Company lists · Data refreshed September 2026

Top 25 Construction administration firms based in Los Angeles, United States

Name: Construction administration firms based in Los Angeles, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 75 companies tracked

RevenueBase identified 75 construction administration firms headquartered in Los Angeles, United States as of September 2026 and tracks 628 professional contacts across them, including 131 with verified work emails. New York is the largest hub.

This list covers construction administration firms headquartered in Los Angeles, 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

75Companies

628Contacts tracked

131Verified emails

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The 25 largest construction administration firms based in Los Angeles, United States

Ranked by team size

Top 25 of 75 construction administration firms based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to construction administration 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	PCM	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	n/a	211 contacts →
	Partial evidence “Commercial Construction, CM/PM Services, General Contractor,” Source: RevenueBase Database · checked Sep 16, 2026
2	DCM	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	n/a	64 contacts →
	Indirect evidence “Architecture and Design Our Office is led by 3 partners Jeff Dotterweich, Cynthia Carlson and Tiemo Mehner.” Source: RevenueBase Database · checked Sep 16, 2026
3	Phoenix Construction & Management - PCM	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	34 contacts →
	Partial evidence “We are Phoenix Construction & Management (PCM).” Source: RevenueBase Database · checked Sep 16, 2026
4	Lenax Construction Services, INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	51-200	29 contacts →
	Partial evidence “Since its inception in 1993, Lenax Construction Services, Inc.(LENAX) has provided quality construction management consulting services to a diverse range of engineering, design…” Source: RevenueBase Database · checked Sep 16, 2026
5	SPF Architects SPF A	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	17 contacts →
	Indirect evidence “Founded in 1988, SPF:a is a Los Angeles-based architecture firm specializing in clients and projects that require a high level of design sensitivity, technical expertise, and…” Source: RevenueBase Database · checked Sep 16, 2026
6	The Tsui Group	Partial evidence	Los Angeles, United StatesHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “PMCM firm focused on Program Management & Construction Management professional services.” Source: RevenueBase Database · checked Sep 16, 2026
7	C2pm	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	14 contacts →
	Partial evidence “C2PM stands at the forefront of the construction consulting landscape, offering a full spectrum of program management, construction management, and specialized engineering…” Source: RevenueBase Database · checked Sep 16, 2026
8	Mobbil INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	11 contacts →
	Partial evidence “Providing construction and consulting services.” Source: RevenueBase Database · checked Sep 16, 2026
9	DK Engineer, Corp	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	9 contacts →
	Strong evidence “DK Engineer, Corp (DKE) is a boutique civil engineering consulting firm that provides design and construction administration services for construction projects throughout Southern…” Source: RevenueBase Database · checked Sep 16, 2026
10	Peter T. Erdelyi & Assoc. Inc.	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	9 contacts →
	Indirect evidence “Whether you're upgrading an existing structure or building from the ground up, Peter T.” Source: RevenueBase Database · checked Sep 16, 2026
11	SG Engineering Solutions	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	8 contacts →
	Partial evidence “SG Engineering has been providing professional construction management via an array of services applied to construction projects and programs through the planning, design…” Source: RevenueBase Database · checked Sep 16, 2026
12	Clmi Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	8 contacts →
	Partial evidence “CLMI Group is a Southern California Construction Management / Project Management firm providing estimating, scheduling, and support services.” Source: RevenueBase Database · checked Sep 16, 2026
13	Goldenline Construction	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	7 contacts →
	Indirect evidence “We aim to improve business by delivering effective solutions based on innovative technologies and clean designs.” Source: RevenueBase Database · checked Sep 16, 2026
14	Steiner Construction	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
15	Riley Projects	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	6 contacts →
	Partial evidence “Riley Projects is a vertically integrated architecture and construction firm committed to helping you live the good life - by creating spaces that benefit you, benefit your…” Source: RevenueBase Database · checked Sep 16, 2026
16	HOA Construction Consulting	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “As your Construction Manager and Project Manager, we will evaluate, plan, and help you complete your capital improvement project.” Source: RevenueBase Database · checked Sep 16, 2026
17	Steiner Consulting INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	5 contacts →
	Indirect evidence “Steiner Consulting, Inc.(SCI) is a heavy civil-engineering consulting firm specializing in driving Southern California infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
18	K&m Engineering & Design, Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	5 contacts →
	Indirect evidence “Based in Southern California, K&M Engineering & Design, Corp.(Formerly OKS’N Associates, INC.” Source: RevenueBase Database · checked Sep 16, 2026
19	Dobkin Construction	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	5 contacts →
	Partial evidence “Dobkin Construction is a Los Angeles-based company specializing in custom residential and commercial builds.” Source: RevenueBase Database · checked Sep 16, 2026
20	Shain Development, INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	11-50	5 contacts →
	Partial evidence “Welcome to Shain Development, Inc, a full service general contracting firm specializing in luxury home development, including new construction, remodels, and restorations.” Source: RevenueBase Database · checked Sep 16, 2026
21	JSM Project Management	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Strong evidence “JSM Project Management is a full-service Construction Management firm providing services to enhance the management and administrative practices of your construction project.” Source: RevenueBase Database · checked Sep 16, 2026
22	DSN Group INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “DSN Group, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
23	Gerami Architectural Corporation	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Partial evidence “We are a team of professional Architects, Engineers, and Designers with more than 20 years of experience in residential/commercial architecture and construction.” Source: RevenueBase Database · checked Sep 16, 2026
24	Maskan Construction Services LLC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “A Preconstruction Consulting Firm, Specializing in Cost Analysis, Feasibility Studies, Value Engineering, Claims analysis and Design Build Process.” Source: RevenueBase Database · checked Sep 16, 2026
25	Dannon Rampton	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Partial evidence “Dannon Rampton Design & Construction handles a variety of projects, from design through construction.” 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: construction administration 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 construction administration firms.
Partial evidence: Its own public description names part of construction administration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name construction administration 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 75 construction administration firms based in Los Angeles, United States

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Construction administration firms based in Los Angeles, United States at a glance

As of Sep 16, 2026

20.9%Verified-email coverage

8.4Average contacts per company

1-10Median size (employees)

328.0%Largest-city concentration · New York

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Los Angeles, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 75 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 construction administration 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 Los Angeles, United States whose own description of what they do matches “construction administration 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 construction administration 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 construction administration firms, and records with no verified work email. Companies headquartered outside Los Angeles 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, 131 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.

Construction administration 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 construction administration 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 construction administration firms are there based in Los Angeles, United States?

RevenueBase identified 75 construction administration firms headquartered in Los Angeles, 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?

PCM, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most construction administration firms?

New York leads with 246 headquartered companies, followed by Miami (101) and Houston (82).

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 131 verified decision-maker contacts tracked across these 75 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.