Immel Construction

What Immel Construction does

Immel Construction (legal entity Howard Immel Inc.) is a full-service commercial construction firm founded in 1961 and headquartered in Green Bay, Wisconsin. The company delivers general contracting, construction management, design-build, preconstruction, cost estimating, historic restoration, industrial millwright, and pre-engineered metal building services to clients across retail, commercial, industrial, education, healthcare, municipal, hospitality, and non-profit sectors throughout the Midwest. Documented clients include Greater Green Bay YMCA, Valders Area School District, UW-Green Bay, City of De Pere, Tower Clock Eye Center, MAC Dental Center, Broadway Automotive Collision Center, and Golden House. The firm operates two Green Bay facilities: a headquarters at 2601 Development Drive (opened June 18, 2024) and an operations, warehousing, and prefabrication center at 1820 Radisson Street.

The business runs on a project-based professional services model in which revenue is generated through competitive bids and direct negotiations on contracts ranging from roughly $100K renovations to multi-million-dollar new builds. The go-to-market is direct enterprise field sales, supported by a pre-qualified subcontractor network with formal DBE/minority participation programs, local union subcontractor relationships, and industry association involvement (notably the NEW Construction Alliance). Pricing is project-specific and not publicly listed. In December 2019 the firm sold 100% of its stock to employees through an Employee Stock Ownership Plan (ESOP), aligning workforce incentives with project outcomes and long-term continuity. Leadership includes President Paul Martzke (president since 2020; 2024 Titan 100 honoree), VP Operations Brian Wetzel, VP Estimating Steve Hucek, Controller Ali Court, and Director of Risk Management Clifford Watson. Recent recognition includes the BUILD Wisconsin Award, AGC Safety Excellence Award, Wisconsin Safety Council Award, and Cornerstone Award for community impact; 2023 represented a record sales year for the firm. Revenue figures are not publicly disclosed.

Name

Immel Construction

Legal name

Howard Immel Inc.

Website

https://immelconstruction.com

Company type

Private

Founded year

1961

Operating status

Operating

Headcount range

101–250 employees

Short description

Immel Construction is a Green Bay, Wisconsin-based, 100% employee-owned commercial general contractor founded in 1961, delivering general contracting, construction management, design-build, preconstruction, millwright, historic restoration, and pre-engineered metal building services across retail, commercial, industrial, education, healthcare, municipal, and non-profit sectors in the Midwest.

Ownership category

akta.pro rank

Headquarters

HQ city

Green Bay

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Marketing or Sales

Revenue model

1. General Contracting Services: Traditional general contracting services for commercial construction projects including retail, commercial, industrial, education, healthcare, municipal, and non-profit sectors. Revenue is generated through project-based contracts where Immel serves as the primary contractor managing construction delivery.
2. Construction Management: Construction management services providing budget, schedule, and constructability input at project start. Fees are charged for preconstruction and ongoing project management services.
3. Design-Build Services: Integrated design-build project delivery with single-source responsibility partnering with architects and engineers. Revenue generated through design and construction phases.
4. Cost Estimating Services: Pre-construction cost estimating services including project analysis, risk assessment, and detailed cost projections.
5. Industrial Millwright Services: Industrial services including equipment relocation, precision alignment, plant relocation, and machinery maintenance for industrial clients.
6. Pre-Engineered Metal Buildings: Design and construction of pre-engineered metal buildings with nearly 60 years of experience in this building type.
7. Historic Restoration: Historic preservation and restoration services for landmark buildings including project estimates, scheduling, phasing, and skilled craftspeople.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Immel Construction is a 100% employee-owned commercial general contractor that delivers ground-up construction, renovation, and historic restoration projects for commercial, industrial, institutional, and municipal clients across Wisconsin. Its service portfolio spans general contracting, construction management, design-build delivery, preconstruction planning and cost estimating, historic restoration, industrial millwright work, and pre-engineered metal building construction, supported by a self-performing craft workforce.

Product overview

Immel Construction is a full-service commercial construction firm offering a comprehensive portfolio of construction services. The core offerings include General Contractor services, Construction Management, Design-Build, Preconstruction Services, Cost Estimating, Historic Restoration, Industrial & Millwright Services, and Pre-Engineered Metal Buildings. These services work together to provide end-to-end construction solutions from initial feasibility through project completion, serving sectors including retail, commercial, industrial, education, healthcare, municipal, and non-profit throughout the Midwest.

Differentiator

Problem solved

Functional benefit

Products and services

• General Contracting Traditional lump-sum or competitive-bid general contracting for commercial building projects, delivered through self-performing craft labor and subcontracted specialty trades for commercial, institutional, industrial, and municipal clients.
• Construction Management Agency or at-risk construction management services covering schedule, cost, quality, and trade coordination for commercial construction projects.
• Design-Build Delivery Single-source design and construction delivery in which Immel coordinates design partners and construction execution under one contract for commercial owners.
• Preconstruction and Cost Estimating Front-end planning services including feasibility input, budgeting, constructability review, scheduling, and detailed cost estimating to support owner decision-making before construction begins.
• Historic Restoration Specialty restoration, preservation, and renovation services for historically significant commercial and institutional buildings.
• Industrial and Millwright Services Industrial construction, equipment installation, rigging, and maintenance support services for manufacturing and industrial facilities.
• Pre-Engineered Metal Building Construction Design, supply, and erection of pre-engineered metal building systems for commercial, industrial, and institutional clients.

Quantifiable outcome

• Record sales year achieved in 2023 under President Paul Martzke's leadership
• +3 more outcomes

Named customers9 records

Segments8 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered minor and core.

• NEW Construction Alliance (Northeastern Wisconsin Construction Alliance)minorStrategic or Co-development PartnerImmel Construction is part of the NEW Construction Alliance, an emerging association of employers in construction trades collaborating with educators, workforce development, economic development, and government to promote careers in the building and construction trades in the NEW North. Currently 12 companies comprise the group. Modeled after the Northeastern Wisconsin Manufacturing Alliance.
• Local Union SubcontractorscoreStrategic or Co-development PartnerImmel Construction maintains strong union partnerships with local union subcontractors. Union craftsworkers provide heightened standards in safety, quality of work, and experience. Hiring local union subcontractors supports the people that live in the communities where Immel operates.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Miron Construction: Wisconsin-based commercial general contractor serving the Midwest with similar services (general contracting, construction management, design-build) across industrial, commercial, healthcare, and education verticals. Closest comparable by geography, size, and service mix.
• J.H. Findorff & Son: Madison, Wisconsin-based commercial general contractor serving education, healthcare, corporate, and senior living clients with construction management, design-build, and general contracting services. Directly overlaps Immel's Wisconsin footprint and vertical mix.
• Kraus-Anderson: Minneapolis-based construction company with full commercial general contracting, construction management, and real estate development services across the Upper Midwest. Comparable in scale and Midwestern regional concentration.
• The Boldt Company: Wisconsin-headquartered, employee-owned construction firm offering general contracting, design-build, and preconstruction across commercial, healthcare, industrial, and power markets. Highly comparable as a regional Midwest GC with a similar ownership-driven culture.
• C.G. Schmidt: Milwaukee-based construction manager and general contractor serving commercial, healthcare, education, industrial, and multi-family clients in Wisconsin and the Midwest. Comparable size and service offering to Immel.
• Berghammer Construction: Butler, Wisconsin-based commercial construction firm offering design-build, construction management, and general contracting services across corporate, healthcare, education, and industrial sectors. Comparable Wisconsin-headquartered Midwest GC.
• The Weitz Company: Des Moines, Iowa-based employee-owned commercial general contractor with national reach, serving commercial, industrial, healthcare, and government markets. Comparable employee-ownership model and Midwest roots, with somewhat larger scale.

Regional players

• Hoffman Construction: Pacific Northwest-headquartered general contractor with growing presence in the Upper Midwest (including Wisconsin). Comparable in serving industrial, healthcare, and education clients, but with primary geographic focus in the West.

Broad incumbents

• Mortenson Construction: Major national general contractor with strong commercial, healthcare, energy, and civil practices and significant Midwest operations. Competes in overlapping segments at a substantially larger scale than Immel.
• Gilbane Building Company: Large, privately held national construction manager and general contractor with deep commercial, healthcare, education, and public-sector practices. Operates in the Midwest among many regions, offering overlapping capabilities as a much larger incumbent.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/immelconstruction
• LinkedInlinkedin.com/company/immel-construction
• Instagraminstagram.com/immelconstruction

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 Immel Construction