Full & Partial Home Remodels
Complete transformations or focused updates—including kitchens, bathrooms, living areas, and exterior spaces.
925-995-9401Remodels • ADUs • Home Additions
Build the home
you’ve been imagining.
Big Door Construction brings careful planning, dependable craftsmanship, and personal attention to every project.
Quality Work Honest Communication Built to Last
What we do
One trusted team.
Every detail handled.
From a focused room update to a full-home remodel, ADU, or addition, we coordinate the work carefully and keep you informed from start to finish.
ADU Specialists
Thoughtfully planned accessory dwelling units built for family, flexibility, and long-term property value.
Home Additions
Well-integrated new space designed and built to feel like it has always belonged to your home.
Built around your circumstances
Every challenge has
a way forward.
Space, budget, and timing should shape a smart solution—not stop your project before it begins.
If space is the challenge
We’ll help you find the right solution—from a more functional remodel to a thoughtfully designed addition or ADU.
If budget is the concern
We work with trusted suppliers and practical material options to help your investment go further.
If timing is critical
Ask us about flexible scheduling, including select weekends, holidays, and night shifts when the project allows.
Selected projects
Real work. Real homes.
Built with purpose.
A selection of remodeling, addition, and outdoor-living projects completed by the Big Door team.
Bay Area county map by Mliu92, CC BY-SA 4.0Where we build
Serving the Bay Area
and nearby communities.
Big Door Construction Company brings dependable remodeling, ADU, and home-addition expertise to homeowners throughout these counties:
Contra Costa CountyAlameda CountySanta Clara CountySan Joaquin CountySan Mateo CountySan Francisco CountySanta Cruz County
Not sure if your property is within our service area? Call us—we’ll be glad to discuss your location and project.
Check your project location
Felix ArjonaFounder & Contractor
Meet the founder
Building differently,
since day one.
Felix Arjona began working in construction in 2001. While working for other contractors, he saw opportunities to improve the way projects were managed and how clients were treated—but he did not yet have the authority to make those changes.
On January 19, 2019, Felix decided it was time to build a company around a better standard. He earned his contractor’s license and founded Big Door Construction Company with one purpose: to transform lives by helping people build their dreams.
“Every client has a different dream and a different purpose. My purpose is to make that dream a reality. On every job, I become my client’s partner, guide the project on their behalf, and treat them like family. Thank you for the opportunity.”
- Clear communication
- Quality craftsmanship
- Respect for your home
- A commitment to finishing well
Request an estimate
Tell us about
your project.
Share a few details and the Big Door team will contact you to discuss your goals, timing, and next steps.
Prefer to talk now?925-995-9401
A straightforward process
From first conversation to final walkthrough.
Tell us your vision
Call us and share what you want to change, repair, or create.
Plan the work
We review the project, discuss options, and prepare a clear estimate.
Build with care
Our team completes the work with consistent communication and craftsmanship.
Let’s build something better
Ready to open the door
to your next project?
Contact Big Door Construction Company to discuss your project and request an estimate.