Insights

Longstanding Expertise Established CPA firm with 75+ years in tax, accounting, real estate taxation, auditing and government consulting, suggesting a trusted advisory relationship and potential for bundled services.

Regional Focus Southern California heritage with deep Orange County ties and a strong real estate developer client base, indicating cross-selling opportunities to local developers, builders, and municipal agencies.

Midmarket Scale 50–200 employees and revenue in the low to mid seven figures, signaling needs for scalable solutions such as outsourced accounting, tax optimization programs, and ERP/tech modernization for growing firms.

Tech Stack Fit Uses web and data technologies (WordPress, MySQL, JSON-LD, RSS) alongside traditional services, presenting upsell potential for modern analytics, cloud-based financial systems, and cybersecurity/software assessments.

Growth opportunities Past expansions into diverse industries and government work open doors for assurance, risk advisory, and consulting services to expand client footprints and cross-sell to existing governmental and corporate clients.

Diehl Evans & Co., LLP Tech Stack

Diehl Evans & Co., LLP uses 8 technology products and services including RSS, WordPress, MySQL, and more. Explore Diehl Evans & Co., LLP's tech stack below.

RSS

Content Management System

WordPress

Content Management System

MySQL

Database

NameBright

Domain Name Services

JSON-LD

Javascript Frameworks

jQuery Migrate

Javascript Libraries

Bootstrap

UI Frameworks

TouchSwipe

Web Tools And Plugins

Diehl Evans & Co., LLP Email Formats	Example	Percentage
FirstL@diehlevans.com	JohnD@diehlevans.com	100%

Diehl Evans & Co., LLP Email Formats

Example

Percentage

FirstL@diehlevans.com

JohnD@diehlevans.com

100%

Frequently Asked Questions

Where is Diehl Evans & Co., LLP's headquarters located?

Diehl Evans & Co., LLP's main headquarters is located at 5 Corporate Park Suite 100 Irvine, California 92606 United States. The company has employees across 1 continents, including North America.

What is Diehl Evans & Co., LLP's phone number?

You can contact Diehl Evans & Co., LLP's main corporate office by phone at

+1-760-729-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Diehl Evans & Co., LLP's official website and social media links?

Diehl Evans & Co., LLP's official website is diehlevans.com and has social profiles on LinkedIn.

What is Diehl Evans & Co., LLP's SIC code NAICS code?

Diehl Evans & Co., LLP's SIC code is 8721 - Accounting, Auditing, and Bookkeeping Services NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Diehl Evans & Co., LLP have currently?

As of February 2026, Diehl Evans & Co., LLP has approximately 51 employees across 1 continents, including North America. Key team members include Accounting Staff: D. F.Administrator: L. B.. Explore Diehl Evans & Co., LLP's employee directory with LeadIQ.

What industry does Diehl Evans & Co., LLP belong to?

Diehl Evans & Co., LLP operates in the Accounting industry.

What technology does Diehl Evans & Co., LLP use?

Diehl Evans & Co., LLP's tech stack includes RSSWordPressMySQLNameBrightJSON-LDjQuery MigrateBootstrapTouchSwipe.

What is Diehl Evans & Co., LLP's email format?

Diehl Evans & Co., LLP's email format typically follows the pattern of FirstL@diehlevans.com. Find more Diehl Evans & Co., LLP email formats with LeadIQ.

Diehl Evans & Co., LLP

Q: What is Diehl Evans & Co., LLP's official website and social media links?

Diehl Evans & Co., LLP's official website is diehlevans.com. Diehl Evans & Co., LLP has social profiles on LinkedIn.

Q: How many employees does Diehl Evans & Co., LLP have currently?

Diehl Evans & Co., LLP has approximately 51 employees.

Q: What technology does Diehl Evans & Co., LLP use?

Diehl Evans & Co., LLP's tech stack includes Apache, NameBright, Open Graph, LiteSpeed, Bootstrap.

Q: What is Diehl Evans & Co., LLP's NAICS code?

Diehl Evans & Co., LLP's NAICS code is 5412 (Accounting, Tax Preparation, Bookkeeping, and Payroll Services).

AccountingCalifornia, United States51-200 Employees

Diehl Evans & Co., LLP is an accounting firm based in Irvine, California, at 5 Corporate Park Suite 100, Irvine, California 92606. The firm employs between 51 and 200 people. Founded in the 1920s in Santa Ana, the firm became Diehl, Evans and Company in 1954 and is described as one of the oldest CPA firms in Southern California. It developed expertise in real estate taxation and accounting in Orange County and has since expanded to offer auditing and consulting services to clients across multiple industries, including governmental agencies. Reported revenue is in the range of $1 million to $10 million.

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