Company lists · Data refreshed September 2026

Top 13 Architecture firms based in Riverside, United States

Name: Architecture firms based in Riverside, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 25 companies tracked

RevenueBase identified 25 architecture firms headquartered in Riverside, United States as of September 2026 and tracks 336 professional contacts across them, including 109 with verified work emails. New York is the largest hub.

This list covers architecture firms headquartered in Riverside, 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

25Companies

336Contacts tracked

109Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 13 largest architecture firms based in Riverside, United States

Ranked by team size

Top 13 of 25 architecture firms based in Riverside, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to architecture 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	TKE Engineering, INC	Indirect evidence	Riverside, CA, United StatesHQ checked Sep 6, 2026	51-200	111 contacts →
	“TKE is Southern California’s premier full service, multi-disciplinary Engineering and Construction industry consulting firms.” Source: company website · checked Sep 6, 2026
2	Ruhnau Clarke Architects	Strong evidence	Riverside, CA, United StatesHQ checked Sep 6, 2026	51-200	101 contacts →
	“Transforming Communities We believe, as our founder, that Architecture is for everyone.” Source: company website · checked Sep 6, 2026
3	Luke Draily Construction Company, INC	Indirect evidence	Riverside, MO, United StatesHQ checked Sep 6, 2026	11-50	15 contacts →
	“Commercial Construction Company General Contractors - Construction Managers - Design Builders Now celebrating our 29th year in business, and the completion of over in projects…” Source: company website · checked Sep 6, 2026
4	TR Design Group Architecture	Strong evidence	Riverside, CA, United StatesHQ checked Sep 6, 2026	1-10	8 contacts →
	“TR Design Group is a strong, quality-oriented architecture and design firm.” Source: company website · checked Sep 6, 2026
5	T & B Engineering, INC	Indirect evidence	Riverside, CA, United StatesHQ checked Sep 6, 2026	1-10	7 contacts →
	“T&B Engineering, Inc.” Source: company website · checked Sep 6, 2026
6	Riverside Engineering	Indirect evidence	Riverside, CA, United StatesHQ checked Sep 6, 2026	11-50	7 contacts →
	“Our team prides itself in using the most innovative technologies available and fostering a culture of continual learning to ensure that we remain leaders in Engineering &…” Source: company website · checked Sep 6, 2026
7	RHA Landscape Architects Planners, INC	Strong evidence	Riverside, CA, United StatesHQ checked Sep 6, 2026	1-10	6 contacts →
	“Established in 1979, RHA Landscape Architects-Planners offers a wide range of landscape architectural and planning services to assist public agencies and private developers in the…” Source: company website · checked Sep 6, 2026
8	JDB Builders Inc. General Contractor	Indirect evidence	Riverside, CA, United StatesHQ checked Sep 6, 2026	11-50	6 contacts →
	“At JDB Builders Inc.” Source: company website · checked Sep 6, 2026
9	Mccreedy-Ruth Construction	Indirect evidence	Riverside, IA, United StatesHQ checked Sep 6, 2026	11-50	6 contacts →
	“We are a construction company focused on making the building process better from start to finish.” Source: company website · checked Sep 6, 2026
10	Idla, INC	Strong evidence	Riverside, CA, United StatesHQ checked Sep 6, 2026	1-10	4 contacts →
	“A landscape architectural firm with extensive experience throughout southern California, IDLA combines art and science to create spaces that inspire interaction with natural…” Source: company website · checked Sep 6, 2026
11	Perimeter Architects	Strong evidence	Riverside, IL, United StatesHQ checked Sep 6, 2026	1-10	2 contacts →
	“Perimeter Architects provides architectural design services, specializing in medical and health/wellness developments.” Source: company website · checked Sep 6, 2026
12	Romero Obeji Interior Design	Indirect evidence	Riverside, CA, United StatesHQ checked Sep 6, 2026	1-10	2 contacts →
	“Design Your Dream Home with Us!” Source: company website · checked Sep 6, 2026
13	Allison & Alexander INC	Indirect evidence	Riverside, MO, United StatesHQ checked Sep 6, 2026	11-50	1 contacts →
	“Founded in 1955 Allison & Alexander has built a reputation of first rate Quality and Customer Service in Design Build, Commercial Construction and Construction Management.” Source: company website · 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: architecture 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 architecture firms.
Partial evidence: Its own public description names part of architecture firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name architecture 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 13 of 25 architecture firms based in Riverside, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 109 reachable decision-makers.

Free signup · no credit card

View the full list →

Architecture firms based in Riverside, United States at a glance

As of Sep 6, 2026

32.4%Verified-email coverage

13.4Average contacts per company

1-10Median size (employees)

9892.0%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Riverside, over 25 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 architecture 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 Riverside, United States whose own description of what they do matches “architecture 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 architecture 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 architecture firms, and records with no verified work email. Companies headquartered outside Riverside 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, 109 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.

Architecture 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 architecture 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 architecture firms are there based in Riverside, United States?

RevenueBase identified 25 architecture firms headquartered in Riverside, 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?

TKE Engineering, INC, headquartered in Riverside, tops this list with the largest team on record.

Which city has the most architecture firms?

New York leads with 2473 headquartered companies, followed by Los Angeles (1046) and Chicago (781).

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 109 verified decision-maker contacts tracked across these 25 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.

Ready to reach these companies? Verified emails and direct dials for all 25 architecture firms based in Riverside, United States. Start with a free account, no credit card.

Download this list →

Related lists

Architecture firms by geography

Browse the directory

Browse: Companies home · Architecture firms in United States · All United States lists · All Architecture firms lists · New lists

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.