Family-Owned Construction
Quality Work. Honest Service.

Coastline Harmony Builders Inc is a licensed general contractor providing residential and light commercial construction in Orange County, CA. Family-owned and operated, we combine engineering knowledge, hands-on experience, and personal attention to every project.

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Welcome to Coastline Harmony Builders

Where We Build Your Visions​

We are a family-run general contracting company built on trust, communication, and consistent quality. Our team handles projects from small repairs and remodels to full home improvements and structural work.
Coastline Harmony Builders Inc holds a California B – General Building Contractor license. We work closely with homeowners and investors to deliver safe, code-compliant projects that stay on schedule and within budget.

Call Us Today​

747-377-9555

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Get Your Free Consultation

Let’s discuss your next project. Schedule a free consultation to get expert advice and an accurate estimate for your home or business improvement.

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Our Specialization​

We focus on practical, well-built solutions for your home and investment properties.

Home Remodeling & Renovation​

Kitchens, bathrooms, living spaces, updates for rentals and family homes.

Exterior Improvements

Siding, stucco repairs, exterior painting, decks, stairs and railings.​​

Room Additions & Garage Conversions

Extra bedrooms, offices, ADUs and more to increase living space and value.

Concrete & Masonry

Driveways, walkways, small retaining walls, pads and entries.

Framing & Structural Work

Wood framing, repairs, openings in walls, and other structural upgrades.

Punch List & Property Repairs

Small projects and fixes to get homes rent-ready or sale-ready.

What Our Clients Say

Jesica M. Irvine

Coastline Harmony Builders renovated our kitchen and the result is amazing.
The team was organized, respectful, and kept us updated every step of the way.
Everything was done exactly how we wanted — highly recommend!

Jessica M.

Michael R. Costa Mesa

Very happy with the work they did on our garage conversion.
Great communication, clean job site, and the final result looks professional.
We’ll definitely call them again for future projects.

Michael R.

Emily S. Lake Forest

We hired Coastline Harmony Builders for a full bathroom remodel.
The quality is excellent — tiles, fixtures, layout — everything looks modern and clean.
They finished earlier than expected which was a big plus.

Emily S.

Daniel K. Tustin

Great experience from start to finish.
They repaired and upgraded framing in our living room and everything turned out solid and clean.
Very professional team — honest and easy to work with.

Daniel K.

Anna M. Mission Viejo

We did flooring and interior painting throughout the house.
The crew worked fast, paid attention to details, and cleaned after themselves.
Our home looks completely refreshed now. Thank you!

Anna M.

Jason T. Newport Beach

They helped us with exterior siding repairs and a small deck rebuild.
The workmanship is excellent, the price was fair, and the communication was smooth.
I’m really impressed with their professionalism.

Jason T.

Our Recent Projects​

We focus on delivering durable, high-quality construction with careful planning, clean execution, and attention to detail.
Every project is approached with safety, precision, and long-lasting results in mind.

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Our Expert Team​

We are family-owned construction company based in Orange County.
Rafael is a licensed General Contractor with a professional degree in Building Operation and Maintenance.
His education covered architecture, construction technology, and building engineering, providing a strong foundation for his work in California. Rafael oversees project quality, safety, and full code compliance on every job site.
Iana handles communication, planning, and coordination so every client always knows what’s happening and feels supported from start to finish.
Together, we focus on delivering durable, high-quality work with careful planning, clean execution, and reliable service you can trust.