Greenhouse Manufacturing Break-Even Analysis: About $108K/Month

Fixed costs $83.1K/mo Overhead base

Contribution margin 77% After variable costs

Break-even revenue $108.2K/mo Revenue needed

Break-even timing Month 1 Coverage begins

Break-even calculator

Use this calculator to test monthly revenue, variable expenses, and fixed costs against break-even.

Lean Base Full

Monthly revenue Monthly sales set the contribution available to cover fixed costs. $ Low sales High sales Variable expenses Direct materials, labor, commissions, and fees rise with sales. $ Lean cost Heavy cost

Money available to cover fixed costs $3,081,300 $3,918,333 revenue - $837,033 variable expenses

Margin ratio

79%

Covers fixed costs

Yes

Fixed monthly costs Rent, payroll, and overhead stay on the cost base each month. $ Tight base Large base

Break-even chart Revenue Total costs

Which greenhouse manufacturing expenses are fixed, and which move with sales?

Cost classification

Break-even is only reliable when fixed overhead stays separate from unit-level costs. In the first year, $12,000 monthly rent behaves very differently from materials, sales commissions, and payment fees.

Expense	Cost	Break-Even Treatment	Common Mistake
Office & Factory Rent	Fixed	Model as $12,000 per month from Month 1 through Month 60 before calculating contribution margin.	Allocating rent per unit and making break-even move with production volume.
Business Insurance	Fixed	Include as $1,000 per month in overhead coverage, not in unit economics.	Dropping insurance from break-even because it does not scale with each build.
Software Subscriptions	Fixed	Treat the $800 monthly subscription load as recurring overhead across the planning range.	Spreading software across units and overstating variable margin pressure.
Direct Materials and Packaging	Variable	Classify framing, panels, hardware, and packaging as per-unit inputs that rise with each structure produced.	Using one blended material rate across small, large, and custom structures.
Assembly and Integration Labor	Variable	Use the per-unit labor amounts in contribution margin because labor hours are tied to completed units.	Treating all labor as fixed and overstating contribution margin.
Sales Commissions	Variable	Deduct commissions from revenue; the rate starts at 3.0% in the first year and declines to 2.5% by the fifth year.	Ignoring commissions when calculating contribution margin.
Utilities and Factory Power	Semi-variable	Split the $2,500 monthly base from production-linked factory utility usage that rises with throughput.	Booking the full utility bill as fixed overhead.
Manufacturing Supervision	Semi-fixed	Model supervisor payroll in capacity steps, rising from 1.0 FTE in the first year to 3.0 FTE by the fifth year.	Treating supervisors as variable direct labor on every unit.

How does break-even change across lean, base, and full greenhouse manufacturing scenarios?

Scenario table

Break-even moves with sales mix and plant load. The lean launch sits near the line, Year 1 planned production has a solid cushion, and Year 5 scale absorbs fixed costs much faster.

Planning assumptions only; these figures show model-based break-even ranges, not a promise of future results.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch mix	$108k	$25k	$83k	76.8%	$0	Near break-even; one weak month can flip it negative.
Year 1 standard run	$1.03M	$239k	$92k	76.8%	$698k	Above break-even; the launch ramp still needs cash control.
Year 5 full-throughput plant	$7.30M	$1.44M	$139k	80.3%	$5.72M	Wide cushion at scale, but custom research jobs need tight scheduling and QC.

What pressures could push greenhouse manufacturing past break-even?

Stress test

Here’s the quick math: Year 1 sales average about $1.03M a month, while break-even sits near $108K. The cushion is strong, but it can shrink fast if large orders slip, overhead rises, or commissions jump.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$108K	$921K cushion	Sales stay far above break-even, so timing and mix matter most.
Revenue miss	Year 1 monthly sales run 30% below plan.	$108K	$613K cushion	Delayed large orders still leave room, but the cushion thins fast.
Fixed cost rise	Office, payroll, and overhead rise 20% to about $100K a month.	$129K	$900K cushion	Higher plant overhead raises the sales floor and cuts flexibility.
Margin pressure	Sales commissions jump to 30% of revenue.	$167K	$862K cushion	Channel fees push break-even up even if units sold hold.
Combined pressure	Sales fall 30%, fixed costs rise 20%, and commissions jump to 30%.	$200K	$520K cushion	Low plant use and fee pressure narrow the safety buffer at once.

What should a greenhouse maker verify before signing the lease and buying equipment?

Founder checklist

Before you sign the lease or place equipment orders, test the deal against break-even assumptions. Fixed payroll and overhead run about $83.1K a month, and minimum cash is $1.06M, so orders need to show up before capacity does.

1Launch demand2,755 units

Confirm signed orders or a real pipeline can cover the Year 1 mix of 2,755 units before you lock the plant, because capacity without demand just adds fixed cost.

2Fixed load$83.1K/mo

The opening-month salary and overhead base is about $83.1K/mo, so break-even needs real order flow, not just a full shop floor.

3Contribution76.8% CM

Verify the blend still clears about 76.8% contribution margin after direct unit costs, product overhead, commissions, and card fees, or the fixed load won't clear.

4Plant fit$1.01M capex

Check that framing, glazing, packaging, storage, loading, and quality checks fit the site before spending the planned $1.01M on equipment, leasehold, racking, vehicles, ERP, and buildout.

5Staffing ramp7 roles

Keep the 7 salaried roles tied to booked work, because Year 1 payroll already runs about $58.3K/mo before sales commissions.

6Cash cushion$1.06M

Hold the $1.06M minimum cash cushion and verify deposits, lead times, and installation scope before ramp-up, since Month 1 is the minimum-cash point.