What Lionakis does

Lionakis is a privately held, employee-owned architecture, structural engineering, and interior design firm headquartered in Sacramento, California, with additional offices in Oakland, Irvine, San Jose, and San Diego. Founded in 1909 by George Sellon, California's first State Architect, the firm has operated continuously for 115+ years and currently employs 200+ team members, including 40+ shareholders who lead the practice. The company delivers integrated multidisciplinary services across five primary market sectors: PK-12 education, higher education, healthcare, civic/government, and commercial, with a particular concentration in publicly funded projects in California.

The firm combines architecture, structural engineering, and interior design in a single integrated practice, enabling streamlined project delivery for clients such as school districts, community colleges, county and state agencies, healthcare systems (Kaiser Permanente, UCI Health), and civic institutions (Judicial Council of California, California Department of General Services). Notable projects include the 520,000 sq ft California DMV Headquarters renovation and seismic retrofit (LEED Silver), the High Desert Regional Health Center (LEED Gold, DBIA-recognized), the Orange High School STEM Center, and the California Firefighters Memorial Expansion (DBIA National Award of Merit, 2025). Lionakis also owns obrARCHITECTURE as a wholly-owned subsidiary.

Lionakis generates revenue through project-based professional services engagements, secured via competitive bidding, direct procurement, sole-source awards, and long-term repeat client relationships. Pricing is project-specific and quote-based, not publicly disclosed. The firm does not have venture backing, public listings, or external institutional investors; it is owned and governed by its employee-shareholders. It is not engaged in software or platform businesses and does not disclose AI/ML capabilities; technology use centers on standard BIM/CAD/design tools. Marketing is driven primarily by industry reputation, professional organization participation (AIA, USGBC, IIDA, SEAOC), project awards, and the Lionakis Foundation's community engagement.

Name

Lionakis

Legal name

Lionakis

Website

https://lionakis.com

Company type

Private

Founded year

1909

Operating status

Operating

Headcount range

101–250 employees

Short description

Lionakis is an employee-owned architecture, structural engineering, and interior design firm founded in 1909, serving PK-12, higher education, healthcare, civic, and commercial clients across California through five offices and 200+ staff.

Ownership category

akta.pro rank

Product category

Architectural and Engineering Services

NAICS

Architectural Services (54131), Architectural, Engineering, and Related Services (5413), Interior Design Services (54141)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Interior Design Services (BPAHAKAB)

akta.pro secondary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

Keywords

• Architectural design services
• Structural engineering services
• Interior design services
• Public sector building design
• Educational facility architecture

Headquarters

HQ city

Sacramento

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architecture and Engineering Services: Lionakis generates revenue through professional architecture, structural engineering, and interior design services for construction and renovation projects. Revenue is project-based, typically involving long-term engagements with government agencies, educational institutions, healthcare providers, and commercial clients.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Lionakis provides integrated architecture, structural engineering, and interior design services for public-sector and institutional clients across California. The firm delivers full-service design for new construction, modernization, and renovation projects in PK-12 education, higher education, healthcare, civic, and commercial sectors through a single multidisciplinary practice. Services include space planning, material and furniture selection, brand creation, structural engineering integrated with the design team, and LEED-certified sustainable design.

Product overview

Lionakis is an architecture, structural engineering, and interior design firm offering integrated project delivery across PK-12, higher education, healthcare, civic, and commercial market sectors. The company operates as a single unified multidisciplinary practice rather than a platform with separate modules—its core offering combines architecture, structural engineering, and interior design services delivered by an integrated team.obrARCHITECTURE operates as a subsidiary brand, officially joining the Lionakis team to expand capabilities. The firm's services are delivered through five California offices (Sacramento, Irvine, San Diego, San Jose, Oakland) and are characterized by a collaborative approach where architects, engineers, and interior designers work together from project inception through completion.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture Services Full-service architectural design for PK-12, higher education, healthcare, civic, and commercial sectors, focused on operational improvements, resource sustainability, and human-centered solutions. Services are delivered through an integrated practice combining architects with structural engineers and interior designers from project inception through completion.
• Structural Engineering Structural engineering delivered as part of the integrated design team, offering deep knowledge of current codes, construction methods, and emerging technologies. Includes seismic retrofit expertise and established relationships with California approval agencies, supporting civic, healthcare, and educational facility projects at large scale.
• Interior Design Interior design services focused on space planning, material selection, specialized furniture selection and procurement, and brand or identity creation. Work is delivered across workplaces, healing spaces, civic, and educational environments as part of Lionakis's integrated multidisciplinary practice.
• obrARCHITECTURE (A Lionakis Company) Subsidiary architecture firm offering architecture services with deep roots in California and a shared focus on creating meaningful community impact through projects in essential sectors. Operates under the Lionakis ownership structure as a wholly owned subsidiary brand.

Named customers14 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Five partnerships are on record, tiered core and major.

• obrARCHITECTUREcoreStrategic or Co-development PartnerobrARCHITECTURE officially joined the Lionakis team as a subsidiary company. This partnership unites two firms with deep roots in California and a shared focus on creating meaningful community impact through projects in essential sectors. By combining capabilities, clients receive deeper expertise and service, strengthening the integrated approach to project design and delivery.
• ZGF ArchitectscoreStrategic or Co-development PartnerLionakis served as Associate Architect alongside ZGF Architects as Architect of Record on the Confidential State Office Building project. The 10-story addition includes five floors of office space and a five-level parking structure with amenities including childcare facility, cafeteria, and fitness center.
• SwinertonmajorImplementation/ SI/ Consulting PartnerSwinerton served as Design-Build Contractor for the High Desert Regional Health Center project, a three-building campus on 10 acres bringing comprehensive medical services to the Los Angeles County High Desert region.
• Turner Construction CompanymajorImplementation/ SI/ Consulting PartnerTurner Construction Company served as General Contractor for the California Firefighters Memorial Expansion project, working in close collaboration with the California Fire Foundation and Lionakis.
• Romo StudiosmajorStrategic or Co-development PartnerAdan Romo of Romo Studios created the sculptures for the California Firefighters Memorial Expansion. The work continues the legacy of his father Jesus Romo, who created the original sculptures, providing a meaningful thread of continuity.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Market position

Strengths4 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/lionakis
• Facebookfacebook.com/lionakis-115506275132739
• LinkedInlinkedin.com/company/lionakis

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

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 Lionakis