Marsh Design | Build
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Licensed
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Responds within a day
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About
Marsh Design | Build was created out of a simple observation: too many projects fall apart in the space between design and construction. Customers are often left coordinating between designers, engineers, builders, and city officials—only to watch their original vision get diluted by miscommunication, delays, and change orders. Our firm was built to offer something better.
At Marsh Design | Build, design and construction are part of the same conversation from day one. Every project starts with a clear understanding of site conditions, code requirements, and client goals—so the design is grounded in what’s actually buildable, and the build stays true to the design. That continuity helps avoid the typical handoffs and disconnects that can derail even the best ideas.
Our firm is intentionally small and hands-on. Projects are chosen carefully, and the team stays involved throughout—from early feasibility studies all the way through to the final walkthrough. That means fewer layers, clearer communication, and greater accountability at every step.
Marsh Design | Build specializes in residential infill and custom residential and commercial renovations—projects that come with complexity, constraints, and real design opportunities. The goal isn’t just to build well, but to make the entire process feel clear, collaborative, and worth doing right.
Overview
Serves Portland, OR
Background checked
License verified
4 employees
12 years in business
Business hours
This pro hasn't listed their business hours.
Payment methods
This pro accepts payments via Apple Pay, Cash, Check, Credit card, Venmo, and Zelle.
Social media
Credentials
License verified
Contractor – Commercial General – Level 2
License state: OR
Background checked
Passed by Zach Marsh on Mar 12, 2025.
Services offered
Work needed
Project area
Garage
Basement
Storefront or business office
Addition
Property type
Residential
Commercial
Projects and media
Projects and media
Reviews
Exceptional 5.0
15 reviews
5
100%
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Read reviews that mention:
Lisa B.
Mar 8, 2026
From Google
Zach Marsh is a very competent, thorough and thoughtful contractor who helped us with design and advice for an ADU buildout. He does quality work and is a creative thinker for clients like us who needed an expert is all phases of the ADU process. I highly recommend them for design/build services. Zach is extremely knowledgeable on all phases of the construction process and they do beautiful work.
Jamis M.
Jan 5, 2026
From Google
I think its quite fitting that its during the holiday season that Im finally getting a moment to sit down to write this review because quite honestly - working with Zach was truly a gift. Its hard to articulate the level of appreciation (and perhaps admiration) I have for Zach. As a realtor that works with contractors daily - the level of discernment and lack of true trust is high. I can feel the need to micro-manage contractors because Ive seen one too many inspection reports. But I remember the day, early on-that I walked outside and fully gave up control to let Zac do his thing. Hes extremely detail oriented, meticulous, patient, kind---a true professional. He coached us through design, aesthetics choices, and answered all of our questions proactively. The communication was top notch!He far exceeded our expectations- he was always 10 step ahead of the timeline he planned out, finished ahead of schedule, and worked in several of our last minute requests with grace.Zach exhibits pride in his workmanship- and a commitment to delivering a great product/experience to his clients.Im a recovering perfectionist that doesnt take giving recommendations lightly. I can unequivocally say- that Zach is a rare treat to work with. 15 out of 5 stars!
Marsh Design | Build's reply
Truly grateful for the opportunity to work with you and deliver your ADU, Jamis. Thank you so much for the kind words!
Adam C.
Sep 23, 2025
From Google
I reached out to Zach about building a small detached office space in our backyard. He quickly responded and got to work putting together a very thorough and clear estimate. After a couple discussions with Zach, it was clear to both of us that our target budget wasn't going to fit their process so we decided to not move forward. However, even after that decision, he was more than willing to offer guidance and consultation on how we could go about finding a reputable contractor and complete the project within our budget. I greatly appreciate his honesty and graciousness even though we chose to go in a different direction. I strongly recommend Zach and his team to anyone in the Portland area who's looking for a reputable, honest, and trustworthy contractor.
Marsh Design | Build's reply
Thank you for the kind words, Adam! Best of luck on your project.
Camille B.
Sep 10, 2025
From Google
First off, if I could give more stars I would---Zach's work is a perfect 10 out of 5 stars. I cannot recommend him highly enough.He built a tiny home in my backyard this year. Not only is the finished product beautiful, but the process was better than I could have imagined. He was wonderful to work with.Zach was a great communicator through every step. He set us up with a time line for the many steps of the project, which he updated multiple times a week (and finished ahead of schedule). He also set us up with a spreadsheet so it was clear to us what design/hardware decisions we needed to make and on what timeline. He was patient and so helpful with all of our questions. I've never experienced that level of organization and transparency.He has a great eye for design and helped us make smart decisions that uphold our aesthetic design, while also making the space super functional. His work is very high quality and though I have learned from other experiences to always be skeptical of contractors, he earned our trust and held it. Being able to trust a contractor like this is such a rare gift.Zach has such strong integrity, he's very smart, and is a genuinely kind person. I can't imagine working with any other contractors from now on, Zach is really the best.I *highly* recommend you work with him for your project, he will not let you down.
Marsh Design | Build's reply
Thank you so much, Camille! We loved working with you on your ADU!
Ean L.
Jul 28, 2025
From Google
We work with Marsh Design on two significant remodel projects at our home and could not be happier with the quality of the work as well as the overall service they provided. Our remodels posed structural challenges that required creative solutions to get our desired results and Marsh Design was able to deliver and keep budgets within our targets. We will undoubtedly call on them again for any other projects we have.
Marsh Design | Build's reply
Thank you, Ean!