Markham's tech corridor and business parks — home to major tech and manufacturing employers — sit alongside historic Unionville and newer family communities like Cornell. That combination means ESS regularly handles both commercial electrical work for Markham offices and light-industrial spaces, and residential panel upgrades, EV charger installs, and rewiring across Markham's mix of century homes and modern subdivisions.
100A to 200A upgrades for Markham homes, code-compliant and ESA inspected.
Learn more →24/7 emergency electrical response across Markham and surrounding areas.
Learn more →Yes — we handle commercial electrical work across Markham's business parks and office spaces, from tenant fit-outs to general maintenance and upgrades, alongside our residential work.
Most modern Markham homes with EV charging and central air are comfortable on 200A service, though homes with additional high-draw features may need load management or a higher-capacity setup. We calculate this precisely during your estimate.
More electrical questions answered on our Answers page.
Call now for same-day service, or request a free written quote online.
