Facebook ads for a Bemidji plumber don't behave like Facebook ads for an LA marketing course. Different math, different audiences, different timelines. So before you set a budget or judge the campaign, you need to know which number actually tells you whether the ads are working.
Almost every local owner who's ever asked me about Facebook ads is asking the same underlying question: "Will this work for my business, or am I about to set $1,500 on fire?" Fair question. The answer depends on three things very few owners calculate upfront: what you're willing to spend to learn, what a customer is actually worth to you, and whether you're judging the campaign on the right number.
Whether Facebook ads are useful depends on the offer, audience, budget, customer value and ability to measure the work. It is reasonable to review those questions before agreeing to a test.
Budget: agree what the test needs to answer
Set a budget around the audience, the decision being tested and the amount the business can afford to spend without a guaranteed return. There is no single daily minimum that makes every local campaign useful.
Competition and audience size vary between Bemidji, the Twin Cities, Duluth and Fargo. A budget should reflect the actual campaign rather than a fixed multiplier for a larger town.
Agree the test period and review points before launch. Stop, continue or change the work based on the evidence, delivery problems and the business’s ability to carry the cost.
Compare customer value with the full acquisition cost.
Customer lifetime value compared with customer acquisition cost can be useful when repeat business matters. It should be considered alongside cash flow, margins, capacity and the time taken to recover the spend.
For example, spending $1,500 on ads that bring five attributed new customers gives an advertising cost of $300 per customer. The full acquisition cost may also include management and other selling costs. Compare that with the profit the business can reasonably expect, using a defined period and supportable assumptions.
There is no universal ratio that makes a campaign safe to scale. Consider the reliability of the figures, cash needed to fulfil the work, available capacity and how long it takes customers to pay.
Lifetime gross profit, not gross revenue. This is where most people get it wrong.
A roofer doesn't have $14,000 of value sitting in a new customer just because the job was $14,000. Materials and labor and overhead might be $10,000 of that. The actual gross profit is $4,000. That's your real LTV, not the invoice total.
The other side of this is repeat business. A homeowner who gets a new roof isn't likely to need another one for 20 years, but they might also be your gutter guy, your siding guy, and the person who refers two neighbors over the next five years. A plumber's LTV looks different again, the first call is $400, but the same homeowner calls you for the next 15 years, every 2-3 years on average, for everything from a water heater to a sump pump. That's where the real LTV is.
Use the business’s own records to estimate customer value:
- For one-off work, start with profit on the job rather than the invoice total.
- For repeat services, use documented repeat purchases and a sensible time period.
- For referrals or future projects, separate recorded work from estimates that may never happen.
Work backwards from supportable customer profit and the costs the business can carry. A high invoice value alone is not a reason to spend more on ads.
The trap of judging by leads or even closed deals in month one
As an illustration, an owner might spend $1,200, receive 12 customer contacts and book two paid jobs. That is $600 in ad spend per booked customer at that point. It is not yet a complete profit calculation.
Check whether the other contacts are still considering the work and record what actually happens. Further jobs or lower future costs are possibilities to measure, not results to assume.
If you can't tolerate three months of feeling like the numbers don't quite work, paid social is probably not your channel. That's not a judgment, it's just true. For a lot of local businesses, organic Google traffic plus a tight referral loop is a better fit than paid acquisition, full stop.
Honest expectations for a Bemidji-area service business
Set expectations from the business’s own numbers and the agreed test:
- The total test budget, including management and any production costs.
- The calls, messages and quote requests that can be attributed to the campaign.
- Which contacts become paid jobs, and which outcomes remain unknown.
- The cost per paid customer, using a defined period.
- The profit from completed work, with future repeat business kept separate.
- The review dates and the evidence that would justify continuing, changing or stopping.
If the results differ from expectations, review the evidence before deciding what caused the difference. The useful recommendation could concern the ad, website, offer, response process or whether paid advertising fits the business.