Business Details
44 Years
experience
Your Trusted Partner for Construction and Remodeling Solutions
Founded in 1982 by John Hagenbach, our company has built a reputation for excellence in residential and commercial construction across the East Bay. With 38 years of hands-on experience, we specialize in new home construction, room additions, ADUs, and full-scale remodeling projects. Our commitment to quality craftsmanship and client satisfaction has driven our growth while maintaining a stress-free, professional approach. We prioritize safety and organization on every job site, ensuring optimal conditions for both our team and clients.Our services include pre-construction planning, detailed cost estimation, and tailored contractual arrangements to meet individual project needs. Backed by a team of over 20 professionals, we combine technical expertise with personalized service to deliver results that exceed expectations. Our focus on transparency, ethical practices, and community values has earned us lasting trust in the Bay Area construction industry.
Services
New Home Construction
Room Additions
ADUs & Casitas
Kitchen Remodels
Bathroom Remodels
Details
- Year established: 1982
Highlights and features
- We offer 38 years of hands-on experience in Bay Area construction projects.
- Our pre-construction services include detailed cost estimation and project planning.
- We maintain rigorous safety standards for all job site personnel and clients.
- Our team provides localized expertise across 10+ Bay Area communities.
- We guarantee transparent communication and budget adherence for every project.
Associations and certifications
- CSLB# B-426275
What people say
Exceeded expectations
Exceptional workmanship
Transparent communication
Stress-free process
On-time delivery
Services
New Home Construction
We build custom residential and commercial properties from foundation to finish. Our process combines architectural precision with client-specific needs, ensuring energy-efficient, code-compliant structures. With decades of experience in Bay Area construction, we manage every phase while maintaining transparent communication and budget control.
Room Additions
Our room addition services create functional living spaces tailored to your lifestyle. We handle permits, structural integration, and finish work while minimizing disruption to existing spaces. Clients receive detailed planning support to maximize both utility and property value through strategic expansions.
ADUs & Casitas
We design and construct accessory dwelling units that meet California's specific regulations. Our team optimizes space efficiency while ensuring code compliance for standalone or attached units. Projects include complete plumbing, electrical, and finish work to create fully functional living spaces.
Kitchen Remodels
Our kitchen renovations combine aesthetic appeal with practical functionality. We handle cabinet refacing, countertop installation, and layout reconfiguration while maintaining structural integrity. Clients benefit from material selection guidance and precise execution of complex elements like custom tile work.
Bathroom Remodels
We transform bathrooms with modern fixtures, efficient layouts, and durable materials. Our process includes waterproofing, plumbing updates, and custom tile installation. Each project balances design aesthetics with practical considerations for long-term usability and increased property value.
People
John Hagenbach
Owner
With 38 years of Bay Area construction experience, John founded Hagenbach Construction in 1982. He oversees all projects personally, ensuring quality craftsmanship and client satisfaction through direct involvement in design and execution phases.
Questions
What construction services does Hagenbach offer?
We specialize in new home construction, room additions, ADUs, and full kitchen/bathroom remodels with personalized pre-construction planning.
Which areas do you serve?
We operate throughout the Bay Area including Fremont, Walnut Creek, Oakland, Berkeley, and San Francisco.
How do you ensure project quality?
Our quality control combines experienced crews, safety-focused job sites, and regular client communication throughout the construction process.
Can you handle complex remodeling projects?
Yes, we've completed intricate projects involving structural changes, custom tile work, and multi-room renovations with precision.
What safety measures do you implement?
We maintain strict safety protocols including organized job sites, proper equipment, and regular training for all crew members.
Reviews (2)
Nick Watts
Nov 21, 2020
Report
Positive:Quality
I've personally worked with Hagenbach Construction personnelly over the years. I found the company to have some of the best quality people and quality craftsmanship with great service to back it up!
I've personally worked with Hagenbach Construction personnelly over the years. I found the company to have some of the best quality people and quality craftsmanship with great service to back it up!
Michael Chen
Oct 11, 2019
Report
This is my first Yelp review and it is way overdue. We bought a fixer-upper (built in early 70s, original) and was in search of a contractor to do a full interior remodel of our house sometime last year. We interviewed John and three others (searching for trustworthy partner with great quality craftsmanship at reasonable price, not the lowest.. but fair). John was reasonable with his pricing, but most importantly, John came across as an honest and trustworthy man (with emphasis, gentlemen's handshake type of guy), straight forward, very knowledgeable, transparent, and not afraid to speak his mind
