A finite reference set of official public systems reviewed for jurisdiction, published fields, and caveats. Each linked market page carries its own current source-date and field-availability disclosure.
This is a hand-reviewed reference list of public systems inspected on August 22, 2026. It is not a coverage promise: published fields and jurisdiction rules differ by source. Current record dates and field availability remain on each market’s coverage page.
Carto
City of Philadelphia L&I permits →
Published fields observed: address, permit type, published scope, contractor, owner join, and licence.
Scope note: The published contractor address is street-line only; this source does not publish a valuation field.
Socrata
NYC DOB NOW Approved Permits →
Published fields observed: address, permit type, permittee role, owner as filed, and licence.
Scope note: A permittee is a published permit contact, not necessarily the contractor of record; owner is as filed, not assessor ownership.
Socrata
City of Orlando Permit Applications →
Published fields observed: address, permit type, contractor, published phone, owner, and parcel.
Scope note: Some records have no permit type. Published phone is a research field, not a dial-list claim.
CKAN
Boston ISD Approved Building Permits →
Published fields observed: address, work type, applicant, declared valuation, and parcel.
Scope note: Owner is not published in this permit feed, and valuation is declared rather than assessed.
Socrata
Austin Issued Construction Permits →
Published fields observed: address, permit type, trade, contractor, and published phone.
Scope note: Field coverage varies by cohort. Published phone is shown as source research, not a dial-list promise.
Socrata
East Baton Rouge Parish Building Permits →
Published fields observed: street address, permit type, designation, contractor, owner, applicant, project value, and permit fee.
Scope note: This is a parish-wide construction and occupancy permit source. Contractor, owner, and applicant remain separate published roles; project value and permit fee are separate fields.
Socrata
Published fields observed: address, permit type, permit fee, and published contact roles.
Scope note: Contact identity depends on the source role columns. This permit feed does not publish an owner or project-cost field.
ArcGIS
Published fields observed: address, permit type, contractor, published phone, and owner.
Scope note: Coverage must be evaluated against the source’s low absolute volume, not a broad-market assumption.
Socrata
Published fields observed: address, permit type, published contractors, and owner.
Scope note: The source’s contractor field is plural; multiple firms on a record require role-preserving parsing before any count.
CKAN
Published fields observed: address, permit type, contractor, and owner.
Scope note: Owner availability depends on removing source sentinel values; a non-empty cell alone is not a verified owner.
ArcGIS
Nashville Building Permits Issued →
Published fields observed: address, permit type, declared value, and violations-side owner data.
Scope note: Owner data is published on a separate violations source and is never combined with the permit feed into one statistic.
ArcGIS
Denver residential construction permits →
Published fields observed: address, permit type, contractor, and declared valuation.
Scope note: This is a residential-only layer. HOMEOWNER sentinel values are excluded before contractor coverage is described.
CKAN
Published fields observed: address, permit type, contractor, and owner.
Scope note: The issued-date field is stored as text, so date parsing is guarded before freshness is described.
ArcGIS
Published fields observed: address, permit type, contractor, and owner.
Scope note: The OwnerDoingWork flag is not an owner name and is not treated as one.
ArcGIS
Detroit BSEED Building Permits →
Published fields observed: address, permit type, owner, and estimated job cost.
Scope note: Permit fee and estimated job cost are separate published columns and are never blended.
ArcGIS
Louisville Active Construction Permits →
Published fields observed: address, permit type, and contractor.
Scope note: This is a rolling active-only feed, not a complete history; contractor coverage excludes source sentinels.
Socrata
Published fields observed: address, permit type, and licence number.
Scope note: This source publishes licence numbers but not phone or email fields.
Socrata
Published fields observed: address, permit type, and date.
Scope note: The permit source does not publish contractor, owner, or value fields.
Socrata
Published fields observed: address, permit type, and date.
Scope note: Related violations data includes nearby jurisdictions, so any violation research requires a city-scope filter.
Socrata
San Francisco Building Permits →
Published fields observed: address, permit type, status, and estimated cost.
Scope note: Contractor fields were not verified in this source, so the directory does not infer them.
Need a reproducible publisher check for a selected market? Browse the dated source dossiers →
Pick any city we cover from the city directory. Each city page shows the newest permit date we hold and its public source. Compare those details with the publisher before making a market decision; source availability and published fields vary by jurisdiction.
Read our full methodology → for how each source is collected, deduplicated, classified, and freshness-checked.