Mark was both professional and responsive. He returned phone calls and e-mails promptly. Mark was able to start the work within a week, and completed the upgrade job in 2 days for $1500, including the circuit breaker box, breakers, an outdoor meter pedestal, new grounding rods, etc. I was in the process of putting together a woodworking shop in the basement (which was the reason for the upgrade in service), so Mark had to work around a lot of obstructions (clutter), which he did without complaint. We then discussed my longer range plans regarding outlets for shop machinery, etc., which Mark agreed to do as a time/materials job. This worked out well for me as I already had a lot of the materials on hand. He also let me help by boring holes and pulling wires in order to keep the cost down. He suggested that we put in a sub-panel for the shop and run the shop circuits from there. He also came up with an innovative way to run the wires to the sub-panel. Mark provided the sub-panel, outlets, and some other parts, and with his labor (and mine), that portion of the job came in at around $1450. All in all, I had an excellent experience working with Mark, would recommend him to friends, and will be my first call for any electrical needs I have in the future.