Skip to content
General ConstructionAlum RockPermit issued

SFR to Duplex Alterations at 1458 Whitton Av, San Jose

1458 WHITTON AV, Alum Rock, 95116

Winston

Sinra's conciergeOnline now

Planning general construction work near Alum Rock? I’ll scope it, price it, and line up the right pro.

Reported project cost

$67,255

As declared on the permit filing. Additions/Alterations · Duplex.

Issued
November 6, 2026
Expires
—
License
—

What was permitted

This permit outlines significant alterations to convert a single-family residence into a duplex in the Alum Rock neighborhood of San Jose. The project encompassed building, electrical, plumbing, and mechanical work, indicating a substantial renovation.

Issued on November 6, 2026, the estimated cost for this complex conversion project was $67,255. This figure serves as a valuable data point for property owners in Alum Rock contemplating similar multi-unit dwelling conversions.

Plan a similar project

Want work like this done at your place?

Tell us what you have in mind. We scope it, price it against work like this in Alum Rock, and lines up the right contractor. You approve; we handle the back-and-forth.

View the official permit record

Tracking number, work description, cost and dates

Tracking number2025-143777-RS
Work permit #—
Job filing number—
Work typeAdditions/Alterations · Duplex
StatusIssued
Job descriptionBuilding, Electrical, Plumbing, Mechanical work: SFR TO DUPLEX/ALTERATIONS
Floor / unit—
Estimated cost$67,255
Approved—
IssuedNovember 6, 2026
Expires—
BBL—
BIN—

Property owner

Salazares Elmano B And Maria M Trustee

Related searches

duplex conversionAlum RockSan Joseadditions/alterationsmulti-family homebuildingelectricalplumbingmechanical