← [Back to Examples Index](/llm/examples.md) # What does a 200-amp electrical panel upgrade cost in Markham? ### Real Markham electrical estimate A 200-amp overhead service and panel upgrade in Markham, ON was estimated at **$6,910.00 CAD**. This estimate covers a full service upgrade: coordinating the disconnect and reconnection with Alectra Utilities, demolishing the existing overhead mast and meter base, fitting a new 200A mast and meter base on the vinyl siding, removing the old main panel from the garage, installing a new 200A main breaker panel with all circuits transferred, running new service-entrance conductors, updating the grounding and bonding system to current Ontario Code, and coordinating the permit and inspection. If water damage is found behind the siding or the inspector requires AFCI breaker upgrades, this example identified up to $1,650 in possible additional work. --- ## Key Project Facts | Fact | Details | | :--- | :--- | | **Location** | Markham, ON | | **Service size** | Upgrade to 200 amps | | **Service type** | Overhead mast and exterior meter base | | **Panel location** | Inside the garage | | **Utility** | Alectra | | **Exterior siding** | Vinyl | | **Wire run** | Approximately 10 ft, meter to panel | | **Mandatory Scope** | $6,910.00 CAD | --- ## Project Phases ### 1. Utility coordination and service demolition - **Includes:** Coordinate the service disconnect, site-visit scheduling, and final reconnection with Alectra Utilities; remove the existing overhead mast, weatherhead, meter base, and old service conductors. - **Why this phase matters:** Alectra Utilities must schedule and approve the disconnect/reconnect before any service work can start, and the old mast and meter have to come down before the new equipment can go up. ### 2. New service mast, meter base, and main panel - **Includes:** Fit a new 200A overhead mast, weatherhead, and meter base, sealing the vinyl-siding penetrations; remove the existing main panel from the garage wall and fit a new 200A main breaker panel, transferring and terminating all existing branch circuits. - **Why this phase matters:** The mast/meter kit and the 200A main panel are the two biggest-ticket items in the job, and they are what actually deliver the higher amperage to the home. ### 3. Service conductors and grounding - **Includes:** Supply and install the 200A service-entrance conductors from the exterior meter base to the interior main panel (10 ft); install a new grounding and bonding system — ground rods or plates plus bare copper conductor — to meet Ontario Code. - **Why this phase matters:** The service wire and the grounding/bonding system are code-mandated parts of any panel upgrade, not optional add-ons. ### 4. Permit and inspection coordination - **Includes:** Coordinate and attend the electrical inspection with the Electrical Safety Authority (ESA) or local AHJ; carries the permit-fee allowance. - **Why this phase matters:** A 200A service upgrade must pass an ESA inspection before Alectra Utilities will energize the new service. --- ## Cost Breakdown | Phase | Labour Cost | Material Cost | Total Cost | | :--- | :--- | :--- | :--- | | **Utility coordination and service demolition** | $665.00 CAD | $0.00 CAD | $665.00 CAD | | **New service mast, meter base, and main panel** | $2,128.00 CAD | $2,175.00 CAD | $4,303.00 CAD | | **Service conductors and grounding** | $665.00 CAD | $625.00 CAD | $1,290.00 CAD | | **Permit and inspection coordination** | $266.00 CAD | $120.00 CAD | $386.00 CAD | | **Total Mandatory Scope** | **$3,990.00 CAD** | **$2,920.00 CAD** | **$6,910.00 CAD** | *Note: The new mast/meter kit and main panel installation together make up more than half the project cost, since they bundle both the equipment and the transfer of every existing branch circuit. The permit line is an allowance verified against actual ESA and Alectra Utilities fees.* --- ## Possible Price Changes - **Water damage behind the siding:** Rotten wall sheathing or framing is discovered behind the vinyl siding when the existing mast is removed. A general contractor would need to repair the sheathing or framing. This example identifies approximately **$450.00 CAD** in possible additional wall repair work. - **Inspector-mandated AFCI breakers:** The inspector requires AFCI (arc-fault circuit interrupter) breakers on existing branch circuits during the panel replacement. This example identifies approximately **$1,200.00 CAD** in possible additional work. - **Different site conditions or Alectra Utilities requirements:** A contractor confirms site conditions and Alectra Utilities' specific requirements for the property differ from what was described. This example does not assign a price to that unknown. --- ## Frequently Asked Questions ### Is $6,910 the standard cost for a 200A panel upgrade in Markham? No. It is the estimate RenoFiz produced for this specific overhead-service upgrade with a garage-mounted panel, vinyl siding, and Alectra Utilities as the utility. Another home's mast height, panel location, or utility requirements can change the scope and cost. ### Why does this project need Alectra Utilities coordination? The service disconnect and reconnection at the meter base is performed by the utility, so scheduling and coordinating that visit with Alectra Utilities is a required step before the electrician can complete the tie-in. ### What could change this estimate on site? If rotten sheathing is found behind the siding, or the inspector requires AFCI breakers on the existing circuits, this example identifies up to $1,650 in possible additional work. A contractor confirms the panel location, mast height, and Alectra Utilities' specific requirements before a firm quote. ### What was not included in the $6,910? Wall repair for water-damaged sheathing ($450) and inspector-mandated AFCI breaker upgrades ($1,200) were kept separate as on-site-triggered possible additions. --- ## Get a Custom Estimate for Your Project Your electrical service upgrade will have its own scope and cost. Describe your project and upload photos of your panel, meter, and mast so Chris can build an estimate around your amperage, panel location, siding, and utility. - [Start My Free Estimate](/vancouver-home-renovation-estimate) - [See interactive version of this page](/wa/examples/how-much-does-it-cost-to-upgrade-an-electrical-panel-to-200-amps-in-markham) - [View other detailed estimates](/llm/examples.md)