G Wiemann Construction, Inc.

What G Wiemann Construction, Inc. does

G Wiemann Construction, Inc. is a private, founder-led general contractor and concrete specialist headquartered in Paso Robles, California, founded in 2011 by Greg Wiemann as the successor to Nick E. Pokrajac, Inc. The company operates three core service lines: general contracting (covering commercial, residential, and light industrial sectors, often delivered through an integrated design-build methodology), specialized winery construction (fermentation buildings, barrel storage, tank farms, wastewater treatment, and wine caves, primarily in the Paso Robles wine region), and structural concrete construction (deep foundations, retaining walls, slabs, bridge decks, and complex custom concrete structures). Underlying capability is craft-based rather than technology-based — concrete construction expertise, project management, and local regulatory familiarity (CA Contractor License #957102) — with no proprietary software, APIs, or AI components disclosed.

The business model is project-based, one-time engagement with quote-driven, customized pricing per engagement. G Wiemann generates revenue either as the primary General Contractor managing full project delivery or as a specialized concrete Subcontractor to other GCs, giving it two complementary go-to-market motions. The company sells directly through a sales-led motion to enterprise and mid-market clients in Santa Barbara, San Luis Obispo, and Monterey counties, leveraging the founder's local relationships, a project-portfolio website, LinkedIn/Facebook presence, and community sponsorships as primary marketing channels. Named customers include J Lohr, Gallo, Meridian, Trinchero Family Estates, Beringer, Daou, Epoch, Robert Hall, and Austin Hope — concentrated in the wine industry with adjacent commercial exposure. The company has no outside funding, no subsidiaries, and operates with 1-10 employees, defining it as a small specialty regional contractor rather than a scaling enterprise.

Name

G Wiemann Construction, Inc.

Legal name

G Wiemann Construction, Inc.

Website

https://gwiemann.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

1–10 employees

Short description

G Wiemann Construction is a Paso Robles, California-based general contractor and concrete specialist serving wineries, commercial, residential, and light industrial clients across the Central Coast (Santa Barbara, San Luis Obispo, and Monterey counties) on a project-based, design-build model since 2011.

Ownership category

akta.pro rank

Product category

General Contracting & Construction Services

NAICS

Nonresidential Building Construction (2362), Commercial and Institutional Building Construction (23622), Poured Concrete Foundation and Structure Contractors (23811), Industrial Building Construction (23621)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Construction - Special Trade Contractors (1700), General Bldg Contractors - Residential Bldgs (1520), Operative Builders (1531)

akta.pro primary industry

Self-Performing General Contractors (IMAFAAAI)

akta.pro secondary industries

Commercial General Contracting (New Build) (IMAFAAAA), Residential General Contracting (New Build) (IMAFAAAB), Food & Beverage Processing Plant Construction (IMAFADAH), Public Works General Contracting (IMAFAAAG)

Keywords

• General contracting services
• Winery construction
• Concrete construction
• Commercial construction
• Design-build services

Headquarters

HQ city

Paso Robles

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. General Contracting Services: Project-based revenue from comprehensive general contracting services covering commercial, residential, and light industrial sectors. Services include project planning, development, construction, and management.
2. Concrete Construction Services: Specialized concrete construction services offered as primary General Contractor or specialized Subcontractor. Revenue generated through project-based contracts for concrete work including foundations, slabs, retaining walls, and complex concrete structures.
3. Winery Construction Services: Specialized winery construction and retrofitting services including barrel storage buildings, fermentation facilities, tank farms, wastewater treatment systems, and wine caves. Project-based revenue with time-sensitive scheduling around harvest cycles.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

G Wiemann Construction, Inc. is a licensed general contractor and concrete specialist serving California's Central Coast. The company delivers general contracting, specialized winery construction, and structural concrete services for commercial, residential, light industrial, and public works projects across Santa Barbara, San Luis Obispo, and Monterey counties. Services are offered either as primary General Contractor or as a specialized concrete Subcontractor.

Product overview

G Wiemann Construction, Inc. is a local general contractor and concrete specialist serving the Central Coast of California. The company operates as a single unified construction services business with three core service lines: General Contracting (encompassing design-build, project planning, commercial, residential, and light industrial construction), Wineries (specialized wine industry construction), and Concrete (structural concrete services). These services are offered either as primary General Contractor or as specialized concrete Subcontractor, serving Santa Barbara, San Luis Obispo, and Monterey counties. The company was founded in 2011 and has particular expertise in winery construction spanning over 30 years.

Differentiator

Problem solved

Functional benefit

Products and services

• General Contracting

Named customers10 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators3 records

Recent moves4 records

Broad incumbents

• XL Construction: Northern California general contractor serving commercial, industrial, and life sciences clients. Comparable in offering design-build and self-perform capabilities similar to G Wiemann's delivery model, but with broader geographic reach.
• Truebeck Construction: California-based general contractor with strong commercial and industrial work. Comparable as a design-build California GC serving complex building scopes, though at meaningfully larger headcount and geographic footprint.
• Cahill Contractors: San Francisco Bay Area general contractor with diverse commercial and institutional work. Comparable as a California design-build GC serving complex building scopes, but operating at meaningfully larger scale than G Wiemann.
• McCarthy Building Companies: National general contractor with a recognized food and beverage / industrial process facility practice. Comparable to G Wiemann in serving winery and process-plant clients, but operates nationally with far greater resources and self-perform capabilities.
• Conco Companies: Large West Coast concrete and structural specialty contractor with capabilities spanning foundations, slabs, and complex concrete structures. Highly comparable to G Wiemann's structural concrete specialization, though Conco operates across multiple states at much greater scale.
• DPR Construction: Large national general contractor with a dedicated food and beverage / winery practice. DPR is a relevant incumbent benchmark for the kind of large-scale food and beverage plant and winery work G Wiemann tackles, though DPR operates at much greater scale across multiple regions.
• Rudolph and Sletten: California-based general contractor with deep experience in commercial, institutional, and industrial / process facility construction. Comparable as a California GC serving complex building scopes, though operating at significantly greater scale than G Wiemann.
• Swinerton: Established California-headquartered general contractor with broad commercial, industrial, and healthcare work across the West Coast. Swinerton is comparable as a regional California GC with similar vertical exposure but at significantly larger scale than G Wiemann.
• Webcor: Major California-based general contractor with diverse commercial, institutional, and residential work. Comparable in serving the same California construction market, but operating at enterprise scale across the Bay Area and beyond.

Regional players

• Soil Engineering Construction: California specialty contractor focused on concrete, foundations, and site preparation work. Comparable in offering specialized concrete and structural services in California similar to G Wiemann's concrete subcontractor model, with overlap in target scope though broader geographic spread.

Market position

Weaknesses4 records

Competitive moat4 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/g-wiemann-construction-inc
• Facebookfacebook.com/gwiemannconstruction

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 G Wiemann Construction, Inc.