Cash flow for builders: profitable and broke at the same time

Deposits, allowances and long-lead items

Three specific mechanisms drain builder cash quietly, and each has a straightforward fix.

Long-lead deposits. Windows, cabinets, custom millwork and specialty equipment often require 50% at order, months before installation and before any draw covers them. The fix is a line in the contract requiring the owner to fund long-lead deposits on order rather than on installation. Owners accept this readily when it is explained as securing their own delivery dates.

Allowances that run over. The owner selects a $9,000 tile package against a $5,000 allowance. If the overage is not billed until the next scheduled draw, you have financed $4,000 of someone else's upgrade for six weeks. The fix is a contract term making allowance overages billable immediately upon selection.

Change orders performed before they are signed. The most common cash leak in residential construction. The owner asks, work proceeds, paperwork follows, and payment follows the paperwork. The fix is absolute and cultural: no signed change order, no work. Builders who enforce this find that owners sign quickly, because they want the work.

The thirteen-week forecast

Profit and loss statements tell you whether the business is working. They will not tell you whether you can make payroll in five weeks. Only a cash forecast does that, and thirteen weeks is the interval that matches construction's rhythm.

The structure is deliberately simple, updated every Monday in about thirty minutes:

Opening cash, then for each of thirteen weeks: expected receipts by job and by draw, with realistic dates rather than contract dates; expected outflows for payroll, subcontractors, material, overhead, loan payments and taxes; and closing cash.

Three disciplines make it useful rather than decorative:

Date receipts by when money actually arrives. If draws historically pay in eighteen days, use eighteen, not the contract's ten.

Include the items that are not job costs. Quarterly taxes, insurance renewals and equipment payments are exactly what surprises a builder who forecasts only project cash.

Look at the lowest week, not the ending balance. A forecast ending at $140,000 that dips to $9,000 in week seven is a forecast describing a crisis.

The value is not precision — it is warning. A builder who sees a tight week seven has six weeks to accelerate a draw, delay a purchase or draw on credit calmly. The same builder without a forecast discovers it on payroll Thursday.

One builder, two years

A residential builder doing custom homes and large remodels went through a growth year and then restructured.

Year one: revenue $3,180,000, net margin 8.4% — $267,120 in profit. Line of credit maxed at $250,000 for four months. Interest paid: $21,400. Two subcontractors quit mid-project over slow payment, costing an estimated $38,000 in replacement premiums and delay. The owner personally lent the company $60,000 in March. Average days from cost incurred to cash collected: 78.

The changes: draw schedules restructured with a mobilization draw and milestone triggers; long-lead deposits made owner-funded at order; allowance overages billed on selection; strict no-signature-no-work on change orders; a thirteen-week forecast updated every Monday; and subcontractor terms renegotiated from net 15 to net 30 in exchange for guaranteed payment dates.

Year two: revenue $3,640,000, net margin 9.1% — $331,240. Peak line of credit usage: $90,000. Interest paid: $7,900. No subcontractor departures. No owner loans. Average days from cost incurred to cash collected: 44.

The cash improvement alone was worth roughly $172,000 in reduced credit need, avoided interest and eliminated delay costs — on a business that had been perfectly profitable the whole time.

Retainage and the last check

Retainage is a structural cash problem that most builders treat as an annoyance. On a company doing $3 million with 10% retainage, roughly $300,000 of earned profit is held at any given time — frequently more than the entire year's net income.

Four things reduce the damage:

Negotiate the percentage and the trigger. Retainage reducing from 10% to 5% at 50% completion is a common and reasonable term that dramatically improves mid-project cash.

Mirror it downstream, always. If the owner holds retainage from you, hold the same percentage from subcontractors on the same terms. A builder who is retained but does not retain is financing the entire chain.

Close out aggressively. Retainage release usually waits on punch list completion, lien waivers, warranties, manuals and as-builts. Assembling those during the job rather than after routinely pulls the final check thirty to sixty days earlier.

Know your lien rights and the deadlines. They vary substantially by state and are unforgiving about timing. The preliminary notices that preserve those rights are usually required early — often within weeks of starting — and a builder who has not filed them has quietly given up the strongest collection tool available.

Credit, before you need it

The rule is unchanged and constantly ignored: arrange financing when you do not need it, because the terms available to a builder with strong statements and no urgency are unrecognizably better than those offered to one in trouble.

Three instruments, used for different things:

A working capital line of credit. The correct tool for the timing gap between costs and draws. Sized at roughly two months of operating outflow. Used and repaid cyclically, never carried as permanent debt.

Equipment financing. For assets with a life beyond the job. Never fund equipment from the line of credit, which converts flexible short-term capacity into long-term obligation.

Owner-funded reserve. Retained earnings left in the business. The cheapest capital available, and the one most builders remove annually because a profitable year feels like a reason to take money out.

One habit that materially improves the terms you are offered: send your lender clean quarterly statements without being asked, including a work-in-progress schedule. Bankers price uncertainty, and a builder who communicates proactively is a lower-risk borrower in a way that shows up directly in rate and limit.

Knowing whether a job is ahead or behind on cash

Most builders can tell you whether a job is profitable at the end. Very few can tell you, in the middle, whether they have billed more than they have earned or earned more than they have billed — and that single distinction is where cash surprises come from.

The tool is a work-in-progress schedule, and it needs four numbers per job: contract value including approved changes, total cost to date, estimated cost to complete, and total billed to date.

From those, two conditions emerge:

Overbilled. You have invoiced more than the work completed justifies. This feels comfortable and is borrowed cash — the work still has to be performed, and the money to perform it has already been spent on something else. A company that is overbilled across several jobs is running on money it has not earned, and the reckoning arrives in the final third of every project at once.

Underbilled. You have performed more work than you have invoiced. This is your own money sitting in someone else's account, usually because a change order was not processed, a draw was submitted late, or costs ran ahead of the milestone schedule.

Reviewing this monthly, job by job, does three things. It catches underbilling while it can still be corrected. It reveals cost overruns eight weeks earlier than the closeout would. And it stops the specific illusion that destroys growing builders: healthy bank balances produced entirely by overbilling on jobs that will consume that cash later.

One practical note: this is also the schedule your lender and bonding company want to see. A builder who produces it monthly without being asked is treated as a materially lower risk, and it shows up in the terms.

Five mistakes that cause builder cash crises

• Accepting a back-loaded draw schedule. Silently converts the builder into the project's lender.
• Doing change order work before it is signed. The most common leak in residential construction, and the easiest to close.
• Being retained without retaining. Finances the whole subcontractor chain out of your own profit.
• Forecasting profit instead of cash. The profit and loss statement will not tell you about week seven.
• Growing without adding working capital. The failure mode that specifically targets successful builders.

The numbers to watch

• Cash conversion cycle, measured on completed jobs rather than estimated.
• Lowest projected week in the thirteen-week forecast, reviewed every Monday.
• Days from draw submission to cash received, by owner and by lender.
• Retainage outstanding, by job and by age.
• Unsigned change order work in progress, which should be zero.
• Working capital as a share of annual revenue, tracked as the business grows.

Cash is the constraint that decides how large a construction business can safely become, and it is the one most builders discover only when it binds. The instruments that fix it are unglamorous — a better draw schedule, a signed change order, a Monday spreadsheet, a line of credit arranged in a calm month. None of them require winning more work or charging more. They simply stop a profitable company from lending its own profit to everyone else on the project.

Frequently asked questions

Why do profitable builders run out of cash?

Because of the timing gap between paying for work and being paid for it, and because that gap scales with volume. You pay labor weekly and material on thirty-day terms, bill monthly, wait ten to twenty days for the owner or lender to process, and then wait months more for retainage. That gap is financed by the builder. A company doing $2 million a year might carry $180,000 of exposure; the same company at $4 million carries $360,000, and the profit from the extra volume arrives long after the cash was needed to produce it. This is why builders fail in good years. The measurement that makes it visible is the cash conversion cycle — days from paying for something to being paid for it — calculated on completed jobs. Most residential builders land between 45 and 95 days, and a builder at 70 days growing 40% needs roughly a fifth of that growth in working capital before the year starts.

How should a construction draw schedule be structured?

On four principles. Front-load legitimately, because mobilization, permits, design, long-lead deposits and site preparation are real costs incurred before anything visible happens — a schedule where the first draw arrives after framing has forced you to finance six weeks. Tie draws to verifiable milestones rather than percentages, since foundation poured and inspected is unambiguous while 35% complete invites disagreement exactly when you need money. Match draws to the cost curve rather than the calendar, because costs are lumpy and mechanical rough-in, cabinets and flooring arrive as large concentrated expenses. And make the last draw small: a final draw of 15% turns punch list negotiation into hostage negotiation, while keeping it under 8% plus retainage removes the adversarial ending. One clause is worth more than most — a defined response window for draw approval, with the schedule extended day for day if exceeded.

What is a thirteen-week cash flow forecast?

A weekly projection of cash in and cash out over the next thirteen weeks, updated every Monday in about thirty minutes. It exists because a profit and loss statement tells you whether the business works but will not tell you whether you can make payroll in five weeks. The structure is opening cash, then for each week: expected receipts by job and draw with realistic dates rather than contract dates; outflows for payroll, subcontractors, material, overhead, loan payments and taxes; and closing cash. Three disciplines make it useful — date receipts by when money actually arrives, include non-job items like quarterly taxes and insurance renewals that are exactly what surprises builders, and look at the lowest week rather than the ending balance, because a forecast ending at $140,000 that dips to $9,000 in week seven is describing a crisis.

How can a builder reduce the cash drain from retainage?

Four ways, and the scale justifies the effort: a company doing $3 million with 10% retainage has roughly $300,000 of earned profit held at any time, frequently more than the entire year's net income. Negotiate the percentage and the trigger, since retainage reducing from 10% to 5% at 50% completion is a common and reasonable term that dramatically improves mid-project cash. Mirror it downstream always — a builder who is retained but does not retain from subcontractors is financing the entire chain out of their own profit. Close out aggressively, assembling punch list completion, lien waivers, warranties, manuals and as-builts during the job rather than after, which routinely pulls the final check thirty to sixty days earlier. And know your lien rights and deadlines, which vary substantially by state and usually require preliminary notices within weeks of starting.

What are the biggest cash leaks in a construction company?

Three specific mechanisms, each with a straightforward contract fix. Long-lead deposits on windows, cabinets, custom millwork and specialty equipment often require 50% at order, months before installation and before any draw covers them — the fix is a contract line requiring the owner to fund long-lead deposits on order, which owners accept readily when framed as securing their own delivery dates. Allowance overages, where an owner selects a $9,000 tile package against a $5,000 allowance and the difference is not billed until the next draw, financing someone else's upgrade for six weeks — the fix is making overages billable immediately on selection. And change order work performed before signature, the most common leak in residential construction, fixed by an absolute rule: no signed change order, no work. Builders who enforce it find owners sign quickly, because they want the work.