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Accessory Dwelling UnitNovatoPermit issued

Detached ADU Project at 673 Atherton Ave, Novato

673 ATHERTON AVE, Novato, 94945

Winston

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Reported project cost

$350,000

As declared on the permit filing. Single Family Dwellings.

Issued
August 13, 2026
Expires
—
License
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What was permitted

Homeowners in Novato are exploring the construction of Accessory Dwelling Units (ADUs), often referred to as granny flats or in-law suites. This permit details a detached ADU project, a popular way to add living space and potentially increase property value.

This permit for a detached ADU at 673 Atherton Ave in Novato has been issued, with work expected to commence soon. The estimated project cost for this type of build can be substantial, reflecting the complexity and scope of adding a separate dwelling.

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Tell us what you have in mind. We scope it, price it against work like this in Novato, 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 number93489
Work permit #—
Job filing number—
Work typeSingle Family Dwellings
StatusIssued
Job descriptionDetached A D U
Floor / unit—
Estimated cost$350,000
ApprovedSeptember 2, 2025
IssuedAugust 13, 2026
Expires—
BBL—
BIN—

Related searches

ADUAccessory Dwelling UnitNovatoMarin CountySingle Family DwellingNew Construction$350,000