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General ConstructionFairfaxPermit issued

Accessory Dwelling Unit at 45 Bosque Ave, Fairfax

45 BOSQUE AVE, Fairfax, 94930

Winston

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Reported project cost

$560,000

As declared on the permit filing. Single Family Dwellings.

Issued
May 5, 2026
Expires
—
License
—

What was permitted

This permit details the construction of a new Accessory Dwelling Unit (ADU) at 45 Bosque Ave in Fairfax, offering insights into the cost of adding secondary housing on a property. The project also includes the installation of decks, retaining walls, and a spa.

The estimated cost for this new ADU project is $560,000, with the permit issued on May 5, 2026. MORGAN KEY HAMMON CONSTRUCTION is handling the construction.

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View the official permit record

Tracking number, work description, cost and dates

Tracking number92460
Work permit #—
Job filing number—
Work typeSingle Family Dwellings
StatusIssued
Job descriptionNew Det A D U; Decks; Ret Walls; Spa
Floor / unit—
Estimated cost$560,000
ApprovedJuly 31, 2024
IssuedMay 5, 2026
Expires—
BBL—
BIN—

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