
Complete Guide to Electrical Panel Upgrades in Northern Virginia
Everything Northern Virginia homeowners need to know about electrical panel upgrades, including signs you need one,...

Property-specific electrical panel replacement and service-capacity planning, with load calculations, utility coordination, labeling, and permit-path confirmation. Trusted by homeowners throughout Prince George's County since 1996.
An electrical panel project should start with the condition of the existing equipment and the loads the home needs to support. AJ Long Electric documents the panel, service conductors, grounding and bonding, breaker configuration, available space, and visible signs of heat or damage. A load calculation helps determine whether the project calls for a like-for-like replacement, additional distribution capacity, or a service upgrade. When the scope affects utility-owned equipment, the meter, or service conductors, that coordination is identified before scheduling. The written proposal separates panel work from optional surge protection, branch-circuit corrections, finish work, and other conditions that cannot be confirmed until the system is evaluated. For a College Park property, the recommendation follows the actual equipment, access, electrical capacity, and project goals documented during the assessment.
College Park wraps around the University of Maryland, and that shapes its panels more than its housing age does. A huge share of the city's homes are rentals — group houses, basement apartments, ADU conversions — and the panel upgrade is often driven not by an EV or a renovation but by a City of College Park rental-licensing inspection the property has to pass.
AJ Long Electric defines the panel replacements & upgrades scope for the individual College Park address. The written proposal identifies known conditions, access assumptions, included electrical work, exclusions, and any coordination that must be confirmed before scheduling. Before work begins, we confirm whether the defined scope requires coordination with the Prince George's County Department of Permitting, Inspections & Enforcement; permit, inspection, and utility responsibilities are stated in the proposal for the address.
What makes College Park panel work distinct is the rental-compliance angle. When a single-family home is subdivided into multi-tenant rentals or grows a basement apartment or ADU, the service almost always needs to grow with it — a clean sub-panel for the added unit, dedicated per-unit circuits, AFCI/GFCI protection to current NEC, interconnected smoke and CO detectors, and clear panel labeling are all things the City of College Park rental-licensing inspection checks. On the housing-stock side, the older single-family neighborhoods east and south of campus — College Park Estates, College Heights Estates, Berwyn Heights, Calvert Hills — bring 1920s-50s 60-amp fuse panels, abandoned knob-and-tube, and aluminum branch wiring from 1970s remodels, so the 200-amp upgrade frequently doubles as a code-cleanup. We design the service so it passes rental licensing on the first visit rather than triggering corrective re-inspection. College Park is on the Pepco grid; upgrades run $3,500-$7,500, with the electrical permit through Prince George's County DPIE and the meter pull coordinated with Pepco.

Our licensed electricians serving Prince George's County
AJ Long Electric documents the existing system before recommending panel capacity or equipment. The written scope distinguishes confirmed work from conditions that require access, utility input, or authority review, giving the homeowner a clearer basis for the decision.
Licensed & Insured
Since 1996
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The proposed panel and service size follow a load calculation and the home's planned electrical use.
Circuit organization and labeling make the system easier to operate and maintain.
Visible damage, incompatible components, crowded wiring, grounding, and service-equipment conditions are addressed in the proposal.
Utility, permit, inspection, and outage requirements are confirmed for the address and defined work.
Future EV charging, HVAC, kitchen, or addition loads can be considered during design.
For panel replacements & upgrades at this College Park property, AJ Long Electric begins by reviewing the requested outcome, relevant equipment, safe access, and observed electrical conditions. The written proposal identifies the defined work, sequencing, coordination responsibilities, and exclusions. Authorized work is tested and documented to the completed scope; newly exposed conditions are discussed before the scope changes.
| Typical cost in College Park | $3,500-$7,500 (200A); 400A quoted per projectThe written estimate follows the defined equipment, access, routing, and coordination scope. |
|---|---|
| Typical timeline | 1 day on site |
| Permit authority | Prince George's County Department of Permitting, Inspections & EnforcementAJ Long Electric confirms the permit and inspection path for the address and states the included coordination in the written proposal. |
| Applicable code standard | NEC Article 408 & 250service equipment, panelboards, grounding & bonding (National Electrical Code, NFPA 70). |
| Most common local condition | Property-specific equipment, access, and electrical conditions are confirmed during the assessment. |
Permit fees, scope, and existing-condition surprises affect final pricing. Verify current requirements with the Prince George's County Department of Permitting, Inspections & Enforcement and review the NFPA 70 (National Electrical Code).
We document the panel, service equipment, loads, grounding, breaker configuration, and visible conditions.
The recommended capacity and equipment follow the existing and planned electrical demand.
The estimate identifies included equipment, corrections, coordination, access, and exclusions.
Permit, inspection, outage, and utility requirements are confirmed for the address.
The approved equipment is installed, terminated, grounded, bonded, and labeled to the defined scope.
Connections and operation are checked, the directory is reviewed, and applicable closeout steps are completed.
The exact scope depends on the existing service and the load calculation. It may include the panel enclosure, breakers, grounding and bonding corrections, service conductors or meter equipment, labeling, utility coordination, and required inspection work.
We use the home's existing and planned loads, equipment ratings, service configuration, and the applicable calculation method. A larger rating is not automatically the correct answer for every property.
Brand and age alone do not describe the complete condition. A licensed electrician should identify the exact equipment and evaluate damage, breaker compatibility, service capacity, grounding, and the homeowner's planned loads before recommending a scope.
That depends on the service configuration and work boundary. When utility disconnect, meter, or service-entrance coordination is needed, it is identified and scheduled as part of the project plan.
Permit and inspection requirements depend on the address and defined scope. AJ Long Electric confirms the authority and coordination path before work begins.
The equipment, electrical capacity, access, property layout, and local authority can change the scope from one College Park address to another. AJ Long Electric confirms those conditions and the applicable coordination path before finalizing the proposal.
Cost depends on the equipment, electrical capacity, access, route, corrective work, and local coordination required at the property. AJ Long Electric provides a written estimate after the relevant conditions and project boundary are assessed.
Permit and inspection requirements depend on the address and the defined electrical scope. AJ Long Electric confirms the applicable path with the authority serving the property and states the included coordination in the written proposal.
Timing depends on the defined scope, safe access, equipment and material availability, property conditions, and any permit, inspection, utility, or other-trade coordination. AJ Long Electric confirms the anticipated sequence after the assessment.
AJ Long Electric has served the region since 1996. We are a licensed, insured electrical contractor led by a master electrician, and we define the scope, access assumptions, exclusions, and project-specific coordination before authorized work begins.
Scheduling depends on the current workload and the project scope. Call (571) 444-6886 or request an appointment online and we will confirm the earliest available time for your College Park address.
Frequently, yes. Subdividing a College Park home into multi-tenant rentals or adding a basement apartment or ADU usually outgrows the existing service. A City of College Park rental-licensing inspection looks for a properly sized sub-panel for the added unit, dedicated per-unit circuits, AFCI/GFCI protection to current NEC, interconnected smoke/CO detectors, and clear labeling. AJ Long Electric designs the 200-amp upgrade ($3,500-$7,500) to pass licensing on the first visit, permitted through Prince George's County DPIE.
In the 1920s-50s neighborhoods east and south of campus — College Park Estates, College Heights Estates, Berwyn Heights, Calvert Hills — a panel upgrade often surfaces 60-amp fuse panels, abandoned knob-and-tube, and aluminum branch wiring from 1970s remodels. AJ Long Electric handles those alongside the move to 200-amp service so the upgrade doubles as a code-cleanup, with the Pepco meter pull coordinated and the work permitted through PG County DPIE.
Typical Price Range: $3,500-$7,500 (200A); 400A quoted per project
Contact AJ Long Electric to request a written estimate for the defined College Park scope.
Real Projects
See how we have helped homeowners across Northern Virginia with their panel replacements & upgrades in college park needs.
Challenge
A College Park property owner near Calvert Hills was converting a basement into a licensed rental apartment, but the 1950s home's existing service had no capacity for a second unit and lacked the dedicated circuits, AFCI/GFCI protection, and interconnected detectors a City of College Park rental-licensing inspection requires.
Solution
We upgraded the home to 200-amp service, installed a properly sized sub-panel dedicated to the basement unit with its own metered-out circuit layout, added AFCI/GFCI protection and interconnected smoke/CO detectors to current NEC, and labeled the panels clearly for the inspector. We coordinated the Pepco meter pull and permitted through PG County DPIE.
Result
The basement apartment passed its City of College Park rental-licensing inspection on the first visit, with the upgraded service and dedicated sub-panel giving both units clean, code-compliant power and headroom for future loads.
We also provide professional panel replacements & upgrades services in these nearby communities.
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