Built to open on time
Commercial Construction in Hillsboro.
Your opening date drives everything. De Marco Builders works as your commercial contractor in Hillsboro, handling offices, retail spaces, and tenant improvements from the first walkthrough through final inspection. We’re licensed, bonded, and insured, and we’ve been building across the Portland metro for over three decades.
Opening day ready
Commercial Construction That Stays on Track
Hillsboro’s building landscape is varied. Tech and manufacturing employers sit alongside medical offices, neighborhood retail centers, and older buildings that still have plenty of life left in them. Each calls for different planning, and a contractor who only handles one type of project may not spot the complications early enough.
De Marco Builders takes on both residential and commercial work across Hillsboro. We plan each project from the start, price it in writing, map the schedule’s critical path, and stay accountable with one team from first walkthrough to final inspection. For a business, that means a build-out that opens when promised.

Rooted in HIllsboro
A Commercial Contractor That Understands Hillsboro.
There's a real difference between a contractor who works in Hillsboro and one who knows it. We're familiar with the area's permitting timelines and the range of commercial building conditions across the city.
We bring that awareness to every job. Before construction begins, we look at the building, the site, and how the space will be used. Those early conversations save time later. If an active retail center limits work hours or an older foundation needs attention, we can plan around it while there’s still room to adjust.
THE PROCESS
What to Expect.
Commercial construction moves through several distinct phases — pre-construction planning, permitting, site preparation, and construction — each requiring precise coordination to stay on schedule and on budget. In Beaverton, that planning phase matters even more, since building codes and permit requirements need to be worked out thoroughly before anything breaks ground.
Once construction is underway, expect consistent communication, documented change management, and a job site maintained to a professional standard throughout. Commercial projects often involve active businesses or time-sensitive openings — coordination that goes beyond standard construction practice.
WHY DEMARCO
Why Hillsboro Clients Choose Us.
Hillsboro's longest-serving custom builder
In business since 1996, we know Hillsboro'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 surprises, no exceptions — not once in over 1400 construction projects in the Portland metro.
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, the NW Natural Street of Dreams, BuildZoom, Nextdoor, and BusinessRate.
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 Hillsboro to Lake Oswego, Beaverton, Cedar Hills and every Portland neighborhood in between.
Our Services
Everything We Build in Hillsboro
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

A Home Renovation in NE Portland
De Marco Builders completed a full interior and exterior renovation, transforming a 1936 NE Portland home into an updated Portland […]

More Room to Grow: A Restaurant Expansion in Hillsboro
De Marco Builders delivered this commercial build in Hillsboro, Oregon — a new banquet room, a redesigned entrance, and a […]

Design-Build Custom Home in Portland
See how De Marco Builders transformed a 900 sq ft 1946 bungalow into a 2,400 sq ft custom home in […]
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You'll Love?
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