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SITEWORK CASH FLOWDEVELOPMENT PROJECTSRETAINAGEMOBILIZATIONFRACTIONAL CFOSITEWORK SUBCONTRACTORCONTROLQORESITEWORK CASH FLOWDEVELOPMENT PROJECTSRETAINAGEMOBILIZATIONFRACTIONAL CFOSITEWORK SUBCONTRACTORCONTROLQORE
THE CONSTRUCTION CFOSCHEDULE A FREE CALL
SITEWORK CONTRACTOR FINANCE

THE LARGE DEVELOPMENT
CASH GAP PROBLEM.

THE SHORT ANSWER

Landing a $1.5M development sitework contract feels like a breakthrough. Three months in, the bank account is dangerously low. The job is tracking fine. Revenue is real. The problem is timing: 4 weeks of mobilization before the first billing event, developer payment at 75 days, 10% retainage held through multi-phase completion, and weekly payroll running regardless of when the check arrives. The cash gap on large development sitework is structural — and it's proportional to the contract value.

BY JOSH LUEBKERUPDATED MAY 2026THE CONSTRUCTION CFO
THE CASH DRIVERS

WHY DEVELOPMENT SITEWORK
DRAINS CASH FASTEST.

01
EXTENSIVE MOBILIZATION BEFORE FIRST BILLING
Clearing, grubbing, and rough grading start the job. Equipment mobilization costs are real. Crew time is real. But the billing event on most development SOVs doesn't trigger until rough grading is complete — which can be 3–5 weeks after mobilization. On a $1.5M contract with $80K of mobilization costs, you're $80K negative before the first dollar bills. Without a separate mobilization line in the SOV, that cost sits unrecovered until the milestone triggers.
02
DEVELOPER PAYMENT CYCLES
Private developers run 60–90 day payment cycles, sometimes longer. This is longer than most commercial GC cycles and dramatically longer than public project pay-when-paid terms. On a $1.5M development job, 90-day cycles mean you're financing 3 months of work at a time. The company is essentially a lender to the developer for the duration of the project — except there's no interest rate and no collateral.
03
MULTI-PHASE RETAINAGE STRUCTURE
Development contracts often span multiple phases with retainage held on Phase 1 through Phase 3 completion. A sitework contractor completing Phase 1 grading in month 4 doesn't release the Phase 1 retainage until the entire project is complete — which may be month 18. That's 14 months of retainage float on work that was completed and accepted. On $1.5M with 10% retainage, that's $150K unavailable for over a year.
04
AGGREGATE AND ROCK PROCUREMENT LEAD
Large development sitework requires aggregate, base material, and sometimes rock that has to be ordered in advance. Quarry deliveries are scheduled weeks ahead. The material arrives, gets placed, and bills at the milestone completion — not at delivery. Stored materials billing converts this from a multi-week gap to a same-week billing event, but only if the SOV line was negotiated before contract execution.

The float calculation: mobilization period ($80K, week 1–4 unrecovered) + first billing to collection (75 days = 11 weeks of average monthly burn = $180K) + retainage held ($150K for 14 months) = $410K of float requirement on a $1.5M development contract. Most sitework contractors have $150K–$250K in working capital and a $300K LOC. The math doesn't work without a capital plan built before signing.

THE FIX

HOW TO TAKE DEVELOPMENT WORK
WITHOUT A CASH CRISIS.

1

MODEL THE FLOAT REQUIREMENT BEFORE SIGNING

Before executing a development contract, the CFO builds a job-level cash forecast: mobilization costs and timing, first billing event date, collection cycle, weekly payroll burn, retainage structure by phase, and any major material procurement gaps. If total float requirement exceeds available capital plus LOC capacity, the contract terms need to be renegotiated or the job declined. This analysis takes 2 hours and prevents a 6-month cash crisis.

2

NEGOTIATE THREE SPECIFIC CONTRACT TERMS

Mobilization line: separate SOV line for mobilization costs, billable at project start. Phase retainage release: 10% held per phase, released at phase acceptance, not project completion. Stored materials: provision for billing aggregate and rock at delivery with proper documentation. These three terms, negotiated before contract execution, change the cash profile of a development job from structurally difficult to manageable. After contract execution, the leverage for these conversations is largely gone.

3

SIZE THE LOC TO THE PEAK FLOAT REQUIREMENT

The peak float requirement on a development job usually occurs in months 2–4: mobilization unrecovered, first billing submitted but not yet collected, payroll running weekly. Model the peak and confirm LOC capacity covers it with a 20% buffer. If not, the LOC conversation with the bank happens before contract execution — with 90 days of clean WIP-backed financials, a verified overhead rate, and the job-level cash forecast as supporting documents.

FAQ

COMMON QUESTIONS.

Large development projects combine three cash gap factors: developer payment cycles that run 60–90 days or longer, extensive mobilization periods before the first billing event (grading and clearing can run 3–4 weeks before any progress billing triggers), and retainage held across multi-phase contracts where the retainage on Phase 1 doesn't release until Phase 3 is complete. The total float requirement on a $1.5M development job can exceed $300K before the first check arrives.

Four strategies: negotiate a project mobilization SOV line billable at contract start; negotiate phase-by-phase retainage release tied to phase completion rather than project completion; use stored materials billing for rock, pipe, and aggregate delivered before installation; and build a job-specific cash forecast that maps the mobilization period, billing cycle, and retainage structure before signing the contract.

Phase-by-phase retainage release: 10% retainage held during each phase, released at phase acceptance, rather than held through final project completion. On a 4-phase development contract over 24 months, this converts $150K of inaccessible retainage into four $37,500 retainage collections tied to specific milestones. The negotiation happens before contract execution.

Model the full float requirement before taking on each development project: mobilization costs before first billing, labor float from weekly payroll to monthly billing, retainage held through the contract term, and any material procurement gap. Sum those and compare to available working capital and LOC capacity. If the float requirement exceeds available capital by more than 20%, the job will create a cash crisis regardless of its profitability.

Josh Luebker
Josh Luebker
Fractional CFO · The Construction CFO

Former commercial construction PM and master electrician. Managed 150+ projects totaling $300M+. Large development sitework is the work type most likely to look profitable and drain cash simultaneously. About Josh →

SYSTEM RESOURCES
TRADE OS
CFOS Sitework OS
Mobilization management, phase billing, and development project cash forecasting
CFOS MODULE
Working Capital System
Float requirement modeling, LOC sizing, and project-level capital planning
CFOS MODULE
Cash Flow Cycle System
SOV structure, stored materials, and billing compression for sitework

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WITHOUT THE SYSTEM.

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