Company lists · Data refreshed September 2026

Top 25 Civil infrastructure consulting firms based in Columbia, United States

Name: Civil infrastructure consulting firms based in Columbia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 50 companies tracked

RevenueBase identified 50 civil infrastructure consulting firms headquartered in Columbia, United States as of September 2026 and tracks 1,326 professional contacts across them, including 740 with verified work emails. Across the United States, Houston is the largest hub for this category (268 companies); Columbia has 50.

This list covers civil infrastructure consulting firms headquartered in Columbia, 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 28, 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 28, 2026 86% judged on-target in blind review

50Companies

1,326Contacts tracked

740Verified emails

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The 25 largest civil infrastructure consulting firms based in Columbia, United States

Ranked by team size

Top 25 of 50 civil infrastructure consulting firms based in Columbia, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to civil infrastructure 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	Emery Sapp & Sons, INC	Strong evidence	Columbia, MO, United StatesHQ checked Sep 28, 2026	1,001-5,000	531 contacts →
	Strong evidence “We are proud to be one of the Midwest’s leading heavy civil infrastructure contractors.” Source: RevenueBase Database · checked Sep 28, 2026
2	Alliance Consulting Engineers, INC	Strong evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	11-50	77 contacts →
	Strong evidence “Professional Civil and Environmental Engineering Firm providing Technical Consulting Services to County Governments, Municipalities, Industry, School Districts, Healthcare…” Source: RevenueBase Database · checked Sep 28, 2026
3	F&me Consultants, INC	Indirect evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	51-200	65 contacts →
	Indirect evidence “F & ME Consultants, Inc.(FME) is a locally owned and operated engineering firm headquartered in Columbia with a branch office in Beaufort.” Source: RevenueBase Database · checked Sep 28, 2026
4	Parrish And Partners, LLC	Indirect evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	51-200	57 contacts →
	Indirect evidence “Parrish and Partners, LLC (P&P) is a full-service engineering firm specializing in aviation, highway, and bridge programs.” Source: RevenueBase Database · checked Sep 28, 2026
5	Holt Consulting Company, LLC	Strong evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	11-50	55 contacts →
	Strong evidence “Holt Consulting Company is a multi-discipline engineering firm that provides planning, design, and management services for transportation infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
6	Brudis & Associates, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	46 contacts →
	Indirect evidence “Established in 1992, Brudis & Associates, Inc,(BAI) is a multi-discipline engineering, construction management and environmental firm built on trusted relationships to provide…” Source: RevenueBase Database · checked Sep 28, 2026
7	Ati, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	45 contacts →
	Indirect evidence “ATI provides AE design; environmental compliance and remediation; construction and facility/program management services.” Source: RevenueBase Database · checked Sep 28, 2026
8	Engineering Surveys & Services	Indirect evidence	Columbia, MO, United StatesHQ checked Sep 28, 2026	11-50	30 contacts →
	Indirect evidence “In 1954, Engineering Surveys & Services began offering professional services from a home office in Columbia, Missouri.” Source: RevenueBase Database · checked Sep 28, 2026
9	Allstate Consultants	Partial evidence	Columbia, MO, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Allstate Consultants LLC (Allstate) is a comprehensive civil engineering and surveying firm delivering innovative design solutions for public and private sector clients.” Source: RevenueBase Database · checked Sep 28, 2026
10	Chao & Associates	Partial evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Chao & Associates is a leading boutique civil and structural engineering firm in Columbia, SC.” Source: RevenueBase Database · checked Sep 28, 2026
11	Environ-Civil Engineering LTD	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Environ-Civil Engineering, Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
12	COX And Dinkins INC	Indirect evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	51-200	27 contacts →
	Indirect evidence “Founded in 1953 by Isaac B.” Source: RevenueBase Database · checked Sep 28, 2026
13	Dennis Corporation	Indirect evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	51-200	27 contacts →
	Indirect evidence “Dennis Corporation is a South Carolina licensed engineering, surveying, and construction management firm specializing in a broad range of services.” Source: RevenueBase Database · checked Sep 28, 2026
14	Dungan Engineering PA	Partial evidence	Columbia, MS, United StatesHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “At Dungan Engineering, our professional civil engineering services are built on more than 250 years of combined knowledge and experience.” Source: RevenueBase Database · checked Sep 28, 2026
15	KK Engineering LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	1-10	24 contacts →
	Indirect evidence “We have in-depth experience in HVAC, Electrical, and Plumbing; smoke management, and fire-protection systems design for institutional, commercial, and residential facilities.” Source: RevenueBase Database · checked Sep 28, 2026
16	Daniel Consultants, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “DCI is a full-service transportation engineering firm with the expertise to complete a multifaceted project from start to finish.” Source: RevenueBase Database · checked Sep 28, 2026
17	Suyash Consulting, LLC	Strong evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	18 contacts →
	Strong evidence “SuYash Consulting LLC.(SUYASH) is a small Minority Business Enterprise providing reliable, high-quality, multi-disciplinary civil and environmental engineering consulting and…” Source: RevenueBase Database · checked Sep 28, 2026
18	Tora Consulting, LLC	Partial evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Tora Consulting is now part of ALL4.” Source: RevenueBase Database · checked Sep 28, 2026
19	Columbia Engineering, INC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Columbia Engineering, Inc, a structural consulting firm located in Columbia, Maryland, provides design and consulting services for new and existing structures, condition surveys…” Source: RevenueBase Database · checked Sep 28, 2026
20	Carlisle Associates INC	Indirect evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
21	A Civil Group	Indirect evidence	Columbia, MO, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Project planning for: Site plans, Commercial Developments, Residential Subdivisions, Rezoning Surveying services such as: Preliminary plats, Final plats, Topographic surveys…” Source: RevenueBase Database · checked Sep 28, 2026
22	Transtech Engineering Consultants, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	11 contacts →
	Indirect evidence “Transtech Engineering Consultants, Inc.(TEC) is a multi-disciplinary engineering firm located in Columbia, Maryland.” Source: RevenueBase Database · checked Sep 28, 2026
23	Sabra & Associates, Inc., A Mead & Hunt Company	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	11 contacts →
	Indirect evidence “Sabra & Associates joined Mead & Hunt in August 2019.” Source: RevenueBase Database · checked Sep 28, 2026
24	Anthony Management Group	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “The Anthony Management Group LLC is SBA 8(a) Certified and a Service Disabled Veteran Owned Small Business that provides management consulting and related services in support of…” Source: RevenueBase Database · checked Sep 28, 2026
25	Hardy Holding Group	Strong evidence	Columbia, MO, United StatesHQ checked Sep 28, 2026	11-50	9 contacts →
	Strong evidence “We are an industry leader in infrastructure and heavy-civil construction.” Source: RevenueBase Database · checked Sep 28, 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: civil infrastructure 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 civil infrastructure consulting firms.
Partial evidence: Its own public description names part of civil infrastructure consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name civil infrastructure 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 50 civil infrastructure consulting firms based in Columbia, United States

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Civil infrastructure consulting firms based in Columbia, United States at a glance

As of Sep 28, 2026

55.8%Verified-email coverage

26.5Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Columbia, so it is reported there. Company counts and contact totals on this page are exact for Columbia, over 50 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 civil infrastructure 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 Columbia, United States whose own description of what they do matches “civil infrastructure 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 civil infrastructure 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 civil infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Columbia 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, 740 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 28, 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.

Civil infrastructure 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 civil infrastructure 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 civil infrastructure consulting firms are there based in Columbia, United States?

RevenueBase identified 50 civil infrastructure consulting firms headquartered in Columbia, 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?

Emery Sapp & Sons, INC, headquartered in Columbia, tops this list with the largest team on record.

Which city in the United States has the most civil infrastructure consulting firms?

Houston leads the United States with 268 headquartered companies, followed by New York (206) and Austin (122). Columbia has 50.

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 740 verified decision-maker contacts tracked across these 50 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 28, 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.