Phoenix Contractors

California Contractor’s License #791988

Call us today 1 (408) 370-7046

room additions in Campbell, CA

Expert Room Additions IN THE South BAY AREA

Whether you want an extra bedroom for the kids, a new sunroom to relax in, or a separate guest house to host visitors, we can bring your dream space to life. With over 20 years of remodeling and construction experience, we’ll build your room addition on time, within budget, and with zero hassle along the way.


Free Estimate / Free Consultation
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campbell room additions contractors project 1 min

Campbell Room Addition Contractors

Add More Space, Comfort, and Value to Your Home

Maybe your family has grown and you’re starting to feel cramped… or you’ve spent years dreaming about that extra home office where you can work in comfort… or you’ve got your eyes on a new house and want to make your current property more attractive to potential buyers.

Whatever your motivation, it’s time to add some extra space to your home – and Phoenix Contractors is here to help.

A full-service remodeling company based in Campbell, we’ve been helping homeowners across the Bay Area build the homes of their dreams since 2001. We’ll listen carefully to your needs, help you plan out the room addition that’s right for you, and then guide you seamlessly through the process as we bring your new space to life.

How we can help

How we can help

Types of Room & Home Additions We Can Build

Here are some of the most common additions we build for homeowners. All of our projects include guidance on zoning and permit requirements, custom design, top-to-bottom project management, and a 1-year warranty to ensure your satisfaction.

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Conventional Rooms

From extra bathrooms to spacious master suites, we can build any room you need to make your home more functional and comfortable.

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Two-Story Additions

Want to expand your home without eating up yard space? We can build you a second story that meshes perfectly with the rest of your house.

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Whether you want an extra space to rent out or use yourself, an ADU can be a massive value-add to your property. Let us build you one that fits your needs.

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Looking for a beautiful place to relax and take in the Bay Area sunshine? We can either convert an existing space into a sunroom or build you one from the ground up.

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Garage Conversions

We can help you take advantage of underutilized space by transforming your existing garage into an new office, guest house, or even a home gym.

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Don’t want to invest in a full room addition? Also known as “micro-addition,” bump-outs are a great way to add more space without building a new room from scratch.

20+ Years Experience

Construction Expertise You Can Rely On

From creating design plans to integrating HVAC systems, there’s so much that goes into a room addition of any size or scope. Which means you don’t just need a contractor who can get the job done….

You need one who has the skills, experience, and knowledge to get the job done right.

We’ve spent the last 20 years perfecting our craft and have built full custom homes from 1800 to 4500 square feet on flat ground as well as hillsides. Long story short, we know construction inside and out – and we’re more than capable of handling any home addition project you throw at us.

If you’re looking for quality craftsmanship, expert guidance, and a final product you’ll enjoy for years, contact us today to schedule your free consultation.

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Ready to get your free estimate?

Fill out the form below or give us a call to schedule a free, no obligation consultation. We respond to all inquiries within 24 hours and can meet with you in-person or virtually to go over your remodeling needs.

Our Process

Let Us Guide You to a Home Addition You’ll Love

Whether it’s an extra bathroom or a second story, adding extra space to your home doesn’t need to be stressful. We take you through a proven remodeling and construction process, handling all the details and making sure you know exactly what to expect at each step.

Step 1


It all starts with a free consultation where we get a clear idea of what you’re looking for and gather all the necessary information for the project. From there, we’ll draft up your new room’s designs (in 2D or 3D depending on your preferences) and provide a project estimate and proposal.

Step 2


Once you’ve accepted the proposal, we’ll get to work on obtaining the necessary permits for your addition. We’ll also handle ordering materials and provide you with a clear timeline for when your project will be finished.

Step 3


This is where your new space will start to come to life. From demolition to installation, we’ll build your new space with expert craftsmanship and attention to detail. During construction, you can expect our team to show up on time, treat you with respect, and clean up each day after the work is finished.

Step 4

Quality Control

Before finishing your addition, we ensure that every inch of the space is built to perfection. This includes carefully reviewing all final touchups and doing a final walk-through and inspection with you.

Step 5

Handover & Support

Now it’s time to start enjoying your new space! But don’t expect us to just finish our work and say goodbye. All of our projects are backed by a 1-year warranty, and we follow up regularly to make sure you are fully satisfied with everything.

Why Choose Us?

Why Choose us?

What to Expect When You Choose Phoenix Contractors

No matter the size of your home addition, we provide a high level of customer service and a superior quality product at reasonable prices.

close attention to detail

Attention to Detail

From project planning to cleaning up after the day’s work is finished, we care about the details and are committed to giving you flawless work.

construction that lasts

Construction That Lasts

We believe in implementing best practices for construction and stay up-to-date with new technology and materials to ensure a long life for your project.

zero hassle

Zero Hassle

We manage every part of the construction process, including ordering materials, handling deliveries, securing permits, and scheduling subcontractors.

clear communication

Clear Communication

We answer all your questions promptly, explain every step of the construction process, and provide consistent updates throughout the entire project.

honesty transparency

Honesty & Transparency

With you work with us, what you see is what you get. We provide detailed estimates before your project starts and stay true to costs and timelines.

expert guidance

Expert Guidance

Whether it’s providing helpful design ideas or finding solutions when you’re at a crossroads, we’ll guide you to the additions that fits your tastes and budget.

Our Testimonials

What our clients are saying

Schedule a free Consultation

Fill out the form below or give us a call to schedule a free, no obligation consultation. We respond to all inquiries within 24 hours and can meet with you in-person or virtually to go over your remodeling needs.

Free consultation

Getting started is easy as 1-2-3

Remodeling your home has never been easier!



Schedule a
Free Consultation

We’ll meet with you in-person or virtually to go over your needs and gather information for the project.



Get Your
Project Estimate

Once we clearly understand your vision, we’ll send over a project estimate outlining all the costs.



Watch Your Dream
Space Come to Life

We’ll get to work on your remodel, managing the entire process from start to finish.


Your Questions, Answered

Have questions about our room and home addition services?
We’ve got answers.


While we can work off of existing designs if you have them, we’re a full-service remodeling company that handles both the design and construction of new additions.

If you already have a designer you’re working with, we’re happy to collaborate with them as well.

While we’re capable of building almost any room addition you can think of, the reality is that every project comes with limitations.

We’ll help you plan the addition that’s right for you during the consultation and design phases, considering factors such as your property’s size, local zoning and building codes, structural considerations, budget constraints, and even HOA restrictions.

The specific permits required for your addition will depend on your project’s size, the type of addition you’re looking for, and where your home is located.

But no need to stress! We’ll let you know what permits will be needed during the consultation and design phase and then handle all the paperwork to secure them.

Yes. All of our projects come with a 1-year warranty to ensure your satisfaction.

We’re the right choice if you value being listened to. We don’t build “canned” projects with materials that are all preselected. Instead, our goal is to fulfill your needs by giving you plenty of flexibility in choosing materials, design styles, and every other component that goes into your remodel.

To learn more about our customer-first approach to remodeling, visit our About page.

Of course. You can view a selection of completed additions on our Gallery page.

Looking for a specific type of project or design style that’s not on the page? Just let us know, and we’ll be happy to show you relevant samples.

Yes. We’re based in Campbell but offer remodeling services throughout the greater South Bay Area. Some of our most common service areas include Los Gatos, San Jose, Santa Clara, and Saratoga.

Getting started is simple. Just give us a call at (408) 370-7046 or submit a form to schedule a free, no obligation consultation with a member of our team.

We respond to all inquiries within 24 hours and can meet with you in-person or virtually to discuss the details of your new addition.