Permit Record

Alteration Residential

580 E WILLIAM ST, San Jose, CA 95112

Classification1 & 2 Family Detached Dwellings - Sub-Trades Only - Single-FamilyResidential Alteration
Reliable valueNot in source
ContractorOnzone Heating & Cooling Inc Oleg Nebrat
Permit record
Parties
Contractor
Onzone Heating & Cooling Inc Oleg Nebrat
Applicant
Onzone Heating & Cooling Inc Oleg Nebrat
Owner
DEMCHENKO SERGIY AND TATIANA ET AL
Architect
Not in source
Engineer
Not in source
Contractor license
Not in source
Building & lot · PLUTO
Building class
Not in source
Zoning district
Not in source
Lot area
Not in source
Year built
Not in source
Units (total)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
47229069
Climate zone (IECC)
3C
Roof area (est.)
Not in source
HVAC tonnage (est.)
Not in source
Building type
R
Geocode & dates
Coordinates
Not in source
Geocode confidence
Not in source
Geocode source
Not in source
Issued
2026-06-24
Applied
Not in source
Work class
Residential
Description
Source description

(ME) AC-E,AC,HP/M

Status
Current status
unknown
Source status
E-Complete, M-Complete
Provenance
First seen by PermitCore
Jun 25, 2026 · 12:05 UTC
Last seen
Jul 2, 2026 · 11:59 UTC
Last changed
Jun 25, 2026 · 12:05 UTC
Data-quality checks0 of 12 flagged

0 of 12 data-quality rules flagged anything on this permit.

Checks not flagged

  • Geocode out of bounds
  • Geocode is sentinel
  • Issued date in the future
  • Issued date parse bug
  • Issued date is placeholder
  • Commercial units is placeholder
  • Residential units out of bounds
  • Residential units is placeholder
  • Total units out of bounds
  • Total units is placeholder
  • Valuation out of bounds
  • Valuation is placeholder
Project timeline at this parcel

1 permit at this parcel (parcel 47229069) · 2026-06-24 – 2026-06-24

  1. 2026-06-24This permitAlteration Residential · UnknownOnzone Heating & Cooling Inc Oleg Nebrat

Full permit history at this parcel · as of 2026-06-28.

Other permits by Onzone Heating & Cooling Inc Oleg Nebrat

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Developer details
display_permit_id
2026-124339-RS
canonical_uid
306:2026-124339-RS
source_permit_id
2026-124339-RS
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