A panel upgrade or full home rewire is one of the costliest electrical projects most homeowners face—and getting it wrong means overpaying by thousands or hiring someone unqualified. Getting multiple estimates isn't optional; it's the only way to understand fair pricing, scope differences, and contractor reliability. Here's how to gather, evaluate, and compare electrician quotes so you actually know what you're paying for.
Why Multiple Estimates Matter for Panel & Rewiring Work
Panel upgrades typically run $3,000–$5,000 for a straightforward 100-to-200-amp increase, while whole-house rewiring can exceed $15,000 depending on square footage and wall accessibility. The gap between lowest and highest bids on the same job often reaches 40–60%, not because one is ripping you off but because scope interpretation varies wildly. One electrician might quote labor-only; another includes permits and inspection fees. A third might discover your old knob-and-tube wiring requires additional remediation. Only side-by-side estimates reveal these differences.
How to Prepare Before Requesting Estimates
Before contacting electricians, gather your home's electrical history. Pull your most recent utility bill and locate your current panel—note its amperage (look on the main breaker switch). If you're upgrading, know why: new additions, frequent breaker trips, or a code requirement for a mortgage refinance all affect scope and cost.
Take clear photos of your electrical panel from multiple angles and any problem areas (outlets sparking, flickering lights, burned wire insulation). Write a one-paragraph description of what you need: "Upgrade 100-amp panel to 200 amps" or "Complete rewire of 1,800 sq ft ranch home with knob-and-tube in walls." Vague requests generate vague, inconsistent estimates.
Confirm whether you'll handle permits yourself or want the electrician to manage them. Most panel upgrades and rewiring require permits and final inspection ($150–$300 typically); clarify upfront whether that's bundled into the quote.
What to Ask Every Electrician
When you contact each electrician, ask these specific questions:
- Is this price labor and materials, or labor only? Some quote parts separately, others bundle them.
- Does your estimate include permit applications and final inspection fees? If not, how much do you budget for those?
- What's your timeline? Panel upgrades usually take 1–3 days; full rewires span 1–2 weeks depending on size.
- Are you licensed and insured? Verify their license number with your local licensing board and ask for proof of general liability insurance.
- Will you pull permits in your name or the homeowner's name? Your name is cleaner; their name lets you avoid hassle but gives them liability.
- What warranty do you offer on labor and parts? Industry standard is 1–2 years on workmanship.
Request a written estimate, not a verbal quote. Email confirmation is fine, but it must itemize labor hours, materials, permits, and timeline.
Evaluating Estimates Side-by-Side
Create a simple spreadsheet with columns for electrician name, total price, labor cost, materials cost, permits included (yes/no), timeline, warranty, and notes. Immediately flag any estimate that's dramatically below the others—it often signals incomplete scope or cut corners. Flag estimates that spike high if the electrician hasn't explained the difference.
Watch for red flags:
- Unwillingness to provide a written estimate
- No proof of licensing or insurance
- Vague descriptions ("rewiring," with no square footage or specifics)
- Quoted timeline under 2 days for a full panel upgrade (unrealistic)
- No mention of permits or inspections
Making Your Decision
Price matters, but it's only one factor. A mid-range estimate from a licensed, insured electrician with clear scope and references often outweighs the cheapest bid. Check online reviews and ask for references—call at least two and ask about timeline adherence, cleanup, and final inspection results.
If you're comparing estimates from multiple contractors, Mercoly makes it easy to gather verified electricians offering panel upgrades and rewiring in your area, compare their qualifications side-by-side, and see real customer feedback all in one place.
Schedule in-person walkthroughs with your top 2–3 choices before deciding. Phone quotes are incomplete; an electrician who visits and inspects your panel and wiring will often spot issues that shift the estimate.
Frequently Asked Questions
Q: Should I get a panel upgrade or full rewire? A panel upgrade adds capacity to your existing electrical system, while a rewire replaces old wiring throughout the home. A full rewire is only necessary if your wiring is outdated (knob-and-tube, aluminum) or severely damaged.
Q: How long should I expect a panel upgrade to take? Most panel upgrades take 1–3 days depending on whether the electrician encounters hidden complications like damaged wiring or inadequate grounding. Full home rewires typically run 1–2 weeks for houses under 2,500 sq ft.
Q: What's a realistic price range for a 100-to-200 amp panel upgrade? Budget $3,000–$5,000 for a straightforward upgrade in most regions; costs rise if the panel location is difficult to access or local codes require additional grounding work.
Compare electrician estimates for your specific project today and hire with confidence.