How much does a 400 amp panel upgrade cost in San Diego?
Published San Diego pricing for a 200A to 400A upgrade is $4,500–$8,500 installed. It usually needs an SDG&E service request. City of San Diego records show 28 residential 400A permits on 17 properties issued Jan 1–Oct 15, 2026, a small sample.
Source: see the sources cited on this page · Last updated: October 17, 2026 · Prices are public ranges or declared permit values, not quotes.
400 amp upgrade price
| Upgrade | Installed | Typical use |
|---|---|---|
| 200A → 400A | $4,500–$8,500 | Large homes, ADUs, EV + pool + heat pump |
Source: Bright Pro Electric (San Diego, updated Sep 2026).
How common is it? (small sample)
28 residential electrical permits on 17 parcels in the City of San Diego mentioned a 400-amp service between Jan 1 and Oct 15, 2026. Several were a new 400A main feeding a house plus an ADU. This is a small sample; use it to see the pattern, not to predict a price.
Permit and SDG&E
The City's $176.57 fee covers residential service up to 200 amps; above 200 amps the fee is different, so ask your electrician for the exact City fee before you sign. Going above 200A usually needs an SDG&E service request and a longer lead time.
What triggers it (measured)
| First permit on the parcel | Panel upgrade followed after (median) | Parcels |
|---|---|---|
| Kitchen remodel | 33 days | 11 |
| ADU | 68 days | 23 |
| HVAC / heat pump | 69 days | 5 |
City of San Diego 2026 permits on the same parcel. Small samples (5–23 parcels): treat as a guide, not a forecast.
Frequently asked questions
How much does a 400 amp panel upgrade cost in San Diego?
Published local pricing for 200A to 400A is $4,500–$8,500 installed.
Who needs a 400 amp service?
Usually large homes or homes adding an ADU, EV charging, a pool and a heat pump together. A load calculation decides.