Commercial Construction · Portland, OR
Commercial Construction Done Right.
De Marco Builders brings the same craftsmanship, accountability, and critical path scheduling that Portland homeowners trust — to commercial projects of every size.
Built for both
Thirty Years of Construction Experience. Residential and Commercial
Our expertise doesn't stop at the front door of a custom home. We bring the same team, the same standards, and the same critical path approach that has made us a household name in Portland residential construction — to commercial projects of every size and scope.
Every commercial project we take on is held to the same bar as the custom homes Portland families have trusted us with for three decades. If you need a commercial contractor who shows up, communicates clearly, and delivers what they promised — you're in the right place.
Construction that Performs
Commercial Work Demands More. We Deliver It.
Commercial spaces are used differently than residential ones. They accommodate more people, absorb more daily wear, and are held to stricter regulatory standards — all of which demand a higher level of precision during construction. A well-built commercial space accounts for those demands from the start, with structural decisions, material selections, and mechanical systems specified for the environment they will be operating in.
The difference between a commercial build that ages well and one that doesn't usually comes down to the decisions made before construction begins — how thoroughly the project was planned, how carefully the specifications were drawn, and how closely the work was supervised during execution. De Marco Builders brings nearly three decades of construction experience to every commercial project — the kind of experience that shows in the quality of the finished space and in the confidence of knowing the job was done right.
THE PROCESS
What to Expect.
Commercial construction projects move through several distinct phases — pre-construction planning, permitting, site preparation, and construction — each requiring precise coordination to keep the project on schedule and within budget. The pre-construction phase is particularly important in commercial work, as code requirements, occupancy classifications, and commercial building standards add layers of complexity that need to be addressed thoroughly before work begins. A complete and accurate plan at the outset is what keeps a commercial project moving cleanly from one phase to the next.
Once construction is underway, clients should expect consistent communication, documented change management, and a job site that is maintained to a professional standard throughout. Commercial projects often involve active businesses, occupied neighboring spaces, or time-sensitive openings — all of which require a level of coordination and site management that goes beyond standard construction practice. Nearly three decades of commercial and residential construction experience means those demands are not new territory. Every phase is managed with the precision and accountability that a project of this nature requires, and every finished space is one that is built to code, delivered on schedule, and ready to perform from day one.
WHY DEMARCO
Why Portland Clients Choose Us.
Portland's longest-serving custom builder
In business since 1996, we know Portland's neighborhoods, soils, permits, and inspectors better than anyone.
Fixed price, fixed schedule
What we quote is what you pay. The date we give you is the date we hit. No surprise change orders, no budget creep, no exceptions — not once in 30 years of Portland construction.
One team from start to finish
Design, permits, construction — same crew, same point of contact, from the first site walk to the day we hand you the keys. No gaps in accountability, no finger-pointing when something needs to be fixed.
Award-winning craftsmanship
Recognized by Portland Monthly and the NW Natural Street of Dreams.
Family-owned since day one
Same owners, same values, nearly three decades running. You work with the people whose name is on the door.
Serving all of Portland Metro
From Lake Oswego and West Linn to Beaverton, Tigard, and every Portland neighborhood in between.
FAQ
Common Questions.
Can't find the answer you're looking for? Reach out and we'll get back to you within one business day.
Do you offer free estimates?
Yes
How long does a typical project take?
It depends on the size, scope, design complexity and permit process.
Typical project timelines include:
- ADUs: 45–60 days
- Home Additions: 45–90 days
- Remodels: 30–90 days
- Custom Homes: 90–160 days
- Commercial Projects: 90–160 days
How do you price a project?
Every proposal from De Marco Builders provides complete cost transparency. Our estimates clearly show the construction costs, company overhead, profit, and total project cost so clients fully understand where every dollar is allocated.
Do you require a deposit?
No. Never. We do not require an upfront deposit. The first payment is due only after a portion of the contracted work has been completed.
What happens if costs change during the project?
We guarantee the contract price through project completion unless the homeowner requests additional work beyond the original scope or unforeseen structural conditions are discovered that were not visible during the initial evaluation.
Can you work within a specific budget?
Absolutely. De Marco Builders is a budget-driven builder. We work within the client’s established budget throughout the design, engineering, permitting, and construction phases. We utilize value-engineering principles to maximize quality while maintaining budget goals.
Are you licensed, bonded, and insured?
Yes. De Marco Builders is fully licensed, bonded, and insured. We maintain all required certifications and operate in full compliance with state regulations.
How do you handle unexpected issues that come up mid-project?
Unexpected issues are rare because of our extensive experience and thorough planning process. If an unforeseen issue does arise, it is addressed immediately, typically within 24 hours. We resolve issues in a code-compliant manner while protecting the project schedule.
How often will I receive updates?
Communication is one of our highest priorities. Once a client signs a contract, we maintain frequent communication throughout design, engineering, permitting, and construction. Clients receive regular progress updates, photos, and end-of-day reports so they remain informed from start to finish.
Our Projects
Recent Work
Design-Build Custom Home Portland | De Marco Builders
See how De Marco Builders transformed a 900 sq ft 1946 bungalow into a 2,400 sq ft custom home in just 120 days. Portland’s design-build general contractor.
Whole Home Remodel in NE Portland | De Marco Builders
Studs-out renovation: new electrical, plumbing, HVAC, two primary suites, relocated kitchen, and white oak finishes — completed in 120 days. Portland remodel contractor.
Backyard Cottage ADU Built in 89 Days | De Marco Builders
One of Portland’s most efficient ADU builds: an 800 sq ft craftsman backyard cottage, fully permitted and completed in just 89 days.
Ready to Build Something
You'll Love?
Get a free consultation with our team — no commitment, just a conversation about what's possible.
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