How many solar & energy upgrades contractors are in DURHAM, CA?

2 with a current California license, as of 2026-08-31.

How do I check a California contractor license is current?

Every listing shows its state license number and expiry date. Verify any of them directly against the California CSLB licensee database.

Solar & Energy Upgrades contractors in DURHAM, CA

2 listings

Source: California CSLB license records. Last verified 2026-08-31.

There are 2 solar & energy upgrades contractors in DURHAM, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2027-04-30; every listing shows its own number and expiry date. All are drawn from the California CSLB register; expired and inactive licenses are excluded.

Business	License	Type	Expires	City	Zip
MARKS SOLAR INC	701317	B, C-46	2027-04-30	DURHAM	95938	Set up workspace
SHEPARD & SUN SOLAR INC	1074814	C-46	2028-08-31	DURHAM	95938	Set up workspace

Quick answers

How many solar & energy upgrades contractors are in DURHAM?: 2 with a current California license, as of 2026-08-31.
How do I check a license is current?: Every listing shows its state license number and expiry. Verify any of them directly against the California CSLB licensee database.