David Mancini & Sons

What David Mancini & Sons does

David Mancini & Sons Inc. (DMSI) is a family-owned, Pompano Beach, Florida-based underground utility construction contractor founded in 1975. The company provides design-build services for municipal water, sanitary sewer, and stormwater infrastructure across South Florida, specializing in densely populated urban environments. Its core service portfolio spans five integrated lines: Design Build project delivery, Transmission and Distribution Mains, Horizontal Directional Drilling (HDD) and microtunneling, Pump Station construction, and Industrial Underwater Diving.

Differentiating technical capabilities center on trenchless methods — particularly Horizontal Directional Drilling and microtunneling — that allow pipeline installation beneath existing roads, buildings, and environmentally sensitive areas without open-cut excavation. The company supports both design and execution phases, enabling integrated design-build delivery for potable water, sanitary sewer, and stormwater assets, as well as pump stations and treatment-facility components.

DMSI generates revenue through project-based, fixed-bid contracts awarded via public procurement by municipal and state clients. Its go-to-market is enterprise field sales targeting municipal public works departments and government agencies such as the City of Miami Beach and the Florida Department of Transportation, with no channel, reseller, or subscription model. Revenue is one-time per project, quote-driven, and not publicly disclosed. The firm operates from three South Florida offices, employs 51-100 people, has no parent company, no subsidiaries, no external funding, and is privately held by the Mancini family.

Name

David Mancini & Sons

Legal name

David Mancini & Son Inc.

Website

https://dmsi.co

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

51–100 employees

Short description

David Mancini & Sons Inc. (DMSI) is a family-owned South Florida underground utility contractor delivering design-build water, sewer, and stormwater infrastructure — including HDD, pump stations, and industrial underwater diving — to municipal and state government clients.

Ownership category

akta.pro rank

Headquarters

HQ city

Pompano Beach

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Infrastructure Construction Services: Project-based construction contracts for municipal underground utilities including water mains, sanitary sewers, stormwater systems, and pump stations. Revenue is earned through one-time project fees for design-build, HDD, transmission/distribution mains, and pump station construction.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

David Mancini & Sons Inc. (DMSI) is an underground utility construction contractor that builds and maintains water, sanitary sewer, and stormwater infrastructure for municipal clients across South Florida. Its service portfolio comprises Design-Build delivery, Transmission and Distribution Mains installation, Horizontal Directional Drilling (HDD) for trenchless pipeline installation, Pump Station construction, and Industrial Underwater Diving services. The company operates from its Pompano Beach headquarters with satellite offices in Coral Gables and Fort Lauderdale.

Product overview

DMSI operates as a single unified service offering focused on underground utility construction, not a software platform. The core portfolio consists of five integrated service lines: Design Build (project delivery method), Industrial Underwater Diving, Transmission and Distribution Mains, Horizontal Directional Drilling (HDD), and Pump Stations. These services collectively enable the company to deliver turn-key infrastructure projects including potable water, sanitary sewer, and stormwater systems. The services are often combined in projects, with Design Build serving as the project delivery methodology for the other specialized construction services.

Differentiator

Problem solved

Functional benefit

Products and services

• Design-Build Integrated design-build contracting service that combines engineering design and construction under one contract for potable water, sanitary sewer, and stormwater infrastructure projects, saving owners time and money while enabling innovation in facility delivery for municipal clients.
• Transmission and Distribution Mains Installation of large-diameter transmission water mains and distribution pipelines for potable water, sanitary sewer, and stormwater systems serving municipal clients.
• Horizontal Directional Drilling (HDD) Trenchless method of installing underground pipelines that minimizes surface disruption, beneficial for environmentally sensitive areas or locations where traditional open-cut excavation is impractical, used for potable water, sanitary sewer, and stormwater infrastructure.
• Pump Stations Complete pump station design and construction services for water, wastewater, and stormwater management systems serving municipal clients.
• Industrial Underwater Diving Specialized underwater construction, inspection, maintenance, and repair services for aquatic infrastructure projects.

Quantifiable outcome

• Project completed 3 months ahead of schedule (City of Miami Beach project)
• +1 more outcomes

Named customers3 records

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• NexaWave Digital, LLCminorOthersDigital agency that created the company's website. Provides web development and digital services. This is a vendor relationship for marketing collateral rather than a strategic business partnership.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Lanzo Construction Company: Florida-based specialty contractor focused on underground utility construction including water mains, sewer systems, and pump stations. Closely comparable in geography, service mix, and municipal customer base to DMSI.
• Oscar Renda Contracting: Heavy civil and underground utility contractor performing water, sewer, and pipeline construction for municipalities. Comparable project types, public-sector customer base, and turn-key underground utility delivery model.
• Felix Construction: Underground utility contractor performing water, sewer, and stormwater installation including HDD and pump station work. Directly comparable in services and target customer type to DMSI.
• Murphy Pipeline Contractors: Specialty contractor offering trenchless pipeline rehabilitation and new installation for water, sewer, and stormwater utilities. Direct overlap with DMSI's HDD and underground utility construction services.
• SJ Louis Construction: National specialty contractor specializing in horizontal directional drilling and open-cut utility installation for water, sewer, and stormwater. Comparable trenchless technology capability and municipal customer focus to DMSI.
• Mears Group: Specialty contractor providing horizontal directional drilling, pipeline construction, and underground utility services across the U.S. Directly comparable trenchless technology and pipeline installation offering to DMSI.

Broad incumbents

• Insituform Technologies (Aegion): Larger infrastructure services provider offering trenchless pipeline rehabilitation and water/wastewater solutions. Overlaps with DMSI in underground utility and trenchless technology categories, but at broader portfolio scale.
• Garney Construction: National design-build contractor specializing in water and wastewater pipeline, pump station, and treatment plant construction. Overlaps with DMSI's core service lines at significantly larger scale.

Regional players

• Reynolds Construction: Underground utility and pipeline contractor serving the southeastern U.S., with capabilities in water, sewer, and HDD. Comparable project types and customer segment, with broader geographic reach than DMSI.
• T.G. Utilities (Ritchie Brothers / Texas Sterling): Underground utility contractor focused on water, wastewater, and stormwater pipeline installation in the southern U.S. Comparable service mix to DMSI with similar municipal contract profile, but operating in different states.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

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 David Mancini & Sons