Home Additions That Expand Your Space the Right Way
From extra bedrooms to new living areas, we design and build additions that blend seamlessly with your existing home.
Expanding Homes with Purpose
We create additions that not only add square footage but also improve the way your home works for you.
At Diablo Bay Construction, we know that adding onto your home is about more than just creating extra space. It is about making your home more functional, more comfortable, and more aligned with your lifestyle. That is why our approach focuses on blending design, craftsmanship, and organization into every addition we build.
From second-story expansions to new master suites and extended living areas, we manage the process from design to completion. Our team ensures every structural element is sound, every finish is precise, and every part of the addition feels like it has always been part of your home.
The result is an addition that enhances your home’s value, gives you the space you need, and provides a long-term solution that feels natural and intentional.
More Room Without Compromise
Our additions are built to look natural, function flawlessly, and add long-term value to your home.
Custom Additions for Your Lifestyle
Whether you need an extra bedroom, a larger family room, or a new office, we create additions tailored to your specific needs. Our planning process ensures the new space flows naturally with your existing layout, making your home feel bigger without losing its character. Every detail is considered so the addition feels intentional and complete.
Seamless Design and Construction
A great addition should never look like an afterthought. We use design strategies, materials, and finishes that match your existing home, creating a seamless transition between old and new. From roofing and siding to interior finishes, we make sure the addition blends perfectly while giving you the extra space you need.
Efficient Project Management
Adding onto your home can feel overwhelming, but our team makes the process simple. We handle permits, scheduling, and coordination with skilled trades to keep everything moving. Regular updates and clear communication give you confidence that the project is on track and handled with care.
Most Requested Home Addition Projects
Extra space tailored to your family and lifestyle.
Master Suite Additions
Second-Story Expansions
Sunrooms
Kitchen Extensions
Home Offices
Guest Rooms
Garages
Outdoor Covered
Multi-Room Additions
Real Clients, Real Results
Explore real projects, real results, and the kind of work that defines Diablo Bay Construction from start to finish.
Stephanie Zamora
"Absolutely love my new kitchen! Nick was professional, on time, and delivered amazing craftsmanship. The whole process was smooth, and the results are stunning. Highly recommend!"
Juan Mora
"I had a great experience with Diablo Bay Construction. The team was professional, reliable, and delivered high-quality work on time and within budget. Communication was clear throughout the project, and the results exceeded my expectations. Highly recommend!"
Kim Cimoli
"Nick is great to work with! He has done many projects for us over the last 5/6 years. We will continue hiring him in the future. Doesn't matter if it's just a small remodel on your personal home or if you are an investor for big projects including new construction, add-ons and ADU's. He has a great crew with great workmanship and very professional. Highly Recommend!"
Let’s Build Something That Lasts
Ready When You Are
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Home Additions That Expand Your Space the Right Way
From extra bedrooms to new living areas, we design and build additions that blend seamlessly with your existing home.
Expanding Homes with Purpose
We create additions that not only add square footage but also improve the way your home works for you.
At Diablo Bay Construction, we know that adding onto your home is about more than just creating extra space. It is about making your home more functional, more comfortable, and more aligned with your lifestyle. That is why our approach focuses on blending design, craftsmanship, and organization into every addition we build.
From second-story expansions to new master suites and extended living areas, we manage the process from design to completion. Our team ensures every structural element is sound, every finish is precise, and every part of the addition feels like it has always been part of your home.
The result is an addition that enhances your home’s value, gives you the space you need, and provides a long-term solution that feels natural and intentional.
More Room Without Compromise
Our additions are built to look natural, function flawlessly, and add long-term value to your home.
Custom Additions for Your Lifestyle
Whether you need an extra bedroom, a larger family room, or a new office, we create additions tailored to your specific needs. Our planning process ensures the new space flows naturally with your existing layout, making your home feel bigger without losing its character. Every detail is considered so the addition feels intentional and complete.
Seamless Design and Construction
A great addition should never look like an afterthought. We use design strategies, materials, and finishes that match your existing home, creating a seamless transition between old and new. From roofing and siding to interior finishes, we make sure the addition blends perfectly while giving you the extra space you need.
Efficient Project Management
Adding onto your home can feel overwhelming, but our team makes the process simple. We handle permits, scheduling, and coordination with skilled trades to keep everything moving. Regular updates and clear communication give you confidence that the project is on track and handled with care.
Most Requested Home Addition Projects
Extra space tailored to your family and lifestyle.
Master Suite Additions
Second-Story Expansions
Sunrooms
Kitchen Extensions
Home Offices
Guest Rooms
Garages
Outdoor Covered
Multi-Room Additions
Real Clients, Real Results
Hear straight from the homeowners and builders who trust Diablo Bay to deliver top-tier work every time.
Stephanie Zamora
"Absolutely love my new kitchen! Nick was professional, on time, and delivered amazing craftsmanship. The whole process was smooth, and the results are stunning. Highly recommend!"
Juan Mora
"I had a great experience with Diablo Bay Construction. The team was professional, reliable, and delivered high-quality work on time and within budget. Communication was clear throughout the project, and the results exceeded my expectations. Highly recommend!"
Kim Cimoli
"Nick is great to work with! He has done many projects for us over the last 5/6 years. We will continue hiring him in the future. Doesn't matter if it's just a small remodel on your personal home or if you are an investor for big projects including new construction, add-ons and ADU's. He has a great crew with great workmanship and very professional. Highly Recommend!"
Let’s Build Something That Lasts
Ready When You Are
Navigation
Services
Follow Us On Social Media