Trusted General Contractor in Santa Rosa, CA
Sanctuary North, Inc. is a family-owned general contracting firm based in West Santa Rosa. Owner and builder Cooper Esslinger is a long-term local resident and holds CSLB License B #1088186. Whether you're planning a kitchen remodel, a bathroom renovation, a home addition, or an ADU, you get a licensed contractor in Santa Rosa who treats your project like it's his own property on the line. We serve homeowners throughout Sonoma County, Napa County, and Marin County.
Licensed, Bonded, Insured | License # - CLSB License B, #1088186
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Honest Local Craftsmanship
Home Remodeling in Sonoma County Done the Right Way
Sonoma County's older housing stock, from mid-century ranch homes in Santa Rosa to historic cottages in Petaluma, carries real structural risks. Dry rot, moisture damage, and outdated systems are common, and they rarely show up until the walls come open. Sanctuary North treats every demolition phase as a structural investigation. We find what is actually there, fix it properly, and document everything, so you are protected now and when it comes time to sell. That is what home remodeling in Sonoma County should look like.
About Sanctuary North, Inc.
A General Contractor Sonoma County Homeowners Can Count On
Sanctuary North, Inc. was built on a simple belief: a well-built home should hold up over time, and the work behind the walls matters just as much as what you see every day. Cooper Esslinger has spent his entire adult life in the construction trade and brings that depth of experience to every project he leads in Santa Rosa, Petaluma, Windsor, Healdsburg, Rohnert Park, and beyond. We are local, licensed, and we live here too. Cutting corners isn't just bad business; it's personal.
The Sanctuary North Difference
Six Reasons Sonoma County Homeowners Choose Us
From West Santa Rosa to Napa Valley, homeowners trust Sanctuary North because we treat every project as a long-term investment in your property, not a fast turnaround job.
Builder-Led Model
Cooper Esslinger is not a project manager sitting in an office. He is on your job site every day, watching the work, catching issues early, and making sure the finish quality matches the structural quality underneath.
Verified Local License
Sanctuary North holds CSLB Class B General Building Contractor License #1088186. You can verify it directly through the CSLB "Check a License" tool. Licensed, bonded, and insured, with no ambiguity.
Investigation-First Demolition
We treat every demolition phase as a structural investigation. Dry rot, moisture damage, compromised studs, and failed waterproofing get found and corrected before we rebuild, not discovered after the walls are closed.
Documentation for Resale
Every structural repair gets photographed and documented. In California, where the Transfer Disclosure Statement is legally required, our documentation turns a hidden repair into a documented upgrade that protects your equity.
Transparent Planning Ranges
We do not use generic online calculators or give you a best-case number to win the bid. All estimates are presented as honest 2026 planning ranges based on real Sonoma County site conditions and permit realities.
Deep Local Knowledge
Cooper has lived and worked in West Santa Rosa his entire adult life. That means he knows the housing eras, the common failure points in local ranch and mid-century homes, and how Permit Sonoma and city jurisdictions actually operate.
What We Build
General Contracting Services in Sonoma County
Sanctuary North handles four core service areas, each approached with the same infrastructure-first standard. Whether you are remodeling a single bathroom or adding a detached ADU, the structural systems behind the finish work get the same level of attention.
Kitchen Remodeling
We focus on workflow, storage optimization, and durable finish consistency. Every kitchen remodel includes a proper review of what is behind the walls before any new materials go in. Get a Quote
Bathroom Remodeling
Bathrooms are the highest-risk moisture zone in any home. Our technical emphasis is on waterproofing membranes, correct exhaust fan sizing with exterior ducting, and sill plate integrity, not just new tile. Get a Quote
ADUs & Home Additions
Expand your property with a custom ADU or home addition built for comfort, value, and everyday living. We manage planning, permits, structural work, and construction with builder-led oversight from concept through completion together.
Interior & Exterior Remodeling
Transform your home with interior and exterior remodeling tailored to your lifestyle and property. From living spaces to exterior upgrades, we deliver lasting craftsmanship with builder-led oversight from start to finish.
General Contracting
Full-home gut renovations, structural upgrades, and load-path reinforcement for older ranch and mid-century homes throughout Santa Rosa, Petaluma, Windsor, and surrounding Sonoma County communities. Get a Quote
Latest from the blog
What Clients Are Saying
5.0 Stars from Sonoma County Homeowners
Common Questions
Frequently Asked Questions About Working with Sanctuary North
Is Sanctuary North a licensed contractor in California?
Yes. Sanctuary North, Inc. holds CSLB Class B General Building Contractor License #1088186. The firm is also bonded and insured. You can verify the license status at any time using the CSLB "Check a License" tool on the California Contractors State License Board website. This active licensure is one of the key reasons Sonoma County homeowners choose us over unlicensed or out-of-area operators who lack accountability to local jurisdictions.What areas does Sanctuary North serve beyond Santa Rosa?
Our primary service hub is West Santa Rosa, and we work throughout Sonoma County including Petaluma, Windsor, Healdsburg, and Rohnert Park. We also serve Napa County, including Napa Valley, and extend into Marin County for premium residential remodeling projects. If you are in the broader North Bay and want to confirm whether we cover your area, the best step is to reach out directly and talk to Cooper.How much does a bathroom or kitchen remodel typically cost in Sonoma County in 2026?
Costs in Northern California depend heavily on what is found behind the walls during demolition, not just the size of the space. For kitchens, expansion projects in the 400 to 700 square foot range carry 2026 planning ranges of $260,000 to $500,000-plus. Bathroom remodel costs vary based on moisture system requirements, structural conditions, and waterproofing scope. We do not use generic online calculators. Every estimate is a planning range based on your specific site conditions, and we walk you through the reasoning.What is the difference between a JADU, a garage conversion ADU, and a detached ADU?
A Junior ADU (JADU) is typically carved out of existing interior space, such as a bedroom or attached garage, and shares some systems with the main house. Planning ranges run $80,000 to $180,000-plus. A garage conversion turns a detached or attached garage into a full living unit, with costs of $140,000 to $260,000 driven largely by slab moisture correction and full mechanical, electrical, and plumbing build-out. A detached new-build ADU is a standalone structure on your lot, with planning ranges of $280,000 to $500,000-plus due to foundation work, utility trenching, and permitting complexity.Why does Sanctuary North treat demolition as a structural investigation rather than just tear-out?
Sonoma County's older housing stock, especially ranch and mid-century homes, frequently hides dry rot, moisture damage, compromised studs, and failed waterproofing behind finished surfaces. If a contractor closes walls without finding and correcting these conditions, the problems continue to worsen and can create serious legal liability at resale under California's Transfer Disclosure Statement requirements. By treating demolition as a structural investigation, we find what is actually there, fix it properly, and document it, so you are protected both now and in the future.How does Sanctuary North handle permit submissions in Sonoma County?
We manage jurisdiction-specific submittals and revision cycles through the relevant authorities, including Permit Sonoma for unincorporated areas and city-level departments for Santa Rosa and Petaluma. Permit review timelines in Sonoma County typically run 6 to 16-plus weeks depending on the project type and jurisdiction. We set realistic expectations from the start and do not promise timelines that local permitting realities cannot support. Our familiarity with local permit processes is a direct result of working exclusively in this region.Will I be working directly with Cooper throughout the project?
Yes. You work directly with Cooper Esslinger from the first conversation through the final walkthrough. There is no salesperson who disappears after signing, and no crew operating without direct oversight. Cooper is on your job site every day, watching the work and solving problems as they come up. This builder-led model is the core of how Sanctuary North operates and is a primary reason clients consistently give us a 5.0-star rating.Why does documenting structural repairs matter when selling a home in California?
California law requires sellers to complete a Transfer Disclosure Statement (TDS) covering known material defects, including past moisture damage, dry rot, and structural repairs. If repairs were made without documentation, they can appear as undisclosed defects and create legal and financial risk during a sale. Sanctuary North photographs and documents every structural repair, from sistered studs and replaced sill plates to waterproofing membranes. This turns a repair that might otherwise look like a liability into a documented upgrade that gives buyers confidence and protects your equity.
