About SMI
Building Sustainable
Environments Since 1997
From a small erosion control crew to a 200+ person full-service site development company serving five states across the Mid-Atlantic.
Our Services
A team built on decades of experience
We provide services to Builders, Developers, Commercial Contractors, State Highway, as well as Local and State Government. Our team consists of managers, estimators, and foreman that have been in the industry for over a decade, some for 29 years.
Our personnel are qualified, trained, and certified. We have a commitment to our customers as well as the environment.
Our Values
What drives us
Safety First
OSHA-compliant operations with continuous safety training. Every crew member goes home safe, every day.
Quality Driven
Rigorous quality control from mobilization through closeout. We don't cut corners — we build them right.
Sustainable Practices
Environmentally responsible methods across erosion control, stormwater management, and site restoration.
Client Commitment
Transparent communication, competitive pricing, and reliable timelines. Your project is our priority.
In the News
Featured by Komatsu
Komatsu's company-owned dealers told our story in a customer video and in Komatsu East Insider magazine: from one truck, one trailer and one machine to heavy civil work across the Mid-Atlantic.
Read the story
Our Mission
"SMI Services will continue to be the front runner in sediment and erosion controls throughout Maryland, D.C. Metro, Virginia, Delaware, and Pennsylvania areas. We are dedicated to making sure our customers have outstanding quality, competitive pricing, and professionalism using sustainable practices throughout all stages of a project from start to finish."
Our Journey
29+ years of growth
Founded by Stephen Principe as a small erosion control crew in Bowie, Maryland
Expanded into full-service site development and heavy civil construction
Opened Delaware offices, extending coverage across the Mid-Atlantic
Surpassed 3,000 completed projects milestone
200+ team members serving five states with 8 core divisions
Certifications
SMI is a federally certified VOSB (Veteran-Owned Small Business) and holds a VSBE (Veterans Small Business Enterprise) certification for the state of Maryland. We also participate in the ABC STEP Safety Program, demonstrating our commitment to quality and workplace safety.
Service Area
Operating from offices in Bowie, MD, Selbyville, DE, and Kenton, DE, we serve clients across the entire Mid-Atlantic corridor.
Our Partners
Built on relationships
None of what we do happens alone. Across 29 years, we've had the privilege of working alongside some of the most respected builders, developers, and general contractors in the Mid-Atlantic. These partnerships aren't just business — they're built on trust earned through thousands of projects delivered on time, on budget, and to the highest standard. We're proud to call them partners, and even prouder that they keep coming back.
Ready to work with us?
Get a free quote for your next project.