P. Flanigan & Sons, Inc.

What P. Flanigan & Sons, Inc. does

P. Flanigan & Sons, Inc. is a Baltimore-based, family-owned heavy civil construction contractor founded in 1885 by Irish immigrant Patrick Flanigan and now led by fifth-generation President Pierce Flanigan IV. The company delivers transportation infrastructure construction, maintenance, and improvement services across Maryland, southeastern Pennsylvania, and Delaware — spanning city streets, state highways, airport runways, seaport facilities, and institutional campuses. Core service lines include asphalt paving, concrete construction, milling, site development, and utility installation, supplemented by seasonal snow removal for airports, ports, and surrounding jurisdictions.

The business is vertically integrated through owned material production assets. Two state-certified asphalt plants — Monroe Street (350 tons/hour, 225,000–300,000 tons annually) and Westport (400 tons/hour, 325,000–400,000 tons annually) — produce DOT-approved hot mix, warm mix, pervious mixes, and cold patch, each with an on-site AASHTO-accredited quality control laboratory. The all-electric Winchester Recycling Facility (the first state-approved crushed-concrete recycler in Maryland) processes over 250,000 tons of recycled aggregates annually, and the Perryville-based Stancills Inc. subsidiary supplies specialty aggregates for bio-retention, green roofs, and sports fields. The Principio Asphalt joint venture (opened November 2022 with York Building Products and Diamond Materials) extends this network into northern Maryland, southeastern Pennsylvania, and Delaware.

Revenue is generated through two streams: project-based heavy civil construction contracts (largely with government transportation agencies, airport and port authorities, and large institutional clients) and transaction-based asphalt and aggregate material sales from company-owned facilities operating 24/7. Go-to-market is direct enterprise field sales — bidding and contracting for government and institutional work, plus direct material sales from plant locations. The company is privately held with no external shareholders, has 251–500 employees, and has earned the NAPA Diamond Quality Commendation annually since 2010 at both major plants.

Name

P. Flanigan & Sons, Inc.

Legal name

P. Flanigan and Sons, Inc.

Website

https://pflanigan.com

Company type

Private

Founded year

1885

Operating status

Operating

Headcount range

251–500 employees

Short description

P. Flanigan & Sons is a Baltimore-based, family-owned heavy civil construction contractor serving Maryland, southeastern Pennsylvania, and Delaware. Founded in 1885, the company provides paving, concrete, site development, and utilities services while producing asphalt and aggregates from owned plants.

Ownership category

akta.pro rank

Product category

Heavy Civil Construction and Infrastructure Services

NAICS

Asphalt Shingle and Coating Materials Manufacturing (324122), Poured Concrete Foundation and Structure Contractors (23811)

SIC

Construction - Special Trade Contractors (1700), Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Refuse Systems (4953)

akta.pro primary industry

C&D Waste Collection & Hauling (BPALAJAA)

akta.pro secondary industries

Construction Debris Removal (C&D Hauling) (HSAKALAC), C&D Sorting & Processing Facilities (C&D MRFs) (EUAIAHAC)

Keywords

• Heavy civil construction
• Asphalt paving services
• Asphalt production
• Aggregate recycling
• Transportation infrastructure

Headquarters

HQ city

Baltimore

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Heavy Civil Construction Services: Infrastructure construction, maintenance, and improvement projects including transportation infrastructure, airport runways, seaport facilities, and campus infrastructure
2. Asphalt and Aggregate Material Sales: Production and sale of hot mix asphalt, crushed concrete, and aggregate products from company-owned facilities. Monroe Street plant produces 225,000-300,000 tons annually; Westport plant produces 325,000-400,000 tons annually

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

P. Flanigan & Sons is a heavy civil construction contractor that provides transportation infrastructure construction, maintenance, and improvement services including asphalt paving, concrete construction, milling, site development, and utilities installation. The company also produces and sells hot mix asphalt and recycled aggregate products from its two company-owned asphalt plants and recycling facility in the Baltimore region.

Product overview

P. Flanigan & Sons, Inc. is a heavy civil construction company that operates as a single unified business rather than a platform-plus-modules architecture. The company offers a vertically integrated portfolio of construction services and production facilities. Core construction services include asphalt paving, concrete construction, milling, site development, and utilities installation. The company operates two primary asphalt production plants (Monroe Street and Westport) and a recycling facility (Winchester), producing various asphalt mixes and aggregate products. Through acquisition and joint ventures, the company has expanded to include Stancills Inc. (specialty aggregates) and Principio Asphalt (joint venture plant serving the mid-Atlantic region). All facilities maintain AASHTO-accredited quality control laboratories and both major plants hold NAPA Diamond Quality Commendation certification.

Differentiator

Problem solved

Functional benefit

Products and services

• Asphalt Paving Services Commercial, industrial, municipal, and highway paving services including grading and paving, removal and replacement, speed humps/bumps, repairs, parking lots, and ADA upgrades.
• Concrete Construction Services Concrete services including curb and gutter installation and repair, handicap concrete ramp repair and installation (ADA compliant), concrete demolition, formwork design and installation, concrete placement and finishing, and concrete paving.
• Milling Services State-of-the-art milling machines for quick and efficient removal of asphalt concrete pavements. Leaves an even, true-to-profile base for new surface courses. Material is recycled into different materials.
• Site Development Services Site development including clearing and grubbing, demolition, grading and excavation, roadway construction, building pad construction, retaining walls, erosion and sediment controls installation, and surveying.
• Utilities Services Excavation for and installation of water lines, sewer lines, storm drain, electrical conduit and duct bank, bio-retention ponds and bio-swales, sediment ponds, and stormwater management systems.
• Snow Removal Services Snow removal capabilities for large airports and ports, as well as surrounding counties and city snow removal efforts.
• Monroe Street Asphalt Plant Asphalt production facility capable of producing 350 tons per hour, typically producing 225,000 to 300,000 tons annually. Equipped with on-site AASHTO accredited lab.
• Westport Asphalt Plant Asphalt production facility capable of producing 400 tons per hour, typically producing 325,000 to 400,000 tons annually. Equipped with on-site AASHTO accredited lab and has received NAPA Diamond Quality Commendation annually since 2010.
• Winchester Recycling Facility Recycling facility producing aggregate products including RC-2, RC-6, RC-GAB, Screened Millings, Unscreened Millings, ID-2 Sand, #8 Stone, #57 Stone, and Masonry Sand. All-electric facility with no diesel. Recycles over 250,000 tons of aggregates annually. First state-approved recycling plant in MD to produce crushed concrete.
• Asphalt Products Various asphalt mixes including D.O.T. approved hot mixes, high quality commercial and private hot mixes, warm mix asphalt options, and high spec cold patch in bulk. Products include 4.75mm, 9.5mm, 12.5mm surface mixes, 19mm and 25mm base mixes, Pervious HMA Mixes, Paver Base, Bituminous Curb Mix, Cold Mix/Cold Patch, and Tack Coat.
• Aggregate Products Recycled aggregate products including RC-2, RC-6, RC-GAB, Screened Millings, Unscreened Millings, ID-2 Sand, #8 Stone, #57 Stone, and Masonry Sand. Accepts clean concrete and millings for recycling.

Quantifiable outcome

• Zero recordable incidents objective with comprehensive Health & Safety Program reviewed regularly
• +2 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered core.

• Principio AsphaltcoreStrategic or Co-development Partner · 1 November 2022Joint venture between York Building Products, Diamond Materials, and P. Flanigan & Sons. State-of-the-art asphalt plant serving northern MD, southeast PA, and DE markets. Opened November 2022.
• Stancills Inc.coreStrategic or Co-development Partner · 1 January 2017Acquired in 2017, Stancills is an 83-year-old family-owned specialty aggregate company based in Perryville, MD. Provides bio-retention, green roofs, path mixes, sports field blends, and MD SHA topsoil and bio-retention mixes.

Scale indicators5 records

Recent moves5 records

Expansion highlights6 records

Broad incumbents

• Granite Construction Incorporated: Large publicly traded heavy civil contractor with vertically integrated materials operations across the U.S. West. Compares directly on asphalt paving, aggregate production, and government transportation contracting, though at significantly greater geographic scale.
• Martin Marietta Materials: Major U.S. producer of aggregates and asphalt mix with East Coast operations. Comparable on aggregate and HMA product lines and DOT certification requirements, though more focused on materials than construction services.
• Vulcan Materials Company: Largest U.S. producer of construction aggregates and asphalt mix. Comparable on hot mix asphalt and aggregate production capacity, customer mix (DOTs and contractors), and reliance on certified quality standards.
• Eurovia (VINCI): International road construction and materials subsidiary of VINCI with strong recycled asphalt and warm-mix capabilities. Comparable on vertically integrated road construction, HMA production, and sustainability-led product offerings.
• CRH plc (Oldcastle Materials/APAC): Global building materials giant with extensive asphalt and aggregate operations in the U.S. through legacy Oldcastle. Comparable on HMA production, recycled aggregates, and DOT-facing quality certifications.

Direct peers

• York Building Products: Mid-Atlantic building materials producer and JV partner with Flanigan in Principio Asphalt. Directly comparable on aggregate/HMA production and shared market footprint in northern MD, southeast PA, and DE.
• Allan Myers: Private, family-influenced heavy civil contractor operating in the Mid-Atlantic with asphalt plants and aggregate facilities. Highly comparable on regional focus, vertically integrated production, and DOT contract mix.
• Wagman Heavy Civil: Mid-Atlantic heavy civil contractor specializing in bridges, highways, and airport/port infrastructure. Directly comparable in target customers (state DOTs, airports, ports), service scope, and private ownership profile.
• Diamond Materials: Asphalt producer and JV partner with Flanigan in Principio Asphalt. Comparable on hot mix production scale, DOT certification, and Mid-Atlantic regional customer base.

Others

• Stancills Inc. (Predecessor): Specialty aggregate company now wholly owned by Flanigan; retained as a sub-brand. Comparable on specialty aggregates (bio-retention, green roof, sports field mixes) serving environmental and SHA-spec markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/p-flanigan-sons-inc-146113808860737
• Xx.com/pflaniganupdate
• LinkedInlinkedin.com/company/2352039

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries2 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 P. Flanigan & Sons, Inc.