Septagon Construction

What Septagon Construction does

Septagon Construction Company is a privately-held, Missouri-incorporated, full-service commercial, industrial, and institutional construction firm founded in the mid-1940s and headquartered at 113 East Third Street, Sedalia, Missouri. It operates from five regional offices across Missouri (Sedalia, Jefferson City, Columbia) and Iowa (Grimes/Des Moines, Cedar Rapids), serving clients throughout the Midwest including into Illinois, Wisconsin, and Minnesota. The company delivers projects under design-build, general contracting, construction management, multi-site construction management, commercial and industrial roofing, project development, architectural design, and ongoing maintenance/repair service models, with a Septagon Services subsidiary providing recurring facility support. As a certified Butler Builder, Septagon holds access to Butler pre-engineered steel building systems including the MR-24 standing-seam roof system, and self-performs concrete, steel erection, and carpentry work in-house. Operational technology is conventional for the sector, including thermal imaging for roof diagnostics, with no disclosed AI/ML capabilities.

The company operates a project-based, quote-driven revenue model using direct sales executed through division presidents and field executives who manage enterprise and mid-market client relationships across nine primary verticals: industrial, commercial, government/municipal, dealerships, healthcare, education, religious, financial/office, and senior living/long-term care. Customer concentration is diversified by vertical, with repeat multi-site programs (Kwik Star, Ag Power) layered alongside institutional anchors (Anheuser-Busch/Budweiser, Brownells, Core & Main) and municipal work (Sedalia Fire and Police, Moniteau County Jail, Liberty Fire Station #2). Revenue mechanics reflect standard GC/CM economics: hard-bid and negotiated contracts, design-build fee structures, and recurring maintenance contracts via Septagon Services, with pricing driven by project scope, steel-building specifications, and self-performed labor mix.

The go-to-market model relies on regional relationship density and referral-driven new business led by divisional leadership rather than centralized marketing or inside sales, supported by 70-plus years of operating history and a multi-decade-tenured leadership bench that has produced recent internal promotions across the Sedalia, Des Moines, and Cedar Rapids divisions. Geographic positioning in lower-density Midwestern markets and self-performed crew capabilities are the primary structural defenses, while the Butler Builder designation anchors a differentiated offering in steel-building construction.

Name

Septagon Construction

Legal name

Septagon Construction Company

Website

https://septagon.com

Company type

Private

Founded year

1945

Operating status

Operating

Headcount range

251–500 employees

Short description

Septagon Construction is a privately-held, Missouri-based design-build, general contracting, and construction management firm serving commercial, industrial, institutional, and multi-site retail clients across the Midwest from five offices in Missouri and Iowa, with self-performed concrete, steel, and carpentry crews and certified Butler steel-building capabilities.

Ownership category

akta.pro rank

Headquarters

HQ city

Sedalia

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. General Contracting Services: Traditional general contracting involving extensive planning before projects break ground. Selection is based on competitive or negotiated bids. Septagon analyzes project drawings, reviews scope, collects subcontractor quotes, and factors in overhead costs and profit.
2. Design-Build Services: Single source design-build construction services where the same experienced team works from start to finish, ensuring seamless construction process. Includes own concrete, steel and carpentry crews.
3. Construction Management Services: Represents owner's interests providing valuable oversight from start to finish. Manages project budget, job site safety and quality. Can serve as agent or construction manager with shared risk.
4. Septagon Services (Maintenance & Repair): Comprehensive maintenance, repair, renovation and expansion services. Self-performing concrete, carpentry and steel erection crews provide greater control, quality and accountability.
5. Multi-Site Construction Management: Coordination and management of multiple-location projects requiring consistent brand identity while meeting requirements of each location. Handles complex relationships, equipment procurement, code requirements and jobsite safety.
6. Roofing Services: Commercial and industrial roofing services including re-roofing, repair and replacement. Uses thermal imaging for evaluation and provides solutions meeting LEED and ENERGY STAR Cool Roof standards.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Septagon Construction Company delivers integrated commercial, industrial, and institutional construction services through design-build, general contracting, construction management, and pre-engineered Butler steel building construction. The company self-performs concrete, steel erection, and carpentry trades and also provides commercial/industrial roofing (including thermal imaging evaluation and re-roofing), multi-site program management, project development, architectural design, and ongoing maintenance/repair services via its Septagon Services division.

Product overview

Septagon Construction Company is a full-service commercial, industrial, and institutional construction company offering integrated construction services. The company operates a unified service model where design-build, general contracting, and construction management capabilities are delivered through their own in-house teams including concrete, steel, and carpentry crews. Their core service portfolio includes Design-Build Construction, General Contracting, Steel Buildings (as a certified Butler Builder), Construction Management, Roofing Services, Multi-Site Construction Management, Project Development, Architectural Design, and Septagon Services for ongoing maintenance and repairs. These services work together as a single-source construction partner model, with the ability to serve clients from initial design through project delivery and ongoing facility maintenance.

Differentiator

Problem solved

Functional benefit

Brands

• Septagon Services: Comprehensive maintenance, repair, renovation and expansion services for buildings

Products and services

• Design-Build Construction Design-build construction services providing a single experienced team from start to finish, delivering a seamless construction process from design through project delivery. Self-performing concrete, steel and carpentry crews are included. Targets commercial, industrial, and institutional customers in the Midwest.
• General Contracting General contracting services involving extensive pre-construction planning, accurate estimates, competitive or negotiated bids, subcontractor selection, and project schedule management. Septagon analyzes drawings, reviews scope, collects subcontractor quotes, and factors overhead and profit. Selection via competitive or negotiated bid.
• Steel Buildings (Butler Buildings) Pre-engineered steel building construction delivered as a certified Butler Builder, backed by over 100 years of Butler quality and innovation for commercial, industrial, and institutional facilities. Includes access to the MR-24 standing-seam roof system (3+ billion sq ft installed worldwide) and is erected up to 20% faster than conventional buildings.
• Construction Management Construction management services representing the owner's interests with oversight from planning through completion, managing project budget, job site safety, and quality control. Can serve as agent or construction manager with shared risk.
• Roofing Services Commercial and industrial roofing solutions including thermal imaging evaluations, roof repairs, and re-roofing services for flat, metal, and membrane roof types. Solutions comply with LEED and ENERGY STAR Cool Roof standards and provide virtually maintenance-free roofing.
• Multi-Site Construction Management Multi-location project management coordinating consistent brand identity while meeting requirements of each location. Handles complex relationships, equipment procurement, code navigation, and job site safety oversight for enterprise rollouts.
• Project Development Comprehensive project development services from initial stages through completion, serving as advisor, designer, investor, or contractor. Includes site evaluation, preliminary plans, budgeting, and financing assistance.
• Architectural Design Comprehensive design services including experienced architects, engineers, interior designers, and drafting professionals working from concept through construction for budgeting efficiency and project quality.
• Septagon Services (Maintenance, Repair, Renovation, Expansion) Comprehensive maintenance, repair, renovation, and expansion services for existing buildings delivered via self-performing concrete, carpentry, and steel erection crews. Includes building repairs, small projects, remodeling, roof repairs, and annual inspections.

Quantifiable outcome

• MR-24 roof system has more than 3 billion square feet installed worldwide
• +2 more outcomes

Named customers21 records

Segments9 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Two partnerships are on record, tiered core and support.

• Butler ManufacturingcoreStrategic or Co-development PartnerSeptagon is a certified Butler Builder with exclusive access to Butler steel building systems. Butler has over 120 years of building innovation history. Septagon designs and builds with premium Butler steel buildings backed by Butler quality and innovation. Butler provides pre-engineered steel building systems, including the MR-24 roof system (most specified standing-seam roof system with 3+ billion sq ft installed worldwide).
• Country Crossroads CounselingsupportStrategic or Co-development PartnerMental health and wellness partnership providing employee assistance program. Septagon partnered with Country Crossroads Counseling for their 'My Company Cares' program to support employee mental health and well-being. The program includes professional counseling access with co-pay reimbursement for employees and their families.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Tarlton Corporation: St. Louis-based commercial/industrial GC founded in 1946 (comparable vintage to Septagon). Operates design-build, CM, and general contracting with self-performing crews — directly mirrors Septagon's mid-Missouri base and service mix.
• JE Dunn Construction: Kansas City-based commercial general contractor founded in 1924 with comparable Midwest roots. Operates across industrial, healthcare, education, and government segments with self-performing crews — directly comparable in size, geography, and service mix to Septagon but at materially larger scale.
• McCarthy Building Companies: St. Louis-headquartered employee-owned GC founded in 1894 with strong Midwest presence and similar commercial/industrial/institutional verticals. Comparable business model (self-perform concrete/civil, design-build, CM-at-risk) and regional brand recognition, though significantly larger.
• The Weitz Company: Des Moines-based commercial/industrial GC founded in 1855 with deep Iowa/Midwest roots. Overlaps with Septagon across industrial, healthcare, education, and senior living verticals; comparable design-build delivery model and self-performing capabilities. Direct geographic competitor.
• Korte Construction: St. Louis-based design-build GC founded in 1938 and a fellow certified Butler Builder — the most direct analog for Septagon's Butler steel-building differentiation. Similar employee-owned structure, comparable Midwest footprint, and overlapping federal/government/institutional client base.
• Clune Construction: National employee-owned commercial GC with Midwest offices. Comparable corporate culture (employee-owned, customer-focused) and similar service portfolio across commercial interiors, healthcare, and mission-critical facilities. Differentiated by national scale vs. Septagon's regional focus.

Broad incumbents

• Walsh Group / Walsh Construction: Chicago-based national GC with substantial Midwest operations. Family-owned with similar privately-held ownership profile to Septagon; overlaps on commercial, healthcare, and education verticals across the same regional territory at materially larger scale.
• Burns & McDonnell: Kansas City-based employee-owned engineering/construction firm with 100% employee ownership (mirroring Septagon's structure). Competes directly across industrial, commercial, and government verticals in Missouri/Iowa, with broader capability set spanning engineering and EPC.
• Mortenson Construction: Minnesota-headquartered national GC with strong Midwest commercial, healthcare, and institutional presence. Larger and broader in scope, but competes with Septagon in core target verticals (industrial, healthcare, government) across the upper Midwest.

Others

• Yates Construction: Mid-size commercial GC operating in Midwest/South with self-performing structural capabilities. Adjacent peer — useful for benchmarking industrial-grade steel erection and concrete self-perform economics relevant to Septagon's Butler-built product line.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/septagon
• LinkedInlinkedin.com/company/septagon-construction

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 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 Septagon Construction