New construction & ADUs · Southern California

More space.
New possibilities.

Build a home around your life. Create space for family. Explore the potential of your property.

Terra Nostra Builders brings new homes, accessory dwelling units, and residential additions to life with thoughtful planning and a clearly defined scope.

TERRA NOSTRA BUILDERS, INC. · CSLB #1132769

THOUGHTFUL PLANNING. PERSONAL ATTENTION.

NEW HOMES   /   ADUs   /   ADDITIONS & REMODELING
Build for the way you live

Your property.
Your next chapter.

Your next chapter may begin with an empty lot, an underused backyard, or a home that no longer meets your needs.

Whether you are planning a custom home, creating independent living space for family, or considering an ADU for potential rental income, we help you explore what makes sense for your property and budget.

Our services

Built around your plans.

From early planning through construction, understand your options and move forward with a clear plan.

01 / NEW HOMES

Your vision, built from the ground up.

Create a home designed around your priorities, from the layout and living spaces to the details that make it yours.

Ground-up construction, replacement homes, and projects on vacant land. Considering a lot or fixer-upper? Talk with us before you buy.

Discuss a New Home ↗
02 / ADU CONSTRUCTION

More living space. Right at home.

An accessory dwelling unit can provide a separate home for parents, adult children, guests, or tenants.

Detached ADUs, garage conversions, and garage replacements, with layouts that make thoughtful use of the available space.

Explore ADU Concepts ↗
03 / ADDITIONS & REMODELING

Make your home work better for you.

Expand your living area, improve your layout, or update the spaces you use every day.

From kitchen and living room expansions to whole-home renovations, with a coordinated scope that connects your existing home to your plans.

Plan My Home Improvement ↗
ADU concepts

Ideas for your backyard.

An ADU can be a home for parents, adult children, guests, or tenants. Here are a few ways to add one to your property.

Explore My ADU Options ↗
Concept of a detached garage converted into an ADU with a glass front entry
GARAGE CONVERSION

A new life for the garage.

Turn an existing garage into a bright, independent living space, or replace it with a new structure.

Concept of a two-story ADU built above a detached garage
ABOVE-GARAGE ADU

Build up, keep the yard.

A second-story unit over a new garage adds living space while preserving outdoor area.

Concept of an open-plan ADU interior with a kitchen, living area and sliding doors to a garden
INSIDE AN ADU

Compact, open and livable.

Vaulted ceilings, an open kitchen and generous glass make a small footprint feel like home.

Images are illustrative concepts. Your options depend on the property, site conditions, utility requirements, and local approvals. We help you understand those factors before construction.

How we work

A clearer path from idea to construction.

01 · Tell us your vision

Share your property location, project goals, and what you hope to accomplish.

02 · Explore the possibilities

We review the proposed scope, site considerations, and preliminary budget.

03 · Develop the plan

We coordinate the design and planning steps needed to prepare your project for permitting and construction.

04 · Build with a defined scope

Before work begins, we outline construction scope, responsibilities, payment milestones, and project expectations.

05 · Complete your new space

We work through the final construction details and walkthrough with you.

Your investment

Know what goes into your build.

Every property is different. Construction costs depend on the design, size, site access, foundation, utilities, finishes, and approval requirements.

Our proposals identify what is included, what is excluded, and which items may require separate allowances or owner arrangements.

Request a Project Consultation
About Terra Nostra Builders

Good projects begin with listening.

CALIFORNIA CONTRACTOR LICENSE · CSLB #1132769

Building a home is a meaningful investment. We believe the process should begin with listening, clear expectations, and a shared understanding of what you want to achieve.

Terra Nostra Builders works with homeowners to create useful, welcoming spaces through new home construction, ADUs, additions, and remodeling throughout the Inland Empire and surrounding Southern California communities.

Our goal is simple: help you move from an idea to a well-defined project, then bring that plan to life.

Let’s talk about your property

What would you like to build?

Have a property in mind? Thinking about an ADU? Tell us a little about your project so we can discuss the next step.

909-600-5619

Terra Nostra Builders, Inc.
9431 Haven Avenue, Suite 100
Rancho Cucamonga, CA 91730

CSLB #1132769

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