Larson & Darby Group

What Larson & Darby Group does

Larson & Darby Group is a privately held architecture and planning firm headquartered in Rockford, Illinois, founded in 1963. The firm operates in the professional services sector with an 11–50 employee headcount, delivering integrated design services spanning architecture, engineering, technological design, and virtual design. Its positioning as a multidisciplinary A&E practice suggests it serves clients needing coordinated building design, engineering systems, and digital visualization under a single engagement, which is typical for regional U.S. design firms targeting commercial, institutional, civic, or industrial projects.

The firm's service mix — combining traditional architectural and engineering disciplines with "technological design" and "virtual design" capabilities — indicates a deliberate move beyond pure drafting into digitally enabled design workflows, likely including BIM, 3D modeling, and visualization services. This positions the firm to participate in projects where clients value integrated delivery and early-stage digital representation. However, the available data is thin: the firm's public website rendered only a verification/loading page at the time of scraping, and no pricing model, client logos, project pipeline, or revenue figures were extractable.

The business model appears to be fee-for-service professional consulting, consistent with U.S. architecture and engineering firms — billing via hourly rates, fixed project fees, or percentage-of-construction-cost arrangements. No marketing channels, distribution model, partnership network, or customer segmentation data is disclosed in the input, which limits visibility into commercial mechanics and target verticals. The combination of long operating history, small headcount, and a specialized service mix suggests a stable, relationship-driven regional practice rather than a high-growth venture.

Name

Larson & Darby Group

Website

https://larsondarby.com

Company type

Private

Founded year

1963

Operating status

Operating

Headcount range

11–50 employees

Short description

Larson & Darby Group is a privately held architecture and planning firm founded in 1963 in Rockford, Illinois, providing integrated architecture, engineering, technological design, and virtual design services with an 11–50 employee headcount.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (541310), Engineering Services (541330)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Sustainable/Green Building & LEED Consulting (BPAHAKAG)

akta.pro secondary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

Keywords

• Architectural services
• Engineering design
• Virtual design
• Building technology design
• Structural engineering

Headquarters

HQ city

Rockford

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations

Core offering

Larson & Darby Group is an architecture and planning firm that provides professional design services across four disciplines: architecture, engineering, technological design, and virtual design. The firm delivers integrated building and infrastructure design solutions for organizational clients, combining traditional architectural and engineering practice with technology-systems design and digital/virtual design capabilities. It sells its own design services rather than reselling third-party offerings.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Recent moves2 records

Expansion highlights2 records

Direct peers

• Wight & Company: Illinois-based integrated architecture, engineering, and construction firm of comparable size offering multi-discipline design services. Closely comparable given overlapping AE-plus-design model and shared Midwest base.
• CannonDesign: Multi-disciplinary architecture and engineering firm of broadly similar scale, delivering integrated design across healthcare, education, and commercial sectors. Highly comparable operating model and service mix to Larson & Darby.
• Legat Architects: Mid-sized Midwest architecture and engineering firm headquartered in Illinois. Comparable in headcount scale, geographic footprint, and primary focus on architecture-led design services.

Broad incumbents

• DLR Group: Larger U.S.-based integrated design firm delivering architecture and engineering across multiple sectors. Comparable integrated AE delivery model, but at significantly greater scale and national footprint.
• SmithGroup: Established U.S. architecture and engineering firm with integrated design practices. Comparable in delivering multi-discipline AE services, though larger and more geographically distributed than Larson & Darby.
• Perkins&Will: Global architecture and design firm offering integrated design services across building types. Overlaps in integrated AE delivery but operates at substantially greater scale and geographic reach.
• HOK: Global architecture, engineering, and planning firm with deep integrated delivery capabilities. Comparable multi-discipline service model, though at vastly larger scale and international footprint.
• HKS: Major U.S. architecture and engineering firm known for integrated design across healthcare, sports, and commercial sectors. Comparable integrated AE offering, but materially larger.
• Stantec: Large North American engineering, architecture, and consulting firm. Comparable professional services overlap, though substantially larger and more diversified across infrastructure and environmental work.
• Burns & McDonnell: Large U.S. engineering, architecture, and construction services firm with broad sector coverage. Comparable in offering integrated AE services, but at significantly larger scale and with a different sector mix.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights4 records

Customer concentration

• LinkedInlinkedin.com/company/larson-darby-group

Revenue estimate

Valuation estimate

Number of profiles

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 Larson & Darby Group