Residential Foundation-Only

What it covers

Residential foundation-only permits cover the very earliest phase of residential construction — foundation excavation, footings, and slab work filed separately from the superstructure. Often a precursor to a follow-up Residential New (Single-Family) permit on the same parcel. Useful for tracking groundbreaking activity 4-8 weeks ahead of the full construction permit.

How a permit lands in Residential Foundation-Only.

Every silver permit flows through a two-stage classifier. The deterministic stage maps the structured signals — work_class, the normalized permit type, and the building sub-type — into the segment vocabulary where the mapping is unambiguous. The machine-learning stage handles the cases that aren't direct lookups: multi-vocab permit-type strings, ambiguous occupancy spans, and jurisdictions that bundle categories. The segment is the classifier's output, the same axis across every metro — so residential_foundation_only means the same thing in NYC as in LA even though the upstream jurisdictions emit completely different raw permit-type strings.

When the signal genuinely isn't there, we say so. A row with no assignable segment degrades honestly — to its work-nature, then to its raw source type, and only to “Unclassified” when truly nothing is known. We never guess a segment to fill a gap; an honest Unclassified is the floor, and field-level data-quality flags surface when the classifier had low confidence. That restraint is the point — the classification is only worth selling on if the “don't know” is honest.

Residential Foundation-Only by metro

Where residential foundation-only permits are classified today, ranked by volume. Metros with recent activity link straight into the live browse; the rest show their all-time classified count.

• New York City →4,990
• Louisville →144

Recent residential foundation-only permits

Real permits classified into Residential Foundation-Only in the last 30 days.

• AddressTypeValueIssuedMetro
• 80-11 90 AVENUEFoundation / Only$611K2026-07-01New York City
• 80-11 90 AVENUEFoundation / Only$611K2026-07-01New York City
• 2873 VALENTINE AVENUEFoundation / Only—2026-07-01New York City
• 80-11 90 AVENUEFoundation / Only$611K2026-07-01New York City
• 11123 INSIGHT DRFoundation / Only$24K2026-07-01Louisville
• 910 RUGBY PLFoundation / Only$12026-06-30Louisville

Who tracks Residential Foundation-Only.

Residential Foundation-Only is a sales-intelligence segment for manufacturers and distributors selling into residential remodels and new homes. Filter it by metro, rank the contractors pulling these permits, and see the projects worth selling into — the same way across every covered market.