Bay Area Architects: Need a Reliable ADU Builder?
We collaborate with residential architects who want reliable execution, clear communication, and protection of their design integrity.
We respond within one business day.
Why Architects Work With Us
When you introduce a client to a builder, your professional credibility is directly connected to the outcome. We approach every project with that responsibility in mind.
Structured Intake and Client Qualification
Direct, Consistent Updates
Realistic Budgets and Timeline Alignment
Early Transparency if Project isn’t Construction-Ready
Organized, Accountable Project Execution
Our Process
Structured ADU construction partnerships defined by disciplined execution, design integrity, and long-term alignment.
Introduction & Alignment
We meet to understand your firm’s design approach, project types, client profile, and preferred collaboration structure.
Project Referral
When a client is ready for construction, you introduce us. We manage structured intake, initial qualification, and contractor-side coordination.
Construction Review & Feasibility
We meet directly with the client to review feasibility, scope, budget, and realistic timelines, keeping you informed at each stage.
Permitting & Construction Execution
We oversee permitting, engineering coordination, and field execution while preserving your design intent and protecting your reputation.
Delivery & Ongoing Collaboration
We complete the project with disciplined oversight and clear closeout procedures, building a foundation for continued collaboration.
Transparent Referral Structure
For projects introduced to us that proceed into construction, we offer a structured referral arrangement:
Two percent of the total construction contract, capped at $10,000 per project.
All payments are documented and processed professionally.
Our focus remains long-term architectural partnerships built on trust and performance.
Elie AlChaer
Founder & Licensed General Contractor
Meet Our Founder
Elie AlChaer is the founder of ADU San Mateo. He spent his career delivering over $2 billion in commercial and luxury construction across the Bay Area and Dubai, and is a licensed California general contractor.
He started ADU San Mateo after watching too many homeowners hire cheap and pay for it twice: blown timelines, rework, budgets that unravel. His answer was to study the entire ADU process end to end and break it into phases, so you only commit to what moves your project forward, one step at a time.
Testimonials & Reviews
Real reviews from Bay Area homeowners we’ve built for.
“I am so happy to find ADU San Mateo. The crew are nice, professional, doing a great job while pay attention to details, all with a good price. Highly recommend!”
“Finished work in a timely fashion. Quick to respond.”
“Excellent service highly recommended”
“ADU San Mateo went above and beyond our expectations. They were with us every step of the project, making the experience easy and headache free. ADU San Mateo has great attention to detail and abundance of carpentry knowledge. They always answered our calls and ensured the job site was clean and safe before ending the workday. The team was very professional, clean, and respectful. We contracted ADU San Mateo to build our ADU unit and cannot be happier with the outcome. Would definitely recommend to anyone looking for cost-effective get it right the first time company. Definitely would use for our future projects.”
“Dependable, responsive, quality workmanship and dedication to getting the project completed timely and on or under budget. They treated our home as if it was their own. The outcome exceeded my expectations. Would recommend to my friends and family.”
“I would highly recommend ADU San Mateo to all my friends and family. The crew is efficient, polite and hardworking. They are easy to work with and very competitive with pricing. We would definitely recommend and hire again for future projects.”
“Such exceptional work done, I am beyond pleased with the results! Paid close attention to detail and I was always kept informed. High quality work and excellent service gave us the results we expected. I was completely impressed with their professionalism and customer service. I highly recommend this business!”
“I HIGHLY recommend Eli and his team for any home remodeling projects. They did my staircase and completely did what I have envisioned. I am a perfectionist, so I am glad I met them. They are very detailed oriented, very punctual, and there were no delays. He advised me what’s the best route, up to code, and provided recommendations tweaks on my design. I provided a 3D rough draft sketch to them, the measurements were 100% accurate. I can guarantee you that you won’t be disappointed, as I went through roughly 10 contractors and FINALLY found the right team. I am looking forward to seeing how my kitchen tiles turn out.”
“They were responsive and efficient and easy to work with.”
Let’s Work Together
Tell us about your firm. We respond within one business day.
(650) 200-2040 · Monday to Friday 8AM-6PM