There's no single "best" web designer for contractors in southern Ontario. These are the options that came up in my search, grouped by who they suit. I haven't checked their work or reviews myself, so look at their portfolios and ask for references from other contractors before you hire anyone.

**Agencies that focus on trades and contractors**
- **Primate Web FX** says it has about 20 years of experience building sites for electricians, HVAC companies, plumbers, roofers and general contractors across Canada. It describes its sites as mobile-first and SEO-optimized, built to bring in calls and quote requests.
- **HOMESHOWOFF** is in Vaughan. It works with construction trades and says it has done 400+ projects. A directory listing puts its budgets at roughly $1,000–$10,000, with an average rate of about $75/hr.
- **Kinex Media** has a Toronto team and has done website redesigns for contractor organizations.
- **Contractor Websites** builds sites for Canadian contractors and offers SEO and online marketing.
- **Evergreen Digital Marketing** does websites and SEO for trades, B2B and professional services in Ontario.

**Local to Kitchener-Waterloo**
- **REM Web Solutions** says it has worked in KW since 2001. It offers custom websites, SEO, pay-per-click ads and content writing.
- **Smola Designs** has served KW for over 15 years. It also does marketing, drone photography and graphic design.
- **The Story Web Design & Marketing** has offices in Toronto and Kitchener.

**Budget option**
- **Contractor Site Design** advertises a flat $999 five-page site that goes live in 5 business days. Check what's included, such as hosting, SEO and ongoing support.

**What to look for**
- Examples of sites they've built for trades, and whether those sites rank in Google Maps and local search.
- Mobile speed, click-to-call buttons and quote forms.
- Who owns the site and domain if you leave.
- Whether SEO and your Google Business Profile are included. For most contractors these bring in more leads than the design itself.

For a local relationship, start with the KW agencies. If you want deep trades experience, start with the trades-focused ones. Get quotes from two or three either way.

SOURCES:
https://agencyapp.dmbx.aws.gartner.com/ca/web-design/kitchener
https://themanifest.com/ca/web-design/agencies/ontario
https://techbehemoths.com/companies/web-design/kitchener
https://searchenginepeople.com/best-web-design-company-toronto
https://www.designrush.com/agency/profile/homeshowoff
https://agencyspotter.com/primate-web-fx
https://www.g2.com/sellers/contractor-websites
https://www.kinexmedia.com/contractors-website-design/