Plexus Group started by taking on electrical and communications projects that required real coordination between trades — the kind most contractors prefer to split between three separate subs. We built the company on doing all of it ourselves.
Plexus Installations, Inc. was incorporated in Maryland in 1995. From the beginning, the company focused on the scope that most low-voltage contractors avoid: work that requires electrical and communications to be coordinated under one roof, on a single schedule, with one company answerable for both.
That focus built a client list that includes state transportation authorities, public school systems, university systems, transit agencies, and the contractors who build for them. Today Plexus Group is an IBEW Local 24 and 26 signatory contractor, licensed and bonded in Maryland and Virginia, with two offices and field crews active across the Mid-Atlantic Region.
We are also MDOT MBE #08-286, Virginia SWaM & DBE #652823, WMATA DBE, and MWAA LDBE certified — not as a compliance vehicle, but because the company is genuinely Minority Woman-Owned and has been since it was founded.
View Past PerformanceThese are not aspirations. They are the specific commitments clients rely on when they bring us into a project.
Fire alarm replacement in occupied dormitories with the existing system kept live and cross-tripped through zone-by-zone cutover. ITS and conduit on active toll lanes under maintenance of traffic. Stadium schedules and night shifts. Occupied and live conditions are our normal operating environment — not an exception we charge extra to tolerate.
Cut sheets, wiring diagrams, schematic drawings, and wire run lists are prepared to the specification before they leave our office. Closeout includes bidirectional OTDR test results, labeling schedules, and as-built drawings. We do not close the job until the documentation is complete.
When 26, 27, and 28 are split across three subcontractors, the seams between them are where your schedule slips and your RFIs multiply. We carry all three and coordinate them internally. Power and pathway are planned by the same team, which is where the schedule is won.
Every proposal states assumptions and exclusions up front — what is included, what is by others, and what the price is firm against. You will know what you bought before you award it. There are no surprises at the back end because we did not hide anything in the front.
Cristina founded Plexus Group in 1995 and has led the company through three decades of growth in the electrical and low-voltage contracting market. Under her leadership, Plexus has earned and maintained MBE certification in Maryland and Virginia, built an IBEW signatory workforce, and developed long-term relationships with state transportation authorities, school systems, and general contractors across the Mid-Atlantic Region.
Our project managers and field superintendents carry more than twenty years of experience each on complex technology projects in transportation, education, and government facilities. They are available not only to manage Plexus scopes, but also as a consulting resource for general contractors who need technical oversight without adding another subcontractor.
Every electrician and technician on a Plexus job site works under IBEW Local 24 (Baltimore region) or IBEW Local 26 (DC Metro region) agreements. Our field crews are trained, safety-certified, and experienced in the occupied-facility and live-corridor conditions that define our project portfolio.
Every electrician on a Plexus job site is an IBEW member. We signed agreements with IBEW Local 24 and IBEW Local 26 because we believe it produces a better outcome for the client — better-trained field crews, better safety practices, and a workforce that shows up to finish the job.
Our IBEW workforce has executed fire alarm replacement in occupied dormitories, ITS and industrial electrical on active highway corridors, and complete low-voltage packages on a 14-week school schedule. These are not environments that forgive poor field execution.
Signatory agreement covering Baltimore City, Baltimore County, Harford County, and surrounding Maryland jurisdictions.
Signatory agreement covering Washington D.C., Montgomery County, Prince George’s County, and Northern Virginia.
OSHA-trained field crews. Performance and payment bonds furnished at 100% of contract price. Prevailing wage reporting maintained.
Key identifiers for prequalification forms and procurement submissions.
| Item | Detail |
|---|---|
| Legal Name | Plexus Installations, Inc. DBA Plexus Group |
| Founded | 1995, incorporated in Maryland |
| Ownership | Minority Woman-Owned — Small Disadvantaged Woman-Owned Business |
| Federal Tax ID | 52-1922822 |
| Maryland eMMA Vendor ID | 120067 |
| MD Construction Firm License | 30682357 |
| MDOT MBE Certification | #08-286 |
| Virginia SWaM & DBE | #652823 |
| WMATA DBE | Certified |
| MWAA LDBE | Certified |
| Maryland Small Business Reserve | Active |
| IBEW | Local 24 (Baltimore) and Local 26 (DC Metro) signatory |
| Business Development | [email protected] · (410) 777-8233 |
Full NAICS listing and contract vehicles available on the Capabilities & Past Performance page.
Independent testing on every fiber strand. Certified concrete foundations on every enforcement-camera pole. Phased life safety cutover with the existing system kept live. Our quality standards are not the result of a program — they are the result of doing complex work in environments where failure has consequences.