Building Inspection Break-Even: $315K Monthly Revenue And 61 Jobs

Fixed costs $4.9K Monthly overhead

Contribution margin 73% After variable costs

Break-even revenue $6.7K Monthly target revenue

Break-even timing Month 10 Model break-even

Break-even calculator

Test whether monthly inspection revenue covers direct costs and the fixed overhead the business carries.

Lean Base Full

Monthly revenue Use the monthly top line before any costs. $ Light month Busy month Variable expenses Use direct costs that rise with inspections, like fuel, supplies, and lead generation. $ Low spend High spend

Money available to cover fixed costs $15,184 $20,800 revenue - $5,616 variable expenses

Margin ratio

73%

Covers fixed costs

$6,916 short

Fixed monthly costs Use rent, insurance, payroll, software, and other overhead that stays due each month. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which building inspection expenses are fixed, variable, or semi-fixed for break-even?

Cost classification

For this inspection service, break-even is reliable only if monthly overhead stays separate from revenue-linked job costs. Treat rent and insurance as fixed, fuel and lead generation as variable, and payroll or budgeted marketing as capacity decisions.

Expense	Cost	Break-Even Treatment	Common Mistake
Office Rent ($2,500/month)	Fixed	Include in monthly overhead from Month 1 through Month 60.	Allocating rent per inspection and understating the volume hurdle.
Professional Liability Insurance ($500/month)	Fixed	Carry as a stable monthly charge before contribution margin.	Moving insurance into per-job expense when it does not scale by inspection.
Accounting & Legal Retainer ($750/month)	Fixed	Model as fixed overhead across the planning range.	Dropping the retainer until a legal issue appears.
Vehicle Fuel & Per-Inspection Supplies (8% of revenue in first year)	Variable	Subtract from revenue when calculating contribution margin.	Treating mileage and job supplies as office overhead.
Online Ad Spend & Lead Generation (12% of revenue in first year)	Variable	Tie directly to booked revenue in the break-even model.	Confusing lead spend with the approved annual marketing budget.
Inspector Certification & Licensing Fees (3% of revenue in first year)	Variable	Apply the stated revenue percentage before fixed overhead.	Spreading the fee evenly and ignoring the model’s percentage assumption.
Inspector Payroll	Semi-fixed	Add in staffing blocks as inspector capacity expands.	Modeling every inspector hour as variable labor.
Annual Marketing Budget ($15,000 in first year)	Semi-fixed	Use approved budget steps, rising to $85,000 by the fifth year.	Letting spend float without a cap or approval trigger.

How does break-even change as the inspection team moves from lean to full capacity?

Scenario table

Fixed costs drive the gap. The lean setup clears with less revenue, while the base and full setups need more monthly volume, even though the variable cost rate stays close to revenue.

Planning assumptions only; attach work and local demand can move results.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean owner-led model	$20,411	$5,511	$14,900	73.0%	$0	Lowest fixed load, so break-even is easiest here.
Base owner-plus-inspector model	$31,541	$8,516	$23,025	73.0%	$0	This matches the model's Month 10 break-even signal.
Full Year 2 staffed model	$47,628	$11,483	$36,150	75.9%	$0	Higher payroll means the team needs fuller calendars to stay safe.

What breaks the break-even plan for a building inspection service?

Stress test

The base plan is thin: $31,541 monthly revenue only matches $23,025 of fixed costs at a 73% contribution margin. A 15% booking miss, higher trip costs, or added overhead pushes it below break-even fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change; revenue stays at $31,541 and variable costs stay at 27%.	$31,541	$0 cushion	No slack if bookings slip.
Revenue shortfall	Monthly revenue falls 15% to about $26,810.	$31,541	$4,731 gap	A weak booking month turns profit into loss.
Fixed-cost pressure	Fixed costs rise 10% to about $25,328.	$34,695	$3,154 gap	Added overhead needs more billed work.
Margin pressure	Variable expense rate rises 5 points to 32%.	$33,860	$2,319 gap	Trip and supply costs eat the cushion.
Combined pressure	Revenue falls 15%, variable costs rise to 32%, and fixed costs rise 10%.	$37,247	$10,437 gap	Soft demand plus cost creep drives a monthly loss.

Can this building inspection service hit break-even before you lock in the lease, vehicles, and first hires?

Founder checklist

If the business can truly support 61 inspections a month, keep pricing at the stated rates, and cover the $4.8K monthly fixed load, the break-even case is real. Otherwise, wait on the lease and the second vehicle.

1Demand path61/mo

Verify you can book 61 inspections a month before adding overhead, because that is the volume path behind the break-even plan.

2Fee math73% CM

Check the price math: residential is 3 hours × $120 = $360, commercial is 8 × $180 = $1,440, ancillary is 15 × $150 = $225, and re-inspection is 1 × $100 = $100; after 3% certification, 4% software, 8% fuel and supplies, and 12% paid leads, Year 1 leaves about 73% contribution margin.

3Core overhead$4.8K/mo

Keep monthly fixed costs near $4.8K, with office rent capped at $2,500 and liability insurance at $500, and delay the second SUV until route density supports another $35,000 buy.

4Hiring rampMonth 25

Hold the junior inspector until booked work can cover the extra $55,000 salary, because pulling that hire forward can erase early break-even progress.

5Cash cushion$716K

Stress test the plan against the $716K minimum cash point in Month 19, because payback does not show up until Month 34.

6Launch spend$150 CAC

Cap early paid leads near $150 CAC and test the reporting software before volume, so acquisition spend does not outrun the first jobs.