How long does it take to reduce cost per lead on Google Ads?

Meaningful improvements take 60–90 days. The first 30 days are data collection. Days 30–60 are initial optimisation (adding negative keywords, adjusting bids, testing landing page changes). Days 60–90 show whether changes are producing improvement. Campaigns that declare failure before 90 days often haven't given the optimisation process enough time to produce measurable results.

Should I manage Google Ads myself or hire an agency?

If you have time to learn the platform properly and can commit 4–6 hours per week to campaign management, self-management is viable for simpler campaigns. For contractors with multiple service lines, multiple geographies, or budgets over $2,000/month, professional management typically pays for itself through better Quality Scores, more disciplined negative keyword management, and faster bid optimisation than a part-time approach produces.

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How to Reduce Google Ads Cost Per Lead

The two levers that most reduce cost per lead: improving landing page conversion rate (getting more leads from the same clicks) and improving Quality Score (paying less per click for the same position). Both require data — at least 30 days of campaign history — before you have enough to optimise meaningfully.

Landing page conversion rate is usually the highest-impact lever. A landing page converting at 4% and a page converting at 8% have the same cost per click but half the cost per lead. For most contractor campaigns, landing pages are the weakest link: they send traffic to homepages (which don't specifically address the service in the ad), have too much information without a clear primary action, or don't show phone numbers prominently for users who want to call directly rather than fill a form.

Negative keywords eliminate wasted spend. If you're an Edmonton HVAC contractor and someone in Calgary or Toronto clicks your ad, that's wasted spend. If someone searches 'HVAC technician jobs' and clicks your service ad, that's wasted spend. Adding negative keywords (competitor names, job-related terms, geographies outside your service area, DIY-related terms) can reduce wasted spend by 15–30%.

Quality Score improvements: ad copy that matches the query closely and landing pages that deliver what the ad promises both raise Quality Score. Higher Quality Score means paying less per click for the same ad position — a Quality Score improvement from 5 to 8 (on Google's 10-point scale) can reduce cost per click by 30–40%. The levers: write ad copy that includes the exact search term, and send clicks to a landing page that specifically addresses what the ad promised.

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