Company lists · Data refreshed October 2026

Top 25 Infrastructure design consultancies based in Houston, United States

Name: Infrastructure design consultancies based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 242 companies tracked

RevenueBase identified 242 company matches for infrastructure design consultancies associated with Houston, United States as of October 2026 and tracks 15,268 professional contacts across them, including 7,222 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for infrastructure design consultancies associated with Houston, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 1, 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 RevenueBase SmartSearch · Exact Recorded Oct 1, 2026 How this list was built

242Companies

15,268Contacts tracked

7,222Verified emails

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The 25 largest infrastructure design consultancies based in Houston, United States

Ranked by team size

Top 25 of 242 company matches for infrastructure design consultancies based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	LJA	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,932 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Walter P Moore	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,298 contacts →
	Exact match “Welcome to Walter P Moore!” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	Bge, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,112 contacts →
	Exact match “Ranked No.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	PBK	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	1,001-5,000	892 contacts →
	Exact match “PBK is an award-winning architecture, engineering and consulting practice that has been a leader in design solutions for education, healthcare, corporate, government and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	KBR Energo Engineering	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	n/a	789 contacts →
	Exact match “Energo Engineering is a KBR Company that provides the full package of structural integrity management (SIM) and advanced structural engineering services for offshore floating and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	Quiddity	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	501-1,000	683 contacts →
	Exact match “Quiddity is an award-winning, full-service civil engineering, planning, surveying, and consulting firm providing innovative solutions for public infrastructure and private…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Cobb, Fendley & Associates, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	501-1,000	524 contacts →
	Exact match “Cobb, Fendley & Associates, Inc.(CobbFendley) is a nationally recognized infrastructure solutions firm with a regional focus and a commitment to excellence.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Lockwood, Andrews & Newnam, Inc. LAN	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	201-500	461 contacts →
	Exact match “Lockwood, Andrews & Newnam, Inc.(LAN) is a full-service consulting firm offering planning, engineering and program management services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	PGAL	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	201-500	312 contacts →
	Exact match “Founded in 1946, PGAL is a design firm specializing in architecture, engineering, interiors, and planning for a diverse portfolio of public and private sector clients.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Tolunay-Wong Engineers, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	201-500	260 contacts →
	Exact match “Founded in 1993, Tolunay-Wong Engineers, Inc.(TWE) is ranked as one of the Top 10 largest civil engineering firms in Houston.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Office Of The County Engineer	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	501-1,000	248 contacts →
	Exact match “Office of the County Engineer is a regional leader in providing wholly integrated professional services to a broad range of clients.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Ehra Engineering	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	201-500	247 contacts →
	Exact match “EHRA Engineering is a civil engineering, surveying, low impact developing, land planning, construction phase services, traffic, emergency management and landscape architecture…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	HVJ Associates	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	199 contacts →
	Exact match “Completing public infrastructure projects comes with tremendous pressure to serve the public while completing each project on-time and on-budget.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	IDS Engineering Group	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	182 contacts →
	Exact match “Founded in 1970, IDS Engineering Group is a Houston-based civil engineering and surveying firm with over five decades of experience delivering infrastructure solutions for public…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	Zentech Incorporated	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	181 contacts →
	Exact match “Zentech, Inc, an engineering consulting and software development company, headquartered in Houston, TX, is comprised of experienced professionals specializing in providing…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Elevation Land Solutions	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	147 contacts →
	Exact match “Elevation Land Solutions helps developers and builders create successful places.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	Shah Smith & Associates, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	134 contacts →
	Exact match “Shah Smith & Associates, Inc.(SSA) is a 120+ employee Mechanical, Electrical, and Plumbing (MEP) consulting engineering firm with offices in Houston, Austin & Dallas.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Dec, NOW GFT	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	1,001-5,000	128 contacts →
	Exact match “Gannett Fleming is a privately held AEC firm partnering closely with our clients on some of the toughest challenges facing our communities today-and into the future.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	Othon, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	125 contacts →
	Exact match “OTHON is a multi-discipline civil engineering firm.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	DCCM	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	501-1,000	123 contacts →
	Exact match “DCCM provides design, consulting, and construction management services focused on infrastructure markets across the United States.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	S&b Infrastructure, LTD	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	97 contacts →
	Exact match “S&B Infrastructure, Ltd.(S & BI) has been in existence since 1994 as part of S&B Holdings, Ltd,(one of the largest privately-owned engineering firms in the State of Texas).” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Omega Engineers, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	79 contacts →
	Exact match “Founded in 1984, OMEGA is an engineering and construction management firm specializing in infrastructure, civil engineering, highway engineering, transportation planning, railway…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	A&s Engineers, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	79 contacts →
	Exact match “The objective of A&S is to provide municipal engineering services, with focus on water districts, municipalities, and land development.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	Sowells Consulting Engineers SCE	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	11-50	66 contacts →
	Exact match “Sowells Consulting Engineers (SCE), established in 2010, is a professional services consulting firm specializing in leading project teams and providing quality control during the…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	Civitas Engineering Group, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	51-200	65 contacts →
	Exact match “Civitas Engineering Group Inc.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “infrastructure design consultancies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 242 infrastructure design consultancies based in Houston, United States

See the full list, filter by size, metro and specialty, and access 7,222 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Infrastructure design consultancies based in Houston, United States at a glance

As of Oct 1, 2026

47.3%Verified-email coverage

63.1Average contacts per company

11-50Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

101

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 242 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Houston, United States whose business descriptions match “infrastructure design consultancies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,222 professional contacts with verified work emails across the full matched dataset. 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 October 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Infrastructure design consultancies by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “infrastructure design consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many infrastructure design consultancies are there based in Houston, United States?

RevenueBase identified 242 company matches for infrastructure design consultancies associated with Houston, United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

LJA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most infrastructure design consultancies?

Houston leads the United States with 242 company records, followed by New York (233) and Chicago (126).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,222 professional contacts with verified work emails tracked across these 242 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 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.