Jantz Group

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About

About Us

Built on Quality, Transparency, and Trust.

Jantz Group was founded by James Jantz, a licensed contractor and designer with years of hands-on experience in residential design and construction. What began as a small design practice has grown into a trusted partner for homeowners, builders, and developers across the Central Valley.

We specialize in custom home design, remodels, additions, permit-ready drawing packages, and 3D renderings. Our approach blends creativity, technical precision, and real-world construction expertise—ensuring every project is beautiful, functional, and buildable.

Our Vision

To create buildable, beautiful designs that reflect integrity, clarity, and lasting value.

Our Mission

To deliver precise, clear plans and reliable solutions for every client project.

Our Values

The Standards That Define Who We Are

Integrity

We keep our commitments, communicate clearly, and treat every client with honesty and respect.

Excellence

We aim for high-quality design and documentation that stands the test of time project reflects.

Stewardship

We manage resources wisely, offering solutions that are cost-effective and sustainable.

Transparency

No hidden fees. No surprises. Just clear processes and straightforward expectations.

Community

As a Central Valley–based firm, we’re committed to supporting and uplifting our local community.

Your Dream Home Starts With a Conversation.

Reach out today and let’s make it a reality.
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FAQ

Quick answers to guide your project.

Still Have Questions?

Can’t find the answer you’re looking for? Please contact with our customer service.

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General Questions

Design–Build is a streamlined process where one team handles both the design and construction aspects of a project. This creates better communication, fewer delays, and a smoother experience for homeowners.