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We believe in creating spaces that inspire, using only the finest cost-effective materials to ensure longevity and aesthetic appeal.

Our solutions

and Insured

We prioritize compliance with all state of California legal requirements, ensuring a seamless and worry-free experience. Trust is at the core of our business, earned through years of delivering on our promises and exceeding expectations.

New Construction

We specialize in custom homes that exceed expectations. With years of experience, our team of skilled professionals is dedicated to bringing your dream home to life.

Home Remodeling

Our expert team of designers, architects, and craftsmen are dedicated to transforming your vision into reality, creating spaces that seamlessly blend functionality with style.

ADU Build

One Phase team is dedicated to crafting functional and stylish ADUs that seamlessly blend with your existing property. From initial design concepts to final construction

Room Additions

Transforming your space with seamless kitchen, bedroom, and bathroom additions that seamlessly blend functionality with aesthetic appeal.

Commercial Build

Renovating an office space, constructing a retail establishment, or building a new corporate headquarters, One Phase Inc. has the skills and resources.

Retail Construction

Transforming retail spaces into captivating environments that attract customers. Whether you're launching a new store or renovating an existing one.


Just like you, we want to build products that make us proud.

General Construction Contractor

Kitchen Remodel

General Contractor

Commercial Construction

Home Remodeling and Room Additions

Home Remodel

General Construction Contractor

Home Construction

Home Construction

Room Addition


Decades of expertise, a commitment to excellence, and a reputation for reliability.

  • Experience

    20+ Years of trust is at the core of our business, earned through years of delivering on our promises and exceeding expectations.

  • On-time

    What sets us apart is not just our competitive pricing. We value the relationships we build with our clients and strive to exceed timing and quality expectations at every turn.

  • Cost Effective

    Reputation for Affordability, Craftsmanship, and Reliability. Let us help you make smart investments that elevate both your living experience and your home's market worth..

Home Build Contractor
Commercial General Contractor
Commercial General Contractor
Room Additions

“ I recently hired ONE PHASE Inc. for a home remodel project, and I couldn't be happier with the results! The project was completed on time, and the quality exceeded my expectations. I highly recommend ONE PHASE Inc. ”

San Diego Home Construction

Aaron R.

Chula Vista, CA.

“ ONE PHASE Inc. turned my vision of a room addition into a reality, and I'm thrilled with the outcome. The team was not only skilled and efficient but also considerate of my preferences and budget.”

San Diego Home Construction

Carlos V.

San Diego, CA

Our valued Clients

Let's Build Together!

CALL: 619.777.8821