Underscore Design + Build
Underscore Design + Build is a general contractor based in Petaluma and focused on modernizing Sonoma County's vintage homes. Its project scope ranges from small repairs to full ADUs.
Business Highlights
- Underscore is a family-oriented business.
Service Area
Sonoma County and Petaluma.
Featured on ProsGrade. Underscore Design + Build is one of 5 renovation contractors ProsGrade lists in Petaluma, California.
6 services listed, including Kitchen and bath remodels and design, ADUs and Additions. Open weekdays, closed on weekends. Rated 5.0 from 10 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How Underscore Design + Build compares with the other 4 renovation contractors on ProsGrade in Petaluma, using public Google ratings and review counts.
- Ranks in the top half of the 5 Petaluma renovation contractors on ProsGrade by Google rating and review volume.
- Rated 5.0 on Google, at or above the 4.8 average of other Petaluma renovation contractors on ProsGrade.
- One of 5 Petaluma renovation contractors on ProsGrade rated 4.7 or higher from at least 10 reviews.
Services Covered
6 services- Kitchen and bath remodels and design
- ADUs
- Additions
- New construction
- Small repairs
- Design/build auditsProject vision and budget alignment from the start
Reviews
What customers say
Customers praise Bill's communication and attention to detail. One customer credits his problem-solving and eye for quality with bringing a project in on budget.
Customer Reviews
mathieu isaacs
Stephanie Franco
Write a Review
Share your experience with this business. Reviews are moderated before they appear publicly.
Frequently Asked Questions
Does Underscore handle county permits?
On one customer's project, Bill handled the county permitting and payments.








