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Evidence is what a federal standard asks for before a missing feature goes back on a historic building, and two programs ask in different words. Certification of a rehabilitation for federal tax purposes runs under 36 CFR 67.7(b)(6), which accepts "documentary, physical, or pictorial evidence."1 A grant-assisted project planned and supervised by the National Park Service and state preservation officers runs under 36 CFR 68.3(b)(6), which calls for "documentary and physical evidence."2 A report that satisfies one may not satisfy the other.
The two rehabilitation standards are not worded alike
The Standards for Rehabilitation at 36 CFR 67.7(b) apply to projects seeking certification for federal tax purposes.1 The Standards for the Treatment of Historic Properties at 36 CFR part 68 are used by the National Park Service and by state historic preservation officers in planning, undertaking, and supervising grant-assisted projects.2 Each part carries a rehabilitation list of ten numbered standards, and the two lists are close in substance.
They are not close in wording. Part 67 casts each of its ten standards with the word shall.1 Part 68 casts each of the ten standards in its own rehabilitation list with the word will.2 The evidence phrase recurs across part 68, unchanged in the restoration standard at 68.3(c)(7) and in the threshold for reconstruction at 68.3(d)(1), and with or in place of and at 68.3(d)(4).2 Three formulations of one requirement run through the two parts, and a writer moving between the parts can carry the wrong formulation across.
Which contents list applies depends on which finding is made
Review under section 106 of the National Historic Preservation Act has a documentation rule of its own, written as several separate lists. The general test appears at 36 CFR 800.11(a), where the agency official ensures that a determination, finding, or agreement is "supported by sufficient documentation to enable any reviewing parties to understand its basis."3 The paragraphs that follow say what each finding must contain. A finding of no historic properties affected takes three items under 800.11(d).3 A finding of no adverse effect or adverse effect takes six under 800.11(e), and a request for Council comment without a memorandum of agreement takes four under 800.11(g).3
The three lists are not versions of one another. Both 800.11(d) and 800.11(e) open with a description of the undertaking and its area of potential effects, then call for the steps taken to identify historic properties.3 Paragraph (e) adds four items that paragraph (d) does not carry.3 Two of them are a description of the characteristics that qualify the affected properties for the National Register, and an explanation of why the adverse effect criteria were found applicable or inapplicable.3 Paragraph (g) repeats neither of them. It asks instead for alternatives proposed, alternatives considered and rejected with reasons, views submitted, and substantive revisions or additions to documentation already provided to the Council.3
The section 106 criteria name part 68
The criteria of adverse effect at 36 CFR 800.5(a)(1) turn on whether the undertaking would diminish the integrity of a property's "location, design, setting, materials, workmanship, feeling, or association."4 The section then gives seven examples of adverse effects at 800.5(a)(2).4
The second of those seven examples names the other part. Alteration of a property counts as an adverse effect when it "is not consistent with the Secretary's standards for the treatment of historic properties (36 CFR part 68) and applicable guidelines."4 A finding of no adverse effect may rest on conditions, including later review of rehabilitation plans for consistency with those same standards.4
The certification application counts its own items
An owner whose property sits inside a registered historic district, and who asks the Secretary whether it contributes to that district, completes part 1 of the Historic Preservation Certification Application.5 Section 67.4(c) lists eight kinds of documentation, and the paragraph reaches a preliminary determination request under 67.3(a)(4) on the same terms.5 Part 2 covers the rehabilitation itself, and the regulation is explicit about sequence, stating that owners "are strongly encouraged to submit part 2 of the application prior to undertaking any rehabilitation work."6
Supporting documentation appears again elsewhere in part 67. Where structural members must be dismantled and rebuilt, part 67 attaches three conditions to certifying that work.1 The first is that "the necessity for dismantling is justified in supporting documentation," and the other two concern retained architectural features and retained historic materials.1 Prior approval of a project by other agencies and organizations does not ensure certification by the Secretary, and the Standards for Rehabilitation "take precedence over other regulations and codes."1
Where an editor's reading stops
Whether a feature is significant, whether an alteration diminishes integrity, and whether a treatment suits a particular building are determinations for the preservation professionals and the reviewing office. We hold no view on any of them. Client documents are confidential from the moment they arrive.
Our reading covers the text and its citations. A rehabilitation report that quotes part 68 while the application seeks certification under part 67 has drawn on the wrong standard, and the two texts differ on comparison. Where a finding names four of the six items its paragraph requires, the two absent items show as gaps in the document. Where an integrity argument answers five of the seven aspects listed at 800.5(a)(1), two of the seven have gone unanswered.
Appendix: The four treatments and the agreement that closes a review
Part 68 defines four treatments, and one set of standards applies to a property.2 The choice follows from the property's significance, its existing physical condition, the extent of documentation available, and interpretive goals where applicable.2 Preservation sustains the existing form, integrity, and materials of a property, and new exterior additions fall outside that treatment.2 Rehabilitation makes an efficient compatible use possible through repair, alterations, and additions.2 Restoration depicts a property as it appeared at a particular period, by removing features from other periods and reconstructing missing features from the restoration period.2 Reconstruction depicts a non-surviving property by means of new construction, and 68.3(d)(5) provides that a reconstruction "will be clearly identified as a contemporary re-creation."2
Identification effort has a written standard as well. Under 36 CFR 800.4(b)(1), the agency official makes "a reasonable and good faith effort to carry out appropriate identification efforts."7 The factors the paragraph lists include past planning, research, and studies, the magnitude and nature of the undertaking, the degree of federal involvement, and the likely nature and location of historic properties.7 Where a finding of no historic properties affected is adequately documented and the state or tribal preservation officer does not object within 30 days, the agency official's section 106 responsibilities are fulfilled.7 The Council may object in the same period where it has entered the section 106 process.7
A memorandum of agreement ends the process differently. Under 36 CFR 800.6(c), an executed and implemented agreement evidences the agency official's compliance with section 106 and part 800, and it "shall govern the undertaking and all of its parts."8 The signatories hold sole authority to execute, amend, or terminate it, and the agreement must include provisions for termination and for reconsideration of terms if the undertaking has not been implemented within a specified time.8
References
- Office of the Federal Register, Electronic Code of Federal Regulations, 36 CFR 67.7, Standards for rehabilitation, current as of August 2026. https://www.ecfr.gov/current/title-36/chapter-I/part-67/section-67.7 ↩
- Office of the Federal Register, Electronic Code of Federal Regulations, 36 CFR part 68, The Secretary of the Interior's Standards for the Treatment of Historic Properties, sections 68.2 and 68.3, current as of August 2026. https://www.ecfr.gov/current/title-36/chapter-I/part-68 ↩
- Office of the Federal Register, Electronic Code of Federal Regulations, 36 CFR 800.11, Documentation standards, current as of August 2026. https://www.ecfr.gov/current/title-36/chapter-VIII/part-800/section-800.11 ↩
- Office of the Federal Register, Electronic Code of Federal Regulations, 36 CFR 800.5, Assessment of adverse effects, current as of August 2026. https://www.ecfr.gov/current/title-36/chapter-VIII/part-800/section-800.5 ↩
- Office of the Federal Register, Electronic Code of Federal Regulations, 36 CFR 67.4, Certifications of historic significance, current as of August 2026. https://www.ecfr.gov/current/title-36/chapter-I/part-67/section-67.4 ↩
- Office of the Federal Register, Electronic Code of Federal Regulations, 36 CFR 67.6, Certifications of rehabilitation, current as of August 2026. https://www.ecfr.gov/current/title-36/chapter-I/part-67/section-67.6 ↩
- Office of the Federal Register, Electronic Code of Federal Regulations, 36 CFR 800.4, Identification of historic properties, current as of August 2026. https://www.ecfr.gov/current/title-36/chapter-VIII/part-800/section-800.4 ↩
- Office of the Federal Register, Electronic Code of Federal Regulations, 36 CFR 800.6, Resolution of adverse effects, current as of August 2026. https://www.ecfr.gov/current/title-36/chapter-VIII/part-800/section-800.6 ↩
A worked example: Finding Of No Adverse Effect
a draft section 106 finding of no adverse effect, prepared for submission under 36 CFR 800.11(e) and checked against the agency's own record
Section 36 CFR 800.11(e) sets out six items of documentation for a finding of no adverse effect or adverse effect. The general test at 800.11(a) has the agency official ensure that a finding is supported by sufficient documentation to enable any reviewing parties to understand its basis. The criteria at 800.5(a)(1) turn on the integrity of a property's "location, design, setting, materials, workmanship, feeling, or association," which is seven aspects. Among the seven examples at 800.5(a)(2), the second makes alteration an adverse effect where it is not consistent with the Secretary's standards for the treatment of historic properties at 36 CFR part 68. Those standards call for "documentary and physical evidence" to substantiate a replacement, at 68.3(b)(6). The Standards for Rehabilitation at 36 CFR 67.7 are the criteria applied in certifying a rehabilitation for federal tax purposes, and 67.7(b)(6) accepts "documentary, physical, or pictorial evidence." Which characteristics qualify the property, which treatment applies, and what the evidence shows are determinations for the agency and the reviewing office. The extract below records them and is reproduced unchanged in both panels.
Before
SPECIMEN, PREPARED BY EDITFAST FOR ILLUSTRATION. NOT A REAL FILING.
Prepared for the Cargill Street rehabilitation (fictitious), draft finding under 36 CFR 800.5(b)
EXTRACT FROM THE AGENCY'S RECORD (reproduced unchanged in both panels)
AR-1 The undertaking is a federally assisted rehabilitation of one building. The federal involvement is a Department grant.
AR-2 The area of potential effects is the building parcel and the two facing blocks.
AR-3 Identification comprised background research, a records check with the state office, and a field survey.
AR-4 The building is listed in the National Register. Its qualifying characteristics, as determined by the state office, are its 1911 terra cotta facade, its double-height banking hall and its original steel window sash.
AR-5 The treatment is rehabilitation. The state office will review the rehabilitation plans for consistency with 36 CFR part 68.
AR-6 Two consulting parties submitted written views. Both are in the file, and Attachment C summarizes them.
AR-7 The missing cornice is documented by a 1911 construction photograph and by surviving profile fragments recovered on site.
DRAFT FINDING
1. Description of the undertaking. Rehabilitation of the building at 40 Cargill Street. Area of potential effects: the building parcel and the two facing blocks. Photographs, location map and elevation drawings attached.
2. Steps taken to identify historic properties. Background research, a records check with the state office, and a field survey.
3. Effects on historic properties. Interior and exterior rehabilitation, with replacement of the missing cornice.
4. The undertaking will not diminish the integrity of the property's location, design, setting, materials or workmanship.
5. Replacement of the missing cornice will be substantiated by documentary, physical, or pictorial evidence, as required by the Standards for Rehabilitation at 36 CFR 67.7(b)(6).
After
SPECIMEN, PREPARED BY EDITFAST FOR ILLUSTRATION. NOT A REAL FILING.
Prepared for the Cargill Street rehabilitation (fictitious), draft finding under 36 CFR 800.5(b)
EXTRACT FROM THE AGENCY'S RECORD (reproduced unchanged in both panels)
AR-1 The undertaking is a federally assisted rehabilitation of one building. The federal involvement is a Department grant.
AR-2 The area of potential effects is the building parcel and the two facing blocks.
AR-3 Identification comprised background research, a records check with the state office, and a field survey.
AR-4 The building is listed in the National Register. Its qualifying characteristics, as determined by the state office, are its 1911 terra cotta facade, its double-height banking hall and its original steel window sash.
AR-5 The treatment is rehabilitation. The state office will review the rehabilitation plans for consistency with 36 CFR part 68.
AR-6 Two consulting parties submitted written views. Both are in the file, and Attachment C summarizes them.
AR-7 The missing cornice is documented by a 1911 construction photograph and by surviving profile fragments recovered on site.
DRAFT FINDING
1. Description of the undertaking. Rehabilitation of the building at 40 Cargill Street. The federal involvement is a Department grant. Area of potential effects: the building parcel and the two facing blocks. Photographs, location map and elevation drawings attached.
2. Steps taken to identify historic properties. Background research, a records check with the state office, and a field survey.
3. Description of the affected historic property. The building is listed in the National Register. Its qualifying characteristics, as determined by the state office, are its 1911 terra cotta facade, its double-height banking hall and its original steel window sash.
4. Effects on historic properties. Interior and exterior rehabilitation, with replacement of the missing cornice.
5. Explanation of why the criteria of adverse effect were found inapplicable. The undertaking will not diminish the integrity of the property's location, design, setting, materials, workmanship, feeling, or association. Replacement of the missing cornice will be substantiated by documentary and physical evidence, as required by the Standards for the Treatment of Historic Properties at 36 CFR 68.3(b)(6). The state office will review the rehabilitation plans for consistency with those standards.
6. Views of consulting parties. Two consulting parties submitted written views, summarized at Attachment C and reproduced in full in the file.
What changed, and why
| Was | Now | Reason |
|---|---|---|
| Rehabilitation of the building at 40 Cargill Street. Area of potential effects | Rehabilitation of the building at 40 Cargill Street. The federal involvement is a Department grant. Area of potential effects | Paragraph 800.11(e)(1) calls for a description of the undertaking "specifying the Federal involvement." AR-1 records that involvement as a Department grant, and the draft described the work without naming it. |
| 3. Effects on historic properties. | 3. Description of the affected historic property. The building is listed in the National Register. | Paragraph 800.11(e)(3) calls for a description of the affected historic properties, including information on the characteristics that qualify them for the National Register. AR-4 gives those characteristics as determined by the state office. Effects are a separate item, and they move to position four. |
| Interior and exterior rehabilitation, with replacement of the missing cornice. | 4. Effects on historic properties. Interior and exterior rehabilitation, with replacement of the missing cornice. | Paragraph 800.11(e)(4) is the description of the undertaking's effects on historic properties. The text of the item is unchanged and only its position and heading move. |
| 4. The undertaking will not diminish the integrity of the property's location, design, setting, materials or workmanship. | 5. Explanation of why the criteria of adverse effect were found inapplicable. The undertaking will not diminish the integrity of the property's location, design, setting, materials, workmanship, feeling, or association. | The criteria at 800.5(a)(1) name seven aspects of integrity. Five were addressed and two were absent. Paragraph 800.11(e)(5) also asks for an explanation of why the criteria were found applicable or inapplicable, so the item carries that heading. |
| 5. Replacement of the missing cornice will be substantiated by documentary, physical, or pictorial evidence, as required by the Standards for Rehabilitation at 36 CFR 67.7(b)(6). | Replacement of the missing cornice will be substantiated by documentary and physical evidence, as required by the Standards for the Treatment of Historic Properties at 36 CFR 68.3(b)(6). | The second example of adverse effect at 800.5(a)(2)(ii) refers to the standards at 36 CFR part 68, not to the Standards for Rehabilitation at part 67. The two wordings differ, since 67.7(b)(6) reads "documentary, physical, or pictorial evidence" while 68.3(b)(6) reads "documentary and physical evidence." AR-7 records a construction photograph and surviving fragments. |
| (nothing in the draft records the condition on which the finding rests) | The state office will review the rehabilitation plans for consistency with those standards. | Paragraph 800.5(b) allows a finding of no adverse effect where conditions are imposed, and it gives subsequent review of rehabilitation plans by the state or tribal preservation officer as its example. AR-5 records that review, which the draft omitted. |
| (nothing in the draft records the views of consulting parties) | 6. Views of consulting parties. Two consulting parties submitted written views, summarized at Attachment C and reproduced in full in the file. | Paragraph 800.11(e)(6) calls for copies or summaries of any views provided by consulting parties and the public. AR-6 records two sets of views and a summary already in the file. |
Final specimen (PDF, 6 KB) Marked-up specimen (PDF, 8 KB)
Specimen prepared by EditFast for illustration only. Not a real document, record or filing. Any resemblance to an actual organization, person or record is unintended. Not legal, regulatory, clinical or professional advice.
Key Heritage Conservation vocabulary
- Section 106
- National Historic Preservation Act
- Advisory Council on Historic Preservation
- State historic preservation officer
- Tribal historic preservation officer
- Agency official
- Undertaking
- Area of potential effects
- Historic property
- National Register of Historic Places
- Registered historic district
- Certified historic structure
- Contributing property
- Determination of eligibility
- National Register criteria
- Reasonable and good faith effort
- Phased identification and evaluation
- Finding of no historic properties affected
- Criteria of adverse effect
- Finding of no adverse effect
- Adverse effect
- Integrity
- Location, design, setting
- Materials and workmanship
- Feeling and association
- Qualifying characteristics
- Consulting party
- Memorandum of agreement
- Programmatic agreement
- Request for Council comment
- Documentation standards
- Standards for Rehabilitation
- Standards for the Treatment of Historic Properties
- Preservation
- Rehabilitation
- Restoration
- Reconstruction
- Restoration period
- Conjectural feature
- Distinctive feature
- Documentary evidence
- Physical evidence
- Pictorial evidence
- Historic Preservation Certification Application
- Part 1 application
- Part 2 application
- Certification of historic significance
- Certified rehabilitation
- Supporting documentation
- Dismantling and rebuilding
- Mitigation measure
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