Electrical panel upgrade cost in Seattle (2026):
100 to 200 amps, permits and utility steps
HOW MUCH DOES AN ELECTRICAL PANEL UPGRADE COST IN SEATTLE?
Angi puts electrical panel replacement in Seattle at $870 to $3,202, with an average of $2,022 (July 2026). Upgrading from 100 to 200 amps costs $1,300 to $3,000 nationally, according to This Old House, while Fixr says most homeowners pay around $3,000. In Seattle, the electrical permit comes from SDCI, and a bigger service may also need Seattle City Light.
Panel upgrade cost by amperage
| Panel size | Upgrade, installed (Fixr) | Panel + installation (This Old House) |
|---|---|---|
| 100 amps | $1,200–$1,800 | $800–$1,500 |
| 150 amps | $1,500–$2,800 | not listed |
| 200 amps | $1,800–$4,500 | $1,300–$3,000 |
| 400 amps | $8,000–$12,000 | $2,000–$4,000 |
The panel itself is a small part of the bill. Angi's Seattle page lists $150 to $250 for a 200-amp panel alone; most of the cost is labor, materials and permits.
Why homeowners upgrade
New electric equipment adds load: a heat pump, a mini split, a heat pump water heater, an EV charger, an electric range or a transfer switch for a backup generator. Angi notes that older panels often max out at 100 amps.
- Signs listed by This Old House and Fixr: breakers that trip often, lights that flicker or dim under load, buzzing or heat at the panel, visible damage or corrosion, or having to unplug one appliance to run another.
- This Old House names Federal Pacific Electric and Zinsco as outdated panels; Fixr names Stab-Lok panels as an older model linked to fire risk.
- This Old House says panels typically last 25 to 40 years.
Seattle City Light notes that you may already have enough capacity for an EV charger or heat pump. A load calculation tells you whether an upgrade is needed before you pay for one.
Labor and extra costs
| Item | Cost | Source |
|---|---|---|
| Electrician rate | $50–$150 per hour | Angi Seattle |
| Main breaker panel | $500–$2,000 | Angi Seattle |
| Subpanel | $400–$2,000 | Angi Seattle |
| Replacing a fuse box | $1,500–$2,000 | Angi Seattle |
| Meter box | $100–$650 (Seattle); $200–$800 installed (U.S.) | Angi Seattle; Fixr |
| Moving the panel | $1,500–$4,000 | Angi Seattle |
| Replacing faulty wiring | $600–$4,500 | Angi Seattle |
| Generator transfer switch, installed | $1,333–$1,778 (average $1,611) | Angi Seattle |
Example: average Seattle job with tax and permit
| Step | Amount |
|---|---|
| Average Seattle panel replacement (Angi) | $2,022 |
| Sales tax at 10.55% | + $213 |
| SDCI permit, 200-amp panel without plans (Angi's estimate) | + about $236 |
| Estimated total | about $2,471 |
Seattle electrical permit
- In Seattle, electrical permits are issued by SDCI. SDCI says you need one "any time electrical wiring is installed, altered, extended, or connected."
- Owners may do their own electrical work only on a property they own and occupy. Contractors applying for permits need a Washington electrical contractor license.
- Most permits require three inspections: cover, service and final.
- SDCI's fee depends on the value of the work. Angi gives about $365 for a $3,000 panel job and about $236 for a 200-amp panel without plans, including a $52.45 administrative fee.
When Seattle City Light is involved
If your home needs a bigger electrical service, not just a new panel, City Light gets involved. City Light recommends a load study by a certified electrical consultant. If your load exceeds the available capacity, the first step is an online application for electric service.
- City Light says "the customer is responsible for electrical service installations and upgrades, including permits and inspections."
- City Light requires payment for its services before it completes the connection. Its page doesn't list the amounts; ask your electrician to include utility steps in the timeline.
- City Light's intake desk: (206) 233-2777.
Rebates for panel upgrades
Washington's Home Electrification and Appliance Rebates (HEAR) program lists electric panel and wiring upgrades needed for new electric equipment as eligible, for households at or below 150% of area median income. Rebates run through local administrators, and the City of Seattle is listed as an awardee. The Commerce page doesn't give amounts or say that applications are open, so check before you count on it.
Before you sign
- Washington contractors collect sales tax "on the gross contract price," labor included (Department of Revenue). Seattle's rate is 10.55% since January 1, 2026.
- Look the electrician up on L&I's Verify a Contractor tool: active license, bond, insurance and past violations.
- For jobs of $1,000 or more on a home, the contractor must give you a written disclosure statement before work starts (RCW 18.27.114).
- Compare panel size, brand, number of breaker spaces, whether the meter or service changes, permit and inspections, and drywall or wiring repairs on every quote.
Frequently asked questions
How much does an electrical panel upgrade cost in Seattle?
Angi puts panel replacement in Seattle at $870 to $3,202, with an average of $2,022 (July 2026). Seattle's 10.55% sales tax and the SDCI permit add to that.
How much does it cost to upgrade from 100 to 200 amps?
This Old House lists $1,300 to $3,000, with an average of $2,150. Fixr says most homeowners pay around $3,000. If the utility service must also change, Seattle City Light charges for its part before connecting.
Do I need a permit to replace an electrical panel in Seattle?
Yes. SDCI issues electrical permits in Seattle and requires one whenever wiring is installed, altered, extended or connected. Most permits need cover, service and final inspections.
Do I need a panel upgrade for a heat pump?
Not always. Seattle City Light says you may already have enough capacity for a heat pump or EV charger. A load calculation shows whether your current service is enough.
How long does an electrical panel last?
This Old House says panels typically last 25 to 40 years. It names Federal Pacific Electric and Zinsco as outdated panels.
Sources
- Angi — Electrical panel replacement cost in Seattle, WA (updated Jul 9, 2026)
- Angi — Generator transfer switch installation cost in Seattle, WA (updated Jul 21, 2026)
- Fixr — Cost to replace or upgrade an electrical panel (updated January 31, 2025)
- This Old House — Cost to upgrade an electrical panel (updated March 31, 2026)
- Seattle SDCI — Electrical Permit
- Seattle City Light — Capacity, Load and Electrical Service
- Washington Department of Commerce — Home Electrification and Appliance Rebates (HEAR)
- WA Department of Revenue; Seattle rate change; RCW 18.27.114; L&I — Hiring a contractor
All sources accessed October 12, 2026. Fees and rebate programs change; check SDCI, City Light and Commerce before you sign.
These figures are estimates compiled from the published sources above. They are not quotes and can't account for your home or your electrician. Electrical work is dangerous; hire a licensed electrician. Permit, utility, tax and rebate rules can change, so confirm them with SDCI, Seattle City Light and your contractor. Get written estimates from licensed, bonded and insured contractors before deciding. See our disclosure and disclaimer.