Top MEP Engineering Firms in Oregon

From Cascadia-resilient hospitals in Portland to net-zero campuses in Bend, Oregon’s commercial construction market depends extensively on MEP engineering to work safely and efficiently. The ideal MEP partner plays a significant role in shaping permit deadlines, energy code compliance, and lifecycle operating expenses, as much as the architecture itself.

This blog outlines six of the top MEP engineering firms shaping Oregon’s construction environment, featuring their specialties, noteworthy projects, and how each fits diverse project types, from end-to-end Portland consultancies to scalable remote engineering partners that expand an architecture firm’s production capacity.

National MEP Engineers

This is an organization that operates differently from the rest on this list. Rather than a conventional walk-in Oregon office, National MEP Engineers is a PE-licensed MEP engineering design partner working across the entire United States. At its core, the firm functions as an extended MEP production team for AEC firms. Oversighted by vastly experienced PEs, this organization delivers end-to-end MEP, fire protection, and energy-modeling engineering design support through a methodical SD, DD, and CD workflow, coordinated in Revit with a three-layer QC procedure. For Oregon firms experiencing expedited tenant improvements, multi-site rollouts, or overflow capacity without extra headcount, National MEP Engineers’ MEP engineering support yields PE-stamped, permit-ready drawings without the overhead of an internal MEP team.

Best for: scalable, offshore MEP production support for Oregon architecture firms.

PAE

Just over a month ago, PAE was named ENR West’s 2026 Northwest Design Firm of the Year. The firm is a Portland-based MEP and sustainability consulting business. In 2025, this organization reported about $70 million in West Coast revenue, and two-thirds of it came from Pacific Northwest work.

PAE offers comprehensive MEP engineering, LUMA lighting design, energy analysis, and carbon consulting, and is a signatory of the MEP 2040 Challenge. In Oregon, the company has worked on a wide range of projects, spanning Passive House, LEED Platinum, and Living Building Challenge projects, backed by an internal embodied-carbon tool. Firms pursuing net-zero goals or aggressive electrification in the state often shortlist PAE’s MEP and sustainable design services.

Best for: large-scale decarbonization and high-performance building engineering.

Glumac, a Tetra Tech Company

Part of Tetra Tech’s High-Performance Buildings Group, Glumac has been operating in Portland and across Oregon for over 50 years now and ranks among the state’s most established MEP and sustainability consulting firms.

Its Oregon portfolio includes projects for clients like Nike, the Oregon Convention Center, the Oregon State Treasury Department, and the Oregon Military Department. Beyond the main MEP design, Glumac integrates energy modeling, lighting, commissioning, and technology design into a single coordinated scope using Autodesk BIM 360 to tackle net-zero energy and net-zero water projects. The global Tetra Tech network gives Oregon clients access to extensive MEP engineering resources for complex, multi-site projects.

Best for: net-zero campuses and large institutional or corporate projects.

Mazzetti

The only employee-owned Benefit Corporation in this list is Mazzetti. Incorporated in San Francisco in 1962, this firm has an office in Portland that can be traced back to CBG Engineers in 1977, along with another office in Eugene.

Mazzetti focuses on life sciences and healthcare MEP engineering, exemplified by its work on Oregon Health & Science University’s Doernbecher Children’s Hospital intraoperative MRI suite. The firm’s “foursight” approach combines MEP and technology consulting with medical equipment planning and climate-action consulting under its BLUE platform. As a Benefit Organization, Mazzetti is bound by agreement to public-benefit goals, as well as profitability, a structure that many Oregon healthcare systems consider when commissioning MEP engineering for resilience-critical infrastructure.

Best for: life sciences, healthcare, and mission-critical facilities.

Interface Engineering

Founded in Portland in 1969, Interface Engineering is among the longest-serving MEP firms with Oregon roots. The company became 100% employee-owned via an Employee Stock Ownership Plan in January 2025.

This firm now has over 250 employees, distributed across nationwide offices while keeping Portland as its main location. Interface provides all-inclusive MEP, fire and life safety, lighting, building technology, and commissioning services, with a long-standing track record in net-zero and high-performance building design. Its employee-ownership structure ties technical quality and staff retention directly to project outcomes, a benefit Oregon firms seldom cite when opting for a multidisciplinary engineering partner for complex developments.

Best for: homegrown Oregon expertise with employee-ownership accountability.

ColeBreit Engineering

Starting its journey in Bend in 2013 by Laura Breit, PE, ColeBreit Engineering is the largest certified women-owned MEP engineering firm in the Pacific Northwest, with additional Oregon offices in Medford, Eugene, and Portland.

Following its merger with Axiom Engineers, the organization has grown to over 50 team members, serving healthcare, commercial, education, and industrial clients. ColeBriet’s recent project engagements include PacificCorp’s LEED-Platinum-goal regional headquarters in Bend and a renewable-energy resiliency study for the Deschutes County Fair and Expo Center. The firm offers MEP, energy and sustainability, fire protection, and commissioning services, coupling small-firm responsiveness with the technical expertise that Oregon’s MEP engineering and design projects need outside the Portland metro core.

Best for: agile, women-owned MEP support throughout Central and Western Oregon.

What Separates Top MEP Partners in Oregon

The six firms above demonstrate two different paths: established local consultancies with decades of Oregon project history and remote, PE-led production partners positioned for scalability.

uppteam sits inside that second path. Being an AEC remote support provider, uppteam supplies architecture and engineering firms with BIM coordination, drafting, and documentation support that complements the above-mentioned top MEP partners in Oregon. All these services help Oregon project teams advance from concept to permit-ready construction documents faster, without adding a single headcount to the in-house team.

Frequently Asked Questions

What does an MEP firm do in an Oregon construction project?

An MEP engineering firm designs MEP and often fire protection systems that ensure a building remains safe, code-compliant, and operational, coordinating with architects from the SD phase through the CD phase and permit approval.

How to choose the right MEP engineering firm for an Oregon project?

The first key step is to match the firm’s sector-specific experience to your project type, followed by confirming that the firm holds active Oregon PE licensure. The next crucial step is to verify the firm’s expertise with Oregon’s seismic, energy, and Reach Code requirements alongside your preferred BIM workflow.

Can a remote MEP engineering team truly deliver permit-ready drawings for Oregon projects?

Yes, without a doubt. PE-licensed remote firms have the capability to generate fully stamped, code-adherent construction documents for Oregon jurisdictions, as long as the engineer of record holds an active state-specific license.

What sustainability standards do MEP engineers in Oregon typically design to?

The most common targets include LEED, Passive House, the Living Building Challenge, the state’s energy efficiency code, and decarbonization commitments such as the MEP 2040 Challenge, especially in Portland’s commercial and institutional sectors.

How can Oregon architecture firms scale MEP capacity without hiring in-house engineers?

Many firms these days pair a licensed MEP engineering partner with a remote MEP design support provider like uppteam, which provides drafting, BIM coordination, and documentation support to ensure the architectural team scales output without increasing the internal workforce.