Quick answer
What should contractors know about Lead Buying Cost Calculator for Contractors: Know If Paid Leads Are Making Money?
A practical calculator-style guide for contractors to evaluate Angi, Thumbtack, HomeAdvisor, LSAs, ads, and other paid lead sources by booked jobs and gross profit.
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Paid leads are not expensive because the invoice is high. They are expensive when contractors measure the wrong thing.
Cost per lead is the starter number. Cost per booked job is the number that matters.
Lead Buying Cost Calculator for Contractors
The quick formula
Use this:
Cost per booked job = total lead spend / number of booked jobsThen compare it to gross profit:
Gross profit per job = average ticket × gross marginIf cost per booked job eats too much gross profit, the channel is weak even if the lead price looks reasonable.
Example: shared lead site
Imagine this month:
- spend: $1,500
- leads: 30
- booked jobs: 5
- average job: $900
- gross margin: 45%
Cost per lead is $50. That sounds fine.
Cost per booked job is $300.
Gross profit per job is $405.
That means the lead source is taking 74% of gross profit before overhead. That is dangerous unless repeat work is strong.
Example: high-ticket work
Now change the average job to $4,500 with the same margin.
Gross profit per job is $2,025. A $300 acquisition cost may be acceptable if crew capacity and cash flow are healthy.
This is why generic “good cost per lead” advice is mostly useless.
Inputs to track
Create a simple sheet with these columns:
- source
- month
- spend
- leads
- booked jobs
- average ticket
- gross margin
- cost per lead
- cost per booked job
- gross profit per job
- payback notes
- repeat/referral notes
If a source cannot be tracked to booked jobs, do not scale it.
Red flags
A paid lead source is probably hurting you when:
- close rate is low because customers are price shopping
- disputes/refunds are common
- response speed has to be instant but your office cannot keep up
- jobs are too small for the acquisition cost
- crews are busy with low-margin work
- reviews from that source are worse than organic/referral jobs
What to compare it against
Paid leads should compete against owned channels:
| Channel | Cost behavior | Control | Notes |
|---|---|---|---|
| Local SEO | Slow upfront, compounds | High | Best long-term margin |
| Google Business Profile | Low cost, ongoing effort | High | Strong local intent |
| Referrals | Low cost | High | Highest trust |
| Email/SMS follow-up | Low cost | High | Closes existing demand |
| Shared lead sites | Ongoing cost | Low | Fast but competitive |
| LSAs/PPC | Ongoing cost | Medium | Scalable if tracked |
Use the monthly marketing budget calculator to decide how much risk to allocate.
Minimum tracking rule
Before spending more next month, answer these questions:
- How many jobs did the source book?
- What was the average ticket?
- What was gross profit?
- How fast did we respond?
- Were customers good-fit?
- Did any become repeat/referral customers?
If you cannot answer those, your marketing budget is guessing.
My take
A lead source is not good because it produces leads. It is good when it produces profitable, repeatable, good-fit jobs without damaging your schedule or brand.
If your numbers are weak, fix follow-up first with the missed-call recovery script and estimate follow-up templates.
Source and calculation notes
How to use the numbers in this guide
Pricing, lead-cost, labor, and cash-flow examples are planning estimates, not financial advice. Replace assumptions with your own job costs, close rates, payroll burden, overhead, and booked revenue before making a decision.
- Primary inputs: owner-provided costs, average job value, gross margin, close rate, and monthly overhead.
- Best use: compare scenarios and find the next bottleneck to measure.
- Do not use for: tax, legal, payroll classification, or financing decisions without a qualified professional.
Scoring methodology
How ProTradeHQ scores contractor lead channels and buying decisions
Revenue impact
Does it improve booked jobs, close rate, collected cash, retention, or gross profit?
Operator fit
Can a small contractor team actually use it without adding complexity?
Speed to value
Can the business see useful results in days or weeks, not a six-month implementation?
Tracking clarity
Can calls, forms, estimates, booked jobs, and revenue be connected to the source?
Risk and lock-in
Are contracts, setup costs, data lock-in, shared leads, or workflow disruption reasonable?
Review snapshot
Lead Buying Cost Calculator for Contractors: Know If Paid Leads Are Making Money: pros, cons, price, and use case
Best for
Contractors comparing this option against other ways to win booked jobs or reduce operating friction.
Watch out for
Do not buy until you can track source, cost, close rate, booked revenue, and whether the team will actually use the workflow.
Price note
Check current vendor pricing before buying; software pricing and plans change often.
Use case
Use when it fixes a measurable workflow bottleneck.
Decision support
How to compare this option
| Factor | What to check | Why it matters |
|---|---|---|
| Fit | Match the tool or channel to your trade, job size, service area, and response speed. | Bad-fit leads and unused software are expensive even when the sticker price looks reasonable. |
| Cost | Track monthly cost, setup time, lead cost, and cost per booked job. | Revenue matters more than clicks, demos, impressions, or feature lists. |
| Proof | Look for real workflow proof, reviews, reporting, and source tracking. | If you cannot measure booked jobs, you cannot know whether it is working. |
People also ask
Is Lead Buying Cost Calculator for Contractors: Know If Paid Leads Are Making Money worth fixing first?
Yes if it is close to booked revenue. Prioritize the step that improves calls, quote requests, pricing, follow-up, reviews, or customer trust fastest.
What should contractors avoid?
Avoid adding more spend, software, or content before the basic handoff is working: clear offer, fast response, proof, pricing discipline, and source tracking.
What is the best next step?
Pick one measurable improvement, ship it this week, and track whether it increases booked jobs or reduces wasted time.
Methodology
How ProTradeHQ evaluates contractor tools and lead channels
We judge options by operator fit, booked-job economics, setup complexity, tracking clarity, and whether a small contractor can actually use the system without adding more chaos. We prioritize practical revenue impact over feature checklists.
Glossary shortcuts
Finance next step
Price the next job with real margin
Use the calculators and pricing guides to make sure labor, overhead, materials, and profit are all covered before you quote.
Use the pricing calculatorThe ProTradeHQ Team
We're veteran contractors and software experts helping the trade community build more profitable, less stressful businesses through practical systems that work in the field.