easements tend to emphasize land and ecosystems; preservation easements target historic or architectural features. Both are conservation easements under the tax code.

How a Preservation Trust Works

Trusts use three main strategies: direct ownership, easements, and advocacy.

The simplest is outright ownership. The trust buys the property or accepts it as a donation, takes title, and manages the site. Sometimes it opens the property to the public. Sometimes it leases to tenants who agree to maintain the character of the place. This gives the trust full control, along with full responsibility for upkeep.

Far more common is the easement. Here, the owner keeps the property but gives up specific development or alteration rights, transferring them to the trust through a recorded legal agreement. A typical preservation easement identifies the physical features that must be preserved, prohibits activities that would damage the property’s historic or architectural character, and sets out what the owner can do without needing the trust’s approval.⁴ Once recorded, the easement runs with the land, binding every future owner. The trust’s job shifts from owner to watchdog: monitoring the property and enforcing the restrictions.

The third approach is advocacy. Trusts push for preservation-friendly policies, help secure government funding for restoration, and run public programs that build support for protecting historic and natural resources.

Tax Benefits for Easement Donors

The biggest financial incentive is the federal income tax deduction. When you donate a qualifying easement, you can deduct the value of the rights you surrendered, as set by a qualified appraisal. Legally, the donation must be a “qualified conservation contribution”: a qualified real property interest, given to a qualified organization, exclusively for one of the four recognized conservation purposes.³ The conservation purpose must also be protected in perpetuity.⁵

Most taxpayers can deduct up to 50% of their adjusted gross income in the year of donation. Qualified farmers and ranchers can deduct up to 100%. Any unused deduction carries forward for up to 15 additional years.³

Easements can also reduce estate taxes. Under Section 2031(c), the executor of an estate can elect to exclude up to 40% of the value of land protected by a qualified conservation easement, capped at $500,000.⁶ The cap drops if the original easement reduced the land’s value by less than 30%. The exclusion covers only the land, not the buildings on it, and only family members of the original donor can claim it.

IRS Requirements That Trip Up Donors

The tax benefits are real, but the IRS enforces the rules aggressively. The mistakes that destroy deductions are usually procedural rather than substantive, and a single missed step can wipe out the entire claim.

Qualified Appraisal

Every easement donation claimed on a tax return requires a qualified appraisal. The appraiser must hold a recognized professional designation or have at least two years of experience valuing the type of property involved, must regularly perform appraisals for compensation, and cannot charge a fee based on a percentage of the appraised value. The appraisal must be dated no earlier than 60 days before the donation, and you must have it in hand before filing the return that claims the deduction.⁷

Form 8283

If your total noncash charitable contributions exceed $500, you must file Form 8283 with your return. For an easement, you complete Section B and attach the appraisal summary; both the appraiser and the receiving organization sign the form.⁸

Mortgage Subordination

If the property carries a mortgage, the lender must formally subordinate its interest to the easement before the donation. That way, if the lender later forecloses, the easement survives. Signing the subordination after the donation does not fix the problem, and courts have repeatedly denied deductions where the mortgage was not subordinated at the time of the contribution.⁵

Facade Easement Visibility

Facade easements on historic buildings carry an extra rule: the protected exterior must be visible to the public. If it is not visible from a public street or sidewalk, the easement agreement itself must give the general public a regular opportunity to view it.²

Monitoring After the Donation

An easement is only as strong as its enforcement. Because the restrictions last forever, the trust holding the easement takes on a permanent duty to monitor the property and respond to violations.

In practice, this means annual site visits. A trust representative inspects the property, takes photographs, and compares current conditions against the baseline documentation recorded at the time of donation. If the owner has made unauthorized changes, the trust works with them to correct the violation or, if necessary, enforces the terms in court.

Monitoring costs money, year after year, which is why many trusts ask easement donors to contribute to a stewardship endowment at the time of donation. The endowment generates enough annual income to fund inspection and enforcement for the long haul.

Beware Syndicated Easement Deals

The deduction has drawn bad actors. In syndicated conservation easement transactions, promoters recruit investors into a partnership that buys land, donates an easement, and claims deductions far larger than what the investors actually paid in. The IRS has designated these as listed transactions requiring disclosure and has ramped up enforcement, with roughly 700 active Tax Court cases and hundreds more at the examination and appeals stages.⁹

The warning sign is simple. If someone pitches you an easement arrangement where the projected tax deduction is several times your actual investment, that is exactly the profile the IRS is targeting. Legitimate easement donations involve real property you already own, appraised at fair market value, with restrictions that genuinely limit what you can do with the land.

What Happens if a Preservation Trust Dissolves

Because easements are supposed to last in perpetuity, a fair question is what happens if the organization holding the easement ceases to exist. Most well-drafted easement agreements name a backup holder, often a government agency, that steps in automatically. Even without a named backup, courts apply a legal doctrine that transfers the easement to another qualified organization with a similar mission rather than let the restrictions disappear. The perpetuity requirement in the tax code effectively demands this safeguard: if the easement could vanish when the trust folds, it would not have qualified for a deduction in the first place.⁵

One practical way to reduce the risk of problems later is to work with a trust accredited by the Land Trust Accreditation Commission, which independently verifies compliance with the operational standards published by the Land Trust Alliance.

1
Office of the Law Revision Counsel. 26 USC 501 – Exemption From Tax on Corporations, Certain Trusts, etc.
2
Internal Revenue Service. Facade Easement Contributions
3
Office of the Law Revision Counsel. 26 USC 170 – Charitable, etc., Contributions and Gifts
4
National Trust for Historic Preservation. Preservation Easements
5
eCFR. 26 CFR 1.170A-14 – Qualified Conservation Contributions
6
Office of the Law Revision Counsel. 26 US Code 2031 – Definition of Gross Estate
7
Internal Revenue Service. Instructions for Form 8283 (12/2025)
8
Internal Revenue Service. About Form 8283, Noncash Charitable Contributions
9
Internal Revenue Service. IRS Increases Enforcement Action on Syndicated Conservation Easements