McMahon Fernandez

Construction, Inc

Quality Construcion In Sonoma
From excavation to concrete and landscaping, MFC Construction delivers expert-built solutions that stand the test of time. Call today to get started on your residential or commercial project — (707) 756-0113.
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Reliable Construction Services in Sonoma, CA
Welcome to MFC Construction Inc.

McMahon Fernandez Construction has over 40 years of combined experience in the construction industry. Our projects range from the very small to multi-million dollar builds. MFC works directly with homeowners and/or with general contractors to complete projects while maintaining a professional, reliable and safe outcome. While our main focus is concrete work, grading, and excavating, we do partner with other trade contractors to ensure entire jobs are covered start to finish. We are licensed with Class A - General Engineering and C-36 Plumbing, fully bonded and insured.

MFC will be there to provide design advice and trade recommendations before and during the construction phase. We pride ourselves in accommodating and coordinating changes and new ideas during the course of construction, even at the last minute! MFC is located in Sonoma Valley but our field of work stretches across the North Bay. We have completed many projects in San Francisco, Marin, Napa and other locations as well. Fill out the contact form below to learn more about how we can help you with your upcoming project.
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Comprehensive Construction Solutions For Every Project Need

 

Excavation work 1

Ground Work

We provide expert excavation, grading, trenching, and site prep to set the stage for successful construction. Every job begins with solid groundwork, executed safely, cleanly, and to exact project specs.
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Concrete prep work 2

Concrete

From foundations and slabs to driveways, patios, and pool decks, our concrete work is built to last. We combine expert forming and finishing with durable materials to deliver clean, strong results on every project.
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Subsurface

We handle all underground work with precision, including septic systems and utility pipeline installation. Our team ensures each system is installed correctly, safely, and to code from the ground up.
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Concrete prep work 2

Landscaping

Our landscaping services cover full site prep, plant installation, irrigation systems, and artificial turf. We create outdoor spaces that are as functional as they are beautiful, built to thrive in local conditions.
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Expanding Possibilities with Our Wide Range of Equipment Options
 

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✓ Ground Work
✓ Excavating & Spoils Removal
✓ Grading & Trenching
✓ Site Preparations
✓ Retaining Walls
✓ Concrete Foundations & Slabs
✓ Driveways & Sidewalks
✓ Sidewalk Construction
✓ Patios & Pool Decks
✓ Paver Installation
✓ Stamped Concrete
✓ Concrete Demolition & Removal
✓ Septic System Installation
✓ Utility Pipeline Trenching
✓ Water & Sewer Line Prep
✓ Drainage Solutions
✓ Landscaping Site Prep
✓ Plant Installation
✓ Irrigation Systems
✓ Pond Installation
✓ Artificial Turf Installation
✓ Erosion Control
✓ Jobsite Cleanup & Spoils Hauling
✓ Direct Access to Project Leads

Ready to Elevate Your Projects?
Expert Excavation, Concrete, and Landscaping Services in Sonoma, CA

Call John or Jose today and get your project started with MFC Construction Inc.
— trusted local builders who deliver.
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Testimonials & Reviews
What People are Saying

“MFC Construction handled our grading and retaining wall project with total professionalism. From the first call to final inspection, they were organized, on time, and kept the site clean. I wouldn’t hesitate to hire them again.”
— Kathy M., Sonoma, CA
“We hired MFC for foundation and flatwork on our custom home. John and Jose were knowledgeable and responsive, and their crew delivered top-quality work. Everything passed inspection without a single issue.”
— Rick F., Glen Ellen, CA
“After struggling with drainage problems for years, MFC came in and completely reworked our septic and utility lines. They explained every step and did a great job. Our yard is finally dry!”
— Lena G., Petaluma, CA
“We needed excavation, trenching, and concrete pads for a new pool and patio. MFC took care of everything. Great communication, fair pricing, and reliable work. Highly recommend for any outdoor construction.”
— Mark J., Santa Rosa, CA

Ready to break ground on your next project?

At MFC Construction Inc., we’re here to make the process easy, transparent, and built to last. Whether you're planning site preparation, new foundations, septic systems, or landscaping improvements, our experienced Sonoma-based team is ready to help. With over 40 years of combined field experience, we understand how to bring precision and efficiency to every stage of construction — residential or small-scale commercial.

Fill out the form below to tell us more about your project, and a member of our team will be in touch shortly. Prefer a direct conversation? Call John McMahon at (707) 756-0113 or Jose Fernandez at (707) 280-9882, or email us at MFCSonoma@gmail.com. Let’s start building something great — the right way, from the ground up.

📍 Location

MFC Construction Inc.
21675 Arnold Drive
Sonoma, CA 95476

Mon–Fri: 7:00 AM – 5:00 PM

MFC Logo

📞 Contact

John: (707) 756-0113

Jose: (707) 280-9882

Email: MFCSonoma@gmail.com

© MFC Construction Inc. All Rights Reserved. Designed by 1 Fine Design.