Nothing Gets Built Until the Ground Is Ready.
That's Where We Come In.A Certified Women-Owned Site Development Contractor. Serving Greater Baltimore Since 1982.
Complete Site Construction. Start to Finish.
We self-perform every aspect of site development with our own crews and equipment. From the first pass of the dozer to the final stormwater control measure, one contractor is accountable from day one.
Grading & Excavation
Site preparation is where every project begins. Our experienced grading and excavation crews handle full site clearing, rough and finish grading, and earthwork to spec — so the next phase of your project starts on solid ground.
Underground Utilities
The work nobody sees makes everything else possible. Comer Construction installs sewer, water, and storm drain systems with the precision and equipment needed to keep your project on schedule and on budget.
Stormwater Management
Every site disturbs the land. Comer Construction implements approved erosion control and stormwater management plans to protect the surrounding environment and keep your project compliant from groundbreaking through completion.
Maintenance of Traffic
Keeping a worksite safe means managing what happens beyond the fence line too. Our MOT team provides traffic control, lane closures, and flagging services — MDOT-trained and ATSSA-certified, compliant with all federal and state standards.
My grandfather started this company with a vision — to build not just projects, but careers and a true family culture. Today we carry that same commitment into every job.
About Comer Construction
Comer Construction was founded in 1982 by J. Marvin Comer with two trucks, a loader, and a dozer. His daughter Susie was by his side from the beginning, and together they built one of Greater Baltimore’s most trusted site development contractors, built on repeat business, honest work, and a reputation that speaks for itself.
Today, Comer Construction is a certified MBE/WBE contractor with a large, modern fleet maintained entirely in-house by our own mechanics. Our award-winning safety program sets the standard on every jobsite, and our team brings the experience and equipment to handle every phase of site development.
As a third-generation family business, we bring the same values to every job that Marvin brought to the first one.
Join Our Team
Comer Construction has been a great place to work since 1982. We offer competitive wages, full benefits, and a culture where every employee is valued. Whether you’re an experienced operator or just starting out, there’s a place for you here.
Recent Updates
From featured projects and community events to awards and company news, stay up to date with what’s happening at Comer Construction.
Touch-a-Truck Rising Sun 2025
Community Fire Company of Rising Sun hosted a Touch-a-Truck on May 11, 2024 which included Comer Construction trucks and giveaways.
National Work Zone Awareness Week: Every Cone Protects a Life
Each spring, National Work Zone Awareness Week reminds us that safety on the road starts behind the wheel. At Comer Construction, it’s more than a campaign—it’s a commitment. From traffic control to MOT services, we’re proud to protect the people building Maryland’s infrastructure.
Commitment to Safety: Recap of Comer Construction’s Safety Days 2025
At Comer Construction, we believe that safety training is an ongoing commitment. Events like Safety Days not only enhance our team’s knowledge but also reinforce our culture of safety-first practices.
School Site Construction in Baltimore
Comer Construction played a key role in preparing the Maree G. Farring Elementary/Middle School in Baltimore City for renovations through site development, handling utility installations, grading, stormwater management, and curb and gutter work.
Healthcare Site Development in West Baltimore
From December 2023 to September 2024, our team handled site clearing, stormwater conveyance, paving, and landscaping to support renovations at Grace Medical Center in West Baltimore.
Site Construction for Maryland Hospital Addition
Comer Construction is proud to support the Northwest Hospital Emergency Department (ED) Addition project with specialized site construction services.
Celebrating 42 Years of Service: David A. Coblentz’s Legacy
David A. Coblentz, who will be retiring on December 31st after an incredible 42 years of service.
Honoring Charles T. Petr: Celebrating 12 Years of Dedication
Charles, our dedicated Controller, has left an indelible mark on the company with his commitment to excellence, warmth, and unwavering professionalism.
Comer Construction, Inc. is a certified women-owned site development contractor serving Harford County and the Greater Baltimore Region since 1982. MDOT MBE/WBE (#02-102) · Baltimore City WBE (#15-366678).
Contact Us
2100 Slade Lane
Forest Hill, MD 21050
410-879-6094
M-F: 6:00am – 5:00pm
Join Our Team
Comer Construction offers competitive wages, full benefits, and a workplace where you're treated like family. We're always looking for skilled people who take pride in their work.