Contractors winning Commercial Alteration in San Jose
Ranked by permit volume · 1,334 filings| # | Contractor | Permits | Reliable value | 90d |
|---|---|---|---|---|
| 1 | DEVCON CONSTRUCTION | 12 | ≈$177M | +150% |
| 2 | LEVEL 10 CONSTRUCTION | 11 | ≈$197M | -40% |
| 3 | NINGZHI HU NINGZHI HU | 11 | — | 0% |
| 4 | BILT RITE INC MIN HO LEE | 9 | ≈$18K | -100% |
| 5 | STATEWIDE ROOFING, LLC Project Admin | 9 | ≈$3.5M | -20% |
| 6 | LEGACY ROOFING & WATERPROOFING, INC. BERNARD AFFRUNTI | 5 | ≈$3.7M | +250% |
| 7 | HAMILTON, BILL Bill Hamilton | 3 | ≈$416K | +167% |
The ranked list continues — reliable values and contacts for all 25 contractors in this segment.See the full leaderboard →
Contractors with too few reliable filings to stand behind a value still rank by volume — their value shows —, never a fabricated number.
90-day movers
- ALL SEASONS ROOFING SERVICE+1200%
- QMERIT ELECTRIFICATION LLC MATT TROUT+400%
- LEGACY ROOFING & WATERPROOFING, INC. BERNARD AFFRUNTI+250%
- HAMILTON, BILL Bill Hamilton+167%
- DEVCON CONSTRUCTION+150%
- DALCON INC David Lee+80%
- NINGZHI HU NINGZHI HU0%
- STATEWIDE ROOFING, LLC Project Admin-20%
1 more — too few recent filings to score.
What’s in the full list
- Every contractor ranked by reliable value
- Recent projects + permit-level detail per contractor
- Nightly alerts when a new filing lands
- CRM-ready export — enriched + parcel-joined
Free to explore — no card.
Why this list is real
These contractors are ranked from classified permits, not keyword scrapes. We read each permit’s work-type, scope, and occupancy fields to place it in Commercial Alteration — so a filing that looks like a generic alteration lands in the right segment, and the ranking reflects real work. When the fields don’t support a confident call we mark it Unclassified — we never force a wrong segment to pad a contractor’s count.
How we classify →Get the full Commercial Alteration target list for San Jose.
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Other segments in San Jose
- Residential Alteration10,889
- Residential Solar1,576
Commercial Alteration in other metros
FAQ
Frequently asked about commercial alteration permits in San Jose
- How many commercial alteration permits are pulled in San Jose each year?
- 1,334 commercial alteration permits are currently indexed for San Jose. Volume varies year over year; PermitCore tracks both historical totals and current rolling-window activity.
- Where can I see the latest commercial alteration permits in San Jose?
- The grid above shows the most recent commercial alteration permits in San Jose, paginated 25 per page. For programmatic access — filter by cohort, by date range, by contractor — use the PermitCore API or download via the Market Explorer.
- How is the commercial alteration data in San Jose refreshed?
- San Jose permit data is refreshed daily from the city's open-data portal. Segment classification is applied automatically by PermitCore's classification engine; field-level data-quality flags surface inline so you can filter for clean rows.
- Can I export San Jose commercial alteration permits?
- Yes — the free tier includes 5K rows of CSV export per month. Paid tiers expand to Parquet export, 50K-2M rows, and webhook delivery on new commercial alteration permit filings.