Finding a Trusted General Contracting Contractor in Markham
Markham's housing stock ranges from 1980s-90s subdivisions around Unionville and Milliken to newer master-planned communities in Cornell and Wismer. This mix means general contractors here regularly navigate everything from dated 90s-era basements with low ceilings to modern builder-grade homes needing higher-end finishes. The city's large percentage of larger, multi-generational homes also drives steady demand for basement second suites, kitchen expansions, and whole-home renovations that accommodate extended families.
Markham's building permit process runs through the City of Markham's Building Standards department, and any structural, electrical, or plumbing work bundled into a general contracting project must meet Ontario Building Code requirements, with electrical work requiring ESA notification and gas-fired equipment requiring TSSA-licensed installers as subtrades. Because Markham has a high concentration of newer builds still under Tarion warranty, contractors working on homes under seven years old need to coordinate carefully to avoid warranty conflicts.
Our directory lists 7 verified general contractors serving Markham, including firms like P&O General Construction Inc, JackoContracting, UPPERAVENUE Construction Inc, TMD Home Construction, Astaneh Construction, 2x2 Construction, and SLG Contracting. Each listing includes licensing and insurance verification so homeowners in neighbourhoods from Berczy Village to Thornhill can compare local options with confidence before requesting quotes.
Across the GTA, basement renovations typically run $25,000–$55,000 depending on scope (bathroom additions, egress windows, finishing quality), while kitchen renovations range from $20,000–$50,000 based on layout changes, cabinetry grade, and appliance packages. In Markham specifically, larger home footprints and finished-basement second-suite requests often push projects toward the upper end of these ranges, particularly in newer communities like Cathedraltown and Cornell where homeowners frequently request higher-end finishes matching original builder specifications.
Top General Contracting Contractors in Markham
7 found#1JackoContracting - General Contractor
P&O General Construction Inc
UPPERAVENUE COnstruction Inc
TMD Home Construction
Astaneh Construction
2x2 Construction
SLG Contracting
Recent General Contracting Reviews in Markham
Jacko and his team did legal basement construction for me. His high attention to detailed was exactly what I was looking from a contractor. He was fair with pricing and work was done very organized and clean. Recommend to others who looking for a professional general contractor.
General Contracting Articles & Guides
Frequently Asked Questions
Do I need a permit for a basement renovation in Markham?
Yes, most basement renovations in Markham require a building permit from the City of Markham's Building Standards department, especially if you're adding a bathroom, bedroom, or second kitchen, or altering structural elements. A licensed general contractor will typically handle the permit application and coordinate required inspections.
My home in Cornell or Wismer is still under Tarion warranty. Does that affect a renovation?
It can. Structural or major system changes to a home still under its Tarion new home warranty period should be reviewed carefully, since certain renovations may affect warranty coverage. A reputable contractor will flag this and advise on documentation before starting work.
Can one general contractor manage electrical and gas work for a kitchen renovation?
A general contractor coordinates the project but must use ESA-notified electricians for wiring work and TSSA-licensed technicians for any gas line or gas appliance installation. Verified contractors on our Markham list work with licensed subtrades to keep these portions compliant.
How much does a general contracting cost in Markham?
Based on current GTA pricing data: Basement Reno typically runs $25000–$55000; Kitchen Reno typically runs $20000–$50000. General Contracting costs in Markham vary based on the scope of work, urgency, and contractor experience. Get free quotes from multiple verified contractors on GTA Trades Daily to compare pricing for your specific project.
How do I find a licensed general contracting contractor in Markham?
All contractors listed on GTA Trades Daily are categorized by trade and service area. Look for the "Verified" badge which indicates we have confirmed their licensing and insurance credentials with Ontario regulatory bodies.
What should I look for when hiring a general contracting in Markham?
Check for proper licensing (required in Ontario for general contracting), liability insurance, WSIB coverage, and a track record of positive reviews from Markham homeowners. Always get at least 3 written quotes before committing.