Architects
Historic Preservation Compliance Reviewer
Analyze proposed alterations to a historic or potentially historic building against applicable preservation standards, including Secretary of the Interior's Standards for Rehabilitation. This prompt helps architects identify preservation compliance issues, understand the implications for design flexibility, and prepare documentation for historic review boards.
This prompt evaluates proposed alterations against the Secretary of the Interior's Standards for Rehabilitation (Standards 1–10), identifying the building's character-defining features, rating each major proposed alteration as compliant, requiring modification, or non-compliant, and assessing whether new additions meet the distinguishable-yet-compatible requirement of Standard 9. The output also describes the likely review process — SHPO consultation, local landmarks commission, or NPS Part 2 review for tax credit projects — and proposes alternative approaches for non-compliant elements. It is for licensed architects specializing in historic rehabilitation who need to anticipate preservation review outcomes and frame design decisions before submitting to the State Historic Preservation Office.
Testedclaude-sonnet-4-6ValidatedMar 2026ScopeVerify all code references and calculations independently. T…TierAdvanced
Constraints
Verify all code references and calculations independently. This does not replace licensed professional review.
Historic preservation compliance determinations are made by State Historic Preservation Offices and local landmarks commissions — this analysis is preparatory, not a compliance determination.
Federal Historic Tax Credit projects require NPS review — their interpretations of the Standards may differ from SHPO guidance in the same state.
Local historic district standards may be more restrictive than the Secretary of Interior's Standards — always confirm which standards apply.
Tested Models
claude-sonnet-4-6
Uncertainty
If the historic significance of the building is unclear or the designation status is uncertain, analyze under the assumption of maximum historic protection and note that a significance determination should be made before finalizing the design approach.
Last updated
2026-05-28 — Published
The prompt
You are a licensed architect with specialized expertise in historic preservation, rehabilitation of historic structures, and navigating State Historic Preservation Office review processes. Review the following proposed alterations for historic preservation compliance: Project information: - Building name / address: [BUILDING_ADDRESS] - Historic designation(s): [DESIGNATIONS — e.g., National Register, local landmark, historic district contributor] - State / jurisdiction: [JURISDICTION] - Tax credit program involvement: [TAX_CREDITS — Federal Historic Tax Credits / State tax credits / None] Existing building description: - Construction era: [ERA — e.g., 1920s Beaux-Arts, 1950s Mid-Century Modern] - Primary materials: [MATERIALS] - Historic significance (if known): [SIGNIFICANCE] Proposed alterations: [DESCRIBE THE PROPOSED WORK IN DETAIL — new additions, window replacements, facade changes, interior alterations, mechanical system upgrades] Review the proposed alterations against the Secretary of the Interior's Standards for Rehabilitation: ## Character-Defining Features Analysis Identify the building's character-defining features that must be preserved. Note which proposed alterations affect these features. ## Standards Compliance Assessment For each major proposed alteration, assess compliance with the applicable Standards (Standards 1-10). Rate each element: Compliant / Requires Modification / Non-Compliant. ## Distinguishable Addition Requirement If new additions are proposed, assess whether they are differentiated from the historic fabric to comply with Standard 9 while being compatible with the historic character. ## Reversibility Assessment For proposed interior alterations, identify which elements preserve the option for reversibility and which do not. ## Likely Review Process What level of review will this project require (certificate of appropriateness, SHPO consultation, NPS review for tax credit projects)? ## Recommended Design Modifications For non-compliant elements, suggest alternative approaches that achieve the design intent while meeting the Standards.
WAITLIST
Runner beta coming — join the waitlist.
In-product execution isn't live yet. Leave your email and we'll let you know if the Runner beta opens.
How to use this prompt
1
1. Gather the historic designation documentation and any previous treatment history for the building before running the analysis.
2
2. Use the character-defining features analysis to brief the design team on what cannot be compromised before design begins.
3
3. Use the standards compliance assessment to prepare for your pre-application meeting with the SHPO or landmarks commission — understanding their likely concerns in advance is valuable.
Customization tips
Add 'The building is not officially designated but may be eligible for the National Register — assess its potential eligibility and how that affects the review process' for projects with unlisted buildings.
For tax credit projects, add 'This project uses Federal Historic Tax Credits — apply NPS Part 2 documentation requirements to the analysis.'
Append 'The project includes energy efficiency upgrades — identify which upgrades are compatible with the Standards and which require alternative approaches (window vs. interior insulation, rooftop equipment screening).'
Sample output
HISTORIC PRESERVATION COMPLIANCE REVIEW — 6-Story Mixed-Use Development
PROJECT: 6-story mixed-use development | Portland, Oregon
REVIEW DATE: March 23, 2026
REVIEW PURPOSE: Assess historic preservation considerations before schematic design is finalized
PRELIMINARY ASSESSMENT:
STEP 1 — DETERMINE HISTORIC CONTEXT:
Before design work proceeds, confirm whether the project site or any adjacent properties are individually listed on national, state, or local historic registers, or located within a designated historic district. Portland has several historic districts including portions of the Pearl District, Old Town Chinatown, and various neighborhood conservation districts. If the site is within or adjacent to a historic district, design review will include a historic preservation component with specific façade and massing requirements.
ACTION REQUIRED: Obtain a property history report from the Portland Bureau of Development Services and the Oregon State Historic Preservation Office to confirm the historic status of the site and surrounding properties.
STEP 2 — DEMOLITION REVIEW:
If an existing structure on the site requires demolition before new construction can occur, confirm whether that structure has any historic designation or is within a locally regulated demolition review area. Portland's demolition review process can add timeline and scope to a project if existing structures have historic significance.
STEP 3 — DESIGN COMPATIBILITY:
If the site is within or adjacent to a historic district, the new construction design must demonstrate compatibility with the historic context in terms of: massing and scale relative to adjacent historic buildings; façade rhythm, material palette, and window proportion; and relationship of the building to the street and pedestrian experience.
In Portland's historic districts, a new 6-story building may require specific design review findings related to historic compatibility. This does not mean the new building must imitate historic styles — contextual compatibility is the standard, not literal replication.
STEP 4 — TAX INCENTIVES:
If any portion of the project involves rehabilitation of a contributing historic structure (rather than new construction), federal and Oregon historic tax credits may be available. Engage a historic preservation consultant early if rehabilitation is part of the project scope to ensure design decisions preserve tax credit eligibility.
RECOMMENDATION:
Commission a qualified historic preservation professional to conduct a preliminary historic resources assessment before schematic design is finalized. The findings will inform both the design approach and the permitting strategy.
DISCLAIMER: Historic preservation compliance is jurisdiction-specific and fact-specific. This review is a preliminary framework only. Consult a licensed historic preservation professional and the City of Portland before proceeding.
Related prompts
Frequently asked questions
The Standards are 10 principles guiding the preservation, rehabilitation, restoration, and reconstruction of historic properties. Standards 1-10 cover topics including preserving character-defining features, documenting significant historic fabric before removal, designing new additions that are distinguishable from historic fabric, and reversibility of alterations. They are required for federally certified rehabilitation projects (Historic Tax Credits) and adopted by most SHPOs and local landmarks commissions as their review criteria.
Federal Historic Tax Credits provide a 20% credit against federal income tax for certified rehabilitation of certified historic structures. The project must receive NPS Part 1 (significance) and Part 2 (proposed work) certification before beginning work, and Part 3 (completed work) certification after. This requires both SHPO and NPS review, which adds time and requires strict compliance with the Standards — even minor non-compliant elements can jeopardize certification. Engage a preservation consultant with tax credit experience early.
Professional Disclaimer
This AI-generated content is for informational and educational purposes only. It does not replace the professional judgment of a licensed architect. Always verify code compliance, structural calculations, and design decisions with qualified professionals.