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Location and Projects

Address
215 SUNNLYSLOPE AVE, Petaluma, CA, 94952
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Underscore Design & Build Construction

Underscore Design & Build, 215 Sunnlyslope Ave, Petaluma, CA (Employee: William Weil Stark) holds a General Building license according to the California license board.

Their BuildZoom score of 96 ranks in the top 20% of 336,931 California licensed contractors.

Their license was verified as active when we last checked. If you are thinking of hiring Underscore Design & Build, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.

Underscore Design & Build Contact Information

Phone: (216) 798-5858 Edit
Address: 215 SUNNLYSLOPE AVE, Petaluma, CA 94952 Edit

Underscore Design & Build Petaluma

Quality

96
80th percentile
Pro tip: We generally recommend hiring a contractor with a score higher than 95.
Underscore Design & Build has a BuildZoom score of 96, which places them above 80% of 336,931 contractors in California.

Activity

2 projects
2025
Our building permit records indicate that Underscore Design & Build has worked on at least 2.0 projects over the past year.

This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.

Pricing

2 projects
$100k-$250k
Value Not Public: 0 projects
Pro tip: For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.

Building Permits by Underscore Design & Build

Sort by: Notable Notable | Date Date | Job Value Job Value
Residential alteration remodel repair
2025-03-24
Residential remodel addition to a single family home consisting of converting the existing garage into living space complete with a family room storage area and master bedroom suite. remodeling the kitchen and adjacent areas to create an open floor plan revised laundry room and revised office. replacing the existing roof structure over the existing garage and a small addition on the b... see more
Valuation:
$210,000
Permit #:
BLDR-2024-0302
Status:
issued
Fee:
$8,110
Permit Type:
N/A
Building Type:
N/A
B alterations or additions
2025-08-04
Addition on 225 sqft. to the rear of the house for new primary bedroom. turn one existing bedroom into
Valuation:
$150,000
Permit #:
B2025-0595
Status:
issued
Fee:
$6,484
Permit Type:
Residential
Building Type:
N/A

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