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Design and Construction
Made Simple.
From initial sketches to final construction, Jantz Group delivers complete design and build services for custom homes, additions, remodels, ADUs, and light commercial projects throughout California’s Central Valley.
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Building a greener future with every project.
About Us
Shaping Ideas Into Exceptional Spaces
Jantz Group is a full-service Design–Build firm offering architectural design, 3D modeling, engineering coordination, permitting, and construction management for residential and light commercial projects.
Whether you need conceptual plans, permit-ready drawings, or full construction oversight, we provide a seamless experience from start to finish.
Comprehensive Services
From concept to completion, every phase is managed with precision and care
Tailored Solutions
Each project is customized to reflect your unique needs and vision
Our Process
Guiding You Seamlessly from Vision to Reality
From the first consultation to final construction, every step is carefully planned to ensure quality, precision, and satisfaction.
Consultation & Site Review
Estimate / Proposal for Services
Initial Conceptual Design
Construction Documents & Engineering
Permitting
Construction Management / Build
Why Us
Delivering unmatched craftsmanship and reliability.
We take pride in offering exceptional quality that sets us apart. Every project we undertake reflects our unwavering commitment to precision, innovation, and excellence — values that form the foundation of everything we build.
Our Projects
Crafting Exceptional Spaces for Every Vision
Let’s talk about your ideas and make a plan that fits your goals.
Contact us today, and let the journey to your dream construction project begin!
Schedule a Consultation
Testimonials
Testimonials from Our Trusted Clients
Jalen B.
Contractor
James designed our garage conversion to master bed and bath. We really enjoyed working with him. He has a talent for understanding your needs and drawing up a plan to match them!
Alex S.
Home Owner
We had Jantz group design a kitchenette / bathroom in our guest bedroom inside of our shop. My wife and I gave James just a little idea of what we had in mind, and he went to work getting us a design. He did a fantastic job of using the limited amount of space we had to work with and getting us a design to maximize the space we had. Very skilled with a high level of attention to detail. Highly recommend Jantz Group!
Michael D.
Home Owner
Great experience working with James getting some plans drawn up for us. Very responsive and easy to work with.
Ben G.
Contractor
I had a great experience working with Jantz Group on plans for my full home rewire. They were extremely professional, knowledgeable, and easy to communicate with throughout the entire process. Definitely plan on working with James in the future.