Grunloh Building, Inc.
Grunloh Building, Inc. is a second-generation, family-owned commercial construction contractor founded in 2005 in Effingham, Illinois, delivering design-build, general contracting, and construction management services to commercial, education, industrial, and municipal clients across more than a dozen U.S. states.
- Company typePrivate
- Founded2005
- HeadquartersEffingham, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Grunloh Building, Inc. does
Grunloh Building, Inc. is a second-generation, family-owned commercial construction contractor founded in 2005 and headquartered in Effingham, Illinois. The firm delivers general contracting, design-build, and construction management services across four market verticals: Commercial (retail, healthcare, financial, restaurant), Education (K-12 and higher-ed facilities), Industrial (manufacturing, processing, pre-engineered metal buildings), and Municipal (water/wastewater treatment, public safety, civic buildings). Projects have been executed across more than a dozen U.S. states despite a single-office footprint.
The company's core technical capabilities span pre-engineered metal building construction, masonry and structural steel work, wood-frame construction, renovation and tenant improvement, and complex industrial and municipal infrastructure projects. Its design-build delivery method — in which design and construction are contracted under a single agreement — is positioned as the firm's primary and fastest-growing service line. The organization is led by a Grunloh-family executive team (CEO Andrew Grunloh, President Patrick Grunloh, Financial Controller Rachel Grunloh) supported by an Office Manager and approximately 18 named Project Delivery team members.
Grunloh operates a direct-to-client, relationship-driven go-to-market model. Project acquisition occurs through competitive bidding, RFP responses for public-sector work, and referrals from repeat enterprise clients including Heartland Dental, Peoples State Bank, John Boos, Barry Callebaut, Starbucks, Verizon, AT&T, and Lake Land College. Revenue is generated project-by-project: design-build and general contracting engagements are typically fixed-price one-time contracts, while construction management engagements are cost-plus contracts (held directly by the client) with percentage or fixed-fee markups. The firm markets primarily through its project portfolio website and direct client inquiries via phone, with no disclosed paid marketing or distribution partner network.
Grunloh Building, Inc. firmographics
Firmographics- Name
- Grunloh Building, Inc.
- Legal name
- Grunloh Building, Inc.
- Website
- https://grunlohbuilding.com
- Company type
- Private
- Founded year
- 2005
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Grunloh Building, Inc. is a second-generation, family-owned commercial construction contractor founded in 2005 in Effingham, Illinois, delivering design-build, general contracting, and construction management services to commercial, education, industrial, and municipal clients across more than a dozen U.S. states.
- Ownership category
- akta.pro rank
Grunloh Building, Inc. industry classification
Industry- Product category
- Commercial Construction Services
- NAICS
- Nonresidential Building Construction (2362), Commercial and Institutional Building Construction (236220), Industrial Building Construction (23621)
- SIC
- General Bldg Contractors - Nonresidential Bldgs (1540), Operative Builders (1531)
- akta.pro primary industry
- Construction Management (Agency/Owner’s Rep) (IMAFAAAC)
- akta.pro secondary industry
- Metal Building Systems (PEMB) (IMADACAB)
Keywords
Where Grunloh Building, Inc. is headquartered
LocationHeadquarters
- HQ city
- Effingham
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Grunloh Building, Inc. business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Marketing or Sales
Revenue model
- General Contracting Services: Traditional general contracting services where Grunloh Building serves as the prime contractor, managing trade partners and delivering construction projects for clients who bring their own design teams. Revenue is earned through competitive bidding and negotiated contracts on a per-project basis.
- Design-Build Services: Integrated design and construction services under a single contract, providing seamless collaboration between design and construction teams. This is described as the fastest-growing construction delivery method in the US and represents a primary revenue stream for the company.
- Construction Management: Cost-plus construction management services where contracts are held directly by the client. Grunloh Building manages all project work while providing transparency in costs, typically used for publicly funded projects. Revenue is earned as a percentage markup or fixed fee on actual construction costs.
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
Grunloh Building, Inc. product offering
Product offeringCore offering
Grunloh Building, Inc. is a family-owned commercial construction contractor delivering general contracting, design-build, and construction management services across commercial, education, industrial, and municipal markets. Projects range from pre-engineered metal buildings and structural steel construction to tenant improvements, renovations, and complex industrial and municipal infrastructure. The company self-describes as taking a relationship-first, solution-oriented approach, serving clients across over a dozen U.S. states from its Effingham, Illinois headquarters.
Product overview
Grunloh Building, Inc. is a second-generation, family-owned commercial construction contractor founded in 2005. The company operates as a single unified construction service offering three interconnected delivery methods: Design-Build Services (the primary and fastest-growing method with design and construction under one contract), General Contracting Services (partnering with client design teams), and Construction Management Services (cost-plus contracts with high transparency for publicly funded projects). These services are applied across four distinct market segments: Commercial Construction (retail, healthcare, banks, restaurants), Education Construction (schools, colleges), Industrial Construction (manufacturing, processing facilities), and Municipal Construction (water treatment, government facilities). Projects span over a dozen states with a relationship-first, solution-oriented approach.
Differentiator
Problem solved
Functional benefit
Products and services
- Design-Build Services A construction delivery method in which both design and construction services are included under a single contract, creating a seamless flow of collaboration between design and construction teams. Provides a full-service approach that prioritizes creativity and ingenuity while maintaining time and cost efficiency.
- General Contracting Services Construction services for clients who already have a design team and seek a construction company to partner with them. Grunloh Building works hand-in-hand alongside the design team, leveraging relationships with trade contractors to complete projects of superior quality through competitive bidding and negotiated contracts.
- Construction Management Services A cost-plus service in which contracts are held directly by the client. Provides a high level of transparency, typically required for publicly funded projects, ensuring efficient communication between design and construction teams and allowing transparent management of project costs.
Companies that use Grunloh Building, Inc.
Customer profileNamed customers18 records
Segments4 records
Ideal customer profiles4 records
Grunloh Building, Inc. technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Grunloh Building, Inc. partnerships and signals
Strategic signalScale indicators2 records
Recent moves6 records
Expansion highlights4 records
Grunloh Building, Inc. competitors and assessment
Company assessmentBroad incumbents
- Swinerton: National commercial GC with established design-build delivery across retail, healthcare, and multi-family — competes for national-brand rollout work (Starbucks, AT&T, Verizon) that Grunloh currently performs.
- Gilbane Building Company: National privately held construction firm offering integrated design-build and CM services across commercial, education, healthcare, and public sectors — overlaps with Grunloh but at national scale.
- McCarthy Building Companies: Large national employee-owned GC with strong industrial, healthcare, education, and public-sector practices; competes for the same design-build and municipal bid opportunities as Grunloh.
- Turner Construction Company: Largest U.S. commercial construction manager with broad nonresidential, education, healthcare, and industrial capabilities; sets the competitive ceiling for design-build and CM pricing in Grunloh's bid markets.
Direct peers
- Skender Construction: Chicago-based commercial design-build and general contractor serving corporate, healthcare, education, and senior-living clients — overlapping with Grunloh's commercial and education verticals and design-build delivery.
- Walsh Construction: Large Midwest general contractor delivering commercial, healthcare, education, and municipal projects with integrated design-build capabilities — a step-up scale competitor targeting similar regional bid pools.
- Pepper Construction: Mid-size Midwest-focused commercial construction firm offering general contracting, design-build, and construction management across commercial, education, healthcare, and industrial sectors — closely matching Grunloh's vertical mix and delivery model.
- Leopardo Companies: Family-influenced Midwest commercial GC providing design-build, general contracting, and construction management with comparable headcount and a similar multi-vertical commercial/industrial/healthcare footprint.
Regional players
- Altorfer Inc. Central Illinois-based industrial contractor with overlapping pre-engineered metal building, industrial, and commercial capabilities — direct geographic competitor for the same Effingham-area bid pool.
- F.A. Wilhelm Construction: Indiana-based construction manager and general contractor specializing in industrial, healthcare, education, and commercial projects — comparable Midwest regional competitor with similar service lines.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Grunloh Building, Inc. social profiles
Digital presenceGrunloh Building, Inc. financial estimates
Financial estimateRevenue estimate
Valuation estimate
Grunloh Building, Inc. leadership team
Management profileNumber of profiles
Profiles5 records
Grunloh Building, Inc. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Grunloh Building, Inc. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Grunloh Building, Inc.
What does Grunloh Building, Inc. do?
Grunloh Building, Inc. is a family-owned commercial construction contractor delivering general contracting, design-build, and construction management services across commercial, education, industrial, and municipal markets. Projects range from pre-engineered metal buildings and structural steel construction to tenant improvements, renovations, and complex industrial and municipal infrastructure. The company self-describes as taking a relationship-first, solution-oriented approach, serving clients across over a dozen U.S. states from its Effingham, Illinois headquarters.
Is Grunloh Building, Inc. a public or private company?
Grunloh Building, Inc. is a private company. It is classified as family owned and is currently operating.
When was Grunloh Building, Inc. founded?
Grunloh Building, Inc. was founded in 2005. It employs 11 to 50 people.
Where is Grunloh Building, Inc. based?
Grunloh Building, Inc. is headquartered in Effingham, United States, in the North America region.
How does Grunloh Building, Inc. make money?
Three revenue lines are on record. General Contracting Services are the primary driver. The others are design-Build Services and construction Management.
Who are Grunloh Building, Inc.'s main competitors?
Broad incumbents on record are Swinerton, Gilbane Building Company, McCarthy Building Companies and Turner Construction Company. Direct peers are Skender Construction, Walsh Construction, Pepper Construction and Leopardo Companies. Regional players are Altorfer Inc. and F.A. Wilhelm Construction.
Does Grunloh Building, Inc. have an API?
No public API is recorded for Grunloh Building, Inc..
What industry is Grunloh Building, Inc. in?
Grunloh Building, Inc.'s product category is Commercial Construction Services. Its primary akta.pro industry code is IMAFAAAC, Construction Management (Agency/Owner’s Rep), with a secondary code of IMADACAB, Metal Building Systems (PEMB). Its NAICS code is 2362 and its SIC code is 1540.