How Much Should a Contractor Spend on Ads?

The contractor who spends nothing on ads tells himself referrals are enough - right up until they are not. The contractor who spends without a system watches his card get charged every month for clicks that go nowhere. Both are losing. (Figures in this post are in USD - the model and the math are identical in any currency.)

This is really a conversation about construction arbitrage - the model where you are the general contractor (main contractor in the UK) on paper and the operator running the margin machine in practice. In arbitrage, the ad budget is not a cost. It is a lever. Pull it the right amount and the machine pays for itself ten times over. Pull it wrong and you are funding Google's shareholders instead of your own account. Here is how to get the number right.

The baseline: what the data says contractors should spend

The US Small Business Administration's standing recommendation for businesses under $5 million in revenue is 7 to 8 percent of revenue for marketing - assuming your margins sit around 10 to 12 percent. If your margins are thinner, that number has to come down or it eats your profit. That is the baseline. But construction is not an average industry.

Construction companies across the board spend less on marketing than most other industries. A heavily referral-based established business might run at 2 to 5 percent. A general contractor (or main contractor in the UK) actively trying to add $500,000 to their top line in the next 12 months needs to be in the 7 to 12 percent range. And a business in its first two to three years, building a pipeline from scratch, typically needs 12 to 15 percent just to get noticed.

Budget off your target, not your current revenue

This is the single mistake that keeps most contractors flat. If you made $800,000 last year and you want to reach $1.5 million next year, your ad budget should be sized against $1.5 million, not $800,000. Budgeting off where you are now is how you fund staying exactly where you are.

What each channel costs a contractor in 2026

Different channels have very different cost structures. Here is what the numbers look like in 2026 across the three channels that actually move the needle for most contractors.

Google Search Ads

The cross-industry average cost per click on Google Search was around $5.42 in 2026, based on WordStream's benchmarks across over 13,000 campaigns. Construction and home services terms, especially in competitive metros, run higher - plan for $6 to $12 per click on high-intent keywords like 'kitchen remodel [city]' or 'general contractor near me'. At $2,000 a month and a $7 average CPC, you are buying roughly 285 clicks. If your page converts 10 percent to a booked call and you close one in three, that is around nine to ten signed jobs per month from one channel.

Google Local Services Ads (LSAs)

LSAs charge per lead, not per click - so you are only paying when someone actually calls or messages. Based on 99Calls data from May 2026, general contractors pay a median of around $75 per charged lead, with a range from $39 at the low end to over $200 in competitive markets. LSA adoption has surged among contractors - from around 28 percent in 2022 to an estimated 70 percent by late 2025 - so the platform is more competitive than it was two years ago. Still the best unit economics for emergency and phone-first work. Budget $800 to $2,000 a month to generate enough lead volume to judge performance.

Meta (Facebook and Instagram) Ads

In 2026, construction contractors running Meta lead generation campaigns typically pay $35 to $120 per lead. Simpler trades sit at the lower end; high-ticket work like roofing, pools or full remodels runs higher. Meta leads are colder than Google - the person was not typing 'contractor near me', they were scrolling. Expect an 8 to 15 percent lead-to-job conversion rate from Meta forms. Connecting your lead form to a CRM and using Meta's 'conversion leads' objective can reduce cost per qualified lead by as much as 15 percent according to Meta's own testing. Start with $1,000 to $1,500 a month for 60 days before scaling.

The one metric that makes the budget question irrelevant

Stop asking 'how much should I spend' and start asking 'what is my cost per booked job versus my margin per booked job'. That ratio is the only number that matters.

A $10,000 ad budget that returns $60,000 of margin is not expensive. A $1,000 ad budget that returns nothing is infinitely expensive. The number itself is not the problem. The system that turns the click into a signed job is the problem or the prize.

What kills the return before the campaign even starts

The campaign is rarely where the money leaks. Here is where it actually goes:

• Not answering the phone. Studies inside the home services vertical consistently show the majority of leads that ghost went to whoever picked up first. If you cannot answer within ten minutes, do not run ads at all.
• Sending clicks to your homepage. A homepage is a menu. A landing page is a checkout. Every service should have its own page. 'Kitchen remodel [city]' clicks go to a kitchen remodel page - not your logo.
• No follow-up system. Most leads do not book on the first call. A contractor with a three-touch follow-up converts the same leads a manual-dialler abandons. This is where building a lead system pays ten times over.
• Measuring cost per click instead of cost per booked job. Your ad platform wants you to celebrate low CPCs. Your bank account only cares about margin.
• Underspending below the learning threshold. Most platforms need 50 conversions in a month to exit the learning phase and start optimising. At $200 a month you are paying for data you will never act on. Commit or do not start.

The ad is ten seconds of a system that has to end in a signed contract. Budget accordingly.

How to split the budget across channels

If you are starting with $2,000 to $3,000 a month, pick one channel and go deep before you diversify. Most contractors do best starting with Google - either Search or Local Services Ads depending on whether your work is planned (Search) or phone-first (LSA). Add Meta once the first channel is returning. Adding a third channel before the first two are stable is how you get three mediocre results instead of one strong one.

Once you are past $5,000 a month in ad spend, a rough split that works for most general contractors is: 50 percent Google Search or LSA for the hot intent, 30 percent Meta for the discovery and retargeting, and 20 percent for SEO, review generation, or whatever channel is showing the strongest signals in your market. Adjust based on your actual cost per booked job - not gut feeling, not what the agency recommends. See the best-performing ad types for contractors in 2026 for a full channel comparison.

The bottom line

The right contractor ad budget is not a fixed number. It is a ratio: spend against margin. The SBA baseline of 7 to 8 percent of revenue is a sensible starting anchor for an established business. New operators need to run at 12 to 15 percent to build a pipeline. The channel mix changes the unit economics - Google LSAs for phone-first work, Search for planned remodels, Meta for cold discovery - but the rule is the same everywhere: commit enough to exit the learning phase, answer the phone, and measure cost per booked job. Everything else is a distraction.

The operators who make ads work for their construction businesses are not spending more. They are spending with a system. That system is what construction arbitrage is built on - an operator running the machine, not a tradesperson chasing jobs.