Basement Waterproofing Break-Even Point: About $61K/Month

Fixed costs $39.6K/mo Core overhead

Contribution margin 72% After variable costs

Break-even revenue $54.9K/mo Zero-profit target

Break-even timing Month 3 Model break-even

Break-even calculator

Test how monthly revenue, direct costs, and overhead set the break-even point for basement waterproofing.

Lean Base Full

Monthly revenue Revenue sets the cash left after direct costs. $ Lower sales Higher sales Variable expenses Materials, crew labor, and fuel move with each job. $ Low direct High direct

Money available to cover fixed costs $176,400 $245,000 revenue - $68,600 variable expenses

Margin ratio

72%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead contribution margin has to cover. $ Low overhead High overhead

Break-even chart Revenue Total costs

Which expenses are fixed and which move with sales for a basement waterproofing business?

Cost classification

Break-even gets unreliable when job-linked expenses are treated like overhead, or fixed bills are spread too neatly across each job. Classify the costs first, then test volume with clean math.

Expense	Cost	Break-Even Treatment	Common Mistake
Material Costs	Variable	Use 15.0% of revenue in the first year.	Treating bulk purchases as fixed overhead.
Direct Installation Labor	Variable	Use 10.0% of revenue in the first year.	Mixing crew payroll with job-level labor.
Vehicle Fuel & Project-Specific Maintenance	Variable	Use 3.0% of revenue in the first year.	Ignoring longer drive times between jobs.
Warehouse Rent	Fixed	Include $3,500 per month from Month 1.	Assuming rent scales with booked jobs.
Business Insurance	Fixed	Include $800 per month from Month 1.	Forgetting it stays due in slow months.
CRM & Project Management Software	Fixed	Include $600 per month from Month 1.	Treating subscriptions as job costs.
Utilities (Warehouse & Office)	Semi-variable	Start with the $750 monthly baseline, then watch usage creep.	Missing higher usage as crews and jobs grow.
Marketing Budget	Semi-fixed	Plan $50,000 in the first year, or about $4,167 per month.	Assuming every lead source flexes cleanly with sales.

How does break-even change from a lean opening plan to a full crew plan for basement waterproofing?

Scenario table

At a $3,600 average job value in Year 1, break-even turns on job volume because fixed costs stay heavy while variable costs move with each job. The 72% contribution margin means the base plan is just over the line, while lean still loses money and full adds cushion.

Planning figures only; actual results can move with job mix, pricing, and cost control.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean opening ramp	$43,200	$12,096	$43,717	72%	($12,613)	Still below break-even, so cash burn remains.
Base break-even plan	$61,200	$17,136	$43,717	72%	$347	Right at break-even, with only a thin cushion.
Full crew utilization	$86,400	$24,192	$43,717	72%	$18,491	Above break-even, so volume creates real margin.

What breaks the break-even plan when demand softens or costs rise?

Stress test

The base plan has only about a $482 cushion on $61,200 revenue, so it is close to the line. A 10% sales drop, a 10% overhead jump, or a move to 33% variable costs turns that cushion into a loss fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$60,718	$482 cushion	The cushion is thin, so a small dip can erase profit.
Revenue shortfall	Revenue falls 10% to $55,080.	$60,718	$5,638 gap	Lower close rates or fewer booked inspections push it below break-even fast.
Fixed-cost pressure	Fixed costs rise 10% to $48,088.	$66,789	$5,589 gap	Higher overhead needs more revenue just to stand still.
Margin pressure	Variable expenses rise from 28% to 33%.	$65,251	$4,051 gap	Higher material prices or callbacks cut contribution hard.
Combined pressure	Revenue falls 10%, variable expenses rise to 33%, and fixed costs rise 10%.	$71,773	$10,573 gap	That mix turns a small cushion into a deep loss.

Can the first service area support enough basement waterproofing jobs to justify the warehouse lease, vans, and crew?

Founder checklist

Test the break-even math before you sign the lease or buy the vans. With $198,000 of opening spend, $9.55K of fixed costs a month, and minimum cash peaking at $738,000 in Month 2, the deal only works if demand, pricing, and crew coverage all hold together.

1Demand proof17 jobs/mo

Verify the first service area can book at least 17 jobs a month and still support a $3,600 average job value from the four service lines.

2Fixed load$9.55K/mo

Delay the warehouse lease and van lease until booked work can carry the $3,500 rent, $2,500 fleet payment, and the rest of the overhead.

3Contribution72% CM

Check supplier pricing near 15% materials, then add 10% variable labor and 3% fuel so each job leaves enough margin to cover fixed costs.

4Crew ramp$30K/mo

Confirm installer availability before you carry the Year 1 payroll run rate, because the core team costs about $30,000 a month.

5Lead flow143/yr

Test paid lead flow against the $50,000 Year 1 marketing budget and $350 CAC, which only points to about 143 customers a year.

6Cash reserve$738K

Keep enough cash for the $198,000 opening spend and later equipment buys, because minimum cash peaks at $738,000 in Month 2.