Company lists · Data refreshed September 2026

Top 25 Structural engineering companies based in Philadelphia, United States

Name: Structural engineering companies based in Philadelphia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 36 companies tracked

RevenueBase identified 36 structural engineering companies headquartered in Philadelphia, United States as of September 2026 and tracks 4,651 professional contacts across them, including 2,084 with verified work emails. Across the United States, New York is the largest hub for this category (270 companies); Philadelphia has 36.

This list covers structural engineering companies headquartered in Philadelphia, 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 6, 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 6, 2026 86% judged on-target in blind review

36Companies

4,651Contacts tracked

2,084Verified emails

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The 25 largest structural engineering companies based in Philadelphia, United States

Ranked by team size

Top 25 of 36 structural engineering companies based in Philadelphia, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to structural engineering 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	Yates Construction	Indirect evidence	Philadelphia, MS, United StatesHQ checked Sep 6, 2026	5,001-10,000	1,713 contacts →
	Indirect evidence “Yates Construction is part of The Yates Companies, Inc.” Source: RevenueBase Database · checked Sep 6, 2026
2	Pennoni	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,264 contacts →
	Indirect evidence “Since our founding more than five decades ago, our clients trust Pennoni’s commitment to elevating the impact of projects on our communities.” Source: RevenueBase Database · checked Sep 6, 2026
3	Urban Engineers	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	201-500	444 contacts →
	Partial evidence “Urban Engineers is an employee-owned, multidisciplinary firm specializing in planning, engineering design, environmental, and construction services.” Source: RevenueBase Database · checked Sep 6, 2026
4	Mccormick Taylor, INC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	201-500	434 contacts →
	Partial evidence “McCormick Taylor is a full-service civil engineering firm providing creative design, planning, and environmental solutions to the challenges of everyday life.” Source: RevenueBase Database · checked Sep 6, 2026
5	Burns Engineering, INC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	201-500	401 contacts →
	Partial evidence “Burns is a nationally respected provider of specialized engineering services, bringing highly-technical, sought-after engineering expertise to transportation, critical…” Source: RevenueBase Database · checked Sep 6, 2026
6	O'donnell & Naccarato	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	51-200	103 contacts →
	Strong evidence “O’Donnell & Naccarato’s structural engineering practice has grown from a 3-person company in 1981 into a national firm of over 120 people spread over ten offices.” Source: RevenueBase Database · checked Sep 6, 2026
7	Rodriguez	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	80 contacts →
	Indirect evidence “Rodriguez Consulting is a Philadelphia-based infrastructure firm helping build and maintain the systems that cities depend on.” Source: RevenueBase Database · checked Sep 6, 2026
8	Dedc, LLC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	51-200	52 contacts →
	Partial evidence “DEDC is a privately owned, full service multi disciplined engineering and design firm.” Source: RevenueBase Database · checked Sep 6, 2026
9	Keast & Hood	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	41 contacts →
	Strong evidence “Keast & Hood is a WBE/WOSB structural engineering firm founded in 1953 and located in Philadelphia, PA.” Source: RevenueBase Database · checked Sep 6, 2026
10	Joseph B. Callaghan, INC	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	22 contacts →
	Strong evidence “JBCI is a structural engineering firm based in Philadelphia.” Source: RevenueBase Database · checked Sep 6, 2026
11	Larsen & Landis, INC	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	12 contacts →
	Strong evidence “Larsen & Landis is a structural engineering firm offering services to architects, to other professionals in development, design, and construction, and to building owners.” Source: RevenueBase Database · checked Sep 6, 2026
12	Leake Engineering LLC	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	11 contacts →
	Strong evidence “Leake Engineering is a dynamic structural and civil engineering firm based in Philadelphia, PA, with a nationwide footprint.” Source: RevenueBase Database · checked Sep 6, 2026
13	Dimitri J. Ververelli, INC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	8 contacts →
	Indirect evidence “For over 60 years, Dimitri J.” Source: RevenueBase Database · checked Sep 6, 2026
14	Zimmerman Studio, LLC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	1-10	8 contacts →
	Indirect evidence “Zimmerman Studio, LLC is an architectural firm located in Philadelphia which specializes in small to mid-range size projects for educational, healthcare, civic and transportation…” Source: RevenueBase Database · checked Sep 6, 2026
15	The Ramtin Group	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	6 contacts →
	Strong evidence “A forward thinking and technical civil - structural - construction engineering consulting firm laser focused on our clients' and employees' success stories.” Source: RevenueBase Database · checked Sep 6, 2026
16	Studio Agoos Lovera	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	6 contacts →
	Indirect evidence “Firm History Studio Agoos Lovera began when founding partners Jorge Lovera and Ted Agoos established Agoos/Lovera Architects (A/LA) in September 1983, after several years of…” Source: RevenueBase Database · checked Sep 6, 2026
17	Ruggiero Plante Land Design LLC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	6 contacts →
	Indirect evidence “Ruggiero Plante Land Design LLC is a company based out of United States.” Source: RevenueBase Database · checked Sep 6, 2026
18	Varano Tovinsky LLC	Strong evidence	Philadelphia, United StatesHQ checked Sep 6, 2026	1-10	5 contacts →
	Strong evidence “Established in 2022, Varano Tovinsky is a consulting structural engineering firm located just outside of Philadelphia.” Source: RevenueBase Database · checked Sep 6, 2026
19	Hutec Enginneering	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	1-10	4 contacts →
	Partial evidence “Hutec Engineering Inc.” Source: RevenueBase Database · checked Sep 6, 2026
20	Unitas Engineering	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	1-10	3 contacts →
	Partial evidence “With a combination of engineering knowledge, building development experience, and business acumen, Unitas brings an unparalleled combination of skills that will serve as a…” Source: RevenueBase Database · checked Sep 6, 2026
21	Level Nine Architects	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	1-10	2 contacts →
	Indirect evidence “Level Nine Architects (Level 9), is a distinguished Philadelphia-based firm specializing in a comprehensive range of architectural services.” Source: RevenueBase Database · checked Sep 6, 2026
22	Tantala Associates, LLC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	11-50	1 contacts →
	Partial evidence “TANTALA ASSOCIATES, LLC is a multi-disciplined, professional, consulting-engineering firm established in 1966.” Source: RevenueBase Database · checked Sep 6, 2026
23	Bevan Lawson	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 6, 2026
24	Bhaumik Engineering LLC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 6, 2026
25	24 7 Design Group, LLC	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	1-10	1 contacts →
	Indirect evidence “24/7 Design Group is a Philadelphia-based firm that provides architectural services and solutions to all our clients’ needs.” Source: RevenueBase Database · checked Sep 6, 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: structural engineering 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 structural engineering companies.
Partial evidence: Its own public description names part of structural engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name structural engineering 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 36 structural engineering companies based in Philadelphia, United States

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Structural engineering companies based in Philadelphia, United States at a glance

As of Sep 6, 2026

44.8%Verified-email coverage

129.2Average contacts per company

11-50Median size (employees)

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Philadelphia, so it is reported there. Company counts and contact totals on this page are exact for Philadelphia, over 36 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 structural engineering 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 Philadelphia, United States whose own description of what they do matches “structural engineering 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 structural engineering 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 structural engineering companies, and records with no verified work email. Companies headquartered outside Philadelphia 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, 2,084 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 6, 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.

Structural engineering companies 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 structural engineering 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 structural engineering companies are there based in Philadelphia, United States?

RevenueBase identified 36 structural engineering companies headquartered in Philadelphia, 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?

Yates Construction, headquartered in Philadelphia, tops this list with the largest team on record.

Which city in the United States has the most structural engineering companies?

New York leads the United States with 270 headquartered companies, followed by Houston (227) and Chicago (122). Philadelphia has 36.

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 2,084 verified decision-maker contacts tracked across these 36 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 6, 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.