DDR&S

What DDR&S does

DDR&S (Dudnick Detwiler Rivin & Stikker LLP) is a San Francisco-based limited liability partnership law firm operating from a single office at 235 Montgomery Street. The firm delivers legal services across five interconnected practice areas — Business Practice, Commercial Litigation, Real Estate Practice, Tax Practice, and Family Wealth Practice — serving high-net-worth individuals and families as its primary client segment, with a secondary segment of closely-held businesses, entrepreneurs, and public companies. The firm positions itself as a multi-disciplinary alternative to larger Bay Area firms, with partners such as Thomas J. Stikker, Jeffrey T. Antonchuk, Jonathan Rivin, and Francisco D. Silva holding recognized expertise in estate planning, wealth transfer vehicles (QPRTs, GRATs, IDGTs), and real estate law; the firm emphasizes a non-standardized, tailored approach to client matters.

The firm has no proprietary technology platform and offers no software products, APIs, or integrations; it operates purely as a professional services practice. Revenue is generated through client- and matter-specific legal fees, with no publicly disclosed pricing schedules. Go-to-market is sales-led and grounded in referrals, word-of-mouth, and professional network relationships within the San Francisco Bay Area legal and business community, supported by a content presence on its website (ddrs.com) including practice area pages, attorney profiles, and a blog/news section. For matters exceeding internal expertise (e.g., ERISA, bankruptcy), DDR&S leverages a curated external network of Bay Area and national specialists.

The firm is independently owned by its partner group — including at least seven partners — with no private equity, parent entity, or external investor involvement. The partnership composition has been relatively stable, with two founding partners (Dudnick and Detwiler) now retired and one new partner (Silva) admitted in 2020. Geographic scope is regional (San Francisco Bay Area), and the firm maintains no global footprint.

Name

DDR&S

Legal name

Dudnick Detwiler Rivin & Stikker LLP

Website

https://ddrs.com

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

DDR&S is a San Francisco-based limited liability partnership law firm delivering multi-disciplinary legal services across business, litigation, real estate, tax, and family wealth practices, primarily serving high-net-worth individuals, families, and closely-held businesses in the Bay Area.

Ownership category

akta.pro rank

Product category

Legal Services

NAICS

Offices of Lawyers (541110)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Family & Private Client (Trusts & Estates) Law (BPAHAAAK)

Keywords

• Legal services
• Estate planning
• Commercial litigation
• Business law
• Tax planning

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Legal Services Fees: DDR&S generates revenue through fees charged for legal advisory services across its practice areas: Business, Commercial Litigation, Real Estate, Tax Practice, and Family Wealth Practice. Fee structures are client-specific and likely vary by matter type, complexity, and engagement terms.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

DDR&S (Dudnick Detwiler Rivin & Stikker LLP) is a San Francisco-based law firm delivering legal advisory and representation services across five interconnected practice areas: Business (entity formation, M&A, commercial contracts), Commercial Litigation, Real Estate (transactions, leasing, title), Tax Practice, and Family Wealth (estate planning, trusts, wealth transfer). Services are provided through direct attorney-client engagements and are tailored to each client's specific legal and tax circumstances.

Product overview

DDR&S (Dudnick Detwiler Rivin & Stikker LLP) is a San Francisco-based law firm providing legal services across five practice areas: Business Practice, Commercial Litigation, Real Estate Practice, Tax Practice, and Family Wealth Practice. The firm does not offer technology products or software platforms. Services are delivered through individual attorney-client relationships in areas including corporate transactions, civil litigation, estate planning, and tax law.

Differentiator

Problem solved

Functional benefit

Products and services

• Business Practice Corporate and business law services including entity formation, mergers and acquisitions, corporate governance, commercial contracts, and commercial transactions for closely-held businesses, startups, and public companies.
• Commercial Litigation
• Real Estate Practice
• Tax Practice
• Family Wealth Practice

Quantifiable outcome

• Estate tax savings can exceed $500,000 on a single QPRT transaction involving a $1,000,000 residence.

Named customers6 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• External Bay Area and National Legal/Professional SpecialistsminorImplementation/ SI/ Consulting PartnerDDR&S maintains an external network of close working relationships with other lawyers and professionals in the San Francisco Bay Area and throughout the country for matters outside its areas of expertise, including ERISA and bankruptcy matters. The firm states it 'only recommends the best people who will handle your matter the way we would.' This network enables DDR&S to serve clients with complex needs that extend beyond its core practice areas.

Scale indicators1 record

Recent moves4 records

Expansion highlights2 records

Direct peers

• Hanson Bridgett LLP: San Francisco-based full-service law firm with overlapping practice areas including business, real estate, tax, and trusts & estates serving Bay Area businesses and HNW families. Comparable as a Northern California multi-disciplinary firm competing for the same client base.
• Farella Braun + Martel LLP: San Francisco boutique firm with comparable practice mix across business, real estate, tax, and litigation. Similar size and boutique positioning, serving Bay Area businesses, families, and entrepreneurs with personalized service.
• Wendel Rosen LLP: East Bay/Bay Area full-service boutique with business, real estate, tax, and estate planning practices. Comparable as a regional California boutique serving HNW individuals and closely-held businesses with integrated multi-practice capabilities.
• Buchalter Nemer PC: California-based business law firm with practices spanning corporate, real estate, tax, and litigation. Comparable as a multi-office California firm competing for similar mid-market and HNW clients across overlapping practice areas.
• Jeffer Mangels Butler & Mitchell LLP: Los Angeles-headquartered firm with business, real estate, tax, and trusts & estates practices serving HNW families and entrepreneurs. Comparable California boutique with overlapping practice areas and similar client profile.
• Hopkins & Carley LLP: Silicon Valley-based law firm offering business, real estate, tax, and estate planning services. Comparable as a Northern California boutique serving tech entrepreneurs, family offices, and HNW individuals with similar practice mix.
• Berding | Weil LLP: Bay Area boutique focusing on real estate, business, and tax-related matters. Comparable as a regional California boutique competing for similar mid-market and HNW clientele with overlapping real estate and business practice expertise.
• Allen Matkins Leck Gamble Mallory & Natsis LLP: California-based firm with strong real estate, business, and tax practices serving real estate investors, developers, and HNW clients. Comparable regional firm with overlapping real estate and business practice focus.
• Stubbs Alderton & Markiles LLP: Southern California boutique serving tech, life sciences, and entrepreneurial businesses with business, real estate, and tax capabilities. Comparable boutique firm with similar multi-practice, entrepreneur-focused positioning.

Broad incumbents

• Cooley LLP: Large California-headquartered law firm with extensive business, tax, and estate planning practices serving venture-backed companies and HNW founders. Comparable as a broader incumbent competing for the same Bay Area tech entrepreneur and founder clientele, though at much greater scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat2 records

Key risks5 records

Key highlights1 record

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles15 records

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 DDR&S