What Whitley Manufacturing does

Whitley Manufacturing is a U.S.-based custom commercial modular building manufacturer founded in 1945 and headquartered in South Whitley, Indiana. The company operates within the Sunbelt Modular network, a wholesale modular building management company that coordinates 12+ affiliated manufacturers sharing resources, engineering knowledge, and best practices. Whitley designs and produces prefabricated modular building units delivered as finished structures for direct project installation by contractors, builders, developers, and government entities.

The company's core technical capability is converting traditional site-built architectural plans into modular-friendly designs, a service positioning the company as one of the few manufacturers able to retrofit existing designs rather than requiring custom modular plans from inception. Output serves eight distinct verticals: commercial (dealerships, offices), religious institutions, education, data centers (including SCIF facilities), healthcare, government/military, residential (multi-story housing), and energy (including charging stations). Pricing is quote-based and project-specific, with no public rate disclosure.

Whitley's go-to-market is enterprise field sales layered onto the Sunbelt Modular distribution network, enabling coast-to-coast delivery across 50+ states and provinces via 220+ partners. The company leverages Modular Building Institute (MBI) and American Institute of Architects (AIA) affiliations for industry credibility. Leadership consists of Simon Dragan (President & CEO), Drew Welborn (Executive Vice President), and Michael Ransbottom (VP of Operations). With 101-250 employees and 80 years of operating history, Whitley's revenue is not publicly disclosed.

Name

Whitley Manufacturing

Legal name

Whitley Manufacturing

Website

https://whitleyman.com

Company type

Private

Founded year

1945

Operating status

Operating

Headcount range

101–250 employees

Short description

Whitley Manufacturing is a U.S. custom commercial modular building manufacturer founded in 1945, operating within the Sunbelt Modular network. It designs and produces prefabricated buildings across commercial, religious, education, data center, healthcare, government/military, residential, and energy sectors, serving contractors, developers, and government clients via quote-based project sales.

Ownership category

akta.pro rank

Product category

Modular Building Manufacturing

NAICS

Prefabricated Wood Building Manufacturing (321992), Commercial and Institutional Building Construction (236220)

SIC

Prefabricated Wood Bldgs & Components (2452)

akta.pro primary industry

Residential Modular & Prefabricated Home Construction (IMAFABAF)

akta.pro secondary industry

Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)

Keywords

• Modular building construction
• Commercial modular manufacturing
• Prefabricated buildings
• Modular design conversion
• Custom modular structures

Headquarters

HQ city

South Whitley

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Infrastructure

Revenue model

1. Modular Building Manufacturing and Sales: Whitley Manufacturing designs and produces various modular buildings for multiple sectors. Revenue is generated through the sale of prefabricated modular building units to commercial, government, healthcare, education, and other sector clients. The company operates as part of the Sunbelt Modular network which shares resources, knowledge, and best practices to benefit product value.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Whitley Manufacturing designs and produces custom commercial modular buildings for sectors including commercial, religious, education, data centers, healthcare, government/military, residential, and energy customers. The company translates site-built architectural plans into modular-friendly designs and delivers prefabricated structures from its South Whitley, USA facility as part of the Sunbelt Modular network.

Product overview

Whitley Manufacturing is a modular building manufacturer that operates as one of the Sunbelt Companies within the Sunbelt Modular network. Sunbelt Modular is a wholesale modular building management company formed to help its individual company brands share resources, knowledge, and best practices. Whitley Manufacturing, along with other affiliated brands (including Britco, Custom Building (C-B), Northwest, Specialized Structures (SSI), proMOD, Phoenix Manufacturing (PMI), probox, Southeastern, Mr. Steel, Indicom, and AmTex), collectively provides sustainable, cost-effective modular buildings across the United States. The company specializes in prefabricated nonresidential building systems and serves diverse markets including commercial, religious institutions, education, data centers, healthcare, government/military, residential, and energy sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Custom Commercial Modular Buildings Factory-built custom commercial modular buildings serving commercial, religious, education, data center, healthcare, government/military, residential, and energy buyers. Whitley converts site-built architectural plans into modular-friendly designs for delivery.
• Modular Design Conversion Services Translation of traditional site-built architectural plans into modular-friendly designs, enabling customers to retain conventional architectural intent while leveraging factory-built modular construction.
• Data Center Modular Buildings Custom modular structures built for data center operators and developers requiring rapid, quality-controlled facility deployment.
• Healthcare Modular Buildings Custom modular buildings produced for healthcare organizations to support clinical, administrative, and support facility needs.
• Government and Military Modular Buildings Custom modular buildings built for federal, state, local, and military customers requiring standardized quality and rapid deployment.
• Education Modular Buildings Custom modular buildings produced for educational institutions for classrooms, administrative, and ancillary facility needs.

Quantifiable outcome

• 120+ Project Awards from the Modular Building Institute
• +2 more outcomes

Segments8 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Three partnerships are on record, tiered core and minor.

• Sunbelt ModularcoreStrategic or Co-development PartnerWhitley Manufacturing is one of the Sunbelt Companies - affiliated modular manufacturers that share resources, knowledge, and best practices to benefit product value in the market. Sunbelt Modular is a Wholesale Modular Building management company formed to help individual company brands collaborate for mutual benefit.
• Modular Building Institute (MBI)minorGTM or Marketing PartnerIndustry affiliation providing credibility and industry visibility. Sunbelt Modular displays MBI logo as part of their affiliations section, indicating membership and association with the modular building industry association.
• American Institute of Architects (AIA)minorGTM or Marketing PartnerIndustry affiliation with AIA indicates professional architectural community connection. Sunbelt Modular displays AIA logo as part of their affiliations section.

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• ATCO Structures & Logistics: ATCO is a global modular space and building provider with strong government, workforce housing, and commercial modular offerings — comparable vertically though at larger scale and broader geographic reach.
• McGrath RentCorp: McGrath's Mobile Modular division rents and sells commercial modular buildings across education, healthcare, government, and commercial — overlapping customer verticals with Whitley, though with a rental-heavy model.
• Clayton Homes: Clayton is the largest U.S. manufactured and modular home builder; overlaps with Whitley's residential modular segment but is overwhelmingly residential-focused and at far greater scale.
• WillScot Mobile Mini Holdings: WillScot is the largest North American modular space provider (mobile offices, storage, modular buildings). It overlaps with Whitley on commercial modular buildings but at much larger scale and broader product breadth including rentals.

Emerging players

• Plant Prefab: Plant Prefab is a technology-driven prefabricated home and commercial building manufacturer using sustainable materials and factory automation — emerging player in custom modular construction with overlapping custom design capabilities.

Direct peers

• NRB Inc. NRB designs and manufactures custom modular buildings for commercial, industrial, and institutional customers across North America — directly comparable scope, customization, and customer mix to Whitley.
• Vanguard Modular Building Systems: Vanguard designs and manufactures permanent and temporary modular commercial buildings for education, healthcare, government, and commercial customers — directly comparable to Whitley's product and customer mix.
• Triumph Modular: Triumph provides custom modular buildings for commercial, educational, healthcare, and government clients in the Northeast US — comparable vertically with Whitley though more regionally concentrated.
• Phoenix Modular Elevator / Phoenix Manufacturing: Another Sunbelt Modular sister brand focused on custom commercial modular construction; offers nearly identical product capabilities and customer segments as Whitley.
• Britco (Sunbelt Modular): Britco is a sister brand within the Sunbelt Modular network and a direct peer — both manufacture custom modular commercial buildings across North America with shared resources, branding, and overlapping customer verticals.

Market position

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Whitley Manufacturing