Home Additions
Home Addition Construction in Orange County
Expand your home without moving. We design and build permitted additions that integrate seamlessly with your existing structure and style.
A home addition is one of the most effective ways to gain the space you need while staying in the neighborhood you love. Main Street Kitchen & Flooring builds additions throughout Orange County that are indistinguishable from the original home — matched rooflines, matched exterior finishes, and matched interior trim.
We manage the entire process from architectural design and permit submission through construction and final inspection. Our team coordinates all trades under one contract so you have a single point of contact throughout the project.
Whether you need a new master suite, a larger kitchen, a family room, or a second story, we have the experience to deliver it on time and on budget.
Request a Home Addition EstimateTypes of Home Additions We Build
Master Suite Addition
Add a private master bedroom with walk-in closet and en-suite bathroom. The most popular addition for growing families.
Kitchen Expansion
Extend your kitchen footprint to add an island, more cabinet storage, or an open-concept connection to the living area.
Family Room Addition
Create a dedicated gathering space with vaulted ceilings, large windows, and direct access to the backyard.
Second Story Addition
Double your living area by adding a full second floor. Requires structural engineering and is ideal for lots with limited yard space.
Sunroom / California Room
A light-filled transition space between indoors and out. Can be conditioned or semi-open depending on your preference.
In-Law Suite
An attached bedroom and bathroom suite for multigenerational living. May qualify as a JADU depending on configuration.
Our Addition Build Process
Design Consultation
We discuss your goals, review your existing floor plan, and identify the best location and configuration for the addition.
Architectural Plans & Engineering
Licensed architects and structural engineers produce permit-ready drawings that match your home's existing style.
Permit Submission
We submit to your city's building department and manage plan check through approval.
Foundation & Framing
New foundation is poured and framing is erected to match the existing structure's height and roof pitch.
MEP & Insulation
All mechanical, electrical, and plumbing systems are roughed in, inspected, and insulated.
Interior & Exterior Finishes
Drywall, flooring, trim, paint, exterior stucco or siding, and roofing are completed to match the existing home.
Home Addition FAQs
How much does a home addition cost in Orange County?
Home additions typically range from $200 to $400 per square foot depending on complexity, finishes, and structural requirements. We provide detailed estimates after a site visit.
How long does a home addition take?
Most additions take 4–8 months from permit approval to completion. Second-story additions and larger projects may take longer.
Will the addition match my existing home?
Yes. We match rooflines, exterior finishes, window styles, and interior trim so the addition is indistinguishable from the original structure.
Ready to expand your Orange County home?