Company lists · Data refreshed September 2026

Top 21 Infrastructure consulting firms based in Portland, United States

RevenueBase identified 72 infrastructure consulting firms headquartered in Portland, United States as of September 2026 and tracks 2,670 professional contacts across them, including 1,443 with verified work emails. New York is the largest hub.

This list covers infrastructure consulting firms headquartered in Portland, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
72Companies
2,670Contacts tracked
1,443Verified emails
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The 21 largest infrastructure consulting firms based in Portland, United States

Ranked by team size
Top 21 of 72 infrastructure consulting firms based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
OTAKIndirect evidence
Portland, OR, United StatesHQ checked Sep 3, 2026201-500345

“Otak values people, both those in our workplace and those that are impacted by the projects we undertake.”

Source: company website · checked Sep 3, 2026
2
Whpacific, An Nv5 CompanyIndirect evidence
Portland, OR, United StatesHQ checked Sep 3, 20261,001-5,00077

“WHPacific was acquired by NV5 in July of 2019.”

Source: company website · checked Sep 3, 2026
3
Norwest Engineering INCPartial evidence
Portland, OR, United StatesHQ checked Sep 3, 202651-20041

“Norwest Engineering is a multi-disciplined, consulting engineering firm focused on developing long-standing relationships with our clients.”

Source: company website · checked Sep 3, 2026
4Portland, CT, United StatesHQ checked Sep 3, 202611-5031

“Snyder Civil is a cohesive team of water system professionals based in central Connecticut.”

Source: company website · checked Sep 3, 2026
5
Radha ConsultingPartial evidence
Portland, OR, United StatesHQ checked Sep 3, 202611-5023

“Radha Consulting was founded in 2005 to respond to the growing market need in the public sector for consulting services.”

Source: company website · checked Sep 3, 2026
6
Cascadia PartnersIndirect evidence
Portland, OR, United StatesHQ checked Sep 3, 202611-5020

“Cascadia Partners are a multi-disciplinary team with decades of experience in planning, design, development finance, sustainability, project management, and community engagement.”

Source: company website · checked Sep 3, 2026
7
Leland Consulting GroupPartial evidence
Portland, OR, United StatesHQ checked Sep 3, 20261-1014

“At Leland Consulting Group, we specialize in working with clients to create quality development and redevelopment projects that are financially viable and foster a greater sense…”

Source: company website · checked Sep 3, 2026
8
Summit Water ResourcesIndirect evidence
Portland, OR, United StatesHQ checked Sep 3, 20261-1013

“Summit Water Resources has more than 100 years of combined experience in the development of municipal, agricultural, and industrial groundwater supply, aquifer storage and…”

Source: company website · checked Sep 3, 2026
9
Jarrett Walker AssociatesPartial evidence
Portland, OR, United StatesHQ checked Sep 3, 202611-5012

“Jarrett Walker + Associates was founded in 2011 by Jarrett Walker, the author of Human Transit, who has been a consulting expert in public transit planning and policy since 1993.”

Source: company website · checked Sep 3, 2026
10
Pioneer Design Group, INCIndirect evidence
Portland, OR, United StatesHQ checked Sep 3, 202611-5010

“Pioneer Design Group, Inc, located in Portland, Oregon, provides civil engineering, land use planning, land surveying, landscape architecture and development services.”

Source: company website · checked Sep 3, 2026
11Portland, OR, United StatesHQ checked Sep 3, 202611-509

“System Design Consultants, Inc.(SDC), is celebrating 35 years in the Portland design community, providing mechanical and electrical engineering services for commercial and…”

Source: company website · checked Sep 3, 2026
12Portland, OR, United StatesHQ checked Sep 3, 202611-508

“Allstructure Engineering, LLC is a full service consulting Structural Engineering firm established in 2005.”

Source: company website · checked Sep 3, 2026
13Portland, OR, United StatesHQ checked Sep 3, 202611-507

“Founded in by Gary Livermore, a dually licensed architect and structural engineer, LAE has made a mark both in Oregon and throughout the United States as an effective commercial…”

Source: company website · checked Sep 3, 2026
14
Mgp, INCPartial evidence
Portland, ME, United StatesHQ checked Sep 3, 202611-507

“MGP is a business consulting firm dedicated to delivering superior results to our customers.”

Source: company website · checked Sep 3, 2026
15Portland, OR, United StatesHQ checked Sep 3, 20261-106

“Leeway Engineering Solutions (LW) provides unique solutions for water and wastewater public works service providers.”

Source: company website · checked Sep 3, 2026
16
Indelible LLCIndirect evidence
Portland, OR, United StatesHQ checked Sep 3, 202611-506

“About Indelible At Indelible, we are more than just a consultancy; we are your Trusted Advisors in IT, Security, and Project Management.”

Source: company website · checked Sep 3, 2026
17
Angelo Planning GroupIndirect evidence
Portland, OR, United StatesHQ checked Sep 3, 202611-506

“Angelo Planning Group (APG) is a leader in the urban and community planning field.”

Source: company website · checked Sep 3, 2026
18
Arris ConsultingPartial evidence
Portland, OR, United StatesHQ checked Sep 3, 20261-106

“Arris Consulting was formed in 2019 by Brian Butler and Andrew Craig in Portland, OR and in 2021 brought Shane Fitzpatrick on as plumbing principal.”

Source: company website · checked Sep 3, 2026
19
Curran-Mcleod, INCIndirect evidence
Portland, OR, United StatesHQ checked Sep 3, 20261-106

“Patrick D.”

Source: company website · checked Sep 3, 2026
20
StratonetIndirect evidence
Portland, OR, United StatesHQ checked Sep 3, 20261-105
Source: company website · checked Sep 3, 2026
21
Treat Consulting GroupPartial evidence
Portland, OR, United StatesHQ checked Sep 3, 20261-105

“The Treat Consulting Group provides technical and business growth/planning consulting services for the Hi-Tech and Industrial market sectors.”

Source: company website · checked Sep 3, 2026

Showing 21 of 72 infrastructure consulting firms based in Portland, United States

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Infrastructure consulting firms based in Portland, United States at a glance

As of Sep 3, 2026
1-10Median size (employees)
New YorkLargest hub · 306 HQs
Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
43
11-50
18
51-200
5
201-500
4
501-1,000
1
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 72 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among infrastructure consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Portland, United States whose own description of what they do matches “infrastructure consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Portland are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 1,443 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 3, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Infrastructure consulting firms by metro in the United States

Frequently asked

How many infrastructure consulting firms are there based in Portland, United States?

RevenueBase identified 72 infrastructure consulting firms headquartered in Portland, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

OTAK, headquartered in Portland, tops this list with the largest team on record.

Which city has the most infrastructure consulting firms?

New York leads with 306 headquartered companies, followed by Houston (293) and Washington (158).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,443 verified decision-maker contacts tracked across these 72 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.