CJ Lehrer & Sons in Baltimore: A Licensed Electrician for Residential Panel Upgrades and Code-Required Work
CJ Lehrer & Sons is a Baltimore-based licensed electrical contractor specializing in residential work, particularly panel upgrades, service replacements, and permit-required installations. The firm operates as a single-owner operation with deep roots in the city, handling jobs that demand a licensed electrician and municipal inspection, distinguishing it from unlicensed handymen or online referral services that may field less experienced crews.
What CJ Lehrer & Sons actually does
The company holds a Maryland electrical license and performs work that requires state licensing: panel upgrades (often necessary in older Baltimore rowhouses with outdated 60-amp or 100-amp service), new circuit installations, service replacements, and code-compliant work that the city of Baltimore inspects before sign-off. This is not general handyman work. CJ Lehrer handles jobs where permit applications, electrical code compliance, and inspection are mandatory conditions of the work, not optional add-ons.
Services and pricing
The firm charges a service call fee (typically $75 to $95, though confirmation is needed as rates fluctuate) to diagnose the problem and provide a written estimate. Panel upgrades in Baltimore, depending on whether the job involves new wiring, service line evaluation, and utility company coordination, generally run $1,500 to $3,500 for a 200-amp replacement. Simple circuit additions run $200 to $500 per circuit. Emergency calls after hours incur a surcharge. The company works with Baltimore's permitting process and factors permit and inspection costs into estimates.
How it compares to other Baltimore electricians
CJ Lehrer & Sons differs from national chains like Mr. Electric or Mister Sparky by operating as an independent, locally licensed operator without franchise overhead or online lead-generation markups. It also differs from part-time or unlicensed workers advertising on Nextdoor or Craigslist: licensing, insurance, and code-compliant work are verifiable. For homeowners choosing between CJ Lehrer and larger firms like Bates Electric or Heidler Electric (both established in the region), the trade-off is typically direct access to the owner versus larger crews with faster response times; CJ Lehrer suits those prioritizing a single point of contact over same-day scheduling.
Who it suits and who it does not
CJ Lehrer is the right fit for Baltimore homeowners who need licensed, inspectable electrical work: panel upgrades before adding central air, service upgrades to support EV charger installation, rewiring projects, or permit-required work triggered by a home sale or renovation loan requirement. It is not suitable for minor repairs like replacing outlets or light fixtures (where a handyman will suffice) or for customers who need next-day emergency service; independent operators have limited availability outside standard hours.
What the first visit involves
A technician will visit the property, inspect the current electrical service, evaluate the scope of work, and provide a written estimate that includes labor, materials, permits, and inspection fees. If the job is routine (like a simple panel upgrade), turnaround from estimate to scheduling is usually one to two weeks. For complex work or jobs requiring utility coordination, that window extends. Homeowners should expect a professional to ask questions about future plans (adding circuits, installing heat pumps, etc.) so the work is sized correctly; an undersized upgrade means returning in five years.
Hours, parking, and logistics
CJ Lehrer operates Monday through Friday, 8 a.m. to 4:30 p.m., with limited availability for emergency calls outside these hours; verify current hours before scheduling. There is no public office; the company dispatches to job sites. Payment typically requires a deposit (usually 50 percent) upon estimate approval, with the balance due upon completion and inspection sign-off. For Baltimore neighborhoods like Canton, Federal Hill, or Hampden where on-street parking is tight, plan to discuss parking logistics when scheduling.
CJ Lehrer & Sons has established itself as the choice for Baltimore homeowners who need licensed electrical work they can rely on and inspect, without the corporate overhead or impersonal scheduling that larger firms impose.

