Panel Upgrades in Annapolis, Maryland
200-amp upgrades, heavy-ups, sub-panels, and Federal Pacific & Zinsco replacements - done to code and inspected.
DC Electrical Contractor #EM-40-0001168 · MD Master Electrician #7987 · VA Class A Contractor #2705198087 · EPA & OSHA Certified
Pirro Electric handles panel upgrades for homeowners, businesses, and property managers in Annapolis, MD. Work is scoped on site, quoted in writing, permitted, and inspected before we call it done. Typical scope: 100-amp to 200-amp service upgrades ("heavy-ups"), federal pacific stab-lok panel replacement, and zinsco panel replacement.
Downtown Annapolis is a historic district with 18th–19th century homes, brick walls, and tight permitting through the Historic Preservation Commission. Waterfront properties also require careful attention to GFCI protection, marine-grade wiring, and storm-driven outage prep.
When You Actually Need a Panel Upgrade
A 'heavy-up' - moving from 100-amp to 200-amp service - is one of the most common requests we get. You typically need one if you're adding an EV charger, a heat pump or mini-split, a hot tub, an addition, or if your existing panel is full and there's no room for new circuits.
If your panel is a Federal Pacific Stab-Lok or a Zinsco, the answer is simpler: replace it. Both panels have documented histories of breakers failing to trip during overcurrent - a known fire hazard and one that most insurers now flag during inspection.
Why Pirro Electric for Panel Work
Panel work is some of the highest-stakes residential electrical you can hire out - bad workmanship can quietly create fire hazards for years. We're licensed master electricians in MD, DC, and VA, fully insured, and we pull permits on every panel swap. No exceptions.
More detail on scope and pricing: our full panel upgrades & heavy-ups page or the electrical panel upgrade cost in the dmv guide.
What Affects the Price of Panel Upgrades & Heavy-Ups in Annapolis
Every quote is written after an on-site look. These are the variables that move the number:
- Service size (100A → 200A vs. 200A → 400A)
- Overhead vs. underground service drop
- Meter base and service entrance condition
- Panel location (basement vs. exterior wall)
- Permit and county inspection fees
- Whether your current grounding system needs upgrades
Annapolis Housing Stock
Downtown Annapolis is 1700s-1900s brick and frame, often with original wiring and knob-and-tube remnants. Eastport and West Annapolis are largely 1920s-50s singles, and the subdivisions east and south of town are 1980s and newer.
Permits & Utility Coordination in Annapolis
The City of Annapolis has its own permit office in parallel with Anne Arundel County Inspections and Permits, and the historic district adds review for any visible exterior change. Waterfront work also means marine-grade GFCI protection and bonding.
Common Panel Upgrades & Heavy-Ups Projects in Annapolis
- Historic downtown rewiring (HPC coordination)
- Marine & dock electrical for waterfront homes
Neighborhoods servedDowntown Annapolis · Eastport · Murray Hill · West Annapolis
ZIP codes21401 · 21403 · 21409
What's Included
Every job in Annapolis comes scoped, permitted, and inspected - no shortcuts.
- 100-amp to 200-amp service upgrades ("heavy-ups")
- Federal Pacific Stab-Lok panel replacement
- Zinsco panel replacement
- Main breaker panel and meter base swaps
- Sub-panel installation for additions and detached structures
- Whole-home surge protection at the panel
- Panel relabeling and circuit mapping
- AFCI and GFCI breaker upgrades
Panel Upgrades & Heavy-Ups in Annapolis - Common Questions
What Customers Say
Excerpts from verified Google reviews of Pirro Electric.
"If you're thinking of going with Pirro - do it. You won't be sorry. I run a medium-sized HOA and wouldn't use any other company for our electric."
Amanda S.
Google Review · HOA Board Director"We use Pirro across our portfolio of 50+ commercial retail buildings. Excellent work, responsive, priced competitively, and they get it right the first time."
Timothy M.
Google Review · Commercial Property Manager"Pirro re-wired my whole townhouse, updated the panel, and replaced every outlet and switch. Professional, friendly, and on time. Couldn't ask for a better company."
JMW
Google Review · Verified HomeownerNearby Areas We Serve
Same panel upgrades & heavy-ups crew, next town over.
Related Services in Annapolis
Often booked alongside panel upgrades & heavy-ups.
Ready to Get Started in Annapolis?
Free written quotes. Licensed & insured. Same-week scheduling for most projects.