Best Bathroom Remodeling Contractors in Sonoma (2024)

Our annual ranking of top construction firms highlights the top companies in Sonoma based on their project volume over the past year, with a focus on relevance. This compilation is derived from permit and contractor information sourced from city, county, and state building departments through our partners at BuildZoom. For further information regarding data accuracy, please consult the note at the end of this article.

Many different players in the construction industry can benefit from using construction data in practical ways. Suppliers and service providers, for instance, can track key project phases to understand when general contractors might need materials or support. By watching the progress of large projects and recognizing patterns of business growth, they can time their outreach more effectively. Subcontractors can also take advantage of this information to find general contractors who are active and likely to need help on upcoming projects. At the same time, real estate developers and property owners can use building construction history to evaluate the skills and reliability of contractors. With the help of data analytics in the construction industry and insights from construction market trends, these decisions become easier, more accurate, and better timed.

Giovacchini Construction

Address:
1370 Industrial Ave., Suite G, Petaluma, CA 94952

Giovacchini Construction is a licensed and insured general contracting firm that has been delivering high-quality construction services throughout Marin, Sonoma, and Napa Counties since 1999. With over two decades of experience, the company has earned a solid reputation for craftsmanship, professionalism, and a commitment to client satisfaction. Known for their clean, safe, and well-managed worksites, Giovacchini Construction maintains a highly trained workforce equipped with modern tools and techniques capable of handling a wide range of residential and commercial projects. Their expertise spans general construction, tenant improvements, kitchen and bathroom remodels, concrete and masonry work, electrical upgrades, and mold remediation, among many other services. The company proudly serves a diverse clientele that includes private homeowners, property management firms, homeowner associations, and healthcare providers. Referrals and repeat business make up a significant portion of their project portfolio, reflecting their strong relationships and consistent results. Giovacchini Construction is distinguished by its reliability, timely execution, and ethical approach to building, with each project treated as an opportunity to exceed expectations. Their emphasis on communication and client relationships is as strong as their dedication to quality workmanship. With a long list of satisfied customers and a proven track record, Giovacchini Construction continues to be a trusted choice for general contracting needs across the North Bay.

Data from the City of Sonoma Community Development Department was reviewed by the Home Builder Digest team to track past efforts from Giovacchini Construction. In 2016, the company completed a bathroom remodel that cost $14,261. Then in 2020, they undertook a more extensive bathroom and kitchen upgrade with a budget of $79,000.

AE Contractor, Inc.

Address:
3771 Spring Creek Dr., Santa Rosa, CA 95405

AE Contractor, Inc., based in Santa Rosa, California, has spent the past 10 years building a reputation for excellence in residential and commercial construction services. Specializing in home additions, new construction, and interior remodels, the company is known for its dependable craftsmanship and honest communication throughout every stage of a project. From beautifully remodeled kitchens and bathrooms to spacious basements and custom-built homes, AE Contractor delivers work that blends function with comfort. Clients praise the company for its personalized approach, free estimates, and commitment to making each space feel like home. AE Contractor’s team brings broad expertise to every job, whether it’s a minor renovation or a ground-up build. Their experience with a wide variety of architectural styles ensures that each project reflects the unique needs of the homeowner. With a clear focus on quality and client satisfaction, AE Contractor has become a trusted name in Northern California’s construction industry. The company’s hands-on leadership and responsive service continue to earn repeat business and strong referrals. Homeowners looking for a reliable partner in transforming or expanding their living space consistently turn to AE Contractor for results that last.

The City of Sonoma Community Development Department provided records that allowed the Home Builder Digest team to look into past projects by AE Contractor, Inc. In 2020, the company completed a $129,242 expansion of a home, adding 1,007 square feet that included two bedrooms, two bathrooms, a family room, office, wet bar, and porch. In 2023, AE Contractor, Inc. constructed a 440-square-foot primary garage and a separate 843-square-foot ADU with two bedrooms, one and a half bathrooms, its own 264-square-foot garage, and 32 square feet of porch space, at a total cost of $150,000.

Bartkus Remodel

Address:
843 Garden Ct., Petaluma, CA 94954

Bartkus Remodel is a custom home renovation company that has been serving San Francisco and the surrounding Bay Area since 2004 with a focus on thoughtful design and masterful execution. With over 20 years of experience living and working in the region, the company draws inspiration from the natural beauty and architectural harmony of the Bay Area to deliver renovations that feel both personal and timeless. Bartkus Remodel has earned a reputation for transforming kitchens, bathrooms, and entire interiors into functional and serene living spaces through careful planning and collaboration with homeowners, architects, and engineers. Known for its commitment to craftsmanship, the company handles everything from electrical and plumbing upgrades to finish carpentry, drywall, flooring, and custom additions. Each project begins with listening to the client’s vision, followed by a strategic plan, accurate budgeting, and a transparent schedule that ensures confidence from start to finish. Clients appreciate the company’s clear communication and hands-on approach, which reduces the stress often associated with remodeling. Whether restoring a home after fire or water damage or designing a modern new space, Bartkus Remodel consistently delivers high-quality results tailored to each client’s unique goals. Their passion for building shows in every detail, and their work reflects a deep understanding of the lifestyle and aesthetics of Bay Area living. With a strong foundation in local expertise and a dedication to getting it right the first time, Bartkus Remodel continues to be a trusted name in home renovation.

The Home Builder Digest team reviewed project data from the City of Sonoma Community Development Department to assess the work of Bartkus Remodel. In 2024, the company completed a $90,000 multi-level renovation that added a bathroom on the first floor, remodeled the existing kitchen and bathroom and added a laundry room on the second floor, and introduced a bathroom on the third floor. The following year, in 2025, Bartkus Remodel completed a $77,450 kitchen and bathroom remodel.

Green Bay Remodeling Inc

Address:
1415 Oakland Blvd., Suite 102, Walnut Creek, CA 94596

Green Bay Remodeling Inc is a nationally recognized, full-service design-build contractor known for delivering high-end home remodeling across the San Francisco Bay Area, Austin, Texas, and Southern California. With nearly a decade of steady growth and innovation, the company has earned a place among the Inc. 5000 list of America’s fastest-growing private companies and was ranked as one of the Bay Area’s Top 100 Fastest-Growing Companies by the San Francisco Times. Green Bay Remodeling specializes in kitchens, bathrooms, ADUs, basements, and full home transformations, offering clients a seamless process from concept to completion. With multiple office locations and a centralized platform, the company ensures every client benefits from streamlined communication, personalized project management, and zero-stress execution. Their in-house design studio provides complimentary 3D renderings, allowing clients to visualize their future space before construction begins. Backed by hundreds of five-star reviews on Yelp and Home Advisor, Green Bay Remodeling has built a reputation for exceeding expectations in both quality and customer service. Their dedicated team of designers, contractors, and project managers work collaboratively to meet client goals on time and within budget. The company is also a proud member of the BIA Bay Area and the Marin Builders Association Board of Directors. Known for combining style, functionality, and value, Green Bay Remodeling continues to redefine what it means to deliver accessible luxury in home renovation.

The City of Sonoma Community Development Department provided project data that the Home Builder Digest team used to research work by Green Bay Remodeling Inc. In 2024, the firm completed a $20,000 master bathroom remodel. An earlier project from 2021 included another master bathroom remodel valued at $41,000.

Sightline Builders Inc

Address:
4676 Hessel Rd., Sebastopol, CA 95472

Sightline Builders Inc is a highly experienced residential and commercial contractor with over 29 years of dedicated service throughout Sonoma County, California. Founded by a husband-and-wife team deeply connected to the local community, the company has earned a strong reputation for quality craftsmanship, thoughtful design, and a client-focused approach. Specializing in everything from kitchen and bathroom remodels to ADU construction, decks, and full-scale renovations, Sightline Builders offers comprehensive solutions tailored to each client’s vision. Their preconstruction services, including design consultations, budget estimating, and permit management, ensure smooth and efficient project execution. Known for blending innovation with tradition, Sightline brings both modern style and timeless craftsmanship to every home and business space they touch. Their outdoor decks are designed as lifestyle enhancements, while their ADUs reflect elegant functionality and smart space utilization. The team is passionate about turning concepts into reality and strives to reflect each client’s unique aspirations in their work. With a strong presence in Santa Rosa, Sebastopol, Petaluma, and beyond, Sightline Builders is a trusted name in creating beautiful, lasting spaces. Their commitment to sustainability, customer satisfaction, and local expertise continues to set them apart in the Northern California construction landscape.

The Home Builder Digest team examined permit records from the City of Sonoma Community Development Department to review past work completed by Sightline Builders Inc. In 2018, the company remodeled an existing bathroom in a single-family dwelling for $35,000. Another $35,000 project was completed in 2022, converting a 52-square-foot covered porch into a residential bathroom.

Note: The data used to compile this list may not be complete based on the availability of permit data – collecting and consolidating this data is a time-intensive and difficult task. It may not be complete in all areas due to jurisdictional reporting requirements and the availability of data. Job values and permit fees should be taken as estimates rather than exact values, based on the most complete permit and contractor data available. Additionally, number of projects and typical job size may be updated per contractor request.

The time period for the data used for this ranking was the past 365 days, plus an additional 45 days to account for the average timeline of a building permit. If you have any suggestions on the data or see any corrections that you’d like to give feedback on, please fill out this form. For more insights on construction data outside that are not directly related to contractors, there are other resources available as well.