Custom Eichler Additions & Structural Upgrades in Emerald Hills, CA

Over 50+ Eichler projects in Emerald Hills & surrounding cities!

Your one‑stop shop for Emerald Hills additions – permits, financing, design and build. From concept to completion, our team handles every step so you don’t have to.

  • We stay on schedule so your new living space is finished quickly.

  • IN HOUSE Designer! We customize your project A-Z.

  • FREE Project CONSULTATION! Don't hesistate to call us.

We are a Family-Owned Business with 15 Years of Experience. Get Started by calling us at (408) 780-0479.
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Why Eichler Homes Deserve Specialized Care

Eichler houses are design landmarks; their exposed beams, radiant floors and post‑and‑beam structure require deep respect for the original vision. Our Eichler remodeling experts understand the details that matter and bring them back to life with precision, blending new spaces seamlessly with the existing home.

Built for Icons

Emerald Hills’s Top Choice for Eichler Remodeling and Construction

At GMJ Construction, being the No.1 Eichler Emerald Hills 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.

The Eichler Standard

Eichler Home Additions & Modern Living

A renovated Eichler-style kitchen blends classic mid-century details with modern finishes. Eichler homes are celebrated examples of California Modern architecture , known for their open layouts, exposed wood beams, and strong indoor-outdoor connections . When designing a custom room addition or ADU for an Eichler in Emerald Hills, we honor these hallmarks.  For example, Eichlers use post-and-beam framing that eliminates interior load-bearing walls, allowing wide, open interiors. We replicate that by aligning new support posts and matching exposed wood ceilings so that additions flow seamlessly from old to new.  Signature features like floor-to-ceiling glass walls and atriums blur the line between indoors and outdoors , so our designs often include sliding glass doors or interior courtyards to flood living spaces with light. The result is a carefully integrated expansion that preserves the home’s original character and celebrates Eichler style.

  • Custom Additions: Expand your living space with our Eichler-friendly room additions and Accessory Dwelling Units (ADUs). We match materials (wood siding, clerestory windows, etc.) and roof lines so new rooms feel original to the home.

  • Design & Planning: Our Planning & Design team crafts architectural plans that honor Eichler aesthetics and secure permits. We work in-house or with architects to ensure your addition maintains the iconic flat-roof, open-plan look.

  • Interior Remodeling: We modernize Eichler interiors while respecting original details. Our experts handle kitchen remodeling, bathroom remodeling, new flooring (wood, tile, etc.), drywall & insulation, custom cabinetry, and painting.  Each finish is chosen to complement Eichler’s minimal, natural-material palette.

  • Exterior & Finishes:  For exterior upgrades, we install new siding that matches Eichler vertical-grain wood or panels, update trim and doors, and repaint in colors that suit mid-century modern taste. These upgrades enhance curb appeal while maintaining mid-century character.

Structural Upgrades & Seismic Safety

Because Eichlers were built under older codes, structural strengthening is critical in seismic California. GMJ’s engineers design retrofits that tie your house together from roof to foundation – a “continuous load path” – greatly improving earthquake performance. We bolt new additions securely to the existing slab, install engineered shear walls, and reinforce roof-wall connections as needed. Each retrofit is customized to the Eichler plan; for example, we strengthen oversized glass walls and post-and-beam joints without altering the open feel. These upgrades ensure your Emerald Hills Eichler meets modern codes and keeps your family safe, all while preserving the home’s iconic openness.

Full-Service Eichler Remodeling Expertise

GMJ Construction offers comprehensive Eichler remodeling – from concept to completion. Our in-house team coordinates every aspect of your project. We begin with a detailed design phase, then manage all permits and inspections (often via our services/planning-design process). Throughout construction, we preserve the Eichler heritage noted by enthusiasts: “these homes have been meticulously maintained or restored, preserving their original character”. In practical terms, that means our craftsmen recreate Eichler details (exposed tongue-and-groove ceilings, clerestory windows, radiant-floor plumbing, etc.) wherever possible. We handle any interior finishing or upgrades you need – new flooring, drywall, lighting, cabinetry, and fixtures – ensuring the result is both modern and authentic. As one Bay Area Eichler guide notes, each Eichler is an architectural treasure , and GMJ treats it as such: we aim for designs that balance innovation and livability while honoring the original mid-century vision.

Why Choose GMJ for Emerald Hills Eichler Projects

With 15+ years of Bay Area experience, GMJ Construction is a local leader in Eichler renovations. We live and work near Redwood City and understand the Emerald Hills market and neighborhood context (Redwood City Eichlers, while few, are “highly sought after” ).  Our team includes Eichler specialists who know how to navigate unique challenges – from flat roof details to radiant floor systems – that general contractors often miss.  We offer a one-stop solution: as a full-service contractor, we handle additions and finishes and coordinate with structural engineers for seismic retrofits.  To see examples, visit our Projects page or read about other Bay Area Eichler remodels on our Blog.

Contact GMJ for Your Emerald Hills Eichler Project

Ready to transform your Eichler in Emerald Hills? GMJ Construction serves Emerald Hills (Redwood City) and the surrounding Bay Area with custom Eichler additions and upgrades. Contact us today to schedule a consultation and free estimate.  Our team will assess your home, explain the best way to expand or upgrade it, and show how we can preserve its mid-century charm. Learn more about our company on our About Us page, or reach out directly via our Contact Us form. Let’s bring your Eichler home into the future while honoring its past.

We Know Eichlers. Inside and Out.

Chosen by Eichler Homeowners

We’ve earned our reputation by doing what others won’t—respecting the architecture, mastering the details, and delivering flawless results. If you own an Eichler, you need a team that understands what makes it special. That’s us.

Eichler Home Projects We Specialize In

See Our Projects

From restoring mid-century icons to modernizing Eichler spaces in Emerald Hills with care, our portfolio highlights the precision and creativity that define GMJ Construction.

Built to Impress. Proven in Every Project.

GMJ ConstructionExcellentGMJ Construction5.0 Based on 35 reviews fromSee all reviews review us onTejas BahulkarTejas Bahulkar ★★★★★ We recently worked with GMJ Construction on a complete Eichler home renovation, including a full remodel, a room addition, and a junior ADU, and we are beyond thrilled with the results. Joseph, Memo, and Uriel were amazing throughout the entire process professional, attentive, and committed to making sure everything came out exactly as planned.All of our bathrooms were fully renovated, the kitchen was transformed, and every detail followed the architectural plans and design perfectly. As owners of an Eichler home, it was important for us to find experienced Eichler general contractors, and GMJ Construction exceeded our expectations. They modernized our home while preserving the unique mid-century Eichler style.We highly recommend Joseph, Memo, Uriel, and the entire GMJ team to anyone in Sunnyvale, Palo Alto, San Mateo, or San Jose looking for trusted contractors for a kitchen remodel, room addition, complete home renovation, or ADU project.Thank you for turning our vision into a reality!Gaurav MalhotraGaurav Malhotra ★★★★★ We recently completed a full renovation of our Eichler home in Palo Alto with GMJ Construction, and we couldn’t be happier with the results. From the very beginning, Memo and Uriel were incredibly professional, responsive, and clearly experienced with the unique details and challenges that come with remodeling an Eichler. Our project involved a complete reconfiguration of the layout, a full kitchen remodel, bathroom renovations, new flooring throughout the house, fresh interior and exterior paint, and even some major structural changes. What really stood out to us was how GMJ respected the original mid-century modern Eichler design while still helping us modernize the space for functionality and comfort. They understood the importance of preserving the post-and-beam architecture, the open floor plan, and the indoor-outdoor feel that Eichlers are known for. The kitchen transformation was stunning and truly brought the heart of the home back to life. The bathrooms now feel clean, bright, and thoughtfully designed, and the new floors were installed with care to preserve our radiant heating system. GMJ Construction made the process smooth, and we always felt informed and supported throughout the project. If you’re looking to remodel or renovate your Eichler home in the Bay Area, we highly recommend working with GMJ Construction they really are experts when it comes to Eichler homes and mid-century modern renovations.Fred SchwalbachFred Schwalbach ★★★★★ We had an amazing experience working with GMJ Construction on our Eichler home renovation in Sunnyvale. Joseph, Uriel, and Memo were incredibly knowledgeable about Eichler homes and helped us design and build a stunning new kitchen and bathroom that perfectly blends modern upgrades with the mid-century aesthetic. Their attention to detail and expertise in Eichler construction made all the difference. If you’re looking for a team that truly understands Eichler home design and renovation, GMJ Construction is the best choice!Stephen ScordelisStephen Scordelis ★★★★★ GMJ Construction did a fantastic job remodeling my entire home, and I couldn’t be happier with the outcome. Joseph was instrumental in managing the project, keeping everything on schedule, and making sure all the details were handled properly. He even joined me in selecting materials for my kitchen and bathrooms, ensuring we made the right choices for both style and durability. Memo and the crew were hardworking and professional, always attentive to my requests. The remodel was completed on time and on budget, the final look of my home is absolutely stunning. I highly recommend GMJ Construction to anyone considering a remodel!Jessica L.Jessica L. ★★★★★ My experiences with GMJ Construction and more specifically my project manager, Joseph, were all great!! I had just bought my first home, a condo, and I was...Abby YAbby Y ★★★★★ When hiring a contractor for a job whether it is big or small is not easy specially when you want them to do the work properly with the right price to your satisfaction. We went through different contractors and decided to go with GMJ Construction.Joseph Malka was the project manager assigned to us. We are very happy to have him on board with our project together with Memo, Uriel, Ramin, Ofir, Omar, Sarah, Jaime, and the rest of the crews. They were very professional, easy to communicate, and Joseph always answer our concerns and questions every time he came to check on the work progress even on his busy schedule.The scope of the work includes replacing wood beams, wood sidings, front columns, new front stairs and landing, backyard cement patio and exterior paint.At one point the project was put on hold while waiting for the approval from the City. Joseph tries to keep the project going even with the delayed and the difficulties we encounter. GMJ crews understand and response to our concerns, issues that need to be address and they response in a timely manner until the project was completed. We are very satisfied with the work and its workmanship and the work crews keep the job site clean after they are done.Joseph even gave us recommendation for hvac and roofing company which we decide to work with. They were also very professional and the workmanships was very satisfactory. We greatly appreciate Joseph for the recommendation.So, in conclusion we are very happy with the results and will use them again in our future project and definitely recommend them.Abby Y.Abby Y. ★★★★★ When hiring a contractor for a job whether it is big or small is not easy specially when you want them to do the work properly with the right price to your...chiachinkuchiachinku ★★★★★ When we decided to remodel our whole house, we interviewed total 6 of contractors within 6 months. It was a time consuming and painful process because we didn’t want to make a wrong decision. From the sales presentation to physically visited their ongoing projects, Joseph from GMJ Construction impressed us the most. He explained to us the whole process and the owner, Memo, also provided the technical suggestions in details. We were convinced by their positive attitude and professional knowledge, we decided to hire them to be our contractor.The workers showed up on time, they always cleaned up the job site before they finished the day work. We met with Joseph, Uriel and Memo to review the progress and what to do next whenever we needed.GMJ Construction is very reasonable and flexible when working with us. They valued our feedback about their work, crews always asked me: “Are you happy with our work?” every time when I stopped by the job site. They took every comment we made seriously.Memo and Uriel perfectly managed the whole process, and they even finished the job ahead of the originally estimated time.We appreciate GMJ who kept their promise and provided us a wonderful “brand new” house. Many thanks to Memo, Uriel, Joseph and all crews involved in our project.Picking up a right and good contractor is not easy, sometimes you need some luck. We are happy to have GMJ as our contractor. We are highly recommended GMJ to our friends and whoever needs to do the remodel work.Sherro K.Sherro K. ★★★★★ When we decided to remodel our whole house, we interviewed total 6 of contractors within 6 months. It was a time consuming and painful process because we...Second Nature LimousineSecond Nature Limousine ★★★★★ We've been looking for a contractor from Palo Alto, CA for our bathrooms remodeling project for a while until we chose to go with GMJ Construction.We were very impressed with Joseph, our project manager, from the first meeting. He was very knowledgeable, professional and easy to talk to. We valued a lot the fact the hiring him meant he took care of all from A-Z, he referred us to the right showrooms and the right vendors and made sure we got the best price for the best materials so that we wouldn't have to spend time researching ourselves.We are very happy with how our bathrooms turned out (beautiful!) and couldn't have made a better decision than hiring GMJ Construction to do this project. The whole remodeling process went as smoothly as possible and we managed to stay within our budget. I highly recommend Joseph and will definitely hire him again for future work!Hr KawsarHr Kawsar ★★★★★ We contacted GMJ Construction to get an estimate on some considerable kitchen and bathroom remodeling we wanted to get done. Memo was able to check out the house on relatively short notice and spent a good amount of time walking through the project, giving me his thoughts, and taking measurements. He came off as super experienced and honest, even taking the time to give me his thoughts on other contractors' estimates. His estimate was very detailed and the pricing was fair compared to others in Saratoga.The experience with GMJ and Memo was a memorable and very positive one. We will most definitely be returning customers, as we have more home remodeling projects ahead.js_loader

Frequently Asked Questions

Our team specializes in Eichler additions and renovations, blending modern functionality with the original design while respecting the home’s architectural integrity.

Your Questions, Answered.

  • Can you add a second story to my home as part of the addition?

    Yes, we can add a second story to your home, ensuring it matches the existing structure seamlessly.

  • Can you match the design of the addition to the existing home?

    Yes, we ensure seamless integration with your existing home’s style.

  • What types of rooms can you add to a home (e.g., bedrooms, offices)?

    We can add bedrooms, home offices, sunrooms, or any custom space you need.

  • Do you handle the permitting process for room additions?

    Yes, we manage all permitting and inspections for your addition.

  • How long does it take to complete a room addition project?

    Most room additions take 3-6 months, depending on the size and complexity.

  • Can you provide cost estimates for different types of additions?

    Yes, we offer detailed estimates based on your preferences and requirements.

Contact us

Looking to start your project? Just fill out the form and we will call you back. Or you can contact us via: [email protected]

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