National Register of Historic Places Screener — Section 106 & Historic Tax Credit

Batch historic-property due-diligence for a list of coordinates. Give it points (lat/lon), and for each one it screens the National Register of Historic Places (NRHP) — the official National Park Service inventory of ~95,000+ listed historic properties and thousands of historic districts — and returns whether the point is on or near a listed historic property, the nearest listed property (name, resource type, National Historic Landmark flag, NRIS reference number, National Archives document link) with its distance in metres, whether the point falls inside a listed historic district (authoritative point-in-polygon), plus two screening flags: section_106_review_likely (any federal permit / funding / license triggers NHPA Section 106 consultation) and historic_tax_credit_candidate (a listed income-producing building qualifies for the 20% federal Historic Rehabilitation Tax Credit).

One clean, billable row per asset — even when the point is clear of any listing (a useful "no historic constraint" result).

Who it's for

• Phase I ESA / environmental due-diligence consultants — add a cultural-resources / historic-property line to a site assessment without hand-checking the NRHP for every parcel.
• Section 106 / NEPA reviewers, infrastructure & energy developers — flag federally-permitted or federally-funded project sites that sit on or near listed historic properties and will need SHPO/THPO consultation.
• Real-estate developers, architects & CPAs — spot income-producing listed buildings and buildings inside listed districts that may qualify for the 20% federal Historic Rehabilitation Tax Credit.
• Title, land & GIS teams — batch-enrich any address/parcel/coordinate list with authoritative historic-listing status, the nearest listing, and district containment without hosting the national dataset yourself.

Example input

{
  "assets": [
    { "lat": 47.6062, "lon": -122.3321, "label": "Seattle, WA (downtown historic core)", "radius": 1000 },
    { "lat": 39.0000, "lon": -101.5000, "label": "Rural Kansas (control)", "radius": 1000 }
  ],
  "maxAssets": 500,
  "defaultRadiusMeters": 1000
}

The first point returns on_or_near_historic_property: true with a nearby listed property and section_106_review_likely: true; the second returns a clean row (on_or_near_historic_property: false).

Verified sample run

A real 6-site run (2026-07-21, radius: 1000 m) returned 6 rows and 0 errors:

Asset	Nearest listed property	Distance	In district	Section 106 likely
Seattle, WA (downtown historic core)	Rainier Club	31 m	false	true
Boston, MA (Beacon Hill)	Boston Transit Commission Building	110.1 m	true	true
Charleston, SC (historic district)	St. Michael's Episcopal Church	55.9 m	false	true
New Orleans, LA (French Quarter)	Cabildo, The	98.7 m	true	true
Savannah, GA (landmark district)	U.S. Customhouse	48.3 m	true	true
Rural Kansas (control)	no listing found	—	false	false

Note that in_historic_district and proximity are independent signals: Seattle and Charleston sat close to a listed building without falling inside a listed district polygon, while the control point returned a clean, billable "no historic constraint" row rather than an error. This exact run is published as the actor's example task, so you can open it and re-run it as-is.

Output fields (one row per asset)

asset_label, asset_lat, asset_lon, radius_m, on_or_near_historic_property, in_historic_district, historic_district_name, historic_district_nris_ref, nearest_property_name, nearest_property_type, nearest_is_nhl, nearest_nris_ref, nearest_status, nearest_city, nearest_state, nearest_address, nearest_cert_date, nearest_nara_url, nearest_distance_m, listed_count_within_radius, national_historic_landmark_within_radius, section_106_review_likely, historic_tax_credit_candidate, nearby_properties, historic_districts, error, disclaimer, source_url, checked_at.

in_historic_district is an authoritative point-in-polygon test against listed district boundaries. nearest_distance_m and listed_count_within_radius are proximity proxies computed with a haversine distance from each listing's mapped point (which NPS notes can be an approximate coordinate), so treat them as screening signals. nearby_properties lists up to 25 listed properties within the radius; historic_districts lists every listed district containing the point.

Use as an MCP tool

This actor is callable by AI agents (Claude, Cursor, etc.) via mcp.apify.com. Its typed input (assets[]{lat,lon,label,radius}) and field-level output descriptions make it a clean, chainable "is this coordinate on or near a listed historic property, and does it trigger Section 106 or historic-tax-credit review?" tool for site-diligence, permitting, and real-estate agents.

FAQ

Is this coordinate a listed historic place? Read on_or_near_historic_property, in_historic_district, and nearest_distance_m. A point inside a listed district returns in_historic_district: true with the district name and NRIS reference.

What is the nearest listed historic property? nearest_property_name, nearest_property_type, nearest_nris_ref, nearest_is_nhl (National Historic Landmark), nearest_status, nearest_nara_url (National Archives record), and nearest_distance_m.

Will my project need a Section 106 review? section_106_review_likely is true when the point is on or near a listed property. Under Section 106 of the National Historic Preservation Act, any federally permitted, funded, or licensed undertaking that could affect a listed (or eligible) historic property triggers consultation with the State/Tribal Historic Preservation Office. This flag is a screening indicator, not a legal determination.

Could a building here qualify for the historic tax credit? historic_tax_credit_candidate is true when the point is in a listed district or a listed building is within the radius. The 20% federal Historic Rehabilitation Tax Credit applies to certified historic structures that are income-producing buildings — confirm certification with the NPS and your tax advisor.

How current / authoritative is it? This is an informational NRHP proximity screen, not an official Section 106, SHPO/THPO, or tax-credit determination. NRHP listing is only one part of a historic-resources review (archaeological sites, eligible-but-unlisted properties, and local landmarks are not fully covered). Confirm with the State Historic Preservation Office and the National Park Service before any permitting, funding, acquisition, or rehabilitation decision.

Related screeners

This actor is part of a family of single-coordinate federal due-diligence screeners that all take the same assets[]{lat,lon,label} input shape, so you can run several over the same site list and join the results per site.

• Site Due Diligence Bundle — 15 federal overlays for one coordinate in a single call.
• Tribal Land Jurisdiction Screener — reservation / trust land, and whether Section 106 routes through a THPO instead of the SHPO.
• Wild & Scenic River Proximity Screener — designated Wild & Scenic River corridors and Section 7 exposure.
• EPA Contaminated Site Screener — nearest Superfund/NPL and contaminated sites, with a Phase I ESA flag.
• FEMA National Risk Index County Risk Profile — FEMA National Risk Index perils for the site's county and tract.

Source

National Park Service — National Register of Historic Places, published on ArcGIS Online (keyless):

• Points (individual listings): https://services2.arcgis.com/FiaPA4ga0iQKduv3/arcgis/rest/services/nrhp_points_v1/FeatureServer/0
• Districts (polygons): https://services3.arcgis.com/OYP7N6mAJJCyH6hd/arcgis/rest/services/NationalRegisterofHistoricPlaces_Polygon/FeatureServer/0