San Jose: Home Addition Contractors
Top Home Builders is the top choice for professional home addition contractors in San Jose & Bay Area. Our team is experienced in all kinds of home addition projects, with a commitment to using only the finest materials with quality results. Your home will undergo a complete transformation once we complete a home addition.
From garages to kitchen add-ons, our San Jose team is here to help you improve the look and functionality of your home. Our custom home additions allow you to create the space you have always wanted while adding value to your home. We work with you through the entire planning and building process to ensure that your home addition meets your every need.
Recent Home Addition Projects
Second Story Addition Contractors
Sometimes, a home can’t be expanded horizontally and the best option is to utilize a second-story addition. Like a traditional home addition, when you add a second story to a house, you are improving space usage and improving functionality throughout your home. Two-story additions not only allow you the opportunity to create more usable space for you and your family but also create income opportunities, such as renting out your new space to help pay your mortgage in San Jose.
A Second-story addition can be built about the existing home structure, seamlessly blending into the architecture and flow of the home. You can potentially double the size of your home without having to lose any landscaping, making it a preferred choice for homeowners in urban areas.
San Jose Home Addition Services
Completely change the way you use your home by adding more living space. At Top Home Builders, our room addition services cover everything from single rooms to full second-story builds. As experienced room addition contractors in San Jose, we design and build spaces that meet your goals, fit your property, and comply with local codes. Explore the types of additions we offer below.
Why Choose Us in San Jose?
Let’s be honest the right crew makes all the difference. At Top Home Builders, we’ve been remodeling homes across San Mateo for over 15 years. We stay organized, stay honest, and make sure you’re never left guessing. Here’s why locals trust us with their homes:
Dedicated project manager
No confusion, no hand-offs. You get one project manager from day one who keeps everything on track — updates, scheduling, and making sure things move smoothly from start to finish.
Trusted Results
From full-scale makeovers to smart layout upgrades, our work doesn’t just “get done” it works better, lives better, and looks the part. We’ve earned our rep in San Mateo by doing the job right, not just fast.
In House HOME contractors
We keep it tight. No random subcontractors. Our own crew handles your project, so communication stays clean and there’s no mystery about who’s doing what.
15+ years of experience
San Mateo homes come with quirks, we’ve seen ’em all. With over 15 years in the field, we know how to work around the tight rules, odd corners, and fast-moving timelines without missing a beat.
Award-Winning Service
Our clients refer us, and the industry’s taken note. We don’t just aim to hit the mark we usually go a little past it.
Licensed & Insured with a Lifetime Warranty
We’re fully licensed, fully insured, and we stand by every job with a lifetime warranty. No small print. Just honest protection that holds up over time.
San Jose Home Addition Process
We make adding space simple. From the first visit to the final delivery, we promise your room addition in San Jose is done right! Our step-by-step process begins with:
01
Site Visit
Our team visits your property to understand your space, discuss your needs, and evaluate what’s possible. This helps us gather the details we need before moving forward.
02
Proposal
After the site visit has ended, we prepare a detailed proposal. This includes project scope, layout options, and a budget estimate so you know exactly what to expect.
03
Work Agreement
Once the proposal is approved, we prepare a clear work agreement. This outlines the project timeline, budget, and expectations, keeping everything transparent from the start.
04
Design and Plans
Next, our design team will develop drawings and layouts. This includes architectural plans, structural considerations, and engineering as needed for your home addition. It’s at this stage that you’ll see exactly how your new space will take shape.
05
Obtain Permits
We secure all necessary permits required for home additions in San Jose. This step confirms your project meets local building codes and keeps progress on track.
06
Demolition & Construction
Our construction team begins by carefully preparing the site, removing any old structures, and building your new addition with quality materials and skilled workmanship.
Build a Guest House in San Jose
If you’re a homeowner in San Jose looking to capitalize on this opportunity, building a guest house on your property can be a fantastic investment. Not only will it provide you with additional income, but it can also serve as a private retreat for friends and family, or even serve as a rental property.
Moreover, a well-designed and thoughtfully constructed guest house can enhance the value of your property, making it more attractive to potential buyers in the future.
Book a Home Addition Consultancy with certified and Licensed home contractors.
FAQ’s
An addition gives you more room without leaving your neighborhood. It’s usually more affordable than buying a larger house in San José and adds long-term value.
Costs vary depending on size and finishes. A small room addition may start around $60,000, while larger or second-story projects can exceed $500,000. Custom design and material choices influence the final budget.
Yes, permits are required for most home additions. Our team manages the entire permitting process with the City of San José to ensure your project meets all local codes and avoids unnecessary delays.
Timelines vary by project size and complexity. Most additions take several months from design through construction, with larger or multi-story builds requiring more time.
Yes. We carefully design every addition to integrate seamlessly with your home’s architecture, ensuring the finished space feels natural and cohesive.