400-amp panel upgrade cost in Massachusetts
| Typical totalinstalled, 400 amp | $6,575 |
|---|---|
| Range you should see in bidsthree bids on the same scope normally land inside this | $4,383 – $9,862 |
| Labor portion68% of the job — this is the part that moves by state | $4,471 |
| Material portion32% — bought at national prices | $2,104 |
| Electricians pay in Massachusettsabout $39/hr · BLS OEWS May 2025, SOC 47-2111 | $81,560/yr |
| U.S. mean for the same tradeSOC 47-2111 | $71,490/yr |
| Versus the national priceMassachusetts trade pay runs +14.1% against the U.S. mean | +$575 |
Notes
- Where the number comes from. The national price for a 400-amp service upgrade is $6,000 installed — service panel upgrade pricing published for 2026. Labor is about 68% of that. Electricians in Massachusetts average $81,560 a year against a U.S. mean of $71,490 — a factor of 1.141 — so the labor half is scaled by that and the material half is not.
- What is in the price: the panel, breakers, a new meter base, grounding electrodes, the service mast, permit inspection time, and labor.
- What is not: the utility drop, trenching for an underground service, any rewiring inside the house, and repairs to walls the mast passes through. These are the lines that turn a $6,575 quote into a $8,218 invoice, so ask about each one before signing.
- Why state matters more than people expect. Materials ship at national prices; crews do not move. Massachusetts sits above the national mean by 14.1%, which lands on 68% of the job and moves the total by $575.
- Use this as a bid check, not a quote. It prices an average job in an average condition. Difficult access, the state of what is being replaced, the season, and a crew booked out three months all move the real number, and none of them are in a national average for the job.
A 400-amp panel upgrade in Massachusetts
$6,575 is the typical installed figure for a 400-amp service upgrade in Massachusetts, and bids normally land between $4,383 and $9,862.
This is a job price, not a unit price. Nobody quotes it per amp, per grain or per gallon, and any number that pretends otherwise is working backwards from a total it already picked.
Why this is not the national number
The same job priced at the U.S. average comes to $6,000 — this one is $575 more.
The reason is one number, and it is a published one. Electricians in Massachusetts average $81,560 a year against a U.S. mean of $71,490, from the Bureau of Labor Statistics OEWS release for May 2025, SOC 47-2111. That is roughly $39 an hour of trade pay, a factor of 1.141, or +14.1% against the national mean.
Labor is about 68% of this job. Material is the other 32%, and a box of fittings costs the same in every state it is opened in. So only the labor half is scaled here, and the material half is left at national pricing.
That is the whole model, and it is deliberately simple enough to check: $4,471 of labor, $2,104 of material.
Upgrading the panel is not the same as upgrading the service
Swapping a panel for a bigger one changes nothing if the wire from the utility, the meter base and the mast are still sized for the old load. A real service upgrade replaces all of it, and that is what the figure above prices. A "panel swap" — new box, same service — is a much smaller job, and quotes for the two get compared against each other all the time.
Do the load calculation before choosing the size
NEC 220.82 gives a number for the house you actually have. Most homes that feel short of capacity turn out to need 150 A, not 200 A, and the gap between those two prices is real money. The honest reason to go to 200 A anyway is what comes next: an EV charger, a heat pump, an induction range, a shop. Sizing for that is a decision, not a code requirement, and it should be made deliberately.
What the utility controls, and you do not
The drop from the pole, the meter itself, and the schedule. Utility coordination is usually the longest part of a panel upgrade and none of it is in the contractor's price. On an underground service, trenching is a separate line again and it is priced by the foot.
How to use this against a real bid
Three quotes on identical scope should cluster. One well under $4,383 usually means something was left out of the scope rather than found cheaper — read the exclusions before reading the total. One well over $9,862 is either a harder job than average or a crew that does not want the work and priced accordingly.
The figure above prices an average job in average condition. Access, the age of what is being replaced, the season, and how booked the crew is all move it.