Electrical Panel Upgrade Cost Calculator: Estimate Your Cost and Check Your Quote
Planning to replace or upgrade your breaker box? This electrical panel upgrade cost calculator shows a low, typical and high price for the job in the USA or UK. It works as an electrical panel cost calculator for 100, 200, 300 and 400 amp service. The 200 amp option is selected for you, so it also acts as a cost to upgrade electrical panel to 200 amps calculator. In the US you can add extras like a permit or an EV charger circuit, then enter your quote to check it.
Quick answer: This Old House (2026) lists a 200 amp panel with installation at $1,300 to $3,000 in the US, before the permit and extras. The midpoint is $2,150. SubcontractorHub gives $1,500 to $4,000 for a 100 to 200 amp upgrade. In the UK, Fantastic Services puts a consumer unit replacement at £450 to £750, or £700 to £1,200 in London and the South East.
Electrical Panel Upgrade Cost Calculator
Prices last reviewed October 2026. Estimates only: this is not a quote or electrical advice. Panel work is dangerous, so hire a licensed electrician.
My Personal Experience Building the Electrical Panel Upgrade Cost Calculator
I want to share my personal experience with this new tool, the Electrical Panel Upgrade Cost Calculator.
As you know, I work as a web developer. I build websites for clients in different cities and countries, including the UK, USA, and Pakistan, and I also work on SEO.
One day, I was talking to one of my clients from the USA. I had previously shown him my website, Get Calculator Base (GCB). He explored the website himself and found the tools useful. He then recommended that I build a tool that could help people estimate electrical panel upgrade costs.
Before that, I had not thought much about creating this type of tool. But when my client suggested the idea, I started working on it. I also contacted people I knew in the USA and the UK to learn more about their needs. I already knew some of these people through my previous work, including building websites for an FHC client in the UK and an FP Insoles client.
I also contacted a finance expert and another expert I knew. We mentioned their names in the acknowledgements and started working together.
After a few days, the tool was ready. I shared it with clients in different cities who understood this type of work and asked them to test it and provide feedback. I have added their testimonials below so you can read their feedback yourself.
After seeing their responses, I continued improving the tool. One client told me he was surprised when he saw it and was very happy with the result. I felt happy too because he was satisfied and now regularly uses the tool whenever he needs it. He also recommends it to other people.
For me, launching a tool is only the beginning. What matters is that it serves its purpose and helps not only my client but also other people who can benefit from it.
Important Tip:
Always remember that this tool is for informational and educational purposes only. It does not provide professional advice. Although this tool is especially relevant to people in the USA and UK, people from other countries, cities, or states can also use it.
Key Facts About This Calculator
Item | Detail |
|---|---|
What it estimates | The cost to replace or upgrade a home electrical panel (USA) or consumer unit (UK) |
Countries | United States (USD) and United Kingdom (GBP) |
Price basis | Published ranges from This Old House, SubcontractorHub and Fantastic Services, checked against two other guides; typical is the midpoint of each range |
Last reviewed | October 2026 |
Not included | Utility service upgrade or transformer work; UK earthing, bonding and board relocation |
Best for | Homeowners and buyers who want a budget range before asking for quotes |
Not for | Anyone who needs a binding price. Only a licensed electrician can quote your job |
What Is an Electrical Panel Upgrade?
An electrical panel is the metal box that splits power from the utility into the circuits in your home. It holds the main breaker and a smaller breaker for each circuit. An upgrade means replacing it with a newer panel, often with a higher amp rating. People do it to add an EV charger or heat pump, to fix a worn or crowded panel, or to meet code. In the UK the same box is called a consumer unit, or fuse box.
Key Terms
Term | Meaning |
|---|---|
Amp (A) | The size of the electrical service, such as 100 A or 200 A. A higher number means more power can flow into the home. |
Breaker | A switch that cuts power to one circuit when it overloads. |
AFCI and GFCI | Breaker types that protect against arc faults (AFCI) and ground faults (GFCI). |
Meter box | The box that holds the utility’s electric meter. |
Service upgrade | Work on the line that brings power from the utility to the house. |
Subpanel | A smaller panel fed from the main panel to add circuits. |
Consumer unit | The UK name for the fuse box or breaker box. |
RCD and RCBO | UK devices that guard against earth faults. An RCBO also protects a single circuit from overload. |
Part P | The UK building rule that makes a consumer unit replacement notifiable work. |
How This Electrical Panel Upgrade Cost Calculator Works
The calculator adds up published price ranges. It does not guess. Each line comes from a cost guide we link at the bottom of the page. The tool runs in your browser, so the calculator does not send the numbers you type anywhere.
Here is the math:
Low = base low + extras low + (breakers x breaker low)
High = base high + extras high + (breakers x breaker high)
Typical = (Low + High) / 2The base is the panel and installation for the size you pick. Extras are the boxes you tick. Breakers are the AFCI or GFCI breakers you add, at $35 to $60 each.
Why a range? No two homes are alike. Utility rules, access, local labor and the age of your wiring all move the price. Cost guides also disagree with each other, so one exact number would be false comfort. We show a low, a typical (the midpoint) and a high. We do not use regional multipliers, because we could not find a source for them.
How to Use the Electrical Panel Cost Calculator
- Pick your country. The USA and UK use different parts and rules, so the options change.
- Choose the upgrade type. In the US, 200 amps is selected for you.
- Tick the extras that fit your home. The permit is ticked by default.
- In the US, enter how many AFCI or GFCI breakers you plan to add.
- Read the low, typical and high totals and the line-by-line table.
- Type your quote in the box. The tool shows whether it sits below, inside or above the published range.
- Press Copy estimate to save the result.
200 Amp Panel Calculator: Two Worked Examples
The most common job is a move to 200 amps. Here is what the calculator shows for two cases.
100 Amp to 200 Amp Upgrade With a Permit
Pick Upgrade to 200 A and keep the permit ticked. The panel and installation run $1,300 to $3,000. The permit adds $50 to $300. The result is $1,350 low, $2,325 typical and $3,300 high.
200 Amp Electrical Panel Upgrade Cost With Extras
Now add a hard-to-reach panel ($300 to $800), code updates the inspector requires ($200 to $600) and 10 AFCI or GFCI breakers ($350 to $600 in total). The result is $2,200 low, $3,750 typical and $5,300 high. The extras added about $1,400 to the typical price, so ticking the right boxes matters.
Example | Low | Typical | High |
|---|---|---|---|
200 A + permit | $1,350 | $2,325 | $3,300 |
200 A + permit + hard access + code updates + 10 breakers | $2,200 | $3,750 | $5,300 |
What Affects Your Panel Upgrade Cost
Amp Size and Panel Type
A bigger panel costs more to buy and takes more work to install.
Labor and Access
A panel in a finished basement or behind a long conduit run takes longer to reach. SubcontractorHub lists $300 to $800 for hard access.
Utility Work and the Meter Box
Sometimes the utility must change the meter or service line. A meter box replacement runs $1,800 to $3,500 installed. Rewiring America notes that utility scheduling can add months in some regions.
Permit and Inspection
A permit costs about $50 to $300. Panel work needs a permit in most areas and gets inspected afterward. Most US areas follow the National Electrical Code (NEC) with local changes, so check the rules with your building department.
Code Updates
An inspector can ask for updates such as AFCI or GFCI protection or better grounding. SubcontractorHub lists $200 to $600 for this, and This Old House lists $35 to $60 for each new breaker.
Add-Ons
A new subpanel costs $400 to $1,750. Moving the panel costs $800 to $3,000. A new 240 V EV charger circuit adds $400 to $800.
What the Calculator Does Not Include
The biggest missing item is a utility service upgrade or transformer replacement. One nonprofit guide says this can cost $5,000 to $25,000 when it is needed, especially with underground lines. Ask your electrician early whether the utility must do any work. In the UK, fixing old earthing, bonding or cabling and moving the board are usually charged separately.
What Different Cost Guides Say
Source | What it covers | Published range |
|---|---|---|
This Old House | 200 amp panel and installation | $1,300 to $3,000 |
SubcontractorHub | 100 to 200 amp upgrade | $1,500 to $4,000 |
Rewiring America | Typical panel upgrade | $2,000 to $4,000 |
Fantastic Services (UK) | Consumer unit, rest of UK | £450 to £750 |
The numbers differ because guides cover different scopes, regions and years. That is one more reason to compare 2 to 3 written quotes.
Consumer Unit (Fuse Box) Replacement Cost in the UK
UK homes use a consumer unit, not an amp-rated panel upgrade. A replacement costs about £450 to £750 across most of the UK. In London and the South East it runs £700 to £1,200, and a standard 10-circuit unit outside London is about £470 to £650. Book a Builder puts a straightforward replacement at £550 to £1,500, and says it can pass £1,500 if faults are found. Fixing earthing and bonding can add £100 to £400.
The job is notifiable under Part P, so a registered electrician should do it and issue an Electrical Installation Certificate. Modern units use RCDs or RCBOs. Old earthing, bonding or cabling may need extra work, which costs more.
Signs You May Need a Panel Upgrade
Your panel may need an upgrade if it is under 100 amps, such as a 40 or 60 amp panel, according to Rewiring America. A very old, worn or unsafe panel may need replacing even at the same amp size. Adding big electric loads like an EV charger or heat pump can also call for one, but many homes with 100 to 150 amp panels can avoid it with some planning. An electrician can run a load calculation to tell you for sure.
How Long Does a Panel Upgrade Take?
In the UK, a straightforward consumer unit swap often takes a day, and the power is typically off for about 4 to 8 hours. Extra repairs can add days. In the US, the electrician’s work is only part of the timeline. The permit, inspection and utility scheduling come on top, and Rewiring America notes that utility coordination can add months in some regions. Ask for a timeline in writing.
Checklist: Before You Hire an Electrician
- • Confirm the amp size you need. Ask for a load calculation.
- • Ask whether the utility must change the meter or service line.
- • Get 2 to 3 written, itemized quotes.
- • Check that the permit and inspection are included.
- • Confirm the electrician is licensed and insured. In the UK, check for NICEIC or NAPIT registration.
- • Ask what code updates the inspector may require.
- • Ask for a timeline, including utility scheduling.
Common Mistakes to Avoid
- • Comparing quotes with different scope. One may include the permit and meter work, and another may not.
- • Forgetting the utility. Utility work can cost more than the panel itself.
- • Assuming you need an upgrade. Rewiring America says many homes with 100 to 150 amp panels can electrify without one, with some planning.
- • Treating the estimate as a quote. Real prices depend on your home.
- • Doing it yourself. Panel work is dangerous and usually needs a permit and a licensed electrician.
Plan the Rest of Your Budget
A panel upgrade is rarely the only cost. Older homes sometimes have small or worn panels, so if you are buying one, test the numbers in our rent vs buy calculator. If you want to spread the cost, compare repayment options with Loan Analytics Pro. Planning other work around the house? Try the brick wall cost calculator. You can browse every tool in our finance tools hub.
Benefits of Upgrading Your Panel
A higher amp panel gives you room for an EV charger, heat pump or electric range. It can replace a worn or unsafe panel. It also gives you room for more circuits later.
Tips to Save Money
- Compare at least three quotes from licensed electricians.
- Bundle the work with an EV charger or heat pump install, so you pay for one visit.
- Clear access to the panel before the crew arrives.
- Ask whether smart load management or power-smart appliances could avoid the upgrade.
- Ask what is included before you compare prices.
Frequently Asked Questions (FAQs)
How does the calculator work?
It adds published price ranges for the panel, extras and breakers, then shows a low, typical and high total. Typical is the midpoint of the range.
Is the result a quote?
No. It is an estimate for planning. Only a licensed electrician can quote your job.
Why does the tool show a range and not one price?
Cost guides disagree and every home is different, so one number would give false comfort.
What does the estimate leave out?
A utility service upgrade or transformer replacement, which one guide says can cost $5,000 to $25,000. In the UK it also leaves out earthing, bonding and moving the board.
Where do the prices come from?
From This Old House, SubcontractorHub and Fantastic Services, checked against Rewiring America and Book a Builder. The sources are listed at the bottom of the page.
Can I use it for a UK home?
Yes. Choose United Kingdom to see consumer unit (fuse box) replacement costs in pounds. The UK option has no amp sizes or extras.
About This Calculator and Our Sources
The GetCalcBase team built this calculator from published cost guides. We are not electricians, so we kept to what the sources say. This is how we checked our work:
- We opened every source listed below and copied only the ranges it states.
- We tested the formula with sample inputs and matched the totals by hand.
- We compared each range with other guides and show where they disagree.
- We left out any figure we could not source, including regional price multipliers.
Author: Waseem Aijaz
Prices were last reviewed in October 2026. Sources:
- This Old House: What Is the Cost to Upgrade an Electrical Panel? (updated March 2026)
- SubcontractorHub: Electrical Panel Upgrade Cost Calculator
- Rewiring America: Pros and cons of a panel upgrade
- Fantastic Services: Fuse box replacement cost, UK 2026
- Book a Builder: Consumer unit cost 2026
Disclaimer
This calculator gives estimates for planning only. It is not a quote, an offer or electrical advice, and it cannot see your home. Real prices depend on your panel, your utility, your local rules and your electrician. Electrical work can cause shock and fire, so only a licensed electrician should do it. Check permit and code rules with your local building department.
Updates and Corrections
Prices were last reviewed in October 2026. If you find a wrong figure or a broken source link, please contact us through this site so we can fix it.
