Your Local Home Addition Experts in Castro Valley

At Royalty Builders, we bring decades of experience helping Castro Valley homeowners reimagine their living spaces. Whether your family is growing or you simply want more room to relax and entertain, our team is here to turn your ideas into a beautiful, functional reality. As a trusted local contractor, we understand Castro Valley’s architecture, permit requirements, and the importance of designing additions that complement your home and neighborhood.

Custom Home Additions in Castro Valley

A custom home addition is the perfect way to expand your living space while increasing your home’s value and comfort. At Royalty Builders, we collaborate closely with you to design an addition that blends seamlessly with your home’s existing structure, style, and layout. Whether you’re looking to add a new family room, master suite, or in-law unit, our expert team manages every step of the process—from initial design and permitting to construction and final inspection. We work with top-tier materials and skilled craftsmen to ensure that your new space is not only beautiful but built to last. Every addition we build is tailored to your unique needs, ensuring you get the exact space you’ve always envisioned.

Custom Kitchen Additions in Castro Valley

A kitchen is more than just a place to cook—it’s the heart of the home. If your current kitchen is feeling cramped, outdated, or disconnected from the rest of the house, a custom kitchen addition can completely transform how you live and entertain. We specialize in creating open-concept kitchen spaces that are bright, modern, and highly functional. Our team will work with you to design a kitchen that reflects your lifestyle, whether that means a chef-worthy island, expanded dining area, or seamless indoor-outdoor flow. From cabinetry and countertops to lighting and flooring, we guide you through each choice to ensure your new kitchen is a perfect fit.

Stylish Bathroom Additions in Castro Valley

Whether it’s a growing family or the need for more privacy, adding a bathroom can greatly enhance your home’s convenience and comfort. At Royalty Builders, we offer stylish and functional bathroom additions that match your existing design aesthetic while adding modern amenities. From powder rooms to luxurious spa-style ensuites, we manage everything—including plumbing, tile work, and high-end finishes. Every detail is handled with care to ensure your new bathroom is not only visually appealing but also fully optimized for functionality. A well-designed bathroom addition adds comfort, boosts your property value, and makes your daily routine easier.

Sunroom Additions in Castro Valley

Bring the beauty of the outdoors into your home with a custom sunroom addition. Sunrooms provide a serene space for relaxation, reading, entertaining guests, or enjoying your morning coffee while being surrounded by natural light. Our team designs sunrooms that enhance your lifestyle and integrate seamlessly with your home’s architecture. Whether you want a cozy three-season room or a fully insulated year-round sunroom, we tailor the design to suit your vision. With high-performance windows, energy-efficient materials, and elegant finishing touches, your sunroom will quickly become your favorite spot in the house.

Functional Room Additions in Castro Valley

Sometimes you just need one more room to make everything work—whether it’s a home office, gym, playroom, or guest bedroom. Our functional room additions are designed to meet your exact needs, expanding your home’s square footage in the smartest, most efficient way possible. We focus on maximizing layout, lighting, and usability to ensure your new space is as practical as it is beautiful. Our team handles every step, from design to finish, ensuring the room integrates perfectly with the rest of your home. Let us help you create a space that enhances your everyday life.

Second Story Additions in Castro Valley

If you’re running out of space but don’t want to sacrifice your yard, a second-story addition is the ultimate solution. Adding an entire new level to your home allows you to double your living space without changing your home’s footprint. Our team has extensive experience with structural reinforcement, permitting, and design planning required for second-story additions. We’ll guide you through every phase, from engineering to interior layout and finish selections. Whether you’re adding bedrooms, bathrooms, or a full upstairs suite, we’ll make sure the new level looks and feels like it was always meant to be there.

Interior Additions

Interior additions offer creative ways to reconfigure your existing home layout for improved functionality. Whether you’re carving out a new walk-in closet, expanding your living room, or building a cozy reading nook, our team will help optimize your space from within. We specialize in thoughtful interior layouts that make your home more livable and comfortable without requiring major exterior changes.

Exterior Additions

Exterior additions include everything from decks and patios to extended living areas and entryway expansions. We design and build outdoor spaces that extend your home’s footprint and blend beautifully with its style. Whether you want to boost your curb appeal or create more room for entertaining, our exterior additions bring beauty and function to your outdoor space.

Home Addition Costs in Castro Valley

Adding onto your home is a major investment, but one that adds long-term value and functionality. Here’s a general breakdown of what you might expect:

• 🏠 Room Additions: Starting at $250–$400 per square foot

• 🏡 Kitchen/Bathroom Additions: Starting at $300–$500 per square foot

• 🛌 Second Story Additions: Starting at $350–$600 per square foot

• 🏢 Interior Additions: Custom pricing depending on scope (typically $200–$400 per square foot)

• 🏥 Exterior Additions: Custom pricing depending on size and finish (typically $150–$350 per square foot)

Pricing can vary depending on the scope, finishes, and structural work required. We provide transparent, itemized quotes to ensure there are no surprises down the line.

Let’s Build Your Dream Space in Castro Valley

Your dream home might be closer than you think—sometimes all it takes is the right addition. At Royalty Builders, we combine creative design, expert craftsmanship, and local knowledge to deliver additions that make your home more spacious, functional, and enjoyable. Let’s talk about what’s possible for your Castro Valley home. Contact us today to schedule your free consultation.

Why Choose Royalty Builders for Your Castro Valley Home Addition?

• ✅ Locally Owned & Operated: We know the Castro Valley area and understand the unique needs of local homeowners.

• ✅ Experienced Team: Decades of experience with custom home additions of all sizes.

• ✅ Full-Service Design & Build: From concept to completion, we handle every aspect of the project.

• ✅ Transparent Estimates: No hidden fees, just honest pricing.

• ✅ Satisfied Clients: We’ve earned a reputation for quality work and exceptional customer service.

Frequently Asked Questions (FAQ) – Home Addition in Castro Valley

Q: Do I need permits for a home addition in Castro Valley?
A: Yes, most additions require permits. Our team handles all necessary applications and works closely with the city to ensure compliance.

Q: How long does a home addition typically take?
A: Timelines vary by project size, but most additions take 2–6 months from design to completion.

Q: Will my home addition match the style of my existing house?
A: Absolutely. We specialize in seamless additions that integrate with your home’s architecture and style.

Q: Can I live in my home during construction?
A: In many cases, yes. We take precautions to minimize disruptions and maintain a safe, clean work area.

Contact Us Today

Ready to expand your home and improve your lifestyle? Get in touch with Royalty Builders today. We offer free consultations and would love to hear about your project.

📞 Call us now or fill out our quick online form to get started. Let’s build your dream space together!