What Fishman, Block + Diamond does

Fishman, Block + Diamond (legal entity: Fishman, Block + Diamond LLP, DBA 'Fishman, Block + Diamond by Cerity Partners' / 'FB+D by Cerity Partners') is a California-based, full-service accounting and advisory firm headquartered at 16830 Ventura Blvd., Suite 400, Encino. Founded in 1980 and operating with 47 professionals as of December 2024, the firm delivers eight core service lines: income tax planning, tax compliance (federal, California, multi-state, and foreign filings including FinCEN 114, PFIC, and controlled foreign corporations), real estate planning and structuring (1031 exchanges, opportunity zones, partnership taxation), trust/gift/estate tax compliance, accounting and auditing (delivered through subsidiary FBD Assurance LLP), business advisory and consulting, multi-generational wealth transfer planning, and family office / entertainment business management with Monte Carlo-based long-term financial planning.

The firm targets high-net-worth individuals and families, real estate investors and developers, entertainment industry clients, and multi-generational family businesses, with a stated 40+ years of real estate tax specialization and 35+ years of entertainment business management experience. Its delivery model is partner-led with a mandatory two-level review process, partner and senior tax manager involvement in all planning work, and AICPA quality review participation since 1988 with unqualified opinions maintained annually. Supporting technology includes advanced tax research and preparation software, ShareFile for secure file exchange, CPACharge for online payments, and a custom business management software platform providing configurable financial reporting and weekly cash balance reporting.

Commercially, the firm operates on a quote-based professional services fee model with services customized per client; the firm does not publicly disclose pricing. Go-to-market is relationship-driven, relying on thought leadership publications spanning 2010-2025, client testimonials, and a referral network that includes law firms (Greenberg Glusker LLP, Loeb & Loeb LLP), bankers, insurance agents, and investment managers. On December 17, 2024, Fishman, Block + Diamond was acquired by Cerity Partners, advised by Republic Capital Group, integrating all 47 professionals into Cerity Partners' wealth management platform; the firm now operates as a subsidiary brand under the Cerity Partners umbrella.

Name

Fishman, Block + Diamond

Legal name

Fishman, Block + Diamond LLP

Website

https://fbco.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

11–50 employees

Short description

Fishman, Block + Diamond is an Encino, California-based full-service accounting and advisory firm (47 professionals) serving high-net-worth individuals, real estate investors, entertainment clients, and multi-generational family businesses across tax, audit, estate, and family office services; acquired by Cerity Partners in December 2024.

Ownership category

akta.pro rank

Headquarters

HQ city

Encino

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Professional Services Fees: Full-service accounting and advisory firm providing tax planning, compliance, and wealth management services to high-net-worth individuals and families

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Fishman, Block + Diamond is a tax, accounting, and advisory firm that provides tax planning and compliance, real estate tax planning, trust and estate planning, accounting and auditing, business advisory, and family office / entertainment business management services. Its clients include high-net-worth individuals and families, real estate investors and developers, entertainment industry professionals, and privately-held businesses.

Product overview

Fishman, Block + Diamond by Cerity Partners is a full-service accounting and advisory firm offering a unified suite of professional services. The firm operates eight core service lines: Income Tax Planning, Tax Compliance Services, Real Estate Planning & Structuring, Trust/Gift/Estate Tax Compliance Services, Accounting & Auditing (delivered through affiliated entity FBD Assurance LLP), Business Advisory & Consulting, Multi-Generational Wealth Transfer Planning, and Family Office/Entertainment Business Management & Long-term Financial Planning. These services are designed to work together to serve high-net-worth clients, with particular specialization in real estate, multi-generational wealth transfer, family offices, and entertainment business management. The firm was acquired by Cerity Partners in December 2024.

Differentiator

Problem solved

Functional benefit

Products and services

• Tax Planning and Compliance

Quantifiable outcome

• Clients report saving money and making better decisions through sound advice and expert guidance
• +1 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core and minor.

• Cerity PartnerscoreStrategic or Co-development Partner · 17 December 2024Cerity Partners acquired Fishman Block + Diamond LLP to enhance its tax and wealth management services. The deal integrates 47 professionals from FBD, an independent firm based in Encino, California, creating a combined entity.
• CPAmerica (Apex)minorOthersAffiliated with CPAmerica/Apex, a network of independent accounting firms providing access to resources, expertise, and quality standards across the profession.

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Andersen Tax: Independent tax and advisory firm with deep specialization in real estate, HNW, and multi-state tax planning — structurally and strategically very similar to FBD, with similar client profile and partner-led service model.
• Anchin, Block & Anchin: Mid-market NYC-based CPA and advisory firm serving HNW individuals, real estate, and professional services clients with tax planning, accounting, and business advisory — closely comparable in size, scope, and client mix to FBD.
• Marks Paneth: Northeast-based full-service accounting firm with strong real estate, HNW, and entertainment industry practices — highly comparable vertical mix and similar middle-market positioning to FBD.
• Citrin Cooperman: Mid-market CPA and advisory firm with strong practice areas in real estate, HNW individuals, and family offices — closely comparable client composition and partner-led service delivery to FBD.
• Friedman LLP: Mid-market full-service accounting firm with core practices serving real estate, HNW, and professional services clients — directly comparable in size, mix, and relationship-driven model.
• KBF CPAs: Specialty firm providing tax, accounting, and business management services to entertainment industry clients and HNW individuals — directly comparable to FBD's family office / entertainment business management practice.
• WithumSmith+Brown: Mid-market advisory and accounting firm with nationally recognized real estate and HNW practices — comparable specialty positioning to FBD with stronger geographic footprint.

Broad incumbents

• CohnReznick: Top-20 national accounting firm with one of the deepest real estate tax and advisory practices in the US — a larger competitor with overlapping RE/HNW tax service lines, but serving a broader mid-market and enterprise book.
• Armanino: Top-25 US accounting and business consulting firm with strong real estate and HNW practices, significant technology investments, and a California presence — adjacent competitor in the same verticals.
• Eide Bailly: Top-25 US accounting firm with strong HNW tax, real estate, and family office services — comparable service lines but broader geographic and industry reach than FBD.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Fishman, Block + Diamond