Company lists · Data refreshed September 2026

Top 25 Building consulting firms based in Portland, United States

Name: Building 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 98 companies tracked

RevenueBase identified 98 building consulting firms headquartered in Portland, United States as of September 2026 and tracks 660 professional contacts across them, including 251 with verified work emails. Across the United States, New York is the largest hub for this category (579 companies); Portland has 98.

This list covers building 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

98Companies

660Contacts tracked

251Verified emails

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The 25 largest building consulting firms based in Portland, United States

Ranked by team size

Top 25 of 98 building 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 building 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	Allied Engineering	Indirect evidence	Portland, ME, United StatesHQ checked Sep 23, 2026	11-50	135 contacts →
	Indirect evidence “Allied Engineering (AEI) is now Salas O'Brien.” Source: RevenueBase Database · checked Sep 23, 2026
2	Norwest Engineering INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	51-200	41 contacts →
	Partial evidence “Norwest Engineering is a multi-disciplined, consulting engineering firm focused on developing long-standing relationships with our clients.” Source: RevenueBase Database · checked Sep 23, 2026
3	Froelich Engineers	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	30 contacts →
	Indirect evidence “Since 1983, Froelich Engineers has been delivering on-time, on-budget engineering services to leading owners, contractors, engineers, and developers across the country.” Source: RevenueBase Database · checked Sep 23, 2026
4	Peterson Structural Engineers, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	29 contacts →
	Indirect evidence “In 2026, PSE was acquired by Consor, a leading North American engineering and advisory firm.” Source: RevenueBase Database · checked Sep 23, 2026
5	Klosh Group, INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	21 contacts →
	Partial evidence “Klosh Group is a consulting firm specializing in owner's representation, pre-construction planning, project management, and construction management services.” Source: RevenueBase Database · checked Sep 23, 2026
6	Cascadia Partners	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	20 contacts →
	Indirect evidence “Cascadia Partners are a multi-disciplinary team with decades of experience in planning, design, development finance, sustainability, project management, and community engagement.” Source: RevenueBase Database · checked Sep 23, 2026
7	SFA Design Group, LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	16 contacts →
	Partial evidence “SFA Design Group, LLC is a structural engineering consulting company based out of Portland, Oregon, United States.” Source: RevenueBase Database · checked Sep 23, 2026
8	Alliedcook Construction	Indirect evidence	Portland, ME, United StatesHQ checked Sep 23, 2026	11-50	15 contacts →
	Indirect evidence “Since 1958, AlliedCook Construction has provided construction management and design-build services to a diverse range of clients, earning the reputation as one of the premier…” Source: RevenueBase Database · checked Sep 23, 2026
9	Vista Structural Engineering, LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	14 contacts →
	Indirect evidence “Vista Structural Engineering can help you complete any of the following projects: New Construction (Residential, Light Commercial) Addition to Existing Construction (Residential…” Source: RevenueBase Database · checked Sep 23, 2026
10	Robert Evans Company	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	13 contacts →
	Indirect evidence “Robert Evans Company is a construction management company specializing in commercial construction of industrial, office, medical and dental projects.” Source: RevenueBase Database · checked Sep 23, 2026
11	Urban Resources, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	13 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
12	Norwest Contractors	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	12 contacts →
	Indirect evidence “We start with smart.” Source: RevenueBase Database · checked Sep 23, 2026
13	Axis Design Group Architecture & Engineering, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	10 contacts →
	Indirect evidence “Axis Design Group is a professional architecture firm located in Portland, Oregon.” Source: RevenueBase Database · checked Sep 23, 2026
14	Stonewood Structural Engineers	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	10 contacts →
	Indirect evidence “At Stonewood Structural Engineers, we serve as either prime consultant or sub consultant on projects large and small, including commercial, retail, institutional, government and…” Source: RevenueBase Database · checked Sep 23, 2026
15	System Design Consultants, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	9 contacts →
	Indirect evidence “System Design Consultants, Inc.(SDC), is celebrating 35 years in the Portland design community, providing mechanical and electrical engineering services for commercial and…” Source: RevenueBase Database · checked Sep 23, 2026
16	Allstructure Engineering, LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	8 contacts →
	Partial evidence “Allstructure Engineering, LLC is a full service consulting Structural Engineering firm established in 2005.” Source: RevenueBase Database · checked Sep 23, 2026
17	T&m Design, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
18	Octopus Restoration And Remodeling LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	8 contacts →
	Indirect evidence “At OPM, we are committed to delivering high-quality Advisory and construction services that exceed our clients' expectations.” Source: RevenueBase Database · checked Sep 23, 2026
19	DON Tankersley & CO	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
20	Livermore Architecture & Engineering, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	7 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 23, 2026
21	Base Design Group, INC	Strong evidence	Portland, ME, United StatesHQ checked Sep 23, 2026	11-50	7 contacts →
	Strong evidence “BASE DESIGN GROUP is a full-service structural engineering consulting firm providing design, analysis and evaluation of buildings and special structures throughout the northeast…” Source: RevenueBase Database · checked Sep 23, 2026
22	Twin Peaks Construction, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	7 contacts →
	Indirect evidence “OR CCB#:243170 We're a team of experienced construction professionals who tailor our services to suit our customers specific needs.” Source: RevenueBase Database · checked Sep 23, 2026
23	Arris Consulting	Partial evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	1-10	6 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 23, 2026
24	Fleschner Construction, LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	6 contacts →
	Indirect evidence “Since 2007, Fleschner Construction has proudly served the Portland metro area with residential and commercial construction services rooted in collaboration, craftsmanship, and…” Source: RevenueBase Database · checked Sep 23, 2026
25	MCA Architects, PC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 23, 2026	11-50	5 contacts →
	Indirect evidence “Since its establishment in 1974, MCA Architects has earned a reputation for consistent delivery of outstanding design, on time and within budget.” 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: building 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 building consulting firms.
Partial evidence: Its own public description names part of building consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name building 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 98 building consulting firms based in Portland, United States

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

As of Sep 23, 2026

38.0%Verified-email coverage

6.7Average contacts per company

1-10Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 98 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 building 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 “building 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 building 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 building 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, 251 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.

Building 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 building 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 building consulting firms are there based in Portland, United States?

RevenueBase identified 98 building 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?

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

Which city in the United States has the most building consulting firms?

New York leads the United States with 579 headquartered companies, followed by Houston (299) and Chicago (211). Portland has 98.

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 251 verified decision-maker contacts tracked across these 98 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.