Construction Cost Estimating Service Break-Even: $586K/Month

Fixed costs $40.2K/mo Payroll + overhead

Contribution margin 75% After variable costs

Break-even revenue $53.6K/mo Monthly target

Break-even timing Month 5 Model break-even

Break-even calculator

Test monthly revenue, variable expenses, and fixed costs against break-even for a construction estimating service.

Lean Base Full

Monthly revenue Revenue is the top line that covers direct costs and overhead. $ Low sales High sales Variable expenses These are direct costs that rise with each estimate or project. $ Low direct cost High direct cost

Money available to cover fixed costs $172,500 $224,000 revenue - $51,500 variable expenses

Margin ratio

77%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead contribution margin has to cover. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which expenses are fixed, variable, or volume-linked for a construction estimating service?

Cost classification

Break-even gets unreliable when fixed payroll and rent are mixed with revenue-linked fees. Classify each expense by how it behaves, so the Month 5 break-even point reflects real operating pressure.

Expense	Cost	Break-Even Treatment	Common Mistake
Professional estimating software licenses	Fixed	Carry as $2,200 per month from Month 1 through Month 60.	Treating software like per-project labor.
Estimator payroll	Fixed	Use first-year estimator capacity at $305,000 per year, or about $25,417 per month.	Moving salaried estimators into variable project costs.
Proposal prep labor, site visit travel, and subcontractor research	Semi-variable	Track the base workload separately from added effort tied to bid volume.	Assuming every proposal has the same delivery cost.
Office rent and utilities	Fixed	Carry as $3,500 per month regardless of monthly estimate volume.	Reducing rent when short-term sales dip.
Professional liability insurance	Fixed	Carry as $1,200 per month as required operating overhead.	Leaving insurance out of monthly break-even.
Cost data subscriptions and portal hosting	Variable	Apply 12% of first-year revenue: 8% data access plus 4% hosting.	Modeling usage-linked subscriptions as flat overhead.
Referral commissions and payment processing	Variable	Apply 13% of first-year revenue: 10% referrals plus 3% processing.	Counting gross revenue without sales-linked fees.
Telecommunications	Fixed	Carry phone and internet as $350 per month.	Spreading a fixed phone bill across each job.

How does break-even shift from a lean launch to a full-service estimating shop?

Scenario table

Break-even drops as revenue scale and margin improve, but fixed payroll and overhead still set the pace. The lean case tests demand, the base case shows operating cushion, and the full case depends on steady retainer work.

Planning cases only; actual results will move with project mix, pricing, staffing timing, and sales pace.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean staffed launch	$112K	$28K	$439K	75%	-$355K	Demand is real, but fixed cost load keeps this below break-even.
Base scaled estimator team	$3,177K	$667K	$729K	79%	$1,781K	This is the first clear cushion over break-even, with room to absorb slow months.
Full-service retainer capacity	$5,803K	$1,016K	$971K	82.5%	$3,816K	Strong margin cushion, but it needs steady contractor retainer volume to hold.

What breaks first if leads slow or overhead rises before project flow catches up?

Stress test

Year 1 covers break-even, but the cushion is only about $53.4K a month. If leads slow or referral-heavy work lifts variable costs, the model can slip fast; by Year 5, fixed monthly costs push break-even to about $129.4K.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$58,600/month	$53,400 cushion	Year 1 revenue stays above break-even.
Revenue shortfall	Average monthly revenue falls 50% from the Year 1 plan.	$58,600/month	$2,600 gap	A sharp lead drop nearly erases the cushion.
Fixed-cost pressure	Monthly fixed costs rise to about $97,000 in Year 5.	$129,300/month	$17,300 gap	Payroll and marketing outrun project flow.
Margin pressure	Variable expenses rise from 25% to 35% of revenue.	$67,600/month	$44,400 cushion	Higher referral and processing costs cut headroom.
Combined pressure	Fixed costs reach Year 5 levels and variable expenses rise to 35%.	$149,200/month	$37,200 gap	Sales and delivery efficiency both have to improve.

Can you prove enough booked estimating work before you sign the lease and add headcount?

Founder checklist

Only if the booked pipeline can clear a $53.6K monthly break-even line and cash holds through the Month 2 low point. The model points to $112K in average Year 1 revenue, a 75% contribution margin, and $812K minimum cash, so full overhead should wait.

1Pipeline$53.6K/mo

Verify booked work can clear the monthly break-even line, because the plan needs about $53.6K in revenue each month before you add more overhead.

2Fixed Load$40.2K/mo

Test the full fixed stack, including salaries and the $3.5K office line, so the lease does not outrun demand.

3Margin75% CM

Hold direct costs at 25% or less, since the model's 12% COGS and 13% variable spend must leave room for payroll and rent.

4Capacity6 / 15 / 20 hrs

Hire against booked hours, because residential estimates take 6 hours, feasibility reports 15, and retainer services 20, so turnaround can slip fast.

5Cash$812K

Keep cash above the Month 2 low point, because the model's minimum cash need is $812K and payback takes 9 months.

6CAC200 customers

Check that the $45K Year 1 marketing budget at a $225 CAC can buy about 200 customers, or don't scale spend yet.