Company lists · Data refreshed September 2026

Top 25 Business advisory and consulting firms based in Portland, United States

Name: Business advisory and consulting firms based in Portland, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 218 companies tracked

RevenueBase identified 218 business advisory and consulting firms headquartered in Portland, United States as of September 2026 and tracks 2,122 professional contacts across them, including 1,252 with verified work emails. Across the United States, New York is the largest hub for this category (1,895 companies); Portland has 218.

This list covers business advisory and 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 23, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 23, 2026 86% judged on-target in blind review

218Companies

2,122Contacts tracked

1,252Verified emails

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The 25 largest business advisory and consulting firms based in Portland, United States

Ranked by team size

Top 25 of 218 business advisory and consulting firms based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business advisory and consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Aldrich	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	201-500	410 contacts →
	Indirect evidence “For more than 50 years, Aldrich has worked with businesses, their owners, and their employees to help them achieve their professional and personal financial goals.” Source: RevenueBase Database · checked Sep 23, 2026
2	Baker Newman Noyes	Partial evidence	Portland, ME, United StatesHQ checked Sep 23, 2026	201-500	336 contacts →
	Partial evidence “Baker Newman Noyes is one of the nation's top 100 accounting and consulting firms with offices in Massachusetts, Maine, and New Hampshire.” Source: RevenueBase Database · checked Sep 23, 2026
3	The Partners Group	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	201-500	266 contacts →
	Partial evidence “At The Partners Group, we offer insurance, consulting, and financial services all in one place.” Source: RevenueBase Database · checked Sep 23, 2026
4	Geffen Mesher	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	51-200	160 contacts →
	Indirect evidence “We’re a Portland-based accounting firm with a 90+ year legacy, and we’re continuing to grow and evolve every day.” Source: RevenueBase Database · checked Sep 23, 2026
5	Propeller	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	51-200	137 contacts →
	Partial evidence “Propeller is a people-focused management consulting firm that focuses on one thing: accelerating transformation to help businesses succeed.” Source: RevenueBase Database · checked Sep 23, 2026
6	Albin Randall & Bennett	Indirect evidence	Portland, ME, United StatesHQ checked Sep 23, 2026	51-200	90 contacts →
	Indirect evidence “ARB guides organizations in the automotive, construction, manufacturing, and nonprofit sectors; closely held businesses; and family groups to make intelligent, sensible financial…” Source: RevenueBase Database · checked Sep 23, 2026
7	The Boutique COO	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	n/a	60 contacts →
	Indirect evidence “The Boutique COO offers strategic and tactical support for entrepreneurs, creatives, coaches, and businesses of all sizes by handling the tasks they’d rather not.” Source: RevenueBase Database · checked Sep 23, 2026
8	Percipio Consulting Group	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	50 contacts →
	Partial evidence “Growth grounded in Partnership Deeply rooted in the Pacific Northwest, Percipio Group is a Portland-based consulting firm that is sharply focused on a prosperous future for the…” Source: RevenueBase Database · checked Sep 23, 2026
9	Purdy Powers & Company	Indirect evidence	Portland, ME, United StatesHQ checked Sep 23, 2026	11-50	46 contacts →
	Indirect evidence “Confidence in Knowing.” Source: RevenueBase Database · checked Sep 23, 2026
10	Solid Ground Consulting IS NOW Metamorphic Consulting	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	32 contacts →
	Partial evidence “follow our new organization, Metamorphic Consulting!” Source: RevenueBase Database · checked Sep 23, 2026
11	Isler Northwest LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	25 contacts →
	Partial evidence “Isler Northwest LLC is a locally-owned firm of certified public accountants and business advisors.” Source: RevenueBase Database · checked Sep 23, 2026
12	Succession Resource Group	Strong evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	25 contacts →
	Strong evidence “Succession Resource Group is a boutique succession planning consulting firm dedicated to helping financial advisors and other small business owners value, grow, protect, and plan…” Source: RevenueBase Database · checked Sep 23, 2026
13	Pittman & Brooks, P.C	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	25 contacts →
	Indirect evidence “We started Pittman & Brooks because we believe that businesses need more than accountants, they need business consultants who are CPA-certified.” Source: RevenueBase Database · checked Sep 23, 2026
14	Opus Consulting	Strong evidence	Portland, ME, United StatesHQ checked Sep 23, 2026	11-50	21 contacts →
	Strong evidence “Opus Consulting is a full-service business advisory firm, that guides companies and their stakeholders across the entire lifecycle.” Source: RevenueBase Database · checked Sep 23, 2026
15	IDEBA	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	20 contacts →
	Partial evidence “Ideba is a customer-driven consulting firm combining the brightest minds to create actionable insights from experience.” Source: RevenueBase Database · checked Sep 23, 2026
16	Meriwether Group	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	20 contacts →
	Partial evidence “Meriwether Group (MWG) is a trusted advisor and business acceleration firm serving entrepreneurs of iconic, disruptive consumer brands.” Source: RevenueBase Database · checked Sep 23, 2026
17	Pepper Foster Consulting	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	51-200	19 contacts →
	Partial evidence “Pepper Foster Consulting is a strategic project consulting firm with offices in Atlanta, Minneapolis, and Portland, OR.” Source: RevenueBase Database · checked Sep 23, 2026
18	Tyee Carr Advisory	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	14 contacts →
	Partial evidence “CFO Advisory and Outsourced Accounting for Growth Oriented Businesses and Nonprofits.” Source: RevenueBase Database · checked Sep 23, 2026
19	Packman & Associates	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	9 contacts →
	Partial evidence “Packman & Associates is a management consulting and executive development firm dedicated to helping our clients achieve lasting trust and clarity in their organizations.” Source: RevenueBase Database · checked Sep 23, 2026
20	Productive Flourishing	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	6 contacts →
	Indirect evidence “We share strategies for thriving in life and business.” Source: RevenueBase Database · checked Sep 23, 2026
21	Verify Ventures	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	6 contacts →
	Indirect evidence “We are a bolt-on growth engine for ambitious brands, helping organizations at all stages establish and grow new sources of revenue, accelerate their core businesses, and build new…” Source: RevenueBase Database · checked Sep 23, 2026
22	Cobalt, P.C	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	6 contacts →
	Partial evidence “We're not just advisors - we're integral partners in our clients' businesses.” Source: RevenueBase Database · checked Sep 23, 2026
23	Spinglass Management Group, LLC	Partial evidence	Portland, ME, United StatesHQ checked Sep 23, 2026	11-50	6 contacts →
	Partial evidence “Spinglass Management Group, LLC is a leading regional business advisory firm made up of passionate professionals who focus on establishing relationships that create value.” Source: RevenueBase Database · checked Sep 23, 2026
24	Tm3	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	6 contacts →
	Indirect evidence “Hi, my name is Ted Miller I'm the CEO of Training Mastery 3 (TM3).” Source: RevenueBase Database · checked Sep 23, 2026
25	Thimbleberry Financial	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	5 contacts →
	Indirect evidence “Thimbleberry Financial is a boutique firm focused on providing clients with the advice and tools needed to reach their financial goals.” Source: RevenueBase Database · checked Sep 23, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: business advisory and consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names business advisory and consulting firms.
Partial evidence: Its own public description names part of business advisory and consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business advisory and consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 218 business advisory and consulting firms based in Portland, United States

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Business advisory and consulting firms based in Portland, United States at a glance

As of Sep 23, 2026

59.0%Verified-email coverage

9.7Average contacts per company

1-10Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

183

11-50

51-200

201-500

10001+

Email recency for this list is measured across the whole United States list rather than for Portland, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 218 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 business advisory and consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “business advisory and consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names business advisory and consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among business advisory and 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 its RevenueBase Smart Search 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, 1,252 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 23, 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.

Business advisory and consulting firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names business advisory and consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many business advisory and consulting firms are there based in Portland, United States?

RevenueBase identified 218 business advisory and 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?

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

Which city in the United States has the most business advisory and consulting firms?

New York leads the United States with 1,895 headquartered companies, followed by Atlanta (839) and Chicago (826). Portland has 218.

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 1,252 verified decision-maker contacts tracked across these 218 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 23, 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 Smart Search, 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.