Home Additions & Room Additions in Orange County, CA

More Space, Same Home

When your family outgrows your home but you love your neighborhood, a home addition is the answer. CCSI designs and builds additions that expand your living space while maintaining the architectural integrity of your existing home — because nothing should look or feel like an afterthought.

Orange County lots vary widely — from compact lots in Tustin to sprawling properties in Yorba Linda. Setback requirements, height limits, and lot coverage maximums differ by city and zone. We evaluate your property's potential early, so you know exactly what's possible before we start drawing plans.

Whether you need an extra bedroom, expanded living room, second-story master suite, or sunroom, CCSI integrates the new construction seamlessly — matching roof pitches, exterior finishes, and interior flow so it feels like it was always part of the home.

Addition Types

• Bedroom and bathroom additions
• Family room and great room expansions
• Second-story additions
• Sunrooms and enclosed patios
• Kitchen bump-outs and extensions
• Attached garage construction
• In-law suites