Excellent Room Additions in Huntington Beach, CA
Providing All Services in Orange County, CA
Room Additions From Local Orange County, CA, General Contractors.
When your home needs more space, moving isn’t your only option. At Cornelius Construction, we specialize in expertly designed and carefully built room additions in Huntington Beach, CA that give you the space you need while boosting your property’s long-term value. Whether you’re looking for a new bedroom, a modern home office, or an expanded kitchen, our team delivers top-rated construction services that blend seamlessly with your existing home.
Led by founder Jason Cornelius, our company has earned a reputation as a trusted home addition contractor in Huntington Beach, CA, and throughout Orange County. With decades of hands-on experience, we take pride in offering first-rate construction services that prioritize quality, reliability, and client satisfaction.
From the very first consultation, our team partners closely with you to understand your vision. We help design a space that feels like a natural extension of your home, guide you through material selections, and assist with every detail—including obtaining the necessary building permits. By combining superior craftsmanship with high-quality materials, we ensure your room addition not only enhances your lifestyle but also adds measurable value to your home.
Providing All Services in Orange County, CA
Cornelius Construction proudly serves homeowners across Orange County, including Huntington Beach, Newport Beach, Costa Mesa, Fountain Valley, and more. Our wide range of expertise allows us to handle projects of all sizes, from small single-room expansions to large-scale multi-story additions.
Our approach is simple but effective: we listen, we plan, and we deliver. Whether you’re expanding your master suite, creating a private in-law apartment, or adding a functional family room, our team ensures precision at every step. The result is a space designed with your needs in mind, built to last, and completed on time.
At Cornelius Construction, your satisfaction is our priority. That’s why so many homeowners across Orange County trust us to bring their visions to life.
Ready to take the first step toward your new space? Schedule a consultation today through our Contact Page, and let’s discuss how we can expand your home with expert care.
Room Additions In Orange County
Looking to turn your home into your dream house? Get that little bit closer to your vision with a room addition from Orange County’s Cornelius Construction. We provide room addition and home improvement services to an exceptional standard. Get in touch today and see what we can add to your home.
Our Room Addition Services
Master Suite Addition
Outdoor Living Spaces
Sun Rooms
Garage Conversions & More
Why Choose Us for Your Room Addition Project?
Room Addition Services
Laying Foundations
Every new or extended room requires foundations in some capacity. For ground floor builds, this will likely require installing concrete footings and a crawlspace. Otherwise, additional structural beams may need to be put in place for additions above the ground floor.
Framing
With a new or extended room comes the need for additional framing and drywall, or else you’re left with an unfinished appearance. We can provide these services to ensure a well-designed room addition.
Electrical & Plumbing Work
Depending on the type of room addition you require and its location in relation to already installed amenities, you may need electrical and plumbing services. This is undoubtedly true when adding or extending a bathroom, en suite, or otherwise.
Decorating
Once your room addition is complete, it’ll need to be decorated. You could do this yourself, or, to save time, let us put our professional decorating skills to use, leaving you with an excellent finish.
Windows & Doors
It might seem obvious, but considering the position of your room’s windows and doors is crucial to a successful room addition. Windows must be positioned correctly to make the best use of natural light while retaining privacy.
Roofing
If your room edition requires us to construct an altogether new and/or external room, our roofing service will be needed. We use high-quality materials to ensure that your room is protected from the elements.
Get In Touch Today
Need your home remodeling? Start your next construction project today by contacting us and getting a quote. We’d love to hear from you.
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Frequently Asked Questions
Yes. To extend an existing
building, you will need a
permit.
This depends on the size and
requirements of your additional
room. For example, a new room
with plumbing and electric will
cost more than one with just electricity.
Our team brings decades of experience, uses high-quality materials, and is personally led by founder Jason Cornelius. We also assist with permits, ensuring a stress-free process from start to finish.
Most room additions in Huntington Beach, CA, are completed in 8–16 weeks, depending on size and complexity. We provide a clear project timeline upfront so you always know what to expect.
Absolutely. Adding more livable space—whether it’s a master suite, an office, or a guest room—can significantly enhance both functionality and resale value.
Yes. We manage all permit applications and inspections on your behalf, ensuring your project complies with Huntington Beach and Orange County building codes.
Cornelius Construction
Licence No.: 788184
Orange County, CA
(951) 259-8284