Company lists · Data refreshed September 2026

Top 25 Engineering surveying companies based in the United States

Name: Engineering surveying companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 5,294 companies tracked

RevenueBase identified 5,294 engineering surveying companies headquartered in the United States as of September 2026 and tracks 114,464 professional contacts across them, including 54,823 with verified work emails. Houston is the largest hub.

This list covers engineering surveying companies headquartered in the 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 16, 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 16, 2026 86% judged on-target in blind review

5,294Companies

114,464Contacts tracked

54,823Verified emails

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The 25 largest engineering surveying companies based in the United States

Ranked by team size

Top 25 of 5,294 engineering surveying companies based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to engineering surveying companies: 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	Terracon	Partial evidence	Olathe, KS, United StatesHQ checked Sep 16, 2026	5,001-10,000	6,113 contacts →
	Partial evidence “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Source: RevenueBase Database · checked Sep 16, 2026
2	ECS Group Of Companies	Partial evidence	Chantilly, VA, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,210 contacts →
	Partial evidence “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Source: RevenueBase Database · checked Sep 16, 2026
3	Bowman Consulting	Partial evidence	Reston, VA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,666 contacts →
	Partial evidence “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Source: RevenueBase Database · checked Sep 16, 2026
4	Bge, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,112 contacts →
	Indirect evidence “Ranked No.” Source: RevenueBase Database · checked Sep 16, 2026
5	Timmons Group	Strong evidence	Richmond, VA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,066 contacts →
	Strong evidence “Timmons Group is an engineering & technology firm specializing in civil, environmental, GIS, and surveying services to clients across the US.” Source: RevenueBase Database · checked Sep 16, 2026
6	Coffman Engineers	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 16, 2026	501-1,000	859 contacts →
	Indirect evidence “The right team is more than an advantage.” Source: RevenueBase Database · checked Sep 16, 2026
7	Mckim & Creed, INC	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 16, 2026	501-1,000	759 contacts →
	Indirect evidence “What if you had the opportunity to do something you love and make a difference in peoples' lives at the same time?” Source: RevenueBase Database · checked Sep 16, 2026
8	Tower Engineering Professionals	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	707 contacts →
	Indirect evidence “Tower Engineer Professionals was founded in 1997 by two tower-climbing engineers.” Source: RevenueBase Database · checked Sep 16, 2026
9	Quiddity	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	501-1,000	683 contacts →
	Strong evidence “Quiddity is an award-winning, full-service civil engineering, planning, surveying, and consulting firm providing innovative solutions for public infrastructure and private…” Source: RevenueBase Database · checked Sep 16, 2026
10	Farnsworth Group, INC	Indirect evidence	Normal, IL, United StatesHQ checked Sep 16, 2026	501-1,000	654 contacts →
	Indirect evidence “Farnsworth Group is a leading employee-owned full-service design firm, with 650-plus professionals across the United States.” Source: RevenueBase Database · checked Sep 16, 2026
11	Neel-Schaffer, INC	Partial evidence	Jackson, MS, United StatesHQ checked Sep 16, 2026	501-1,000	591 contacts →
	Partial evidence “Neel-Schaffer is a multi-disciplined engineering, planning and construction management firm that was founded in 1983 and today is one of the largest private, employee-owned…” Source: RevenueBase Database · checked Sep 16, 2026
12	Raba Kistner, INC	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 16, 2026	501-1,000	582 contacts →
	Indirect evidence “Founded in 1968, Raba Kistner Inc.” Source: RevenueBase Database · checked Sep 16, 2026
13	DRMP	Strong evidence	Orlando, FL, United StatesHQ checked Sep 16, 2026	501-1,000	567 contacts →
	Strong evidence “Founded in 1977, DRMP is a multi-discipline civil engineering and surveying firm that develops innovative and sustainable design solutions for infrastructure in the public…” Source: RevenueBase Database · checked Sep 16, 2026
14	BL Companies	Indirect evidence	Meriden, CT, United StatesHQ checked Sep 16, 2026	201-500	550 contacts →
	Indirect evidence “BL Companies is committed to providing quality, individualized service to clients.” Source: RevenueBase Database · checked Sep 16, 2026
15	DOWL	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 16, 2026	501-1,000	547 contacts →
	Indirect evidence “For more than 60 years, it has been the quality of our people that defines the DOWL difference.” Source: RevenueBase Database · checked Sep 16, 2026
16	Nova Engineering And Environmental, LLC	Partial evidence	Kennesaw, GA, United StatesHQ checked Sep 16, 2026	501-1,000	518 contacts →
	Partial evidence “Established in 1996, NOVA was originally founded to provide Environmental Consulting, Geotechnical Engineering, and Construction Materials Testing and Inspection services to the…” Source: RevenueBase Database · checked Sep 16, 2026
17	KSA	Strong evidence	Longview, TX, United StatesHQ checked Sep 16, 2026	51-200	508 contacts →
	Strong evidence “We Build People Who Build the Future KSA is an industry leader, providing a broad range of engineering, architecture, planning, surveying, and construction management services.” Source: RevenueBase Database · checked Sep 16, 2026
18	Thomas & Hutton	Partial evidence	Savannah, GA, United StatesHQ checked Sep 16, 2026	501-1,000	491 contacts →
	Partial evidence “Our story began in 1946 with the collaboration of former US Army Corps of Engineers Officers, Hue Thomas and Joe Hutton, in their start-up engineering firm in Savannah, GA.” Source: RevenueBase Database · checked Sep 16, 2026
19	AI Engineers, INC	Indirect evidence	Middletown, CT, United StatesHQ checked Sep 16, 2026	201-500	491 contacts →
	Indirect evidence “Founded in 1991, AI Engineers provides comprehensive Bridge, Transportation, Construction Support, Water/Wastewater, Site/Civil, Building Systems, Design-Build, Survey/Mapping…” Source: RevenueBase Database · checked Sep 16, 2026
20	Mark Thomas	Strong evidence	San Jose, CA, United StatesHQ checked Sep 16, 2026	501-1,000	489 contacts →
	Strong evidence “Mark Thomas provides planning, civil and structural engineering, construction management, land surveying, landscape architecture and urban design, and district management for…” Source: RevenueBase Database · checked Sep 16, 2026
21	Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C	Indirect evidence	Mountainville, United StatesHQ checked Sep 16, 2026	501-1,000	487 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
22	Ayres Associates	Indirect evidence	Eau Claire, WI, United StatesHQ checked Sep 16, 2026	201-500	458 contacts →
	Indirect evidence “In 1959, Owen Ayres founded Ayres Associates atop a steadfast foundation of honesty, innovation, and good old-fashioned hard work – and a vision for a firm that revolved around…” Source: RevenueBase Database · checked Sep 16, 2026
23	Ttl, INC	Partial evidence	Tuscaloosa, AL, United StatesHQ checked Sep 16, 2026	201-500	442 contacts →
	Partial evidence “Founded in 1964, TTL is an engineering design firm focused on delivering integrated infrastructure solutions for public and private clients.” Source: RevenueBase Database · checked Sep 16, 2026
24	Remington & Vernick Engineers	Indirect evidence	Cherry Hill, NJ, United StatesHQ checked Sep 16, 2026	501-1,000	438 contacts →
	Indirect evidence “Founded in 1901, RVE has grown to be an industry leader with 500 team members in offices throughout New Jersey, Pennsylvania, Delaware, Maryland and North Carolina.” Source: RevenueBase Database · checked Sep 16, 2026
25	Collins Engineers, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	201-500	432 contacts →
	Indirect evidence “In 1979, Collins Engineers, Inc.” Source: RevenueBase Database · checked Sep 16, 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: engineering surveying companies. 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 engineering surveying companies.
Partial evidence: Its own public description names part of engineering surveying companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering surveying companies. 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 5,294 engineering surveying companies based in the United States

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Engineering surveying companies based in the United States at a glance

As of Sep 16, 2026

47.9%Verified-email coverage

21.6Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

2,368

11-50

2,123

51-200

652

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 5,294 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 engineering surveying companies, 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 the United States whose own description of what they do matches “engineering surveying companies”. 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 engineering surveying companies), 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 engineering surveying companies, and records with no verified work email. Companies headquartered outside United States 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, 54,823 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 16, 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.

Engineering surveying companies by metro

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 engineering surveying companies, 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 engineering surveying companies are there based in the United States?

RevenueBase identified 5,294 engineering surveying companies headquartered in the 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?

Terracon, headquartered in Olathe, tops this list with the largest team on record.

Which city has the most engineering surveying companies?

Houston leads with 89 headquartered companies, followed by New York (48) and Tampa (45).

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 54,823 verified decision-maker contacts tracked across these 5,294 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 16, 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.