
Walnut Creek’s Trusted Kitchen, Bath & Basement Remodeling Experts
For 23+ years, Northwest Builders and Renovation has helped East Bay homeowners transform ranch and Mediterranean-style homes into bright, open, modern spaces β on time and on budget.
- β Licensed & Insured
- β 23+ Years in Business
- β Free Estimates
- β 5-Star Rated
Our Remodeling Services
From quartz-and-shaker kitchens to spa-style baths and finished basements, we handle every phase of your remodel β design, permits, build, and final walkthrough.

Kitchen Remodeling
We build the open-concept kitchens East Bay families love: quartz counters, custom white shaker cabinetry, oversized islands, and seamless flow to your dining and outdoor spaces. Cook, gather, and entertain in a kitchen designed around how you actually live.

Bathroom Remodeling
Turn a dated bath into a bright, spa-style retreat with a curbless walk-in shower, freestanding tub, heated floors, and warm natural light. We manage plumbing, tile, and waterproofing to Contra Costa County code β so it’s beautiful and built to last.

Basement Remodeling
Reclaim your lower level as a media room, guest suite, home office, or in-law unit. We handle egress, insulation, moisture control, and permits, then finish with the warm neutral palettes and recessed lighting that make basements feel like main-floor living.

The East Bay Remodeler Neighbors Recommend
Licensed & Insured
Fully licensed California contractor, bonded and insured β your home and investment are protected on every project.
Free, No-Pressure Estimates
We visit your home, listen to your goals, and deliver a clear written estimate β free, with no obligation.
5-Year Workmanship Warranty
We stand behind our craftsmanship long after the final walkthrough with an industry-leading 5-year warranty.
Local East Bay Crews
Our team lives and works here β we know Walnut Creek homes, local suppliers, and city permit offices inside out.
Our Simple 4-Step Remodeling Process
A remodel shouldn’t be stressful. Here’s exactly how we take your kitchen, bath, or basement from idea to reveal.
Free Consultation
We meet at your home, discuss your wish list and budget, and take measurements. You get a clear written estimate β free.
Design & Planning
We finalize layouts, materials, and finishes, then handle City of Walnut Creek permits and scheduling for you.
Expert Build
Our licensed crew builds to plan with daily cleanup, clear communication, and a dedicated project manager.
Final Walkthrough & Warranty
We walk every detail with you, complete a punch list, and back the work with our 5-year workmanship warranty.
Walnut Creek Remodeling Project Gallery
Real kitchens, bathrooms, and basements we’ve remodeled in ranch and Mediterranean-style homes across the East Bay.








Want results like these in your home?
What East Bay Homeowners Say
We’ve earned our 5-star reputation one kitchen, bath, and basement at a time.
“They opened up our 1970s ranch kitchen into the great room and it completely changed how we live. The quartz island and new lighting make it feel twice as big β finished a week early, too.”
“Our primary bath went from cramped and dated to a true spa retreat with a curbless shower. The crew was respectful, tidy, and handled the permit process so we never had to think about it.”
“Northwest turned our unused basement into a guest suite with a wet bar for my in-laws’ visits. Clear pricing, weekly updates, and the 5-year warranty gave us real peace of mind.”
Proudly Serving Walnut Creek & the East Bay
Northwest Builders and Renovation is headquartered in Walnut Creek, CA, and provides kitchen, bathroom, and basement remodeling throughout Contra Costa County and the greater East Bay, including Concord, Pleasant Hill, Lafayette, Orinda, Moraga, Alamo, Danville, San Ramon, Martinez, and Clayton. If you’re searching for a kitchen remodeling contractor in Walnut Creek or a trusted remodeler anywhere nearby, we’d love to see your project.
Remodeling FAQs for Walnut Creek Homeowners
In the East Bay, most full kitchen remodels run roughly $70,000β$150,000+ depending on size, layout changes, and finishes, while bathroom remodels typically range from $30,000β$75,000. Basement finishing usually falls between $50,000β$120,000. Every home is different, which is why we start with a free in-home estimate and a detailed written scope β no surprises.
Once permits are approved, a typical bathroom takes 3β5 weeks, a kitchen 6β10 weeks, and a basement 8β12 weeks. We build a written schedule before work begins, assign a dedicated project manager, and give you weekly progress updates so you always know what’s next.
Yes β we manage the entire permit process with the City of Walnut Creek and neighboring Contra Costa County jurisdictions, including plan submission and all required inspections. We’re a licensed California contractor, so your project is fully documented and code-compliant, which protects you at resale.
Every project is backed by our 5-year workmanship warranty, in addition to manufacturer warranties on cabinets, fixtures, and appliances. If anything related to our craftsmanship needs attention, we come back and make it right β that’s how we’ve kept a 5-star reputation for 23+ years.
Yes. Many East Bay homeowners finance remodels through home equity lines or renovation loans, and we can also phase larger projects β for example, kitchen first, baths next season β to fit your budget. Ask during your free estimate and we’ll walk you through options and realistic payment schedules tied to project milestones.
Get Your Free Remodeling Quote Today
Tell us about your kitchen, bathroom, or basement project. We’ll get back to you within one business day β usually much faster.
925-407-4616
sales@northwestbnr.com
MonβSat: 8:00 AM β 6:00 PM