At GMJ Construction, being the No.1 Eichler San Jose construction company with over 15 years of experience, we offer an array of construction and remodeling solutions throughout the Bay Area. Specializing in the meticulous remodeling of Eichler Homes, we blend modern techniques with traditional craftsmanship to enhance these architectural gems. Our diverse services span both residential and commercial projects, guaranteeing high-quality outcomes tailored to each client’s vision.

Trust GMJ Construction Inc. for skilled, reliable, and top-tier construction expertise that transforms spaces into aesthetically pleasing and functional environments. Choose us for unparalleled commitment and exceptional results in every project.

Eichler Home Addition & Expansion Services in San Jose, CA

GMJ Construction specializes in Eichler home additions and expansions in San Jose and the surrounding Bay Area.  Our San Jose–based team has deep expertise in the unique mid-century modern design of Eichler homes.  We tailor every project—whether a new bedroom wing, enlarged kitchen, or enclosed atrium—to blend seamlessly with your Eichler’s signature features: open post-and-beam construction, flat roofs, and floor-to-ceiling glass walls.  From the very first sketch, we focus on preserving natural light and the home’s indoor-outdoor flow.  Our full range of services covers every aspect of Eichler remodeling:

• Room additions to expand living space or add bedrooms

• ADU conversions (Accessory Dwelling Units) for guest suites or home offices

• Kitchen remodeling designed to complement Eichler aesthetics

• Bathroom remodeling with modern fixtures and Eichler-inspired tile

• Home restoration focusing on repairing or replicating Eichler materials

• Planning & design to create permit-ready plans that honor Eichler architecture

• Eichler home remodeling services for full-service support on Eichler-specific projects

In addition to structural work, we handle all finishing touches.  Our team provides flooring installation, painting, drywall & insulation, and siding installation so your new addition looks original.  You won’t have to hire multiple contractors—GMJ is your one-stop Eichler expert.

Custom Eichler Design & Planning

Every successful Eichler addition begins with thoughtful design.  Eichler homes are defined by clean lines, open layouts, and a seamless connection to nature.  Our architects and designers know how to extend an Eichler’s open floor plan while respecting its character.  We use materials that match Eichler originals—like vertical-wood siding, polished concrete floors, and high-performance glass—to make additions feel like a natural expansion.  We also prioritize natural light: floor-to-ceiling windows, clerestory glass panels, or new skylights keep your expanded space bright and airy.

To guide this process, our planning & design services team works with you to finalize layout, materials, and finishes.  We handle zoning research and permit drawings so the project moves smoothly.  Our experts can even advise on creative ideas like converting Eichler atriums into livable space, turning an open courtyard into an extra family room or office.  At every step, we ensure the addition ties into Eichler hallmarks: the same tongue-and-groove ceiling, a matching roof pitch, and alignment of interior lines.

Expert Eichler Construction & Integration

When it’s time to build, our licensed contractors and craftsmen pay meticulous attention to Eichler details.  We follow Eichler-style construction techniques—using post-and-beam framing and maintaining flat, overhanging roofs—to make any addition look original.  Our team matches wood paneling and plaster finishes so the new sections blend in.  We also install modern upgrades without compromising style: for example, we route wiring in-floor to keep ceilings open, add insulation and energy-efficient windows for comfort, and integrate smart thermostats and lighting discreetly.

Safety and durability are also priorities.  In earthquake-prone San Jose, our Eichler additions include necessary seismic retrofitting to reinforce the foundation and roof.  We use durable concrete slab flooring and rust-resistant hardware to ensure your addition lasts decades.  After construction, our finishing crews install matching flooring and apply painting schemes that echo Eichler color palettes.  The result is a modern, comfortable expansion that feels like it was part of the original Eichler home.

Featured Eichler Home Addition Projects

GMJ Construction has delivered dozens of Eichler expansions across Silicon Valley.  Here are a few examples of our recent work:

• San Jose (Fairwood Ave) – Seamless Eichler addition and full remodel on a classic flat-roof Eichler home【Fairwood Ave Project】.

• Sunnyvale (Alison Way) – Mid-century modern Eichler home remodel and added living space【Alison Way Project】.

• Sunnyvale (Carlson Circle) – Complete Eichler renovation including a new bedroom wing【Carlson Cir Project】.

• Los Gatos (Broadway) – Custom addition on an Eichler-style home to expand the kitchen and family room【Broadway Los Gatos】.

For inspiration from more of our work, explore our Projects gallery or browse all Eichler home renovation projects on our site.  You’ll see how new additions can look like they were always part of the original Eichler design.

Eichler Remodeling Resources

We know planning an Eichler addition can raise many questions.  To help, our site has a wealth of Eichler remodeling articles and guides:

• Building an Eichler Home Addition: Design Tips – Key considerations for adding space while preserving Eichler style.

• The Do’s and Don’ts of Eichler Remodeling – Essential guidelines to keep your remodel on track.

• Budgeting for Your Eichler Renovation – How to plan finances for an Eichler home project.

• Energy-Efficient Upgrades for Eichler Homes – Tips on insulating and upgrading systems in Eichler additions.

• Converting Eichler Atriums into Living Space – Ideas for transforming Eichler courtyards into functional rooms.

• Eichler Seismic Retrofit & Earthquake Safety – Learn how to strengthen Eichler foundations and roofs.

You can also visit our FAQs for answers to common Eichler remodeling questions.  These resources showcase our deep knowledge of Eichler design and can help you envision your project.

Serving San Jose and the Bay Area

Though based in San Jose, GMJ Construction serves Eichler homeowners across the Bay Area.  In addition to San Jose, we regularly work in many Eichler communities, including:

• Campbell Eichler Remodels

• Cupertino Eichler Remodels

• Los Altos Eichler Remodels

• Menlo Park Eichler Remodels

• Palo Alto Eichler Remodels

• Redwood City Eichler Remodels

• Santa Clara Eichler Remodels

• San Mateo Eichler Remodels

• Sunnyvale Eichler Remodels

• San Jose Eichler Remodels – Current page (focus)

No matter where your Eichler home is located, our team can travel to consult and build.  We have deep experience working with local Bay Area building departments to get projects approved.

Why Choose GMJ Construction

Choosing GMJ Construction means choosing Eichler specialists.  For over 15 years, our San Jose firm has focused on mid-century modern homes.  We hold ourselves to the highest standards of craftsmanship and communication.  From day one, you’ll work directly with our skilled project managers and builders who understand Eichler nuances.  We provide free estimates and transparent quotes, so you know exactly what to expect.  Our About Us page has our company history and team credentials.  We’re licensed, insured, and committed to 100% customer satisfaction.

We handle every detail of the addition process: design, permits, construction, and finishes.  As one review notes, GMJ is “the go-to Eichler home contractor” in Silicon Valley.  We pride ourselves on turning ideas into reality while respecting your home’s unique character.  No request is too custom – whether it’s restoring original wood paneling or installing a custom Eichler-style skylight, we do it right.

Get Started on Your Eichler Expansion

If you’re ready to expand your Eichler home in San Jose, contact our team to schedule a consultation.  We’ll discuss your vision, show you relevant work examples, and explain the process step by step.  To get started, visit our Contact Us page or call us directly.  We look forward to helping you create the perfect addition that honors your Eichler’s legacy.

For immediate answers, check our FAQs page or explore our blog articles above.  Then reach out for a free quote and design meeting.  With GMJ Construction, your Eichler home additions and expansions will be handled by true experts who care.