Fallahi Zaher, Attorney At Law, CPA
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24 firms listed · 14 in Costa Mesa · 1 open 24/7 · 3 open weekends · 19 rated 4.5+
Data verified October 16, 2026
The 24 firms listed for Costa Mesa, CA are accounting practices that serve businesses and organizations. What each states about its CPA license and assurance work comes from its own website; ratings and quotes come from public reviews.

14 of the 24 firms we list are based in Costa Mesa; the other 10 serve Costa Mesa from towns including Irvine (8 mi), Santa Ana (5 mi) and Newport Beach (4 mi). 22 of the firms on this page have a rating, from 4.0 to 5.0 across 784 reviews; 9 have 50 or more reviews and 19 are rated 4.5 or higher. When clients rate these firms on specific qualities, they most often praise professionalism (94%), responsiveness (69%) and quality (60%). 1 is open around the clock; 3 are open on Saturdays and 1 on Sundays. The services the firms on this page list most often on their websites are tax services (4), business consulting (2), business services (2), estate planning (2) and quickbooks services (2). 1 shows a license on its website and 4 have a BBB rating of A or A+. Domain records put 17 websites of the firms on this page at ten or more years old; the oldest dates from 1998. 1 offers urgent consultations; 1 offers payment plans; 6 offer a free initial consultation and 3 are family- or locally-owned. We count these figures across the firms on this page; distances are straight-line, and hours and prices change, so confirm the details with the firm before you book a consultation.
Website details are held for 23 of the 24 firms on this page. Most name the engagement types they perform and the industries they serve, which is the quickest way to see whether audit work is core business or an occasional job for them.