Home Additions & Expansions in Gilroy, CA
When we think about our homes, it’s often the memories made within those walls that matter most. But as our lives change—whether it’s a growing family, new hobbies, or an urge for more space—the need to adapt can spark ideas for home additions and expansions. Many of us find ourselves debating whether to renovate, expand, or even move. Michael Marini Construction is here to bring your vision to life, making those dreams a reality with custom solutions tailored just for you.
Serving Santa Clara County and surrounding communities for over 20 years, our team knows how to blend new spaces seamlessly with your existing home. Whether you’re dreaming of a spacious new family room, a primary suite, or a second story, we help you add square footage in a way that looks natural, functions beautifully, and increases the long-term value of your property.
OUR SERVICES
Are you Looking to Expand Your Home?
Whether your family has grown, your needs have changed, or you simply want to upgrade your home without the hassle of moving, an addition offers a smart, long-term solution to create more living space, improve functionality, and better meet the needs of your household. Whether your family is growing, your lifestyle has evolved, or you want to invest in your property without the hassle of moving, a well-planned addition offers a smart, long-term solution that adds both comfort and value to your home.
Unlike simple interior renovations, additions involve building new square footage—either outward or upward—while maintaining the architectural integrity of your home. At Michael Marini Construction, we specialize in crafting seamless additions that blend perfectly with your existing layout so your home feels cohesive and complete.
Here are the most popular types of home additions we design and build for homeowners:
The kitchen is often the heart of the home, and when it feels too small or outdated, the entire house can suffer. A kitchen expansion allows you to create a spacious, open-concept area perfect for cooking, dining, and entertaining. Whether you’re dreaming of a large center island, additional storage, or upgraded appliances with room to move around, expanding your kitchen can bring everyday comfort and long-term value.
As households grow or needs change, adding a bathroom can make a world of difference. Whether you’re looking to create a spa-like ensuite, a powder room for guests, or an additional full bath to reduce morning traffic, a bathroom addition boosts convenience and luxury. It’s one of the most impactful ways to improve both your home’s function and resale appeal.
A bedroom suite addition goes beyond simply adding another bedroom. It’s about creating a private oasis—complete with a generous sleeping area, walk-in closet, and attached bathroom. Ideal for homeowners seeking more privacy, space, or comfort, this type of addition is perfect for aging in place, welcoming in-laws, or upgrading your primary bedroom experience
Adding a family room provides a comfortable, casual space for everyone to gather. Whether you need a place for movie nights, game days, or just relaxing after a long day, a family room offers the flexibility to serve a wide range of activities. This type of addition is especially valuable in homes with formal layouts that lack an open, inviting space for connection.
When your property’s footprint is limited but your space needs are growing, a second-story addition lets you expand vertically. This approach is ideal for homeowners who want to double their square footage without losing valuable outdoor space. A second story can include multiple bedrooms, bathrooms, or even a private apartment-style layout, all while preserving your lot and landscaping.
Occasionally, it’s not just about adding space—it’s about reimagining how your main level works. A first-floor remodel combined with an addition allows you to redesign your layout while adding the square footage you need. Whether it’s opening up walls to create better flow, building out to expand your kitchen and dining area, or adding a mudroom or guest room, this approach transforms how your home functions day to day.
At Michael Marini Construction, our goal is to help you design and build additions that feel like they’ve always belonged. From concept to completion, we focus on quality, communication, and craftsmanship—delivering expanded spaces that support your lifestyle and improve your home’s long-term value.
Why Choose Michael Marini Construction for Your Home Addition?
Choosing the right contractor for your home addition is a big decision. You’re not just hiring someone to build—you’re trusting a team to work inside your home, follow through on promises, and bring your vision to life. For us, it’s about more than construction—it’s about building trust, one project at a time.
For over 20 years, we’ve proudly served and lived in Santa Clara County, working on homes of all sizes and styles. We understand the local building codes, permitting processes, and architectural styles that define this region. Our experience in the area gives us a clear advantage when it comes to designing additions that fit seamlessly into existing structures while meeting all regulatory requirements.
Every home—and every homeowner—is different. We don’t reuse the same design for multiple projects or rely on cookie-cutter plans. Instead, we listen to your needs, learn how you live, and create an addition that works perfectly for your lifestyle and property. Whether it’s a second story or a spacious new kitchen, your space will be designed with purpose and built just for you.
We believe that transparency should be a given, not a luxury. From the very first meeting, we walk you through the process step by step. We explain your options, talk through timelines and costs, and provide regular updates as your project progresses. If something needs to change, you’ll hear it from us right away, along with a clear explanation and a solution.
We treat every home like it’s our own. That means using high-quality materials, hiring experienced tradespeople, and following construction best practices from day one. The result is an addition that not only looks beautiful on the outside but is built to perform, so you can enjoy your new space for years to come without worrying about repairs or premature wear.
Let’s Build the Space You’ve Been Dreaming About
If your home is starting to feel too small—or not quite right—an addition or expansion could be the perfect solution. At Michael Marini Construction, we help you stay in the home you love while creating the space you need.
For a complementary quote on your next home addition project, contact us at Michael Marini Construction or call us at 408-310-8732 today!
HOW IT WORKS
Our Home Addition Process
At Michael Marini Construction, we pride ourselves on delivering high-quality home expansions. From the first conversation to the final walkthrough, we ensure that every detail aligns with your vision and needs.
Initial Consultation
We start with an initial consultation that sets the groundwork for your project. During this meeting, we take the time to listen carefully to your ideas, assess your budget, and outline your requirements. It’s our first chance to understand what you want to achieve with your new space, whether you’re dreaming of a cozy sunroom or a sleek kitchen extension.
Additionally, we discuss zoning regulations and any permits that need to be obtained, as well as potential challenges specific to your location. This initial exchange is crucial—it’s where the journey begins, and we find it empowering to help you define your goals.
Designing Your Space
With a clear understanding of your needs from our consultation, we move into the design phase, which is truly a collaborative effort between you and our skilled architects.
Our designers then translate your ideas into detailed plans tailored specifically for you. Utilizing advanced software and 3D modeling tools, we create visual representations of how your space will look once complete. The process allows you to visualize the result and provides opportunities for adjustments before construction commences.
Construction Phase
Once the designs are finalized and approved, we transition into the construction phase. Here, experienced project managers take charge, overseeing all aspects of construction with precise attention to detail. They ensure that everything stays on schedule and within budget while maintaining open lines of communication with you throughout the entire process.
Regular updates keep you informed about progress—whether it’s greeting you on-site or sending pictures of key milestones, we want you engaged every step of the way. Our commitment is not only to quality workmanship but also to making sure that you feel confident in our process.
Final Inspection and Approval
Finally, once construction wraps up, we conduct a meticulous final inspection and walkthrough.
This step ensures that everything aligns with both local building codes and your original expectations—a critical part of ensuring satisfaction before we officially hand over your newly expanded space.
Our streamlined process provides peace of mind at every stage, establishing a foundation rooted in trust as we embark on creating spaces that enhance property value and ensure long-term satisfaction.
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WHY CHOOSE US?
Why Marini for This Service?
450
Completed Projects
21+
Years of Experience
2566
Happy Customers
Craftsmanship That Shows
We believe every detail matters — from the framing behind the walls to the finish on your cabinetry. Our builds are designed to last, and it shows in the final result.
Hands-On Communication
You’ll never be left guessing. We check in consistently throughout the project, provide real-time updates, and answer your questions with clarity and care.
Respect for Your Space
We treat your home like it’s our own. That means showing up on time, keeping job sites clean, and minimizing disruption to your daily life.
Your Trusted Construction Partner in Santa Clara and San Benito Counties
From kitchens to new construction, Marini Construction proudly serves homeowners and businesses throughout Santa Cruz County, the South Bay, and surrounding communities. Wherever you are, our experienced team is just a call away — ready to build with precision, integrity, and care.
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Testimonials
What people say about us
God bless you for taking such good care of us. It has been and continues to be a great blessing having you as our Contractor. We have full confidence in your work and know we can trust you. We ask the Lord to reward you with many graces for your family and workers. You are all daily remembered in our prayers and we know our Mother Francis Maria will smile on you from Heaven. God bless you one and all!
Amazing customer service and excellent craftsmanship. They helped fix a nightmare in my bathroom. The owner came to check at the end of each work day once the project began. Thorough work and helped educate me during the process. I hope to NOT need them again, but if I do I will call them in a heartbeat! Highly recommend.
I have been using Mike and his team for years now. First was just doing install of some fake grass. He did such a great job we have done cement, block, metal portico, flooring, painting, laundry room and just finished a new bedroom install. His team is great. They are very dedicated to their craft and Mike is always around to ask questions or fix things when not done to his satisfaction. He not only does good work but very accurate on their time. I could not think of anyone else I would contact to do work on their house or yard.
Marini Construction did a full remodel for me. Kitchen, 4 bathrooms, floors, lighting, built in desk, and a custom staircase. Mike had fabulous suggestions for customizations and his attention to details was amazing. He checked in every couple of days, if not daily. 10/10.
